/********************************** (C) COPYRIGHT *******************************
* File Name : ch32v30x_can.h
* Author : WCH
* Version : V1.0.0
* Date : 2021/06/06
* Description : This file contains all the functions prototypes for the
* CAN firmware library.
*********************************************************************************
* Copyright (c) 2021 Nanjing Qinheng Microelectronics Co., Ltd.
* Attention: This software (modified or not) and binary are used for
* microcontroller manufactured by Nanjing Qinheng Microelectronics.
*******************************************************************************/
#ifndef __CH32V30x_CAN_H
#define __CH32V30x_CAN_H
#ifdef __cplusplus
extern "C" {
#endif
#include "ch32v30x.h"
/* CAN init structure definition */
typedef struct
{
uint16_t CAN_Prescaler; /* Specifies the length of a time quantum.
It ranges from 1 to 1024. */
uint8_t CAN_Mode; /* Specifies the CAN operating mode.
This parameter can be a value of
@ref CAN_operating_mode */
uint8_t CAN_SJW; /* Specifies the maximum number of time quanta
the CAN hardware is allowed to lengthen or
shorten a bit to perform resynchronization.
This parameter can be a value of
@ref CAN_synchronisation_jump_width */
uint8_t CAN_BS1; /* Specifies the number of time quanta in Bit
Segment 1. This parameter can be a value of
@ref CAN_time_quantum_in_bit_segment_1 */
uint8_t CAN_BS2; /* Specifies the number of time quanta in Bit
Segment 2.
This parameter can be a value of
@ref CAN_time_quantum_in_bit_segment_2 */
FunctionalState CAN_TTCM; /* Enable or disable the time triggered
communication mode. This parameter can be set
either to ENABLE or DISABLE. */
FunctionalState CAN_ABOM; /* Enable or disable the automatic bus-off
management. This parameter can be set either
to ENABLE or DISABLE. */
FunctionalState CAN_AWUM; /* Enable or disable the automatic wake-up mode.
This parameter can be set either to ENABLE or
DISABLE. */
FunctionalState CAN_NART; /* Enable or disable the no-automatic
retransmission mode. This parameter can be
set either to ENABLE or DISABLE. */
FunctionalState CAN_RFLM; /* Enable or disable the Receive FIFO Locked mode.
This parameter can be set either to ENABLE
or DISABLE. */
FunctionalState CAN_TXFP; /* Enable or disable the transmit FIFO priority.
This parameter can be set either to ENABLE
or DISABLE. */
} CAN_InitTypeDef;
/* CAN filter init structure definition */
typedef struct
{
uint16_t CAN_FilterIdHigh; /* Specifies the filter identification number (MSBs for a 32-bit
configuration, first one for a 16-bit configuration).
This parameter can be a value between 0x0000 and 0xFFFF */
uint16_t CAN_FilterIdLow; /* Specifies the filter identification number (LSBs for a 32-bit
configuration, second one for a 16-bit configuration).
This parameter can be a value between 0x0000 and 0xFFFF */
uint16_t CAN_FilterMaskIdHigh; /* Specifies the filter mask number or identification number,
according to the mode (MSBs for a 32-bit configuration,
first one for a 16-bit configuration).
This parameter can be a value between 0x0000 and 0xFFFF */
uint16_t CAN_FilterMaskIdLow; /* Specifies the filter mask number or identification number,
according to the mode (LSBs for a 32-bit configuration,
second one for a 16-bit configuration).
This parameter can be a value between 0x0000 and 0xFFFF */
uint16_t CAN_FilterFIFOAssignment; /* Specifies the FIFO (0 or 1) which will be assigned to the filter.
This parameter can be a value of @ref CAN_filter_FIFO */
uint8_t CAN_FilterNumber; /* Specifies the filter which will be initialized. It ranges from 0 to 13. */
uint8_t CAN_FilterMode; /* Specifies the filter mode to be initialized.
This parameter can be a value of @ref CAN_filter_mode */
uint8_t CAN_FilterScale; /* Specifies the filter scale.
This parameter can be a value of @ref CAN_filter_scale */
FunctionalState CAN_FilterActivation; /* Enable or disable the filter.
This parameter can be set either to ENABLE or DISABLE. */
} CAN_FilterInitTypeDef;
/* CAN Tx message structure definition */
typedef struct
{
uint32_t StdId; /* Specifies the standard identifier.
This parameter can be a value between 0 to 0x7FF. */
uint32_t ExtId; /* Specifies the extended identifier.
This parameter can be a value between 0 to 0x1FFFFFFF. */
uint8_t IDE; /* Specifies the type of identifier for the message that
will be transmitted. This parameter can be a value
of @ref CAN_identifier_type */
uint8_t RTR; /* Specifies the type of frame for the message that will
be transmitted. This parameter can be a value of
@ref CAN_remote_transmission_request */
uint8_t DLC; /* Specifies the length of the frame that will be
transmitted. This parameter can be a value between
0 to 8 */
uint8_t Data[8]; /* Contains the data to be transmitted. It ranges from 0
to 0xFF. */
} CanTxMsg;
/* CAN Rx message structure definition */
typedef struct
{
uint32_t StdId; /* Specifies the standard identifier.
This parameter can be a value between 0 to 0x7FF. */
uint32_t ExtId; /* Specifies the extended identifier.
This parameter can be a value between 0 to 0x1FFFFFFF. */
uint8_t IDE; /* Specifies the type of identifier for the message that
will be received. This parameter can be a value of
@ref CAN_identifier_type */
uint8_t RTR; /* Specifies the type of frame for the received message.
This parameter can be a value of
@ref CAN_remote_transmission_request */
uint8_t DLC; /* Specifies the length of the frame that will be received.
This parameter can be a value between 0 to 8 */
uint8_t Data[8]; /* Contains the data to be received. It ranges from 0 to
0xFF. */
uint8_t FMI; /* Specifies the index of the filter the message stored in
the mailbox passes through. This parameter can be a
value between 0 to 0xFF */
} CanRxMsg;
/* CAN_sleep_constants */
#define CAN_InitStatus_Failed ((uint8_t)0x00) /* CAN initialization failed */
#define CAN_InitStatus_Success ((uint8_t)0x01) /* CAN initialization OK */
/* CAN_Mode */
#define CAN_Mode_Normal ((uint8_t)0x00) /* normal mode */
#define CAN_Mode_LoopBack ((uint8_t)0x01) /* loopback mode */
#define CAN_Mode_Silent ((uint8_t)0x02) /* silent mode */
#define CAN_Mode_Silent_LoopBack ((uint8_t)0x03) /* loopback combined with silent mode */
/* CAN_Operating_Mode */
#define CAN_OperatingMode_Initialization ((uint8_t)0x00) /* Initialization mode */
#define CAN_OperatingMode_Normal ((uint8_t)0x01) /* Normal mode */
#define CAN_OperatingMode_Sleep ((uint8_t)0x02) /* sleep mode */
/* CAN_Mode_Status */
#define CAN_ModeStatus_Failed ((uint8_t)0x00) /* CAN entering the specific mode failed */
#define CAN_ModeStatus_Success ((uint8_t)!CAN_ModeStatus_Failed) /* CAN entering the specific mode Succeed */
/* CAN_synchronisation_jump_width */
#define CAN_SJW_1tq ((uint8_t)0x00) /* 1 time quantum */
#define CAN_SJW_2tq ((uint8_t)0x01) /* 2 time quantum */
#define CAN_SJW_3tq ((uint8_t)0x02) /* 3 time quantum */
#define CAN_SJW_4tq ((uint8_t)0x03) /* 4 time quantum */
/* CAN_time_quantum_in_bit_segment_1 */
#define CAN_BS1_1tq ((uint8_t)0x00) /* 1 time quantum */
#define CAN_BS1_2tq ((uint8_t)0x01) /* 2 time quantum */
#define CAN_BS1_3tq ((uint8_t)0x02) /* 3 time quantum */
#define CAN_BS1_4tq ((uint8_t)0x03) /* 4 time quantum */
#define CAN_BS1_5tq ((uint8_t)0x04) /* 5 time quantum */
#define CAN_BS1_6tq ((uint8_t)0x05) /* 6 time quantum */
#define CAN_BS1_7tq ((uint8_t)0x06) /* 7 time quantum */
#define CAN_BS1_8tq ((uint8_t)0x07) /* 8 time quantum */
#define CAN_BS1_9tq ((uint8_t)0x08) /* 9 time quantum */
#define CAN_BS1_10tq ((uint8_t)0x09) /* 10 time quantum */
#define CAN_BS1_11tq ((uint8_t)0x0A) /* 11 time quantum */
#define CAN_BS1_12tq ((uint8_t)0x0B) /* 12 time quantum */
#define CAN_BS1_13tq ((uint8_t)0x0C) /* 13 time quantum */
#define CAN_BS1_14tq ((uint8_t)0x0D) /* 14 time quantum */
#define CAN_BS1_15tq ((uint8_t)0x0E) /* 15 time quantum */
#define CAN_BS1_16tq ((uint8_t)0x0F) /* 16 time quantum */
/* CAN_time_quantum_in_bit_segment_2 */
#define CAN_BS2_1tq ((uint8_t)0x00) /* 1 time quantum */
#define CAN_BS2_2tq ((uint8_t)0x01) /* 2 time quantum */
#define CAN_BS2_3tq ((uint8_t)0x02) /* 3 time quantum */
#define CAN_BS2_4tq ((uint8_t)0x03) /* 4 time quantum */
#define CAN_BS2_5tq ((uint8_t)0x04) /* 5 time quantum */
#define CAN_BS2_6tq ((uint8_t)0x05) /* 6 time quantum */
#define CAN_BS2_7tq ((uint8_t)0x06) /* 7 time quantum */
#define CAN_BS2_8tq ((uint8_t)0x07) /* 8 time quantum */
/* CAN_filter_mode */
#define CAN_FilterMode_IdMask ((uint8_t)0x00) /* identifier/mask mode */
#define CAN_FilterMode_IdList ((uint8_t)0x01) /* identifier list mode */
/* CAN_filter_scale */
#define CAN_FilterScale_16bit ((uint8_t)0x00) /* Two 16-bit filters */
#define CAN_FilterScale_32bit ((uint8_t)0x01) /* One 32-bit filter */
/* CAN_filter_FIFO */
#define CAN_Filter_FIFO0 ((uint8_t)0x00) /* Filter FIFO 0 assignment for filter x */
#define CAN_Filter_FIFO1 ((uint8_t)0x01) /* Filter FIFO 1 assignment for filter x */
/* CAN_identifier_type */
#define CAN_Id_Standard ((uint32_t)0x00000000) /* Standard Id */
#define CAN_Id_Extended ((uint32_t)0x00000004) /* Extended Id */
/* CAN_remote_transmission_request */
#define CAN_RTR_Data ((uint32_t)0x00000000) /* Data frame */
#define CAN_RTR_Remote ((uint32_t)0x00000002) /* Remote frame */
/* CAN_transmit_constants */
#define CAN_TxStatus_Failed ((uint8_t)0x00)/* CAN transmission failed */
#define CAN_TxStatus_Ok ((uint8_t)0x01) /* CAN transmission succeeded */
#define CAN_TxStatus_Pending ((uint8_t)0x02) /* CAN transmission pending */
#define CAN_TxStatus_NoMailBox ((uint8_t)0x04) /* CAN cell did not provide an empty mailbox */
/* CAN_receive_FIFO_number_constants */
#define CAN_FIFO0 ((uint8_t)0x00) /* CAN FIFO 0 used to receive */
#define CAN_FIFO1 ((uint8_t)0x01) /* CAN FIFO 1 used to receive */
/* CAN_sleep_constants */
#define CAN_Sleep_Failed ((uint8_t)0x00) /* CAN did not enter the sleep mode */
#define CAN_Sleep_Ok ((uint8_t)0x01) /* CAN entered the sleep mode */
/* CAN_wake_up_constants */
#define CAN_WakeUp_Failed ((uint8_t)0x00) /* CAN did not leave the sleep mode */
#define CAN_WakeUp_Ok ((uint8_t)0x01) /* CAN leaved the sleep mode */
/* CAN_Error_Code_constants */
#define CAN_ErrorCode_NoErr ((uint8_t)0x00) /* No Error */
#define CAN_ErrorCode_StuffErr ((uint8_t)0x10) /* Stuff Error */
#define CAN_ErrorCode_FormErr ((uint8_t)0x20) /* Form Error */
#define CAN_ErrorCode_ACKErr ((uint8_t)0x30) /* Acknowledgment Error */
#define CAN_ErrorCode_BitRecessiveErr ((uint8_t)0x40) /* Bit Recessive Error */
#define CAN_ErrorCode_BitDominantErr ((uint8_t)0x50) /* Bit Dominant Error */
#define CAN_ErrorCode_CRCErr ((uint8_t)0x60) /* CRC Error */
#define CAN_ErrorCode_SoftwareSetErr ((uint8_t)0x70) /* Software Set Error */
/* CAN_flags */
/* If the flag is 0x3XXXXXXX, it means that it can be used with CAN_GetFlagStatus()
* and CAN_ClearFlag() functions.
* If the flag is 0x1XXXXXXX, it means that it can only be used with CAN_GetFlagStatus() function.
*/
/* Transmit Flags */
#define CAN_FLAG_RQCP0 ((uint32_t)0x38000001) /* Request MailBox0 Flag */
#define CAN_FLAG_RQCP1 ((uint32_t)0x38000100) /* Request MailBox1 Flag */
#define CAN_FLAG_RQCP2 ((uint32_t)0x38010000) /* Request MailBox2 Flag */
/* Receive Flags */
#define CAN_FLAG_FMP0 ((uint32_t)0x12000003) /* FIFO 0 Message Pending Flag */
#define CAN_FLAG_FF0 ((uint32_t)0x32000008) /* FIFO 0 Full Flag */
#define CAN_FLAG_FOV0 ((uint32_t)0x32000010) /* FIFO 0 Overrun Flag */
#define CAN_FLAG_FMP1 ((uint32_t)0x14000003) /* FIFO 1 Message Pending Flag */
#define CAN_FLAG_FF1 ((uint32_t)0x34000008) /* FIFO 1 Full Flag */
#define CAN_FLAG_FOV1 ((uint32_t)0x34000010) /* FIFO 1 Overrun Flag */
/* Operating Mode Flags */
#define CAN_FLAG_WKU ((uint32_t)0x31000008) /* Wake up Flag */
#define CAN_FLAG_SLAK ((uint32_t)0x31000012) /* Sleep acknowledge Flag */
/* Note:
*When SLAK intterupt is disabled (SLKIE=0), no polling on SLAKI is possible.
*In this case the SLAK bit can be polled.
*/
/* Error Flags */
#define CAN_FLAG_EWG ((uint32_t)0x10F00001) /* Error Warning Flag */
#define CAN_FLAG_EPV ((uint32_t)0x10F00002) /* Error Passive Flag */
#define CAN_FLAG_BOF ((uint32_t)0x10F00004) /* Bus-Off Flag */
#define CAN_FLAG_LEC ((uint32_t)0x30F00070) /* Last error code Flag */
/* CAN_interrupts */
#define CAN_IT_TME ((uint32_t)0x00000001) /* Transmit mailbox empty Interrupt*/
/* Receive Interrupts */
#define CAN_IT_FMP0 ((uint32_t)0x00000002) /* FIFO 0 message pending Interrupt*/
#define CAN_IT_FF0 ((uint32_t)0x00000004) /* FIFO 0 full Interrupt*/
#define CAN_IT_FOV0 ((uint32_t)0x00000008) /* FIFO 0 overrun Interrupt*/
#define CAN_IT_FMP1 ((uint32_t)0x00000010) /* FIFO 1 message pending Interrupt*/
#define CAN_IT_FF1 ((uint32_t)0x00000020) /* FIFO 1 full Interrupt*/
#define CAN_IT_FOV1 ((uint32_t)0x00000040) /* FIFO 1 overrun Interrupt*/
/* Operating Mode Interrupts */
#define CAN_IT_WKU ((uint32_t)0x00010000) /* Wake-up Interrupt*/
#define CAN_IT_SLK ((uint32_t)0x00020000) /* Sleep acknowledge Interrupt*/
/* Error Interrupts */
#define CAN_IT_EWG ((uint32_t)0x00000100) /* Error warning Interrupt*/
#define CAN_IT_EPV ((uint32_t)0x00000200) /* Error passive Interrupt*/
#define CAN_IT_BOF ((uint32_t)0x00000400) /* Bus-off Interrupt*/
#define CAN_IT_LEC ((uint32_t)0x00000800) /* Last error code Interrupt*/
#define CAN_IT_ERR ((uint32_t)0x00008000) /* Error Interrupt*/
/* Flags named as Interrupts : kept only for FW compatibility */
#define CAN_IT_RQCP0 CAN_IT_TME
#define CAN_IT_RQCP1 CAN_IT_TME
#define CAN_IT_RQCP2 CAN_IT_TME
/* CAN_Legacy */
#define CANINITFAILED CAN_InitStatus_Failed
#define CANINITOK CAN_InitStatus_Success
#define CAN_FilterFIFO0 CAN_Filter_FIFO0
#define CAN_FilterFIFO1 CAN_Filter_FIFO1
#define CAN_ID_STD CAN_Id_Standard
#define CAN_ID_EXT CAN_Id_Extended
#define CAN_RTR_DATA CAN_RTR_Data
#define CAN_RTR_REMOTE CAN_RTR_Remote
#define CANTXFAILE CAN_TxStatus_Failed
#define CANTXOK CAN_TxStatus_Ok
#define CANTXPENDING CAN_TxStatus_Pending
#define CAN_NO_MB CAN_TxStatus_NoMailBox
#define CANSLEEPFAILED CAN_Sleep_Failed
#define CANSLEEPOK CAN_Sleep_Ok
#define CANWAKEUPFAILED CAN_WakeUp_Failed
#define CANWAKEUPOK CAN_WakeUp_Ok
void CAN_DeInit(CAN_TypeDef* CANx);
uint8_t CAN_Init(CAN_TypeDef* CANx, CAN_InitTypeDef* CAN_InitStruct);
void CAN_FilterInit(CAN_FilterInitTypeDef* CAN_FilterInitStruct);
void CAN_StructInit(CAN_InitTypeDef* CAN_InitStruct);
void CAN_SlaveStartBank(uint8_t CAN_BankNumber);
void CAN_DBGFreeze(CAN_TypeDef* CANx, FunctionalState NewState);
void CAN_TTComModeCmd(CAN_TypeDef* CANx, FunctionalState NewState);
uint8_t CAN_Transmit(CAN_TypeDef* CANx, CanTxMsg* TxMessage);
uint8_t CAN_TransmitStatus(CAN_TypeDef* CANx, uint8_t TransmitMailbox);
void CAN_CancelTransmit(CAN_TypeDef* CANx, uint8_t Mailbox);
void CAN_Receive(CAN_TypeDef* CANx, uint8_t FIFONumber, CanRxMsg* RxMessage);
void CAN_FIFORelease(CAN_TypeDef* CANx, uint8_t FIFONumber);
uint8_t CAN_MessagePending(CAN_TypeDef* CANx, uint8_t FIFONumber);
uint8_t CAN_OperatingModeRequest(CAN_TypeDef* CANx, uint8_t CAN_OperatingMode);
uint8_t CAN_Sleep(CAN_TypeDef* CANx);
uint8_t CAN_WakeUp(CAN_TypeDef* CANx);
uint8_t CAN_GetLastErrorCode(CAN_TypeDef* CANx);
uint8_t CAN_GetReceiveErrorCounter(CAN_TypeDef* CANx);
uint8_t CAN_GetLSBTransmitErrorCounter(CAN_TypeDef* CANx);
void CAN_ITConfig(CAN_TypeDef* CANx, uint32_t CAN_IT, FunctionalState NewState);
FlagStatus CAN_GetFlagStatus(CAN_TypeDef* CANx, uint32_t CAN_FLAG);
void CAN_ClearFlag(CAN_TypeDef* CANx, uint32_t CAN_FLAG);
ITStatus CAN_GetITStatus(CAN_TypeDef* CANx, uint32_t CAN_IT);
void CAN_ClearITPendingBit(CAN_TypeDef* CANx, uint32_t CAN_IT);
#ifdef __cplusplus
}
#endif
#endif