message: Messages should have clean default parameters
diff: #define CAN_CLK_MHZ (42)
  typedef struct {
  - uint32_t id;
  - bool isExt;
  - uint8_t len;
  - uint8_t buf[8];
  + uint32_t id = 0x000; // 11-bit max is 0x7ff, 29-bit max is 0x1FFFFFFF
  + bool isExt = false;
  + uint8_t len = 8;
  + uint8_t buf[8] = {0, 0, 0, 0, 0, 0, 0, 0};
  } CAN_message_t;
  // Anonymous enum for defining the most common CAN baud rates
  