sani7/STM32HAL-MCP2515
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Add pin control and interrupt

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This commit is contained in:
Sander Speetjens
2025-02-24 08:17:30 +01:00
parent 954a86ab7e
commit c12cfe2f64
3 changed files with 41 additions and 14 deletions
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42
mcp2515.c
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@@ -251,20 +251,42 @@ CAN_Error MCP2515_Reset(MCP2515_HandleTypeDef* hcan) {
return ERROR_OK;
}
CAN_Error MCP2515_Set_Listen_Only_Mode(MCP2515_HandleTypeDef* hcan) {
return MCP2515_Set_Mode(hcan, CANCTRL_REQOP_LISTENONLY);
CAN_Error MCP2515_Set_Mode(MCP2515_HandleTypeDef* hcan, MCP2515_Mode_t mode) {
switch (mode) {
case MODE_LISTEN_ONLY:
return MCP2515_Set_Mode(hcan, CANCTRL_REQOP_LISTENONLY);
break;
case MODE_LOOPBACK:
return MCP2515_Set_Mode(hcan, CANCTRL_REQOP_LOOPBACK);
break;
case MODE_SLEEP:
return MCP2515_Set_Mode(hcan, CANCTRL_REQOP_SLEEP);
break;
case MODE_NORMAL:
return MCP2515_Set_Mode(hcan, CANCTRL_REQOP_NORMAL);
break;
default:
return MCP2515_Set_Mode(hcan, CANCTRL_REQOP_NORMAL);
break;
}
}
CAN_Error MCP2515_Set_Sleep_Mode(MCP2515_HandleTypeDef* hcan) {
return MCP2515_Set_Mode(hcan, CANCTRL_REQOP_SLEEP);
CAN_Error MCP2515_Set_Pin_Control(MCP2515_HandleTypeDef* hcan, bool B1BFS, bool B0BFS, bool B1BFE, bool B0BFE, bool B1BFM, bool B0BFM) {
CAN_Error error = MCP2515_Set_Config_Mode(hcan);
if (error != ERROR_OK) {
return error;
}
MCP2515_Set_Register(hcan, MCP_BFPCTRL, (B1BFS << 5) | (B0BFS << 4) | (B1BFE << 3) | (B0BFE << 2) | (B1BFM << 1) | B0BFM);
return ERROR_OK;
}
CAN_Error MCP2515_Set_Loopback_Mode(MCP2515_HandleTypeDef* hcan) {
return MCP2515_Set_Mode(hcan, CANCTRL_REQOP_LOOPBACK);
}
CAN_Error MCP2515_Set_Normal_Mode(MCP2515_HandleTypeDef* hcan) {
return MCP2515_Set_Mode(hcan, CANCTRL_REQOP_NORMAL);
CAN_Error MCP2515_Set_Interrupt(MCP2515_HandleTypeDef* hcan, bool MERRIE, bool WAKIE, bool ERRIE, bool TX2IE, bool TX1IE, bool TX0IE, bool RX1IE, bool RX0IE) {
CAN_Error error = MCP2515_Set_Config_Mode(hcan);
if (error != ERROR_OK) {
return error;
}
MCP2515_Set_Register(hcan, MCP_CANINTE, (MERRIE << 7) | (WAKIE << 6) | (ERRIE << 5) | (TX2IE << 4) | (TX1IE << 3) | (TX0IE << 2) | (RX1IE << 1) | RX0IE);
return ERROR_OK;
}
CAN_Error MCP2515_Set_Bitrate_Clock(MCP2515_HandleTypeDef* hcan, CAN_SPEED canSpeed, CAN_CLOCK canClock) {

12
mcp2515.h
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@@ -50,6 +50,13 @@ typedef enum { TXB0 = 0, TXB1 = 1, TXB2 = 2 } TXBn;
typedef enum { RXB0 = 0, RXB1 = 1 } RXBn;
typedef enum {
MODE_LISTEN_ONLY,
MODE_SLEEP,
MODE_LOOPBACK,
MODE_NORMAL
} MCP2515_Mode_t;
typedef struct {
SPI_HandleTypeDef* hspi;
GPIO_TypeDef* cs_port;
@@ -66,10 +73,7 @@ void MCP2515_Init(MCP2515_HandleTypeDef* hcan, SPI_HandleTypeDef* hspi, GPIO_Typ
CAN_Error MCP2515_Reset(MCP2515_HandleTypeDef* hcan);
uint8_t MCP2515_Get_Status(MCP2515_HandleTypeDef* hcan);
CAN_Error MCP2515_Set_Listen_Only_Mode(MCP2515_HandleTypeDef* hcan);
CAN_Error MCP2515_Set_Sleep_Mode(MCP2515_HandleTypeDef* hcan);
CAN_Error MCP2515_Set_Loopback_Mode(MCP2515_HandleTypeDef* hcan);
CAN_Error MCP2515_Set_Normal_Mode(MCP2515_HandleTypeDef* hcan);
CAN_Error MCP2515_Set_Mode(MCP2515_HandleTypeDef* hcan, MCP2515_Mode_t mode);
CAN_Error MCP2515_Set_Bitrate_Clock(MCP2515_HandleTypeDef* hcan, CAN_SPEED canSpeed, CAN_CLOCK canClock);

1
mcp2515_consts.h
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@@ -209,6 +209,7 @@ typedef enum {
MCP_RXF2SIDL = 0x09,
MCP_RXF2EID8 = 0x0A,
MCP_RXF2EID0 = 0x0B,
MCP_BFPCTRL = 0x0C,
MCP_CANSTAT = 0x0E,
MCP_CANCTRL = 0x0F,
MCP_RXF3SIDH = 0x10,