Update to high speed encoder stream

2026-06-05 00:13:50 +02:00
parent 7e44092d3f
commit fe1bb0b4bb
15 changed files with 2381 additions and 37 deletions
--- a/Arduino/platformio.ini
+++ b/Arduino/platformio.ini
@@ -12,3 +12,4 @@
 platform = atmelavr
 board = megaatmega2560
 framework = arduino
+monitor_speed = 921600
--- a/Arduino/src/main.cpp
+++ b/Arduino/src/main.cpp
@@ -1,54 +1,228 @@
-// Copyright (C) 2026 Pierre Barbier <pierrebarbier741@gmail.com>
-// Copyright (C) 2026 Association Exergie <association.exergie@gmail.com>
-// SPDX-License-Identifier: GPL-3.0-or-later
-
 #include <Arduino.h>

-#define PIN_REG 2
-#define PIN_SYNC 3
-#define REG_SIZE 256
-#define SYNC_SIZE 256
+#ifndef ARDUINO_ISR_ATTR
+#define ARDUINO_ISR_ATTR
+#endif

-uint32_t REG_BUFF[REG_SIZE];
-uint32_t SYNC_BUFF[SYNC_SIZE];
+constexpr uint8_t TURN_PIN = 27;
+constexpr uint8_t PULSE_PIN = 26;
+constexpr uint8_t GP_PINS[] = {32, 33};

-volatile uint8_t REG_IR = 0;
-volatile uint8_t REG_IW = 0;
-volatile uint8_t SYNC_IR = 0;
-volatile uint8_t SYNC_IW = 0;
+constexpr uint32_t BAUD_RATE = 921600;
+constexpr size_t EVENT_BUFFER_SIZE = 256;
+constexpr size_t GP_INPUT_COUNT = sizeof(GP_PINS) / sizeof(GP_PINS[0]);
+constexpr size_t PACKET_PULSE_COUNT = 16;
+constexpr size_t INPUT_PULSES_PER_TURN = 1024;
+constexpr size_t PULSE_DECIMATION = 4;
+constexpr size_t OUTPUT_PULSES_PER_TURN = INPUT_PULSES_PER_TURN / PULSE_DECIMATION;
+constexpr uint32_t UINT16_DELTA_MAX = UINT16_MAX;

-void append_buff_reg();
-void append_buff_sync();
+static_assert(INPUT_PULSES_PER_TURN % PULSE_DECIMATION == 0);

-void setup() {
-  Serial.begin(115200);
+constexpr uint8_t TURN_MAGIC[] = {0xE7, 0x54, 0xC3, 0xA1};
+constexpr uint8_t PULSE16_MAGIC[] = {0xE7, 0x50, 0xC3, 0xA1};
+constexpr uint8_t PULSE32_MAGIC[] = {0xE7, 0x70, 0xC3, 0xA1};
+constexpr uint8_t GP_MAGIC[] = {0xE7, 0x47, 0xC3, 0xA1};

-  attachInterrupt(digitalPinToInterrupt(PIN_REG), append_buff_reg, FALLING);
-  attachInterrupt(digitalPinToInterrupt(PIN_SYNC), append_buff_sync, FALLING);
+volatile uint32_t PULSE_REG[EVENT_BUFFER_SIZE];
+volatile uint8_t PULSE_W_HEAD = 0;
+uint8_t PULSE_R_HEAD = 0;
+
+volatile uint32_t TURN_REG[EVENT_BUFFER_SIZE];
+volatile uint8_t TURN_W_HEAD = 0;
+uint8_t TURN_R_HEAD = 0;
+
+volatile uint32_t GP_REG[GP_INPUT_COUNT][EVENT_BUFFER_SIZE];
+volatile uint8_t GP_W_HEAD[GP_INPUT_COUNT] = {};
+uint8_t GP_R_HEAD[GP_INPUT_COUNT] = {};
+
+uint32_t packet_deltas[PACKET_PULSE_COUNT];
+size_t packet_count = 0;
+size_t raw_turn_pulse_count = 0;
+size_t output_turn_pulse_count = 0;
+uint32_t previous_timestamp = 0;
+bool have_active_turn = false;
+
+void ARDUINO_ISR_ATTR handle_pulse_isr() {
+  PULSE_REG[PULSE_W_HEAD] = micros();
+  PULSE_W_HEAD = PULSE_W_HEAD + 1;
 }

-void loop() {
-  if (Serial.availableForWrite() >= 5) {
-    if (REG_IW != REG_IR) {
-      Serial.write('R');
-      Serial.write((uint8_t *)&REG_BUFF[REG_IR], sizeof(uint32_t));
-      REG_IR++;
+void ARDUINO_ISR_ATTR handle_turn_isr() {
+  TURN_REG[TURN_W_HEAD] = micros();
+  TURN_W_HEAD = TURN_W_HEAD + 1;
+}
+
+void ARDUINO_ISR_ATTR handle_gp_falling(size_t input) {
+  GP_REG[input][GP_W_HEAD[input]] = micros();
+  GP_W_HEAD[input] = GP_W_HEAD[input] + 1;
+}
+
+void ARDUINO_ISR_ATTR handle_gp0_isr() {
+  handle_gp_falling(0);
+}
+
+void ARDUINO_ISR_ATTR handle_gp1_isr() {
+  handle_gp_falling(1);
+}
+
+bool timestamp_is_before(uint32_t lhs, uint32_t rhs) {
+  return static_cast<int32_t>(lhs - rhs) < 0;
+}
+
+void write_magic(const uint8_t magic[4]) {
+  Serial.write(magic, 4);
+}
+
+void write_u16(uint16_t value) {
+  Serial.write(reinterpret_cast<const uint8_t *>(&value), sizeof(value));
+}
+
+void write_u32(uint32_t value) {
+  Serial.write(reinterpret_cast<const uint8_t *>(&value), sizeof(value));
+}
+
+void send_packet(size_t used_count) {
+  bool needs_u32 = false;
+
+  for (size_t index = 0; index < PACKET_PULSE_COUNT; index++) {
+    if (index >= used_count) {
+      packet_deltas[index] = 0;
    }

-    if (SYNC_IW != SYNC_IR) {
-      Serial.write('S');
-      Serial.write((uint8_t *)&SYNC_BUFF[SYNC_IR], sizeof(uint32_t));
-      SYNC_IR++;
+    if (packet_deltas[index] > UINT16_DELTA_MAX) {
+      needs_u32 = true;
+    }
+  }
+
+  write_magic(needs_u32 ? PULSE32_MAGIC : PULSE16_MAGIC);
+
+  if (needs_u32) {
+    for (size_t index = 0; index < PACKET_PULSE_COUNT; index++) {
+      write_u32(packet_deltas[index]);
+    }
+  } else {
+    for (size_t index = 0; index < PACKET_PULSE_COUNT; index++) {
+      write_u16(static_cast<uint16_t>(packet_deltas[index]));
    }
  }
 }

-void append_buff_reg() {
-  REG_BUFF[REG_IW] = micros();
-  REG_IW++;
+void flush_partial_packet() {
+  if (packet_count == 0) {
+    return;
+  }
+
+  send_packet(packet_count);
+  packet_count = 0;
 }

-void append_buff_sync() {
-  SYNC_BUFF[SYNC_IW] = micros();
-  SYNC_IW++;
+void start_turn(uint32_t timestamp) {
+  if (have_active_turn) {
+    flush_partial_packet();
+  }
+
+  write_magic(TURN_MAGIC);
+  write_u32(timestamp);
+
+  have_active_turn = true;
+  previous_timestamp = timestamp;
+  packet_count = 0;
+  raw_turn_pulse_count = 0;
+  output_turn_pulse_count = 0;
+}
+
+void handle_pulse(uint32_t timestamp) {
+  if (!have_active_turn || raw_turn_pulse_count >= INPUT_PULSES_PER_TURN) {
+    return;
+  }
+
+  const bool should_emit = raw_turn_pulse_count % PULSE_DECIMATION == 0;
+  raw_turn_pulse_count++;
+
+  if (!should_emit || output_turn_pulse_count >= OUTPUT_PULSES_PER_TURN) {
+    return;
+  }
+
+  packet_deltas[packet_count] = timestamp - previous_timestamp;
+  previous_timestamp = timestamp;
+  packet_count++;
+  output_turn_pulse_count++;
+
+  if (packet_count == PACKET_PULSE_COUNT) {
+    send_packet(PACKET_PULSE_COUNT);
+    packet_count = 0;
+  }
+}
+
+void handle_gp(size_t channel, uint32_t timestamp) {
+  if (!have_active_turn) {
+    return;
+  }
+
+  write_magic(GP_MAGIC);
+  Serial.write(static_cast<uint8_t>(channel));
+  write_u32(timestamp);
+}
+
+void process_next_event() {
+  enum EventType { NONE, TURN, PULSE, GP };
+
+  EventType next_type = NONE;
+  uint32_t next_timestamp = 0;
+  size_t next_gp_channel = 0;
+
+  if (TURN_R_HEAD != TURN_W_HEAD) {
+    next_type = TURN;
+    next_timestamp = TURN_REG[TURN_R_HEAD];
+  }
+
+  if (PULSE_R_HEAD != PULSE_W_HEAD &&
+      (next_type == NONE ||
+       timestamp_is_before(PULSE_REG[PULSE_R_HEAD], next_timestamp))) {
+    next_type = PULSE;
+    next_timestamp = PULSE_REG[PULSE_R_HEAD];
+  }
+
+  for (size_t channel = 0; channel < GP_INPUT_COUNT; channel++) {
+    if (GP_R_HEAD[channel] == GP_W_HEAD[channel]) {
+      continue;
+    }
+
+    const uint32_t timestamp = GP_REG[channel][GP_R_HEAD[channel]];
+    if (next_type == NONE || timestamp_is_before(timestamp, next_timestamp)) {
+      next_type = GP;
+      next_timestamp = timestamp;
+      next_gp_channel = channel;
+    }
+  }
+
+  switch (next_type) {
+    case TURN:
+      start_turn(next_timestamp);
+      TURN_R_HEAD++;
+      break;
+    case PULSE:
+      handle_pulse(next_timestamp);
+      PULSE_R_HEAD++;
+      break;
+    case GP:
+      handle_gp(next_gp_channel, next_timestamp);
+      GP_R_HEAD[next_gp_channel]++;
+      break;
+    case NONE:
+      break;
+  }
+}
+
+void setup() {
+  Serial.begin(BAUD_RATE);
+  attachInterrupt(digitalPinToInterrupt(TURN_PIN), handle_turn_isr, RISING);
+  attachInterrupt(digitalPinToInterrupt(PULSE_PIN), handle_pulse_isr, FALLING);
+  attachInterrupt(digitalPinToInterrupt(GP_PINS[0]), handle_gp0_isr, FALLING);
+  attachInterrupt(digitalPinToInterrupt(GP_PINS[1]), handle_gp1_isr, FALLING);
+}
+
+void loop() {
+  process_next_event();
 }
--- a/ESP32/.gitignore
+++ b/ESP32/.gitignore
@@ -0,0 +1,5 @@
+.pio
+.vscode/.browse.c_cpp.db*
+.vscode/c_cpp_properties.json
+.vscode/launch.json
+.vscode/ipch
--- a/ESP32/include/README
+++ b/ESP32/include/README
@@ -0,0 +1,37 @@
+
+This directory is intended for project header files.
+
+A header file is a file containing C declarations and macro definitions
+to be shared between several project source files. You request the use of a
+header file in your project source file (C, C++, etc) located in `src` folder
+by including it, with the C preprocessing directive `#include'.
+
+```src/main.c
+
+#include "header.h"
+
+int main (void)
+{
+ ...
+}
+```
+
+Including a header file produces the same results as copying the header file
+into each source file that needs it. Such copying would be time-consuming
+and error-prone. With a header file, the related declarations appear
+in only one place. If they need to be changed, they can be changed in one
+place, and programs that include the header file will automatically use the
+new version when next recompiled. The header file eliminates the labor of
+finding and changing all the copies as well as the risk that a failure to
+find one copy will result in inconsistencies within a program.
+
+In C, the convention is to give header files names that end with `.h'.
+
+Read more about using header files in official GCC documentation:
+
+* Include Syntax
+* Include Operation
+* Once-Only Headers
+* Computed Includes
+
+https://gcc.gnu.org/onlinedocs/cpp/Header-Files.html
--- a/ESP32/lib/README
+++ b/ESP32/lib/README
@@ -0,0 +1,46 @@
+
+This directory is intended for project specific (private) libraries.
+PlatformIO will compile them to static libraries and link into the executable file.
+
+The source code of each library should be placed in a separate directory
+("lib/your_library_name/[Code]").
+
+For example, see the structure of the following example libraries `Foo` and `Bar`:
+
+|--lib
+|  |
+|  |--Bar
+|  |  |--docs
+|  |  |--examples
+|  |  |--src
+|  |     |- Bar.c
+|  |     |- Bar.h
+|  |  |- library.json (optional. for custom build options, etc) https://docs.platformio.org/page/librarymanager/config.html
+|  |
+|  |--Foo
+|  |  |- Foo.c
+|  |  |- Foo.h
+|  |
+|  |- README --> THIS FILE
+|
+|- platformio.ini
+|--src
+   |- main.c
+
+Example contents of `src/main.c` using Foo and Bar:
+```
+#include <Foo.h>
+#include <Bar.h>
+
+int main (void)
+{
+  ...
+}
+
+```
+
+The PlatformIO Library Dependency Finder will find automatically dependent
+libraries by scanning project source files.
+
+More information about PlatformIO Library Dependency Finder
+- https://docs.platformio.org/page/librarymanager/ldf.html
--- a/ESP32/platformio.ini
+++ b/ESP32/platformio.ini
@@ -0,0 +1,15 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:esp32dev]
+platform = espressif32
+board = esp32dev
+framework = arduino
+monitor_speed = 921600
--- a/ESP32/src/main.cpp
+++ b/ESP32/src/main.cpp
@@ -0,0 +1,224 @@
+#include <Arduino.h>
+
+constexpr uint8_t TURN_PIN = 27;
+constexpr uint8_t PULSE_PIN = 26;
+constexpr uint8_t GP_PINS[] = {32, 33};
+
+constexpr uint32_t BAUD_RATE = 921600;
+constexpr size_t EVENT_BUFFER_SIZE = 256;
+constexpr size_t GP_INPUT_COUNT = sizeof(GP_PINS) / sizeof(GP_PINS[0]);
+constexpr size_t PACKET_PULSE_COUNT = 16;
+constexpr size_t INPUT_PULSES_PER_TURN = 1024;
+constexpr size_t PULSE_DECIMATION = 4;
+constexpr size_t OUTPUT_PULSES_PER_TURN = INPUT_PULSES_PER_TURN / PULSE_DECIMATION;
+constexpr uint32_t UINT16_DELTA_MAX = UINT16_MAX;
+
+static_assert(INPUT_PULSES_PER_TURN % PULSE_DECIMATION == 0);
+
+constexpr uint8_t TURN_MAGIC[] = {0xE7, 0x54, 0xC3, 0xA1};
+constexpr uint8_t PULSE16_MAGIC[] = {0xE7, 0x50, 0xC3, 0xA1};
+constexpr uint8_t PULSE32_MAGIC[] = {0xE7, 0x70, 0xC3, 0xA1};
+constexpr uint8_t GP_MAGIC[] = {0xE7, 0x47, 0xC3, 0xA1};
+
+volatile uint32_t PULSE_REG[EVENT_BUFFER_SIZE];
+volatile uint8_t PULSE_W_HEAD = 0;
+uint8_t PULSE_R_HEAD = 0;
+
+volatile uint32_t TURN_REG[EVENT_BUFFER_SIZE];
+volatile uint8_t TURN_W_HEAD = 0;
+uint8_t TURN_R_HEAD = 0;
+
+volatile uint32_t GP_REG[GP_INPUT_COUNT][EVENT_BUFFER_SIZE];
+volatile uint8_t GP_W_HEAD[GP_INPUT_COUNT] = {};
+uint8_t GP_R_HEAD[GP_INPUT_COUNT] = {};
+
+uint32_t packet_deltas[PACKET_PULSE_COUNT];
+size_t packet_count = 0;
+size_t raw_turn_pulse_count = 0;
+size_t output_turn_pulse_count = 0;
+uint32_t previous_timestamp = 0;
+bool have_active_turn = false;
+
+void ARDUINO_ISR_ATTR handle_pulse_isr() {
+  PULSE_REG[PULSE_W_HEAD] = micros();
+  PULSE_W_HEAD = PULSE_W_HEAD + 1;
+}
+
+void ARDUINO_ISR_ATTR handle_turn_isr() {
+  TURN_REG[TURN_W_HEAD] = micros();
+  TURN_W_HEAD = TURN_W_HEAD + 1;
+}
+
+void ARDUINO_ISR_ATTR handle_gp_falling(size_t input) {
+  GP_REG[input][GP_W_HEAD[input]] = micros();
+  GP_W_HEAD[input] = GP_W_HEAD[input] + 1;
+}
+
+void ARDUINO_ISR_ATTR handle_gp0_isr() {
+  handle_gp_falling(0);
+}
+
+void ARDUINO_ISR_ATTR handle_gp1_isr() {
+  handle_gp_falling(1);
+}
+
+bool timestamp_is_before(uint32_t lhs, uint32_t rhs) {
+  return static_cast<int32_t>(lhs - rhs) < 0;
+}
+
+void write_magic(const uint8_t magic[4]) {
+  Serial.write(magic, 4);
+}
+
+void write_u16(uint16_t value) {
+  Serial.write(reinterpret_cast<const uint8_t *>(&value), sizeof(value));
+}
+
+void write_u32(uint32_t value) {
+  Serial.write(reinterpret_cast<const uint8_t *>(&value), sizeof(value));
+}
+
+void send_packet(size_t used_count) {
+  bool needs_u32 = false;
+
+  for (size_t index = 0; index < PACKET_PULSE_COUNT; index++) {
+    if (index >= used_count) {
+      packet_deltas[index] = 0;
+    }
+
+    if (packet_deltas[index] > UINT16_DELTA_MAX) {
+      needs_u32 = true;
+    }
+  }
+
+  write_magic(needs_u32 ? PULSE32_MAGIC : PULSE16_MAGIC);
+
+  if (needs_u32) {
+    for (size_t index = 0; index < PACKET_PULSE_COUNT; index++) {
+      write_u32(packet_deltas[index]);
+    }
+  } else {
+    for (size_t index = 0; index < PACKET_PULSE_COUNT; index++) {
+      write_u16(static_cast<uint16_t>(packet_deltas[index]));
+    }
+  }
+}
+
+void flush_partial_packet() {
+  if (packet_count == 0) {
+    return;
+  }
+
+  send_packet(packet_count);
+  packet_count = 0;
+}
+
+void start_turn(uint32_t timestamp) {
+  if (have_active_turn) {
+    flush_partial_packet();
+  }
+
+  write_magic(TURN_MAGIC);
+  write_u32(timestamp);
+
+  have_active_turn = true;
+  previous_timestamp = timestamp;
+  packet_count = 0;
+  raw_turn_pulse_count = 0;
+  output_turn_pulse_count = 0;
+}
+
+void handle_pulse(uint32_t timestamp) {
+  if (!have_active_turn || raw_turn_pulse_count >= INPUT_PULSES_PER_TURN) {
+    return;
+  }
+
+  const bool should_emit = raw_turn_pulse_count % PULSE_DECIMATION == 0;
+  raw_turn_pulse_count++;
+
+  if (!should_emit || output_turn_pulse_count >= OUTPUT_PULSES_PER_TURN) {
+    return;
+  }
+
+  packet_deltas[packet_count] = timestamp - previous_timestamp;
+  previous_timestamp = timestamp;
+  packet_count++;
+  output_turn_pulse_count++;
+
+  if (packet_count == PACKET_PULSE_COUNT) {
+    send_packet(PACKET_PULSE_COUNT);
+    packet_count = 0;
+  }
+}
+
+void handle_gp(size_t channel, uint32_t timestamp) {
+  if (!have_active_turn) {
+    return;
+  }
+
+  write_magic(GP_MAGIC);
+  Serial.write(static_cast<uint8_t>(channel));
+  write_u32(timestamp);
+}
+
+void process_next_event() {
+  enum EventType { NONE, TURN, PULSE, GP };
+
+  EventType next_type = NONE;
+  uint32_t next_timestamp = 0;
+  size_t next_gp_channel = 0;
+
+  if (TURN_R_HEAD != TURN_W_HEAD) {
+    next_type = TURN;
+    next_timestamp = TURN_REG[TURN_R_HEAD];
+  }
+
+  if (PULSE_R_HEAD != PULSE_W_HEAD &&
+      (next_type == NONE ||
+       timestamp_is_before(PULSE_REG[PULSE_R_HEAD], next_timestamp))) {
+    next_type = PULSE;
+    next_timestamp = PULSE_REG[PULSE_R_HEAD];
+  }
+
+  for (size_t channel = 0; channel < GP_INPUT_COUNT; channel++) {
+    if (GP_R_HEAD[channel] == GP_W_HEAD[channel]) {
+      continue;
+    }
+
+    const uint32_t timestamp = GP_REG[channel][GP_R_HEAD[channel]];
+    if (next_type == NONE || timestamp_is_before(timestamp, next_timestamp)) {
+      next_type = GP;
+      next_timestamp = timestamp;
+      next_gp_channel = channel;
+    }
+  }
+
+  switch (next_type) {
+    case TURN:
+      start_turn(next_timestamp);
+      TURN_R_HEAD++;
+      break;
+    case PULSE:
+      handle_pulse(next_timestamp);
+      PULSE_R_HEAD++;
+      break;
+    case GP:
+      handle_gp(next_gp_channel, next_timestamp);
+      GP_R_HEAD[next_gp_channel]++;
+      break;
+    case NONE:
+      break;
+  }
+}
+
+void setup() {
+  Serial.begin(BAUD_RATE);
+  attachInterrupt(digitalPinToInterrupt(TURN_PIN), handle_turn_isr, RISING);
+  attachInterrupt(digitalPinToInterrupt(PULSE_PIN), handle_pulse_isr, FALLING);
+  attachInterrupt(digitalPinToInterrupt(GP_PINS[0]), handle_gp0_isr, FALLING);
+  attachInterrupt(digitalPinToInterrupt(GP_PINS[1]), handle_gp1_isr, FALLING);
+}
+
+void loop() {
+  process_next_event();
+}
--- a/ESP32/test/README
+++ b/ESP32/test/README
@@ -0,0 +1,11 @@
+
+This directory is intended for PlatformIO Test Runner and project tests.
+
+Unit Testing is a software testing method by which individual units of
+source code, sets of one or more MCU program modules together with associated
+control data, usage procedures, and operating procedures, are tested to
+determine whether they are fit for use. Unit testing finds problems early
+in the development cycle.
+
+More information about PlatformIO Unit Testing:
+- https://docs.platformio.org/en/latest/advanced/unit-testing/index.html
--- a/Python/clean_recordings.py
+++ b/Python/clean_recordings.py
@@ -0,0 +1,394 @@
+from __future__ import annotations
+
+import argparse
+import csv
+import statistics
+import sys
+from bisect import bisect_left
+from dataclasses import dataclass
+from pathlib import Path
+
+
+INPUT_COLUMNS = {"time_us", "turn", "pulse"}
+GP_COLUMNS = ("gp0_falling", "gp1_falling")
+OUTPUT_COLUMNS = ("time_us", "turn", "pulse", *GP_COLUMNS)
+DEFAULT_PPR = 256
+
+
+@dataclass(frozen=True)
+class Events:
+    turns: list[int]
+    pulses: list[int]
+    gp0_falling: list[int]
+    gp1_falling: list[int]
+
+
+@dataclass(frozen=True)
+class CleanResult:
+    turns: list[int]
+    pulses: list[int]
+    gp0_falling: list[int]
+    gp1_falling: list[int]
+    pulse_noise_removed: int
+    pulses_inserted: int
+    turn_noise_removed: int
+    turn_phase: int | None
+
+
+def positive_intervals(times: list[int]) -> list[int]:
+    return [b - a for a, b in zip(times, times[1:]) if b > a]
+
+
+def median_or_none(values: list[int] | list[float]) -> float | None:
+    if not values:
+        return None
+    return float(statistics.median(values))
+
+
+def robust_median_interval(times: list[int]) -> float | None:
+    intervals = positive_intervals(times)
+    if not intervals:
+        return None
+
+    intervals = sorted(intervals)
+    if len(intervals) >= 20:
+        lo = len(intervals) // 20
+        hi = len(intervals) - lo
+        intervals = intervals[lo:hi]
+
+    return float(statistics.median(intervals))
+
+
+def read_events(path: Path) -> Events:
+    turns: list[int] = []
+    pulses: list[int] = []
+    gp0_falling: list[int] = []
+    gp1_falling: list[int] = []
+
+    with path.open(newline="") as file:
+        reader = csv.DictReader(file)
+        fieldnames = set(reader.fieldnames or ())
+        missing = INPUT_COLUMNS - fieldnames
+        if missing:
+            raise ValueError(f"missing columns: {', '.join(sorted(missing))}")
+
+        for row in reader:
+            time_us = int(row["time_us"])
+            if int(row["turn"]):
+                turns.append(time_us)
+            if int(row["pulse"]):
+                pulses.append(time_us)
+            if "gp0_falling" in fieldnames and int(row["gp0_falling"]):
+                gp0_falling.append(time_us)
+            if "gp1_falling" in fieldnames and int(row["gp1_falling"]):
+                gp1_falling.append(time_us)
+
+    return Events(
+        turns=sorted(turns),
+        pulses=sorted(pulses),
+        gp0_falling=sorted(gp0_falling),
+        gp1_falling=sorted(gp1_falling),
+    )
+
+
+def remove_close_pulses(pulses: list[int]) -> tuple[list[int], int]:
+    if len(pulses) < 3:
+        return sorted(set(pulses)), 0
+
+    median_interval = robust_median_interval(pulses)
+    if median_interval is None:
+        return sorted(set(pulses)), 0
+
+    min_interval = max(2, int(median_interval * 0.35))
+    cleaned: list[int] = []
+    removed = 0
+
+    for pulse in sorted(pulses):
+        if cleaned and pulse <= cleaned[-1]:
+            removed += 1
+            continue
+        if cleaned and pulse - cleaned[-1] < min_interval:
+            removed += 1
+            continue
+        cleaned.append(pulse)
+
+    return cleaned, removed
+
+
+def local_interval(intervals: list[int], index: int, fallback: float) -> float:
+    start = max(0, index - 16)
+    end = min(len(intervals), index + 17)
+    neighbors = intervals[start:index] + intervals[index + 1 : end]
+    plausible = [dt for dt in neighbors if 0.25 * fallback <= dt <= 4.0 * fallback]
+    return median_or_none(plausible) or fallback
+
+
+def interpolate_small_gaps(
+    pulses: list[int],
+    *,
+    max_missing_pulses: int,
+    gap_tolerance: float,
+) -> tuple[list[int], int]:
+    if len(pulses) < 3:
+        return pulses, 0
+
+    fallback = robust_median_interval(pulses)
+    if fallback is None:
+        return pulses, 0
+
+    intervals = positive_intervals(pulses)
+    result = [pulses[0]]
+    inserted = 0
+
+    for index, (start, end) in enumerate(zip(pulses, pulses[1:])):
+        gap = end - start
+        expected = local_interval(intervals, index, fallback)
+        pulse_count = round(gap / expected)
+
+        if 2 <= pulse_count <= max_missing_pulses + 1:
+            corrected_interval = gap / pulse_count
+            error = abs(corrected_interval - expected) / expected
+            if error <= gap_tolerance:
+                for step in range(1, pulse_count):
+                    result.append(round(start + corrected_interval * step))
+                    inserted += 1
+
+        result.append(end)
+
+    return result, inserted
+
+
+def nearest_index(times: list[int], target: int) -> int | None:
+    if not times:
+        return None
+
+    index = bisect_left(times, target)
+    candidates = []
+    if index < len(times):
+        candidates.append(index)
+    if index > 0:
+        candidates.append(index - 1)
+
+    return min(candidates, key=lambda candidate: abs(times[candidate] - target))
+
+
+def remove_close_turns(turns: list[int], min_separation_us: int) -> tuple[list[int], int]:
+    cleaned: list[int] = []
+    removed = 0
+
+    for turn in sorted(turns):
+        if cleaned and turn - cleaned[-1] < min_separation_us:
+            removed += 1
+            continue
+        cleaned.append(turn)
+
+    return cleaned, removed
+
+
+def choose_turn_phase(turns: list[int], pulses: list[int], ppr: int) -> int | None:
+    if not turns or len(pulses) < ppr:
+        return None
+
+    pulse_interval = robust_median_interval(pulses)
+    if pulse_interval is None:
+        return None
+
+    max_distance_us = max(1_000, int(pulse_interval * 10))
+    scores = [0.0] * ppr
+
+    for turn in turns:
+        index = nearest_index(pulses, turn)
+        if index is None:
+            continue
+        distance = abs(pulses[index] - turn)
+        if distance > max_distance_us:
+            continue
+        scores[index % ppr] += 1.0 - distance / max_distance_us
+
+    best_score = max(scores)
+    if best_score <= 0:
+        return None
+
+    return scores.index(best_score)
+
+
+def synthesize_turns(turns: list[int], pulses: list[int], ppr: int) -> tuple[list[int], int, int | None]:
+    if len(pulses) < ppr:
+        return turns, 0, None
+
+    pulse_interval = robust_median_interval(pulses) or 0.0
+    expected_turn_interval = max(1, int(pulse_interval * ppr))
+    debounced_turns, removed = remove_close_turns(
+        turns,
+        max(1, int(expected_turn_interval * 0.45)),
+    )
+    phase = choose_turn_phase(debounced_turns, pulses, ppr)
+    if phase is None:
+        phase = 0
+
+    match_window_us = max(1_000, int(expected_turn_interval * 0.15))
+    synthesized: list[int] = []
+
+    for pulse_index in range(phase, len(pulses), ppr):
+        pulse_time = pulses[pulse_index]
+        turn_index = nearest_index(debounced_turns, pulse_time)
+        if turn_index is not None and abs(debounced_turns[turn_index] - pulse_time) <= match_window_us:
+            synthesized.append(debounced_turns[turn_index])
+        else:
+            synthesized.append(pulse_time)
+
+    return synthesized, removed, phase
+
+
+def clean_events(
+    events: Events,
+    *,
+    ppr: int,
+    max_missing_pulses: int,
+    gap_tolerance: float,
+) -> CleanResult:
+    pulses, pulse_noise_removed = remove_close_pulses(events.pulses)
+    pulses, pulses_inserted = interpolate_small_gaps(
+        pulses,
+        max_missing_pulses=max_missing_pulses,
+        gap_tolerance=gap_tolerance,
+    )
+    turns, turn_noise_removed, turn_phase = synthesize_turns(events.turns, pulses, ppr)
+
+    return CleanResult(
+        turns=turns,
+        pulses=pulses,
+        gp0_falling=events.gp0_falling,
+        gp1_falling=events.gp1_falling,
+        pulse_noise_removed=pulse_noise_removed,
+        pulses_inserted=pulses_inserted,
+        turn_noise_removed=turn_noise_removed,
+        turn_phase=turn_phase,
+    )
+
+
+def write_events(path: Path, result: CleanResult) -> None:
+    rows: dict[int, list[int]] = {}
+    for turn in result.turns:
+        rows.setdefault(turn, [0, 0, 0, 0])[0] = 1
+    for pulse in result.pulses:
+        rows.setdefault(pulse, [0, 0, 0, 0])[1] = 1
+    for gp0 in result.gp0_falling:
+        rows.setdefault(gp0, [0, 0, 0, 0])[2] = 1
+    for gp1 in result.gp1_falling:
+        rows.setdefault(gp1, [0, 0, 0, 0])[3] = 1
+
+    path.parent.mkdir(parents=True, exist_ok=True)
+    with path.open("w", newline="") as file:
+        writer = csv.writer(file)
+        writer.writerow(OUTPUT_COLUMNS)
+        for time_us in sorted(rows):
+            writer.writerow((time_us, *rows[time_us]))
+
+
+def output_path_for(input_path: Path, input_root: Path, output_root: Path) -> Path:
+    relative = input_path.relative_to(input_root)
+    return output_root / relative.with_name(f"{relative.stem}_cleaned.csv")
+
+
+def process_file(
+    input_path: Path,
+    output_path: Path,
+    *,
+    ppr: int,
+    max_missing_pulses: int,
+    gap_tolerance: float,
+) -> CleanResult:
+    events = read_events(input_path)
+    result = clean_events(
+        events,
+        ppr=ppr,
+        max_missing_pulses=max_missing_pulses,
+        gap_tolerance=gap_tolerance,
+    )
+    write_events(output_path, result)
+    return result
+
+
+def parse_args() -> argparse.Namespace:
+    parser = argparse.ArgumentParser(
+        description="Clean rotary turn and pulse event CSVs from recordings/."
+    )
+    parser.add_argument(
+        "--input-root",
+        type=Path,
+        default=Path("recordings"),
+        help="Folder to search recursively for CSV files.",
+    )
+    parser.add_argument(
+        "--output-root",
+        type=Path,
+        default=Path("recordings_cleaned"),
+        help="Folder where cleaned CSV files are written.",
+    )
+    parser.add_argument("--ppr", type=int, default=DEFAULT_PPR, help="Pulse encoder pulses per turn.")
+    parser.add_argument(
+        "--max-missing-pulses",
+        type=int,
+        default=8,
+        help="Largest pulse gap to interpolate. Larger gaps are treated as recording breaks.",
+    )
+    parser.add_argument(
+        "--gap-tolerance",
+        type=float,
+        default=0.45,
+        help="Allowed fractional error when deciding whether a gap is missing pulses.",
+    )
+    return parser.parse_args()
+
+
+def main() -> int:
+    args = parse_args()
+    input_root = args.input_root
+    output_root = args.output_root
+
+    if not input_root.exists():
+        print(f"Input folder does not exist: {input_root}", file=sys.stderr)
+        return 1
+
+    csv_paths = sorted(
+        path
+        for path in input_root.rglob("*.csv")
+        if not path.name.endswith("_cleaned.csv")
+    )
+    if not csv_paths:
+        print(f"No CSV files found under {input_root}", file=sys.stderr)
+        return 1
+
+    failures = 0
+    for input_path in csv_paths:
+        output_path = output_path_for(input_path, input_root, output_root)
+        try:
+            result = process_file(
+                input_path,
+                output_path,
+                ppr=args.ppr,
+                max_missing_pulses=args.max_missing_pulses,
+                gap_tolerance=args.gap_tolerance,
+            )
+        except (OSError, ValueError) as exc:
+            failures += 1
+            print(f"Skipping {input_path}: {exc}", file=sys.stderr)
+            continue
+
+        phase = "unknown" if result.turn_phase is None else str(result.turn_phase)
+        print(
+            f"{input_path} -> {output_path} "
+            f"pulses={len(result.pulses)} "
+            f"turns={len(result.turns)} "
+            f"removed_pulses={result.pulse_noise_removed} "
+            f"inserted_pulses={result.pulses_inserted} "
+            f"removed_turns={result.turn_noise_removed} "
+            f"phase={phase}"
+        )
+
+    return 1 if failures else 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
--- a/Python/parse_binary_stream.py
+++ b/Python/parse_binary_stream.py
@@ -0,0 +1,283 @@
+from __future__ import annotations
+
+import argparse
+import csv
+import struct
+import sys
+import time
+from datetime import datetime
+from pathlib import Path
+from typing import BinaryIO
+
+
+BAUD_RATE = 921_600
+UINT32_MASK = 0xFFFFFFFF
+
+TURN_MAGIC = b"\xE7\x54\xC3\xA1"
+PULSE16_MAGIC = b"\xE7\x50\xC3\xA1"
+PULSE32_MAGIC = b"\xE7\x70\xC3\xA1"
+GP_MAGIC = b"\xE7\x47\xC3\xA1"
+MAGICS = {
+    TURN_MAGIC: "turn",
+    PULSE16_MAGIC: "pulse16",
+    PULSE32_MAGIC: "pulse32",
+    GP_MAGIC: "gp",
+}
+
+GP_COLUMNS = ("gp0_falling", "gp1_falling")
+CSV_COLUMNS = ("time_us", "turn", "pulse", *GP_COLUMNS)
+
+
+class EventTable:
+    def __init__(self) -> None:
+        self.offset: int | None = None
+        self.rows: dict[int, list[int]] = {}
+
+    def add(self, timestamp: int, column: str) -> None:
+        if self.offset is None:
+            self.offset = timestamp
+
+        time_us = (timestamp - self.offset) & UINT32_MASK
+        row = self.rows.setdefault(time_us, [0] * (len(CSV_COLUMNS) - 1))
+        row[CSV_COLUMNS.index(column) - 1] = 1
+
+    def write_csv(self, path: Path) -> None:
+        path.parent.mkdir(parents=True, exist_ok=True)
+        with path.open("w", newline="") as file:
+            writer = csv.writer(file)
+            writer.writerow(CSV_COLUMNS)
+            for time_us in sorted(self.rows):
+                writer.writerow((time_us, *self.rows[time_us]))
+
+
+def choose_port() -> str | None:
+    from serial.tools import list_ports
+
+    ports = list(list_ports.comports())
+    if not ports:
+        print("No serial ports found.")
+        return None
+
+    print("Available serial ports:")
+    for index, port in enumerate(ports, start=1):
+        description = port.description or "serial port"
+        print(f"  {index}. {port.device} - {description}")
+
+    while True:
+        choice = input("Choose a port number, or q to quit: ").strip().lower()
+        if choice == "q":
+            return None
+
+        try:
+            index = int(choice)
+        except ValueError:
+            print("Please enter a port number.")
+            continue
+
+        if 1 <= index <= len(ports):
+            return ports[index - 1].device
+
+        print(f"Please choose a number between 1 and {len(ports)}.")
+
+
+def deadline_expired(deadline: float | None) -> bool:
+    return deadline is not None and time.monotonic() >= deadline
+
+
+def read_exact(
+    stream: BinaryIO,
+    size: int,
+    *,
+    deadline: float | None,
+    eof_on_empty: bool,
+) -> bytes | None:
+    data = bytearray()
+    while len(data) < size:
+        chunk = stream.read(size - len(data))
+        if not chunk:
+            if eof_on_empty or deadline_expired(deadline):
+                return None
+            continue
+        data.extend(chunk)
+    return bytes(data)
+
+
+def read_magic(
+    stream: BinaryIO,
+    *,
+    deadline: float | None,
+    eof_on_empty: bool,
+) -> str | None:
+    window = bytearray()
+
+    while True:
+        byte = stream.read(1)
+        if not byte:
+            if eof_on_empty or deadline_expired(deadline):
+                return None
+            continue
+
+        window.extend(byte)
+        if len(window) > 4:
+            del window[0]
+
+        if len(window) == 4:
+            frame_type = MAGICS.get(bytes(window))
+            if frame_type is not None:
+                return frame_type
+
+
+def parse_stream(
+    stream: BinaryIO,
+    events: EventTable,
+    duration_s: float | None = None,
+    eof_on_empty: bool = True,
+) -> int:
+    previous_pulse_timestamp: int | None = None
+    deadline = None if duration_s is None else time.monotonic() + duration_s
+    frames = 0
+
+    while deadline is None or time.monotonic() < deadline:
+        frame_type = read_magic(
+            stream,
+            deadline=deadline,
+            eof_on_empty=eof_on_empty,
+        )
+        if frame_type is None:
+            break
+
+        if frame_type == "turn":
+            payload = read_exact(
+                stream,
+                4,
+                deadline=deadline,
+                eof_on_empty=eof_on_empty,
+            )
+            if payload is None:
+                break
+            timestamp = struct.unpack("<I", payload)[0]
+            previous_pulse_timestamp = timestamp
+            events.add(timestamp, "turn")
+        elif frame_type == "pulse16":
+            payload = read_exact(
+                stream,
+                16 * 2,
+                deadline=deadline,
+                eof_on_empty=eof_on_empty,
+            )
+            if payload is None:
+                break
+            if previous_pulse_timestamp is not None:
+                for delta in struct.unpack("<16H", payload):
+                    if delta == 0:
+                        continue
+                    previous_pulse_timestamp = (
+                        previous_pulse_timestamp + delta
+                    ) & UINT32_MASK
+                    events.add(previous_pulse_timestamp, "pulse")
+        elif frame_type == "pulse32":
+            payload = read_exact(
+                stream,
+                16 * 4,
+                deadline=deadline,
+                eof_on_empty=eof_on_empty,
+            )
+            if payload is None:
+                break
+            if previous_pulse_timestamp is not None:
+                for delta in struct.unpack("<16I", payload):
+                    if delta == 0:
+                        continue
+                    previous_pulse_timestamp = (
+                        previous_pulse_timestamp + delta
+                    ) & UINT32_MASK
+                    events.add(previous_pulse_timestamp, "pulse")
+        elif frame_type == "gp":
+            payload = read_exact(
+                stream,
+                5,
+                deadline=deadline,
+                eof_on_empty=eof_on_empty,
+            )
+            if payload is None:
+                break
+            channel = payload[0]
+            timestamp = struct.unpack("<I", payload[1:])[0]
+            if channel < len(GP_COLUMNS):
+                events.add(timestamp, GP_COLUMNS[channel])
+
+        frames += 1
+
+    return frames
+
+
+def default_output_path() -> Path:
+    started_at = datetime.now().strftime("%Y%m%d_%H%M%S")
+    return Path("recordings") / f"{started_at}_events.csv"
+
+
+def parse_args() -> argparse.Namespace:
+    parser = argparse.ArgumentParser(
+        description="Parse the ESP32 encoder binary stream into an event CSV."
+    )
+    source = parser.add_mutually_exclusive_group()
+    source.add_argument("--port", help="Serial port to read from.")
+    source.add_argument("--input", type=Path, help="Captured binary stream to parse.")
+    parser.add_argument(
+        "-o",
+        "--output",
+        type=Path,
+        default=default_output_path(),
+        help="Output CSV path.",
+    )
+    parser.add_argument("--baud", type=int, default=BAUD_RATE)
+    parser.add_argument(
+        "--duration",
+        type=float,
+        help="Recording duration in seconds. Without this, serial reads until Ctrl-C.",
+    )
+    return parser.parse_args()
+
+
+def main() -> int:
+    args = parse_args()
+    events = EventTable()
+
+    try:
+        if args.input is not None:
+            with args.input.open("rb") as stream:
+                frames = parse_stream(stream, events)
+        else:
+            import serial
+
+            port = args.port or choose_port()
+            if port is None:
+                return 0
+
+            try:
+                with serial.Serial(port, args.baud, timeout=0.1) as stream:
+                    stream.reset_input_buffer()
+                    print(f"Reading {port} at {args.baud} baud. Press Ctrl-C to stop.")
+                    frames = parse_stream(
+                        stream,
+                        events,
+                        args.duration,
+                        eof_on_empty=False,
+                    )
+            except serial.SerialException as exc:
+                print(f"Serial error: {exc}", file=sys.stderr)
+                return 1
+    except KeyboardInterrupt:
+        print()
+        frames = len(events.rows)
+    except ImportError as exc:
+        print(f"Missing Python dependency: {exc}", file=sys.stderr)
+        return 1
+
+    events.write_csv(args.output)
+    print(f"Wrote {len(events.rows)} event times from {frames} frames to {args.output}")
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
--- a/Python/plot_events.py
+++ b/Python/plot_events.py
@@ -0,0 +1,118 @@
+from __future__ import annotations
+
+import argparse
+import csv
+import sys
+from pathlib import Path
+
+import matplotlib.pyplot as plt
+
+
+DEFAULT_CHANNELS = (
+    "turn",
+    "pulse",
+    "gp0_falling",
+    "gp1_falling",
+)
+
+
+def read_events(path: Path) -> tuple[list[str], list[list[float]]]:
+    with path.open(newline="") as file:
+        reader = csv.DictReader(file)
+        fieldnames = set(reader.fieldnames or ())
+        if "time_us" not in fieldnames:
+            raise ValueError("CSV is missing column: time_us")
+
+        channels = [channel for channel in DEFAULT_CHANNELS if channel in fieldnames]
+        if not channels:
+            raise ValueError("CSV has no plottable event columns")
+
+        events = [[] for _ in channels]
+
+        for row in reader:
+            time_s = int(row["time_us"]) / 1_000_000
+            for index, channel in enumerate(channels):
+                if int(row[channel]):
+                    events[index].append(time_s)
+
+    return channels, events
+
+
+def iter_csv_paths(path: Path) -> list[Path]:
+    if path.is_dir():
+        return sorted(path.rglob("*.csv"))
+    return [path]
+
+
+def parse_args() -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description="Plot ESP32 event CSV files.")
+    parser.add_argument("csv_path", type=Path, help="CSV file or directory of CSV files.")
+    parser.add_argument("-o", "--output", type=Path, help="Optional image output path.")
+    return parser.parse_args()
+
+
+def plot_events(csv_path: Path, output: Path | None) -> bool:
+    try:
+        channels, events = read_events(csv_path)
+    except (OSError, ValueError) as exc:
+        print(f"Could not read {csv_path}: {exc}", file=sys.stderr)
+        return False
+
+    fig, ax = plt.subplots(figsize=(12, 5))
+    ax.eventplot(events, orientation="horizontal", lineoffsets=range(len(channels)))
+    ax.set_yticks(range(len(channels)), channels)
+    ax.set_xlabel("time (s)")
+    ax.set_title(str(csv_path))
+    ax.grid(axis="x", alpha=0.25)
+    fig.tight_layout()
+
+    if output is not None:
+        output.parent.mkdir(parents=True, exist_ok=True)
+        fig.savefig(output, dpi=160)
+        print(f"Wrote {output}")
+        plt.close(fig)
+    else:
+        plt.show()
+        plt.close(fig)
+
+    return True
+
+
+def output_path_for(csv_path: Path, output: Path | None, multiple: bool) -> Path | None:
+    if output is None:
+        return None
+    if not multiple:
+        return output
+    return output / f"{csv_path.stem}.png"
+
+
+def main() -> int:
+    args = parse_args()
+
+    if not args.csv_path.exists():
+        print(f"Path does not exist: {args.csv_path}", file=sys.stderr)
+        return 1
+
+    csv_paths = iter_csv_paths(args.csv_path)
+    if not csv_paths:
+        print(f"No CSV files found under {args.csv_path}", file=sys.stderr)
+        return 1
+
+    multiple = len(csv_paths) > 1
+    if multiple and args.output is not None and args.output.suffix:
+        print("When plotting a directory, --output must be a directory.", file=sys.stderr)
+        return 1
+
+    failures = 0
+    for csv_path in csv_paths:
+        output = output_path_for(csv_path, args.output, multiple)
+        if multiple and output is None:
+            print(f"Plotting {csv_path}")
+        if not plot_events(csv_path, output):
+            failures += 1
+
+    return 1 if failures else 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
--- a/Python/plot_rpm.py
+++ b/Python/plot_rpm.py
@@ -0,0 +1,323 @@
+from __future__ import annotations
+
+import argparse
+import csv
+import sys
+from dataclasses import dataclass
+from pathlib import Path
+
+import matplotlib.pyplot as plt
+from matplotlib.ticker import MultipleLocator
+
+
+REQUIRED_COLUMNS = {"time_us", "rpm_raw", "rpm_lpf"}
+ANGLE_COLUMNS = {"revolution_index", "crank_angle_deg"}
+
+
+@dataclass(frozen=True)
+class GpEvent:
+    time_s: float
+    revolution_index: int
+    crank_angle_deg: float
+
+
+@dataclass(frozen=True)
+class RpmData:
+    time_s: list[float]
+    revolution_index: list[int]
+    crank_angle_deg: list[float]
+    rpm_raw: list[float]
+    rpm_lpf: list[float]
+    turn_time_s: list[float]
+    gp0_falling: list[GpEvent]
+    gp1_falling: list[GpEvent]
+
+
+def read_rpm(path: Path) -> RpmData:
+    time_s: list[float] = []
+    revolution_index: list[int] = []
+    crank_angle_deg: list[float] = []
+    rpm_raw: list[float] = []
+    rpm_lpf: list[float] = []
+    turn_time_s: list[float] = []
+    gp0_falling: list[GpEvent] = []
+    gp1_falling: list[GpEvent] = []
+
+    with path.open(newline="") as file:
+        reader = csv.DictReader(file)
+        fieldnames = set(reader.fieldnames or ())
+        missing = REQUIRED_COLUMNS - fieldnames
+        if missing:
+            raise ValueError(f"missing columns: {', '.join(sorted(missing))}")
+
+        has_turn = "turn" in fieldnames
+        has_angle = ANGLE_COLUMNS <= fieldnames
+        has_gp0 = "gp0_falling" in fieldnames
+        has_gp1 = "gp1_falling" in fieldnames
+        for row in reader:
+            sample_time_s = int(row["time_us"]) / 1_000_000
+            row_revolution_index = int(row["revolution_index"]) if has_angle and row["revolution_index"] else 0
+            row_crank_angle_deg = float(row["crank_angle_deg"]) if has_angle and row["crank_angle_deg"] else 0.0
+
+            if row["rpm_raw"] and row["rpm_lpf"]:
+                time_s.append(sample_time_s)
+                revolution_index.append(row_revolution_index)
+                crank_angle_deg.append(row_crank_angle_deg)
+                rpm_raw.append(float(row["rpm_raw"]))
+                rpm_lpf.append(float(row["rpm_lpf"]))
+            if has_turn and int(row["turn"]):
+                turn_time_s.append(sample_time_s)
+            if has_gp0 and int(row["gp0_falling"]):
+                gp0_falling.append(
+                    GpEvent(
+                        time_s=sample_time_s,
+                        revolution_index=row_revolution_index,
+                        crank_angle_deg=row_crank_angle_deg,
+                    )
+                )
+            if has_gp1 and int(row["gp1_falling"]):
+                gp1_falling.append(
+                    GpEvent(
+                        time_s=sample_time_s,
+                        revolution_index=row_revolution_index,
+                        crank_angle_deg=row_crank_angle_deg,
+                    )
+                )
+
+    return RpmData(
+        time_s=time_s,
+        revolution_index=revolution_index,
+        crank_angle_deg=crank_angle_deg,
+        rpm_raw=rpm_raw,
+        rpm_lpf=rpm_lpf,
+        turn_time_s=turn_time_s,
+        gp0_falling=gp0_falling,
+        gp1_falling=gp1_falling,
+    )
+
+
+def iter_csv_paths(path: Path) -> list[Path]:
+    if path.is_dir():
+        return sorted(path.rglob("*.csv"))
+    return [path]
+
+
+def plot_time(data: RpmData, ax: plt.Axes) -> None:
+    ax.plot(data.time_s, data.rpm_raw, label="raw", linewidth=0.75, alpha=0.35)
+    ax.plot(data.time_s, data.rpm_lpf, label="lpf", linewidth=1.4)
+
+    for turn_time in data.turn_time_s:
+        ax.axvline(turn_time, color="0.7", linewidth=0.5, alpha=0.35)
+
+    ax.set_xlabel("time (s)")
+
+
+def selected_gp_events(data: RpmData, gp_mode: str) -> list[tuple[str, list[GpEvent], str]]:
+    selected: list[tuple[str, list[GpEvent], str]] = []
+    if gp_mode in {"gp0", "both"}:
+        selected.append(("gp0 falling", data.gp0_falling, "tab:green"))
+    if gp_mode in {"gp1", "both"}:
+        selected.append(("gp1 falling", data.gp1_falling, "tab:red"))
+    return selected
+
+
+def plot_gp_bars(data: RpmData, ax: plt.Axes, *, x_axis: str, gp_mode: str) -> None:
+    for label, events, color in selected_gp_events(data, gp_mode):
+        plotted_label = False
+        for event in events:
+            if x_axis == "time":
+                x_value = event.time_s
+            elif x_axis in {"angle", "angle-overlay"}:
+                if event.revolution_index < 0:
+                    continue
+                x_value = event.crank_angle_deg
+            else:
+                if event.revolution_index < 0:
+                    continue
+                x_value = event.revolution_index * 360.0 + event.crank_angle_deg
+
+            ax.axvline(
+                x_value,
+                color=color,
+                alpha=0.18,
+                linewidth=5.0,
+                label=label if not plotted_label else None,
+            )
+            plotted_label = True
+
+
+def has_angle_data(data: RpmData) -> bool:
+    return any(data.revolution_index) or any(data.crank_angle_deg)
+
+
+def plot_angle_overlay(data: RpmData, ax: plt.Axes) -> None:
+    revolutions = sorted(set(data.revolution_index))
+    raw_label_used = False
+    lpf_label_used = False
+
+    for revolution in revolutions:
+        indices = [
+            index
+            for index, value in enumerate(data.revolution_index)
+            if value == revolution and value >= 0
+        ]
+        if len(indices) < 2:
+            continue
+
+        angles = [data.crank_angle_deg[index] for index in indices]
+        raw = [data.rpm_raw[index] for index in indices]
+        lpf = [data.rpm_lpf[index] for index in indices]
+
+        ax.plot(
+            angles,
+            raw,
+            color="0.55",
+            linewidth=0.5,
+            alpha=0.12,
+            label="raw" if not raw_label_used else None,
+        )
+        ax.plot(
+            angles,
+            lpf,
+            linewidth=0.8,
+            alpha=0.28,
+            label="lpf per rev" if not lpf_label_used else None,
+        )
+        raw_label_used = True
+        lpf_label_used = True
+
+    ax.set_xlim(0, 360)
+    ax.set_xlabel("crank angle (deg)")
+
+
+def plot_angle_continuous(data: RpmData, ax: plt.Axes) -> None:
+    indices = [
+        index
+        for index, revolution in enumerate(data.revolution_index)
+        if revolution >= 0
+    ]
+    if not indices:
+        return
+
+    continuous_angle = [
+        data.revolution_index[index] * 360.0 + data.crank_angle_deg[index]
+        for index in indices
+    ]
+    rpm_raw = [data.rpm_raw[index] for index in indices]
+    rpm_lpf = [data.rpm_lpf[index] for index in indices]
+
+    ax.plot(continuous_angle, rpm_raw, label="raw", linewidth=0.75, alpha=0.35)
+    ax.plot(continuous_angle, rpm_lpf, label="lpf", linewidth=1.4)
+
+    max_angle = max(continuous_angle)
+    turn_angle = 0.0
+    while turn_angle <= max_angle:
+        ax.axvline(turn_angle, color="0.7", linewidth=0.5, alpha=0.35)
+        turn_angle += 360.0
+
+    ax.set_xlim(0, max_angle)
+    ax.xaxis.set_major_locator(MultipleLocator(360.0))
+    ax.xaxis.set_minor_locator(MultipleLocator(180.0))
+    ax.set_xlabel("continuous crank angle (deg)")
+
+
+def plot_rpm(csv_path: Path, output: Path | None, *, x_axis: str, gp_mode: str) -> bool:
+    try:
+        data = read_rpm(csv_path)
+    except (OSError, ValueError) as exc:
+        print(f"Could not read {csv_path}: {exc}", file=sys.stderr)
+        return False
+
+    if not data.time_s:
+        print(f"Skipping empty RPM file: {csv_path}", file=sys.stderr)
+        return True
+    if x_axis.startswith("angle") and not has_angle_data(data):
+        print(f"Could not plot crank angle for {csv_path}: missing angle columns", file=sys.stderr)
+        return False
+
+    fig, ax = plt.subplots(figsize=(12, 5))
+    if x_axis in {"angle", "angle-overlay"}:
+        plot_angle_overlay(data, ax)
+    elif x_axis == "angle-continuous":
+        plot_angle_continuous(data, ax)
+    else:
+        plot_time(data, ax)
+    plot_gp_bars(data, ax, x_axis=x_axis, gp_mode=gp_mode)
+
+    ax.set_ylabel("RPM")
+    ax.set_title(str(csv_path))
+    ax.grid(alpha=0.25)
+    if x_axis == "angle-continuous":
+        ax.grid(which="minor", axis="x", alpha=0.15, linewidth=0.6)
+    ax.legend()
+    fig.tight_layout()
+
+    if output is not None:
+        output.parent.mkdir(parents=True, exist_ok=True)
+        fig.savefig(output, dpi=160)
+        print(f"Wrote {output}")
+        plt.close(fig)
+    else:
+        plt.show()
+        plt.close(fig)
+
+    return True
+
+
+def output_path_for(csv_path: Path, output: Path | None, multiple: bool) -> Path | None:
+    if output is None:
+        return None
+    if not multiple:
+        return output
+    return output / f"{csv_path.stem}.png"
+
+
+def parse_args() -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description="Plot raw and filtered RPM CSV files.")
+    parser.add_argument("csv_path", type=Path, help="RPM CSV file or directory of RPM CSV files.")
+    parser.add_argument("-o", "--output", type=Path, help="Optional image output path or directory.")
+    parser.add_argument(
+        "--x",
+        choices=("time", "angle", "angle-overlay", "angle-continuous"),
+        default="time",
+        help="Plot RPM against time, overlaid 0-360 crank angle, or continuous crank angle.",
+    )
+    parser.add_argument(
+        "--gp",
+        choices=("none", "gp0", "gp1", "both"),
+        default="none",
+        help="Overlay GP falling events as translucent vertical bars.",
+    )
+    return parser.parse_args()
+
+
+def main() -> int:
+    args = parse_args()
+
+    if not args.csv_path.exists():
+        print(f"Path does not exist: {args.csv_path}", file=sys.stderr)
+        return 1
+
+    csv_paths = iter_csv_paths(args.csv_path)
+    if not csv_paths:
+        print(f"No CSV files found under {args.csv_path}", file=sys.stderr)
+        return 1
+
+    multiple = len(csv_paths) > 1
+    if multiple and args.output is not None and args.output.suffix:
+        print("When plotting a directory, --output must be a directory.", file=sys.stderr)
+        return 1
+
+    failures = 0
+    for csv_path in csv_paths:
+        output = output_path_for(csv_path, args.output, multiple)
+        if multiple and output is None:
+            print(f"Plotting {csv_path}")
+        if not plot_rpm(csv_path, output, x_axis=args.x, gp_mode=args.gp):
+            failures += 1
+
+    return 1 if failures else 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
--- a/Python/process_rpm.py
+++ b/Python/process_rpm.py
@@ -0,0 +1,469 @@
+from __future__ import annotations
+
+import argparse
+import csv
+import statistics
+import sys
+from bisect import bisect_right
+from dataclasses import dataclass
+from pathlib import Path
+
+
+INPUT_COLUMNS = {"time_us", "pulse"}
+GP_COLUMNS = ("gp0_falling", "gp1_falling")
+OUTPUT_COLUMNS = (
+    "time_us",
+    "pulse_index",
+    "revolution_index",
+    "crank_angle_deg",
+    "turn",
+    *GP_COLUMNS,
+    "rpm_raw",
+    "rpm_lpf",
+)
+DEFAULT_PPR = 256
+
+
+@dataclass(frozen=True)
+class Events:
+    pulse_times: list[int]
+    turn_times: list[int]
+    gp0_falling: list[int]
+    gp1_falling: list[int]
+
+
+@dataclass(frozen=True)
+class RpmSample:
+    time_us: int
+    pulse_index: int
+    revolution_index: int
+    crank_angle_deg: float
+    turn: int
+    rpm_raw: float
+    rpm_lpf: float
+
+
+@dataclass(frozen=True)
+class OutputRow:
+    time_us: int
+    pulse_index: int | None
+    revolution_index: int | None
+    crank_angle_deg: float | None
+    turn: int
+    gp0_falling: int
+    gp1_falling: int
+    rpm_raw: float | None
+    rpm_lpf: float | None
+
+
+def read_events(path: Path) -> Events:
+    pulse_times: list[int] = []
+    turn_times: list[int] = []
+    gp0_falling: list[int] = []
+    gp1_falling: list[int] = []
+
+    with path.open(newline="") as file:
+        reader = csv.DictReader(file)
+        fieldnames = set(reader.fieldnames or ())
+        missing = INPUT_COLUMNS - fieldnames
+        if missing:
+            raise ValueError(f"missing columns: {', '.join(sorted(missing))}")
+
+        has_turn = "turn" in fieldnames
+        for row in reader:
+            time_us = int(row["time_us"])
+            if int(row["pulse"]):
+                pulse_times.append(time_us)
+            if has_turn and int(row["turn"]):
+                turn_times.append(time_us)
+            if "gp0_falling" in fieldnames and int(row["gp0_falling"]):
+                gp0_falling.append(time_us)
+            if "gp1_falling" in fieldnames and int(row["gp1_falling"]):
+                gp1_falling.append(time_us)
+
+    return Events(
+        pulse_times=sorted(pulse_times),
+        turn_times=sorted(turn_times),
+        gp0_falling=sorted(gp0_falling),
+        gp1_falling=sorted(gp1_falling),
+    )
+
+
+def median_or_none(values: list[float]) -> float | None:
+    if not values:
+        return None
+    return float(statistics.median(values))
+
+
+def despike(values: list[float], *, window: int, sigma: float) -> tuple[list[float], int]:
+    if len(values) < 3:
+        return values[:], 0
+
+    radius = max(1, window // 2)
+    cleaned = values[:]
+    replaced = 0
+
+    for index, value in enumerate(values):
+        start = max(0, index - radius)
+        end = min(len(values), index + radius + 1)
+        local = values[start:end]
+        median = median_or_none(local)
+        if median is None:
+            continue
+
+        deviations = [abs(sample - median) for sample in local]
+        mad = median_or_none(deviations) or 0.0
+        threshold = sigma * 1.4826 * mad
+
+        if threshold <= 0.0:
+            threshold = max(1.0, abs(median) * 0.25)
+
+        if abs(value - median) > threshold:
+            cleaned[index] = median
+            replaced += 1
+
+    return cleaned, replaced
+
+
+def ema(values: list[float], alpha: float) -> list[float]:
+    if not values:
+        return []
+
+    filtered = [values[0]]
+    previous = values[0]
+    for value in values[1:]:
+        previous = alpha * value + (1.0 - alpha) * previous
+        filtered.append(previous)
+
+    return filtered
+
+
+def nearest_index(times: list[int], target: int) -> int | None:
+    if not times:
+        return None
+
+    lo = 0
+    hi = len(times)
+    while lo < hi:
+        mid = (lo + hi) // 2
+        if times[mid] < target:
+            lo = mid + 1
+        else:
+            hi = mid
+
+    candidates = []
+    if lo < len(times):
+        candidates.append(lo)
+    if lo > 0:
+        candidates.append(lo - 1)
+
+    return min(candidates, key=lambda index: abs(times[index] - target))
+
+
+def robust_median_interval(times: list[int]) -> float | None:
+    intervals = [b - a for a, b in zip(times, times[1:]) if b > a]
+    if not intervals:
+        return None
+
+    intervals = sorted(intervals)
+    if len(intervals) >= 20:
+        trim = len(intervals) // 20
+        intervals = intervals[trim : len(intervals) - trim]
+
+    return float(statistics.median(intervals))
+
+
+def choose_turn_phase(pulse_times: list[int], turn_times: list[int], ppr: int) -> int:
+    if not pulse_times or not turn_times:
+        return 0
+
+    pulse_interval = robust_median_interval(pulse_times)
+    if pulse_interval is None:
+        return 0
+
+    max_distance_us = max(1_000, int(pulse_interval * 10))
+    scores = [0.0] * ppr
+
+    for turn_time in turn_times:
+        pulse_index = nearest_index(pulse_times, turn_time)
+        if pulse_index is None:
+            continue
+        distance = abs(pulse_times[pulse_index] - turn_time)
+        if distance <= max_distance_us:
+            scores[pulse_index % ppr] += 1.0 - distance / max_distance_us
+
+    best_score = max(scores)
+    if best_score <= 0.0:
+        return 0
+
+    return scores.index(best_score)
+
+
+def revolution_index_for(pulse_index: int, phase: int, ppr: int) -> int:
+    return (pulse_index - phase) // ppr
+
+
+def calculate_rpm(
+    events: Events,
+    *,
+    ppr: int,
+    filter_window: int,
+    filter_alpha: float,
+    hampel_sigma: float,
+) -> tuple[list[RpmSample], int]:
+    raw_rows: list[tuple[int, int, int, float, int, float]] = []
+    pulse_times = events.pulse_times
+    phase = choose_turn_phase(pulse_times, events.turn_times, ppr)
+    degrees_per_pulse = 360.0 / ppr
+
+    for pulse_index, (previous_time, current_time) in enumerate(zip(pulse_times, pulse_times[1:]), start=1):
+        delta_us = current_time - previous_time
+        if delta_us <= 0:
+            continue
+
+        rpm = 60_000_000.0 / (delta_us * ppr)
+        angle_pulse = (pulse_index - phase) % ppr
+        angle_deg = angle_pulse * degrees_per_pulse
+        revolution_index = revolution_index_for(pulse_index, phase, ppr)
+        turn = 1 if angle_pulse == 0 else 0
+        raw_rows.append((current_time, pulse_index, revolution_index, angle_deg, turn, rpm))
+
+    raw_rpm = [row[5] for row in raw_rows]
+    despiked_rpm, replaced = despike(raw_rpm, window=filter_window, sigma=hampel_sigma)
+    filtered_rpm = ema(despiked_rpm, filter_alpha)
+
+    samples = [
+        RpmSample(
+            time_us=time_us,
+            pulse_index=pulse_index,
+            revolution_index=revolution_index,
+            crank_angle_deg=angle_deg,
+            turn=turn,
+            rpm_raw=rpm_raw,
+            rpm_lpf=rpm_lpf,
+        )
+        for (time_us, pulse_index, revolution_index, angle_deg, turn, rpm_raw), rpm_lpf in zip(
+            raw_rows,
+            filtered_rpm,
+        )
+    ]
+
+    return samples, replaced
+
+
+def pulse_position_for_time(
+    pulse_times: list[int],
+    time_us: int,
+    *,
+    phase: int,
+    ppr: int,
+) -> tuple[int, int, float]:
+    pulse_index = bisect_right(pulse_times, time_us) - 1
+    if pulse_index < 0:
+        pulse_index = 0
+
+    angle_pulse = (pulse_index - phase) % ppr
+    revolution_index = revolution_index_for(pulse_index, phase, ppr)
+    angle_deg = angle_pulse * (360.0 / ppr)
+
+    return pulse_index, revolution_index, angle_deg
+
+
+def build_output_rows(
+    events: Events,
+    samples: list[RpmSample],
+    *,
+    ppr: int,
+) -> list[OutputRow]:
+    phase = choose_turn_phase(events.pulse_times, events.turn_times, ppr)
+    rows: dict[tuple[int, int], OutputRow] = {}
+
+    for sample in samples:
+        rows[(sample.time_us, 0)] = OutputRow(
+            time_us=sample.time_us,
+            pulse_index=sample.pulse_index,
+            revolution_index=sample.revolution_index,
+            crank_angle_deg=sample.crank_angle_deg,
+            turn=sample.turn,
+            gp0_falling=0,
+            gp1_falling=0,
+            rpm_raw=sample.rpm_raw,
+            rpm_lpf=sample.rpm_lpf,
+        )
+
+    for channel_index, gp_times in enumerate((events.gp0_falling, events.gp1_falling), start=1):
+        for gp_time in gp_times:
+            pulse_index, revolution_index, angle_deg = pulse_position_for_time(
+                events.pulse_times,
+                gp_time,
+                phase=phase,
+                ppr=ppr,
+            )
+            existing_key = (gp_time, 0)
+            if existing_key in rows:
+                existing = rows[existing_key]
+                rows[existing_key] = OutputRow(
+                    time_us=existing.time_us,
+                    pulse_index=existing.pulse_index,
+                    revolution_index=existing.revolution_index,
+                    crank_angle_deg=existing.crank_angle_deg,
+                    turn=existing.turn,
+                    gp0_falling=1 if channel_index == 1 else existing.gp0_falling,
+                    gp1_falling=1 if channel_index == 2 else existing.gp1_falling,
+                    rpm_raw=existing.rpm_raw,
+                    rpm_lpf=existing.rpm_lpf,
+                )
+                continue
+
+            rows[(gp_time, channel_index)] = OutputRow(
+                time_us=gp_time,
+                pulse_index=pulse_index,
+                revolution_index=revolution_index,
+                crank_angle_deg=angle_deg,
+                turn=0,
+                gp0_falling=1 if channel_index == 1 else 0,
+                gp1_falling=1 if channel_index == 2 else 0,
+                rpm_raw=None,
+                rpm_lpf=None,
+            )
+
+    return [rows[key] for key in sorted(rows)]
+
+
+def write_rpm(path: Path, rows: list[OutputRow]) -> None:
+    path.parent.mkdir(parents=True, exist_ok=True)
+    with path.open("w", newline="") as file:
+        writer = csv.writer(file)
+        writer.writerow(OUTPUT_COLUMNS)
+        for row in rows:
+            writer.writerow(
+                (
+                    row.time_us,
+                    "" if row.pulse_index is None else row.pulse_index,
+                    "" if row.revolution_index is None else row.revolution_index,
+                    "" if row.crank_angle_deg is None else f"{row.crank_angle_deg:.6f}",
+                    row.turn,
+                    row.gp0_falling,
+                    row.gp1_falling,
+                    "" if row.rpm_raw is None else f"{row.rpm_raw:.3f}",
+                    "" if row.rpm_lpf is None else f"{row.rpm_lpf:.3f}",
+                )
+            )
+
+
+def output_path_for(input_path: Path, input_root: Path, output_root: Path) -> Path:
+    relative = input_path.relative_to(input_root)
+    stem = relative.stem
+    if stem.endswith("_cleaned"):
+        stem = stem[: -len("_cleaned")]
+    return output_root / relative.with_name(f"{stem}_rpm.csv")
+
+
+def process_file(
+    input_path: Path,
+    output_path: Path,
+    *,
+    ppr: int,
+    filter_window: int,
+    filter_alpha: float,
+    hampel_sigma: float,
+) -> tuple[int, int]:
+    events = read_events(input_path)
+    samples, replaced = calculate_rpm(
+        events,
+        ppr=ppr,
+        filter_window=filter_window,
+        filter_alpha=filter_alpha,
+        hampel_sigma=hampel_sigma,
+    )
+    rows = build_output_rows(events, samples, ppr=ppr)
+    write_rpm(output_path, rows)
+    return len(samples), replaced
+
+
+def parse_args() -> argparse.Namespace:
+    parser = argparse.ArgumentParser(
+        description="Convert cleaned pulse event CSVs into raw and filtered RPM CSVs."
+    )
+    parser.add_argument(
+        "--input-root",
+        type=Path,
+        default=Path("recordings_cleaned"),
+        help="Folder to search recursively for cleaned CSV files.",
+    )
+    parser.add_argument(
+        "--output-root",
+        type=Path,
+        default=Path("recordings_rpm"),
+        help="Folder where RPM CSV files are written.",
+    )
+    parser.add_argument("--ppr", type=int, default=DEFAULT_PPR, help="Pulse encoder pulses per revolution.")
+    parser.add_argument(
+        "--filter-window",
+        type=int,
+        default=5,
+        help="Odd sample count for local despiking before low-pass filtering.",
+    )
+    parser.add_argument(
+        "--filter-alpha",
+        type=float,
+        default=0.45,
+        help="EMA alpha for the low-pass RPM column. Higher follows transients faster.",
+    )
+    parser.add_argument(
+        "--hampel-sigma",
+        type=float,
+        default=4.0,
+        help="Local median absolute deviation threshold for replacing single-sample outliers.",
+    )
+    return parser.parse_args()
+
+
+def main() -> int:
+    args = parse_args()
+
+    if not 0.0 < args.filter_alpha <= 1.0:
+        print("--filter-alpha must be in the range (0, 1].", file=sys.stderr)
+        return 1
+    if args.filter_window < 3:
+        print("--filter-window must be at least 3.", file=sys.stderr)
+        return 1
+
+    input_root = args.input_root
+    output_root = args.output_root
+    if not input_root.exists():
+        print(f"Input folder does not exist: {input_root}", file=sys.stderr)
+        return 1
+
+    csv_paths = sorted(path for path in input_root.rglob("*.csv") if not path.name.endswith("_rpm.csv"))
+    if not csv_paths:
+        print(f"No CSV files found under {input_root}", file=sys.stderr)
+        return 1
+
+    failures = 0
+    for input_path in csv_paths:
+        output_path = output_path_for(input_path, input_root, output_root)
+        try:
+            samples, replaced = process_file(
+                input_path,
+                output_path,
+                ppr=args.ppr,
+                filter_window=args.filter_window,
+                filter_alpha=args.filter_alpha,
+                hampel_sigma=args.hampel_sigma,
+            )
+        except (OSError, ValueError) as exc:
+            failures += 1
+            print(f"Skipping {input_path}: {exc}", file=sys.stderr)
+            continue
+
+        print(
+            f"{input_path} -> {output_path} "
+            f"samples={samples} despiked={replaced}"
+        )
+
+    return 1 if failures else 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())
--- a/Python/pyproject.toml
+++ b/Python/pyproject.toml
@@ -5,5 +5,6 @@ description = "Add your description here"
 readme = "README.md"
 requires-python = ">=3.14"
 dependencies = [
+    "matplotlib",
    "pyserial>=3.5",
 ]
--- a/Python/uv.lock
+++ b/Python/uv.lock
@@ -2,16 +2,238 @@ version = 1
 revision = 3
 requires-python = ">=3.14"

+[[package]]
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