Add raw potentiometer value to controller telemetry

Included the raw potentiometer (throttle) reading in the BLE controller telemetry struct and update logic. Added getLastThrottleRaw() to provide the most recent throttle value, and updated relevant BLE services to use this accessor for consistent data reporting.

Author: zjwhitehead

inc/sp140/ble/controller_service.h

@@ -8,7 +8,7 @@ class NimBLEServer;
 // Initialize the controller telemetry BLE service
 void initControllerBleService(NimBLEServer* server);
 
-// Update controller telemetry (altitude, baro, vario, mcu_temp, uptime)
+// Update controller telemetry (altitude, baro, vario, mcu_temp, pot, uptime)
 // Internally throttled to 1Hz - safe to call frequently
 void updateControllerPackedTelemetry(float altitude, float baro_temp,
                                       float vario, float mcu_temp);

inc/sp140/structs.h

@@ -175,14 +175,15 @@ typedef struct {
   uint32_t lastUpdateMs;        // Timestamp of last update
 } BLE_ESC_Telemetry_V1;
 
-// Binary packed Controller telemetry for BLE transmission (~21 bytes)
+// Binary packed Controller telemetry for BLE transmission (~23 bytes)
 // Contains ESP32 sensor data and system status
 typedef struct {
   uint8_t version;              // Protocol version (1)
   float altitude;               // Barometric altitude (m)
   float baro_temp;              // Barometric sensor temperature (°C)
   float vario;                  // Vertical speed (m/s)
   float mcu_temp;               // Internal ESP32 temperature (°C)
+  uint16_t pot_raw;             // Raw potentiometer reading (0..4095)
   uint32_t uptime_ms;           // Time since boot (ms)
 } BLE_Controller_Telemetry_V1;
 

inc/sp140/throttle.h

@@ -41,6 +41,9 @@ void initThrottleInput();
 /** Read raw throttle value from ADC (0..4095). */
 uint16_t readThrottleRaw();
 
+/** Get the most recently sampled raw throttle value (0..4095). */
+uint16_t getLastThrottleRaw();
+
 /** Convert raw pot reading (0..4095) to PWM microseconds. */
 int potRawToPwm(uint16_t raw);
 

src/sp140/ble/config_service.cpp

@@ -84,7 +84,7 @@ class ScreenRotationCallbacks : public NimBLECharacteristicCallbacks {
 class ThrottleValueCallbacks : public NimBLECharacteristicCallbacks {
   void onRead(NimBLECharacteristic* characteristic, NimBLEConnInfo& connInfo) override {
     (void)connInfo;
-    uint16_t potVal = readThrottleRaw();
+    uint16_t potVal = getLastThrottleRaw();
     characteristic->setValue(reinterpret_cast<uint8_t*>(&potVal), sizeof(potVal));
   }
 

src/sp140/ble/controller_service.cpp

@@ -4,6 +4,7 @@
 
 #include "sp140/ble.h"
 #include "sp140/ble/ble_ids.h"
+#include "sp140/throttle.h"
 
 namespace {
 
@@ -54,6 +55,7 @@ void updateControllerPackedTelemetry(float altitude, float baro_temp,
   packet.baro_temp = baro_temp;
   packet.vario = vario;
   packet.mcu_temp = mcu_temp;
+  packet.pot_raw = getLastThrottleRaw();
   packet.uptime_ms = static_cast<uint32_t>(millis());
 
   pControllerPackedTelemetry->setValue(

src/sp140/throttle.cpp

@@ -9,6 +9,7 @@ extern HardwareConfig board_config;
 
 // Internal PWM smoothing buffer (8 samples)
 static CircularBuffer<int, 8> pwmBuffer;
+static volatile uint16_t last_pot_raw = 0;
 
 /**
  * Throttle easing function based on threshold/performance mode
@@ -45,7 +46,13 @@ void initThrottleInput() {
  * Range: 0..4095 (12-bit).
  */
 uint16_t readThrottleRaw() {
-  return analogRead(board_config.throttle_pin);
+  uint16_t raw = analogRead(board_config.throttle_pin);
+  last_pot_raw = raw;
+  return raw;
+}
+
+uint16_t getLastThrottleRaw() {
+  return last_pot_raw;
 }
 
 /** Map raw ADC (0..4095) to PWM (ESC_MIN_PWM..ESC_MAX_PWM). */