stm32f105例程 CAN500K USART_LED

ID:397541 · 發(fā)表于 2018-9-28 09:38

stm32f105例程

單片機(jī)源程序如下:

/*
CAN1
USART1
CAN波特率、收發(fā)器配置見CAN.h
stm32f10x.h中修改了外部晶振值8MHz
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f10x.h"
#include "stm32f10x_rcc.h"
#include "stm32f10x_flash.h"
#include "stm32f10x_can.h"
#include "usart.h"
#include "CAN.h"
#include <stdio.h>
void RCC_Configuration(void);
void LED_Config(void);
void Delay(__IO uint32_t nCount);
CanTxMsg TxMsg1={0xAB,0,CAN_ID_STD,CAN_RTR_DATA,8,{0xAB,0,0,0,0,0,0,0}};
CanTxMsg TxMsg2={0xCD,0,CAN_ID_STD,CAN_RTR_DATA,8,{0xCD,0,0,0,0,0,0,0}};
int main(void)
{
/* System Clocks Configuration **********************************************/
RCC_Configuration();
LED_Config();
// 串口配置
USART_Configuration();
USART_STR(USART2,"++++++++++++++++++++++++\r\n");
USART_STR(USART2," CAN Study Board\r\n");
USART_STR(USART2,"++++++++++++++++++++++++\r\n");
// CAN1 配置
CAN1_Config(SET_CAN_SJW,SET_CAN_BS1,SET_CAN_BS2,SET_CAN_PRES);
Delay(2000);
// CAN2 配置
CAN2_Config(SET_CAN_SJW,SET_CAN_BS1,SET_CAN_BS2,SET_CAN_PRES);
while (1)
{
GPIO_ResetBits(GPIOC,GPIO_Pin_0);
GPIO_SetBits(GPIOC,GPIO_Pin_1);
GPIO_SetBits(GPIOC,GPIO_Pin_14);
GPIO_SetBits(GPIOC,GPIO_Pin_15);
Delay(5000);
Delay(5000);
GPIO_SetBits(GPIOC,GPIO_Pin_0);
GPIO_ResetBits(GPIOC,GPIO_Pin_1);
GPIO_SetBits(GPIOC,GPIO_Pin_14);
GPIO_SetBits(GPIOC,GPIO_Pin_15);
CAN_SendData(CAN1,&TxMsg1);
Delay(5000);
Delay(5000);
GPIO_SetBits(GPIOC,GPIO_Pin_0);
GPIO_SetBits(GPIOC,GPIO_Pin_1);
GPIO_ResetBits(GPIOC,GPIO_Pin_14);
GPIO_SetBits(GPIOC,GPIO_Pin_15);
Delay(5000);
Delay(5000);
GPIO_SetBits(GPIOC,GPIO_Pin_0);
GPIO_SetBits(GPIOC,GPIO_Pin_1);
GPIO_SetBits(GPIOC,GPIO_Pin_14);
GPIO_ResetBits(GPIOC,GPIO_Pin_15);
Delay(5000);
Delay(5000);
CAN_SendData(CAN2,&TxMsg2);
}
}
void RCC_Configuration(void)
{
/* Setup the microcontroller system. Initialize the Embedded Flash Interface,
initialize the PLL and update the SystemFrequency variable. */
SystemInit();
}
void Delay(__IO uint32_t nCount)
{
uint8_t x;
for(; nCount != 0; nCount--)
for(x=0;x<100;x++);
}
void LED_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_14|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
}
#ifdef USE_FULL_ASSERT
/**
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
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ID:418101 · 發(fā)表于 2018-10-31 12:15

樓主你好，我用你的代碼，測試105r8 CAN時(shí)，發(fā)現(xiàn)發(fā)送的時(shí)候還是發(fā)不出去，在tx pin看不到波形，一直是高電平，打印transmit的返回值，發(fā)現(xiàn)mailbox值一直從1 2 3 4 4 4 后面就一直是4了，也就是從未發(fā)出去，樓主測試過嗎？