WIP use both

Author: zjwhitehead

inc/sp140/bms.h

@@ -1,19 +1,29 @@
 #pragma once
 
 #include <Arduino.h>
-#include <SPI.h>
-#include <BMS_CAN.h>
-
+#include "driver/twai.h"
 #include "sp140/structs.h"
 
-// BMS-related constants
-#define MCP_CS 5        // MCP2515 CS pin
-#define MCP_BAUDRATE 250000
+// BMS CAN message IDs (from ANT BMS protocol)
+#define BMS_BASIC_INFO_1     0x18FF28F4  // SOC, voltage, current, status flags
+#define BMS_BASIC_INFO_2     0x18FE28F4  // Cell voltages, temperatures
+#define BMS_CYCLE_INFO       0x18A328F4  // Battery cycle information
+#define BMS_BATTERY_ID_BASE  0x18A028F4  // Battery ID parsing (base address)
+#define BMS_TEMPERATURE      0x18B428F4  // Battery temperature parsing
+#define BMS_CELL_VOLTAGE_BASE 0x18C828F4 // Per-cell voltage frames (base address)
+
+// BMS constants
+#define BMS_TIMEOUT_MS 1000              // Timeout for BMS connection
+#define BMS_MAX_TEMPERATURES 8           // Maximum number of temperature sensors
+#define BMS_MAX_CELLS 24                 // Maximum number of battery cells
 
 // External declarations
 extern STR_BMS_TELEMETRY_140 bmsTelemetryData;
-extern BMS_CAN* bms_can;
+extern bool bmsTwaiInitialized;
 
 // BMS functions
+void initBMS();
 void updateBMSData();
+void parseBMSPacket(const twai_message_t* message);
+bool isBMSConnected();
 void printBMSData();

inc/sp140/globals.h

@@ -21,7 +21,7 @@ extern UnifiedBatteryData unifiedBatteryData;  // Instance to hold battery data
 extern STR_BMS_TELEMETRY_140 bmsTelemetryData;
 
 // Hardware/Connection Status Flags
-extern bool bmsCanInitialized;
+extern bool bmsTwaiInitialized;  // BMS now uses TWAI instead of SPI
 extern bool escTwaiInitialized;
 
 #endif  // INC_SP140_GLOBALS_H_

platformio.ini

@@ -49,11 +49,8 @@ lib_deps =
 	adafruit/Adafruit BMP3XX Library@2.1.6
 	adafruit/Adafruit ST7735 and ST7789 Library@1.11.0
 	adafruit/Adafruit NeoPixel@1.14.0
-	adafruit/Adafruit CAN@0.2.1
-	adafruit/Adafruit MCP2515@0.2.1
 	https://github.com/rlogiacco/CircularBuffer@1.4.0
 	https://github.com/openppg/SINE-ESC-CAN
-	https://github.com/openppg/ANT-BMS-CAN#97170331e1faedb5435657806ad6f9579de9552f
 	lvgl/lvgl@^8.3.11
 lib_ignore =
 	Adafruit SleepyDog Library