CAN_TypeDef details

[jgauthier]

Where can I find a document that details out the information of the bits, and how to use them, for the CAN_TypeDef structure?

http://stm32.kosyak.info/doc/struct_c_a_n___type_def.html

I am using an stm32L432, and stm32g0b, but I think the reference is the same for most of the MPUs that use bxCan.

[Pavel A.]

For STM32L4 you want to use its specific header file, rather than something of STM32F10

https://github.com/STMicroelectronics/cmsis_device_l4/blob/master/Include/stm32l432xx.h

[jgauthier]

It doesn't document how to use them.

ie:

typedef struct
{
  __IO uint32_t TIR;  /*!< CAN TX mailbox identifier register */
  __IO uint32_t TDTR; /*!< CAN mailbox data length control and time stamp register */
  __IO uint32_t TDLR; /*!< CAN mailbox data low register */
  __IO uint32_t TDHR; /*!< CAN mailbox data high register */
} CAN_TxMailBox_TypeDef;

The only reference to TIR in that file.

		/* Request transmission */
		SET_BIT(hcan->Instance->sTxMailBox[TxMailbox].TIR, CAN_TI0R_TXRQ)

This is in HAL_CAN_AddTxMessage()

Also,

		/* Set up the Transmit Global Time mode */
		if (pHeader->TransmitGlobalTime == ENABLE) {
			SET_BIT(hcan->Instance->sTxMailBox[TxMailbox].TDTR, CAN_TDT0R_TGT);
		}

I'm looking for documentation on what to do with these registers.

[SofLit]

Hello,

You can refer to STM32L4xx reference manual RM0394 / section 44 and more specifically the section 44.9 CAN registers that provides detailed descriptions of different bits.