sani7/STM32HAL-MCP2515
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found the missing consts in the original library

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This commit is contained in:
Sander Speetjens
2025-02-21 17:41:31 +01:00
parent a70e67a4e7
commit d6b1272fcb
2 changed files with 32 additions and 0 deletions
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6
mcp2515.h
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@@ -56,6 +56,12 @@ typedef struct {
uint16_t cs_pin;
} MCP2515_HandleTypeDef;
typedef struct can_frame_s {
uint32_t can_id; /* 32 bit CAN_ID + EFF/RTR/ERR flags */
uint8_t can_dlc;
uint8_t data[8];
} can_frame_t;
void MCP2515_Init(MCP2515_HandleTypeDef* hcan, SPI_HandleTypeDef* hspi, GPIO_TypeDef* cs_port, uint16_t cs_pin);
CAN_Error MCP2515_Reset(MCP2515_HandleTypeDef* hcan);
uint8_t MCP2515_Get_Status(MCP2515_HandleTypeDef* hcan);

26
mcp2515_consts.h
View File

@@ -4,6 +4,32 @@
#include <stdint.h>
/* special address description flags for the CAN_ID */
#define CAN_EFF_FLAG 0x80000000UL /* EFF/SFF is set in the MSB */
#define CAN_RTR_FLAG 0x40000000UL /* remote transmission request */
#define CAN_ERR_FLAG 0x20000000UL /* error message frame */
/* valid bits in CAN ID for frame formats */
#define CAN_SFF_MASK 0x000007FFUL /* standard frame format (SFF) */
#define CAN_EFF_MASK 0x1FFFFFFFUL /* extended frame format (EFF) */
#define CAN_ERR_MASK 0x1FFFFFFFUL /* omit EFF, RTR, ERR flags */
/*
* Controller Area Network Identifier structure
*
* bit 0-28 : CAN identifier (11/29 bit)
* bit 29 : error message frame flag (0 = data frame, 1 = error message)
* bit 30 : remote transmission request flag (1 = rtr frame)
* bit 31 : frame format flag (0 = standard 11 bit, 1 = extended 29 bit)
*/
#define CAN_SFF_ID_BITS 11
#define CAN_EFF_ID_BITS 29
/* CAN payload length and DLC definitions according to ISO 11898-1 */
#define CAN_MAX_DLC 8
#define CAN_MAX_DLEN 8
/*
* Speed 8M
*/