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CAN CAN NEED

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tuxmonkey
2026-02-24 16:43:57 +08:00
parent c0c7658b39
commit 522d6a4545
2 changed files with 16 additions and 4 deletions
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3
User_Code/bsp/fdcan/bsp_fdcan.c
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@@ -4,6 +4,7 @@
#include "stdlib.h" #include "stdlib.h"
#include "bsp_dwt.h" #include "bsp_dwt.h"
#include "bsp_log.h" #include "bsp_log.h"
//说是fdcan实际上就是配置成了经典的CAN
/* can instance ptrs storage, used for recv callback */ /* can instance ptrs storage, used for recv callback */
// 在CAN产生接收中断会遍历数组,选出hcan和rxid与发生中断的实例相同的那个,调用其回调函数 // 在CAN产生接收中断会遍历数组,选出hcan和rxid与发生中断的实例相同的那个,调用其回调函数
@@ -251,7 +252,7 @@ void CANSetDLC(FDCANInstance *_instance, uint8_t length)
LOGERROR("[bsp_can] CAN DLC error! check your code or wild pointer"); LOGERROR("[bsp_can] CAN DLC error! check your code or wild pointer");
} }
_instance->txconf.DataLength = length; _instance->txconf.DataLength = DLC_LookUp_Table[length];
} }
/* -----------------------belows are callback definitions--------------------------*/ /* -----------------------belows are callback definitions--------------------------*/

17
User_Code/bsp/fdcan/bsp_fdcan.h
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@@ -1,5 +1,5 @@
#ifndef BSP_CAN_H #ifndef BSP_FDCAN_H
#define BSP_CAN_H #define BSP_FDCAN_H
//在此选择CAN类型，两者只能选择一个！！！ //在此选择CAN类型，两者只能选择一个！！！
#define FDCAN //G系列和H7系列使用FDCAN #define FDCAN //G系列和H7系列使用FDCAN
@@ -34,7 +34,18 @@
// 如果只有1个CAN,还需要把bsp_can.c中所有的hcan2变量改为hcan1(别担心,主要是总线和FIFO的负载均衡,不影响功能) // 如果只有1个CAN,还需要把bsp_can.c中所有的hcan2变量改为hcan1(别担心,主要是总线和FIFO的负载均衡,不影响功能)
#endif #endif
// 定义查找表
static const uint32_t DLC_LookUp_Table[9] = {
FDCAN_DLC_BYTES_0,
FDCAN_DLC_BYTES_1,
FDCAN_DLC_BYTES_2,
FDCAN_DLC_BYTES_3,
FDCAN_DLC_BYTES_4,
FDCAN_DLC_BYTES_5,
FDCAN_DLC_BYTES_6,
FDCAN_DLC_BYTES_7,
FDCAN_DLC_BYTES_8
};
/* can instance typedef, every module registered to CAN should have this variable */ /* can instance typedef, every module registered to CAN should have this variable */
#pragma pack(1) #pragma pack(1)