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Add some best guess CAN mappings

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Daniel Öster 2025-03-15 14:55:37 +02:00
parent 8b2aa2cdba
commit e285bdd492
1 changed files with 13 additions and 2 deletions
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15
Software/src/battery/CMFA-EV-BATTERY.cpp
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@ -51,10 +51,14 @@ static uint8_t content_135[16] = {0x85, 0xD5, 0x25, 0x75, 0xC5, 0x15, 0x65, 0xB5
static unsigned long previousMillis100ms = 0; static unsigned long previousMillis100ms = 0;
static unsigned long previousMillis10ms = 0; static unsigned long previousMillis10ms = 0;
static uint8_t heartbeat = 0; //Alternates between 0x55 and 0xAA every 5th frame
static uint8_t heartbeat2 = 0; //Alternates between 0x55 and 0xAA every 5th frame
static uint8_t SOC = 0;
void update_values_battery() { //This function maps all the values fetched via CAN to the correct parameters used for modbus void update_values_battery() { //This function maps all the values fetched via CAN to the correct parameters used for modbus
datalayer.battery.status.soh_pptt; datalayer.battery.status.soh_pptt;
datalayer.battery.status.real_soc; datalayer.battery.status.real_soc = SOC * 100; // Add two decimals
datalayer.battery.status.current_dA; datalayer.battery.status.current_dA;
@ -79,25 +83,32 @@ void update_values_battery() { //This function maps all the values fetched via
void handle_incoming_can_frame_battery(CAN_frame rx_frame) { void handle_incoming_can_frame_battery(CAN_frame rx_frame) {
switch (rx_frame.ID) { //These frames are transmitted by the battery switch (rx_frame.ID) { //These frames are transmitted by the battery
case 0x127: case 0x127: //10ms
datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE; datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE;
//value1 = ((rx_frame.data.u8[0] << 2 | (rx_frame.data.u8[1] & 0xC0) >> 6)); //value1 = ((rx_frame.data.u8[0] << 2 | (rx_frame.data.u8[1] & 0xC0) >> 6));
//value2 = ((rx_frame.data.u8[0] << 2 | (rx_frame.data.u8[1] & 0xC0) >> 6)); //value2 = ((rx_frame.data.u8[0] << 2 | (rx_frame.data.u8[1] & 0xC0) >> 6));
SOC = rx_frame.data.u8[7];
break; break;
case 0x3D6: case 0x3D6:
datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE; datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE;
heartbeat = rx_frame.data.u8[6]; //Alternates between 0x55 and 0xAA every 5th frame
break; break;
case 0x3D7: case 0x3D7:
datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE; datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE;
break; break;
case 0x3D8: case 0x3D8:
datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE; datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE;
//counter_3D8 = rx_frame.data.u8[3]; //?
//CRC_3D8 = rx_frame.data.u8[4]; //?
break; break;
case 0x43C: case 0x43C:
datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE; datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE;
heartbeat2 = rx_frame.data.u8[2]; //Alternates between 0x55 and 0xAA every 5th frame
break; break;
case 0x431: case 0x431:
datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE; datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE;
//byte0 9C always
//byte1 40 always
break; break;
case 0x5A9: case 0x5A9:
datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE; datalayer.battery.status.CAN_battery_still_alive = CAN_STILL_ALIVE;