backup_ram.cpp File Reference

Functions
uint32_t	backupRamLoad (backup_ram_e idx)
void	backupRamSave (backup_ram_e idx, uint32_t value)

Function Documentation

backupRamLoad()

uint32_t backupRamLoad

(

backup_ram_e

idx

)

Definition at line 9 of file backup_ram.cpp.

                                         {
#if HAL_USE_RTC
    switch (idx) {
    case BACKUP_STEPPER_POS:
        return RTCD1.rtc->BKP0R & 0xffff;
    case BACKUP_IGNITION_SWITCH_COUNTER:
        return (RTCD1.rtc->BKP0R >> 16) & 0xff;
    case BACKUP_CJ125_CALIBRATION_LAMBDA:
        return RTCD1.rtc->BKP1R & 0xffff;
    case BACKUP_CJ125_CALIBRATION_HEATER:
        return (RTCD1.rtc->BKP1R >> 16) & 0xffff;
// it is assembly code which reads this value
//  case DFU_JUMP_REQUESTED:
//      return RTCD1.rtc->BKP4R;
    default:
        firmwareError(OBD_PCM_Processor_Fault, "Invalid backup ram idx %d", idx);
        return 0;
    }
#else
    return 0;
#endif /* HAL_USE_RTC */
}

Referenced by cjStart(), StepperMotor::loadStepperPos(), and startPrimeInjectionPulse().

backupRamSave()

void backupRamSave	(	backup_ram_e	idx,
		uint32_t	value
	)

Definition at line 32 of file backup_ram.cpp.

                                                     {
#if HAL_USE_RTC
    switch (idx) {
    case BACKUP_STEPPER_POS:
        RTCD1.rtc->BKP0R = (RTCD1.rtc->BKP0R & ~0x0000ffff) | (value & 0xffff);
        break;
    case BACKUP_IGNITION_SWITCH_COUNTER:
        RTCD1.rtc->BKP0R = (RTCD1.rtc->BKP0R & ~0x00ff0000) | ((value & 0xff) << 16);
        break;
    case BACKUP_CJ125_CALIBRATION_LAMBDA:
        RTCD1.rtc->BKP1R = (RTCD1.rtc->BKP1R & ~0x0000ffff) | (value & 0xffff);
        break;
    case BACKUP_CJ125_CALIBRATION_HEATER:
        RTCD1.rtc->BKP1R = (RTCD1.rtc->BKP1R & ~0xffff0000) | ((value & 0xffff) << 16);
        break;
// todo: start using this code
    case DFU_JUMP_REQUESTED:
        RTCD1.rtc->BKP4R = value;
        break;
    default:
        firmwareError(OBD_PCM_Processor_Fault, "Invalid backup ram idx %d, value 0x08x", idx, value);
        break;
    }
#endif /* HAL_USE_RTC */
}

Referenced by CJ125::calibrate(), StepperMotor::saveStepperPos(), startPrimeInjectionPulse(), and updatePrimeInjectionPulseState().

Go to the source code of this file.