openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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#define FAULT_STATUS_NONE 0U
#define FAULT_STATUS_TEMPORARY 1U
#define FAULT_STATUS_PERMANENT 2U
// Fault types
#define FAULT_RELAY_MALFUNCTION (1U << 0)
#define FAULT_UNUSED_INTERRUPT_HANDLED (1U << 1)
#define FAULT_INTERRUPT_RATE_CAN_1 (1U << 2)
#define FAULT_INTERRUPT_RATE_CAN_2 (1U << 3)
#define FAULT_INTERRUPT_RATE_CAN_3 (1U << 4)
#define FAULT_INTERRUPT_RATE_TACH (1U << 5)
#define FAULT_INTERRUPT_RATE_GMLAN (1U << 6)
#define FAULT_INTERRUPT_RATE_INTERRUPTS (1U << 7)
#define FAULT_INTERRUPT_RATE_SPI_DMA (1U << 8)
#define FAULT_INTERRUPT_RATE_SPI_CS (1U << 9)
#define FAULT_INTERRUPT_RATE_UART_1 (1U << 10)
#define FAULT_INTERRUPT_RATE_UART_2 (1U << 11)
#define FAULT_INTERRUPT_RATE_UART_3 (1U << 12)
#define FAULT_INTERRUPT_RATE_UART_5 (1U << 13)
#define FAULT_INTERRUPT_RATE_UART_DMA (1U << 14)
#define FAULT_INTERRUPT_RATE_USB (1U << 15)
#define FAULT_INTERRUPT_RATE_TIM1 (1U << 16)
#define FAULT_INTERRUPT_RATE_TIM3 (1U << 17)
#define FAULT_REGISTER_DIVERGENT (1U << 18)
// Permanent faults
#define PERMANENT_FAULTS 0U
uint8_t fault_status = FAULT_STATUS_NONE;
uint32_t faults = 0U;
void fault_occurred(uint32_t fault) {
faults |= fault;
if((PERMANENT_FAULTS & fault) != 0U){
puts("Permanent fault occurred: 0x"); puth(fault); puts("\n");
fault_status = FAULT_STATUS_PERMANENT;
} else {
puts("Temporary fault occurred: 0x"); puth(fault); puts("\n");
fault_status = FAULT_STATUS_TEMPORARY;
}
}
void fault_recovered(uint32_t fault) {
if((PERMANENT_FAULTS & fault) == 0U){
faults &= ~fault;
} else {
puts("Cannot recover from a permanent fault!\n");
}
}