S32K的flexcan组件can fd使用_s32design studio配置canfd

本文摘要：本文章介绍如何使用NXP官方软件S32KDS中的flexcan组件实现can fd收发

开发平台：S32 Design Studio for ARM Version 2.2

SDK版本：S32_SDK_S32K1xx_RTM_3.0.0

使用芯片：S32K148

组件例程免费下载方式在文末！！！

1. 配置CAN所使用的引脚

2. 添加flexcan组件到工程(使用多个CAN就添加多个)

3. 打开对应的flexcan配置页面

4. 进行配置

5. 时钟配置

6. 配置好参数后点击如下图按钮或选项即可将配置数据更新至代码

7. 在代码中加入CAN FD初始化的代码即可使用CAN FD

#include "main.h"
 
// CAN接收数据结构体
CANDataStruct CANrecMsg1;
// CAN发送数据结构体
CANDataStruct CANsendMsg1;
// 系统
static flexcan_msgbuff_t recvMsg1;
// CAN接收到数据标志
AllCANFlagStruct AllCANFlag;
 
// CAN发送时要使用到的  意为 使能FD 标准帧  64byte 数据帧
flexcan_data_info_t can1_data_std_info = {
  .msg_id_type = FLEXCAN_MSG_ID_STD,
  .data_length = 64U,
 
  .fd_enable = true,
  .fd_padding = 0xCC,
  .enable_brs = false, // 不开启数据域波特率切换
 
  .is_remote = false
};
// can接收发送回调函数
void canRxCallback(uint8_t instance, flexcan_event_type_t eventType,
  	uint32_t buffIdx, flexcan_state_t *flexcanState)
{
	(void)flexcanState;
	(void)buffIdx;
	// Rx完成
  	if(eventType == FLEXCAN_EVENT_RX_COMPLETE) {
  		if(instance == INST_CANCOM1)
  		{
  			// 只有当上次报文被处理后才更新新的报文
  			if(!AllCANFlag.CANRecData_flag1) {
  				CANrecMsg1.CAN_ID = recvMsg1.msgId;
  				memcpy(CANrecMsg1.CAN_DATA, recvMsg1.data, 64);
  				AllCANFlag.CANRecData_flag1 = 1;
#ifdef DEBUG_printf
  				SEGGER_RTT_printf(0,"CAN0 received ID:0x%x DATA:", CANrecMsg1.CAN_ID);
  				for(uint8_t i = 0; i < 64; i++)	SEGGER_RTT_printf(0,"0x%02x ", CANrecMsg1.CAN_DATA[i]);
  				SEGGER_RTT_printf(0,"\n");
#endif
  			}
  			FLEXCAN_DRV_Receive(INST_CANCOM1, 0, &recvMsg1); // 接收成功后再配置接收 实现不间断接收
  		}
  	}
}
// can发送
void set_CANTransmitData(CANDataStruct *CANStruct, uint8_t MAILBOX)
{
	while(FLEXCAN_DRV_Send(INST_CANCOM1, MAILBOX, &can1_data_std_info, CANStruct->CAN_ID, CANStruct->CAN_DATA) == STATUS_BUSY);
}
// CAN初始化
void CAN1_Init(void)
{
	FLEXCAN_DRV_Init(INST_CANCOM1, &canCom1_State, &canCom1_InitConfig0);
	FLEXCAN_DRV_SetRxMbGlobalMask(INST_CANCOM1, FLEXCAN_MSG_ID_STD, 0); // 使用MB0接收
	FLEXCAN_DRV_InstallEventCallback(INST_CANCOM1, canRxCallback, NULL);
	FLEXCAN_DRV_ConfigRxMb(INST_CANCOM1, 0, &can1_data_std_info, 0); // 0不过滤ID  !0为接收到的ID
	FLEXCAN_DRV_Receive(INST_CANCOM1, 0, &recvMsg1); // 配置接收
#ifdef DEBUG_printf
	SEGGER_RTT_printf(0,"CAN0 init success\n");
#endif
}

8. 发送和接收示例如下

/**
  * @brief  系统初始化
  * @param  None
  * @retval None
  */
void SYSTEM_Init(void)
{
	CLOCK_SYS_Init(g_clockManConfigsArr, CLOCK_MANAGER_CONFIG_CNT, g_clockManCallbacksArr, CLOCK_MANAGER_CALLBACK_CNT);
	CLOCK_SYS_UpdateConfiguration(0U, CLOCK_MANAGER_POLICY_AGREEMENT);
 
	POWER_SYS_Init(&powerConfigsArr, POWER_MANAGER_CONFIG_CNT, &powerStaticCallbacksConfigsArr, POWER_MANAGER_CALLBACK_CNT);
 
	PINS_DRV_Init(NUM_OF_CONFIGURED_PINS, g_pin_mux_InitConfigArr);
 
	CAN1_Init();
	lptmr_Init();
 
	CANsendMsg1.CAN_ID = 0x777;
	for(uint8_t count = 0; count < 64; count++)
	{
		CANsendMsg1.CAN_DATA[count] = count;
	}
}
/**
  * @brief  任务处理
  * @param  None
  * @retval None
  */
void TASK_Schedule(void)
{
	// 周期发送
	if(TIM_1s_flag)
	{
	set_CANTransmitData(&CANsendMsg1, MAILBOX_6);
	TIM_1s_flag = 0;
#ifdef DEBUG_printf
	SEGGER_RTT_printf(0,"send success\n");
#endif
	}
	// 收到数据回显
	if(AllCANFlag.CANRecData_flag1)
	{
		set_CANTransmitData(&CANrecMsg1, MAILBOX_6);
		AllCANFlag.CANRecData_flag1 = 0;
#ifdef DEBUG_printf
	SEGGER_RTT_printf(0,"return success\n");
#endif
	}
}

组件例程下载地址：

https://download.csdn.net/download/m0_50669075/85423212

S32K148更多例程和源码以及最新内容下载地址：

nxp_s32k148_template: 使用NXP的S32KDS软件基于S32_SDK_S32K1xx_RTM_3.0.0编写的的S32K148各组件测试例程，亲测可用，带有注释，适用于S32K14X系列的芯片。 (gitee.com)

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