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Daniel 2024-02-25 12:25:42 +02:00
parent 25b0a7da65
commit a9b7c0b2a7
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41
Software/src/battery/BMW-I3-BATTERY.cpp
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@ -31,6 +31,8 @@ static const int interval2000 = 2000; // interval (ms) at which send CA
static const int interval5000 = 5000; // interval (ms) at which send CAN Messages
static const int interval10000 = 10000; // interval (ms) at which send CAN Messages
static uint8_t CANstillAlive = 12; // counter for checking if CAN is still alive
static uint16_t CANerror = 0; // counter on how many CAN errors encountered
#define MAX_CAN_FAILURES 5000; // Amount of malformed CAN messages to allow before raising a warning
static const uint16_t WUPonDuration = 477; // in milliseconds how long WUP should be ON after poweron
static const uint16_t WUPoffDuration = 105; // in milliseconds how long WUP should be OFF after on pulse
@ -39,6 +41,26 @@ unsigned long turnOnTime; // Variables to store timestamps
enum State { POWERON, STATE_ON, STATE_OFF, STATE_STAY_ON };
static State WUPState = POWERON;
const unsigned char crc8_table[256] = {
0x00, 0x64, 0xC8, 0xAC, 0xE1, 0x85, 0x29, 0x4D, 0xB3, 0xD7, 0x7B, 0x1F, 0x52, 0x36, 0x9A, 0xFE,
0x17, 0x73, 0xDF, 0xBB, 0xF6, 0x92, 0x3E, 0x5A, 0xA4, 0xC0, 0x6C, 0x08, 0x45, 0x21, 0x8D, 0xE9,
0x2E, 0x4A, 0xE6, 0x82, 0xCF, 0xAB, 0x07, 0x63, 0x9D, 0xF9, 0x55, 0x31, 0x7C, 0x18, 0xB4, 0xD0,
0x39, 0x5D, 0xF1, 0x95, 0xD8, 0xBC, 0x10, 0x74, 0x8A, 0xEE, 0x42, 0x26, 0x6B, 0x0F, 0xA3, 0xC7,
0x5C, 0x38, 0x94, 0xF0, 0xBD, 0xD9, 0x75, 0x11, 0xEF, 0x8B, 0x27, 0x43, 0x0E, 0x6A, 0xC6, 0xA2,
0x4B, 0x2F, 0x83, 0xE7, 0xAA, 0xCE, 0x62, 0x06, 0xF8, 0x9C, 0x30, 0x54, 0x19, 0x7D, 0xD1, 0xB5,
0x72, 0x16, 0xBA, 0xDE, 0x93, 0xF7, 0x5B, 0x3F, 0xC1, 0xA5, 0x09, 0x6D, 0x20, 0x44, 0xE8, 0x8C,
0x65, 0x01, 0xAD, 0xC9, 0x84, 0xE0, 0x4C, 0x28, 0xD6, 0xB2, 0x1E, 0x7A, 0x37, 0x53, 0xFF, 0x9B,
0xB8, 0xDC, 0x70, 0x14, 0x59, 0x3D, 0x91, 0xF5, 0x0B, 0x6F, 0xC3, 0xA7, 0xEA, 0x8E, 0x22, 0x46,
0xAF, 0xCB, 0x67, 0x03, 0x4E, 0x2A, 0x86, 0xE2, 0x1C, 0x78, 0xD4, 0xB0, 0xFD, 0x99, 0x35, 0x51,
0x96, 0xF2, 0x5E, 0x3A, 0x77, 0x13, 0xBF, 0xDB, 0x25, 0x41, 0xED, 0x89, 0xC4, 0xA0, 0x0C, 0x68,
0x81, 0xE5, 0x49, 0x2D, 0x60, 0x04, 0xA8, 0xCC, 0x32, 0x56, 0xFA, 0x9E, 0xD3, 0xB7, 0x1B, 0x7F,
0xE4, 0x80, 0x2C, 0x48, 0x05, 0x61, 0xCD, 0xA9, 0x57, 0x33, 0x9F, 0xFB, 0xB6, 0xD2, 0x7E, 0x1A,
0xF3, 0x97, 0x3B, 0x5F, 0x12, 0x76, 0xDA, 0xBE, 0x40, 0x24, 0x88, 0xEC, 0xA1, 0xC5, 0x69, 0x0D,
0xCA, 0xAE, 0x02, 0x66, 0x2B, 0x4F, 0xE3, 0x87, 0x79, 0x1D, 0xB1, 0xD5, 0x98, 0xFC, 0x50, 0x34,
0xDD, 0xB9, 0x15, 0x71, 0x3C, 0x58, 0xF4, 0x90, 0x6E, 0x0A, 0xA6, 0xC2, 0x8F, 0xEB, 0x47, 0x23
};
CAN_frame_t BMW_10B = {.FIR = {.B =
{
.DLC = 3,
@ -581,6 +603,13 @@ void update_values_battery() { //This function maps all the values fetched via
CANstillAlive--;
clear_event(EVENT_CAN_RX_FAILURE);
}
// Check if we have encountered any malformed CAN messages
if (CANerror >
MAX_CAN_FAILURES) //Also check if we have recieved too many malformed CAN messages. If so, signal via LED
{
errorCode = 10;
set_event(EVENT_CAN_RX_WARNING, 0);
}
#ifdef DEBUG_VIA_USB
Serial.print("Battery values: ");
@ -631,6 +660,10 @@ void receive_can_battery(CAN_frame_t rx_frame) {
DC_link = rx_frame.data.u8[7];
break;
case 0x239: //BMS [200ms]
if (is_message_corrupt(rx_frame)) {
CANerror++;
break; //Message content malformed, abort reading data from it
}
TemperatureMaxMaybe = rx_frame.data.u8[2];
break;
case 0x2F5: //BMS [100ms]
@ -990,6 +1023,14 @@ void send_can_battery() {
}
}
bool is_message_corrupt(CAN_frame_t rx_frame, uint8_t length) {
uint8_t crc = 0;
for (uint8_t j = 0; j < length; j++) {
crc = crc8_table[(crc ^ static_cast<uint8_t>(rx_frame.data.u8[j])) % 256];
}
return crc != rx_frame.data.u8[length];
}
void setup_battery(void) { // Performs one time setup at startup
Serial.println("BMW i3 battery selected");