CAN initializing issue

[snehadakhare01]

Hi ST-Community

I am working on CAN Communication in F103
When I am de-initializing properly , But when , I am reinitializing it is not working
Please tell me how to reinitialize CAN Communication

if (0 == HAL_GPIO_ReadPin(BRAKE_GPIO_Port, BRAKE_Pin)) {
		Display.out.brake = 0x20;
		ControlVals.brakeStatus = 1;
		if (Communication.CAN_D_I == 0) {
			if (HAL_CAN_DeInit(&hcan) != HAL_OK) {
				Error_Handler();
			}
			Communication.CAN_D_I = 1;
		}
		else {
			Display.out.brake = 0x00;
			ControlVals.brakeStatus = 0;
			if (Communication.CAN_D_I == 1) {
				if (HAL_CAN_Init(&hcan) != HAL_OK) {
					Error_Handler();
				}
                             Communication.CAN_D_I = 0;
			}
		}
	}

[SofLit · Accepted solution]

Hello,

To go from Normal mode to init mode or vice versa you need to check this figure in the reference manual:

Your node needs to detect 11 consecutive recessive bits on the bus otherwise it keeps blocked mainly if the bus is overloaded.