【ST学习小组】STM32F103的CAN 通信之从控器部分

fxw451

 接上面的

【ST学习小组】STM32F103的CAN 通信之主控器

 
https://www.eefocus.com/bbs/article_244_380394.html
 
下面是从控器部分代码：
main.c部分代码

/******************** (C) COPYRIGHT *******************************************
* File Name          : main.c
* Author             : MJQ         
* Version            : V1.0
* 环境                                 : mdk423-固件库V3.5版本、
* 芯片                                 : STM32F103VB-ALIENTEK开发板 
* Date               : 2012-04-12
* Description        : 外部中断函数，按key0 led1灭串口发送0xaa、按key1 led2灭串口发送0x55、
                                           接收到电脑发送数据或按PA0时，led1、led2全亮
* 定义                                 :                LED1-------PA8
                                                LED2-------PD2
                                                KEY0-------PA13
                                                KEY1-------PA15       
                                                TXD1-------PA9
                                                RXD1-------PA10
                                                EXTI0------PA0
********************************************************************************/
/*---------------------Includes------------------------------------------------*/
#include "stm32f10x.h" 
#include "misc.h"
#include "led.h"
#include "key.h"
#include "usart.h"
//#include "exti.h"
#include "can.h"
 
void RCC_Configuration(void);  
void Delay(__IO uint32_t nCount);
 
//___________________Global Variable declare________
u8 CAN_TransmitDataBuf[8];
u8 ADC_num=0;
u16 ADC_Data0[10];
u16 ADC_Data1[10];
u16 ADC_Data2[10];
u16 ADC_Data3[10];
 
//______________________________________________
 
 
//___________________________ADC modue__________
 
void  Adc_Init(void)
{    
        //先初始化IO口

         RCC->APB2ENR|=1APB2ENR|=1

fxw451

 CAN。部分代码
 
#include "can.h"
 
u16 ret;
/******************CAN1中断配置函数*********************************************/
//优先级：0
//中断服务程序：USB_LP_CAN1_RX0_IRQn------stm32f10x_it.
void CAN_NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;
 
  /* Enable CAN1 RX0 interrupt IRQ channel */
  NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN1_RX0_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}
/******************CAN1端口配置函数*********************************************/
//引脚：CAN1RX-PA8、CAN1Tx-PB8
//说明：开启端口B的时钟、CAN1的时钟
void CAN_GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
 
  /* Configure CAN pin: RX */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
  GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
  
  /* Configure CAN pin: TX */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
  GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
            /*端口重映射到PB8、PB9上*/
 
 // GPIO_PinRemapConfig(GPIO_Remap2_CAN1, ENABLE);        //配置CAN总线为从映射
 
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE);   /* CAN Periph clock enable */
 
}
 
/******************CAN1查询接受配置函数*****************************************/
//波特率：SJW-1tq、BS1-8tq、BS2-7tq、Prescaler-5;
//
u8 CAN_Polling(void)
{
  CAN_InitTypeDef        CAN_InitStructure;
  CAN_FilterInitTypeDef  CAN_FilterInitStructure;
  CanTxMsg TxMessage;
  CanRxMsg RxMessage;
  uint32_t i = 0;
  uint8_t TransmitMailbox = 0;
 
  /* CAN register init */
  CAN_DeInit(CAN1);
  CAN_StructInit(&CAN_InitStructure);
 
  /* CAN cell init */
  CAN_InitStructure.CAN_TTCM=DISABLE;
  CAN_InitStructure.CAN_ABOM=DISABLE;
  CAN_InitStructure.CAN_AWUM=DISABLE;
  CAN_InitStructure.CAN_NART=DISABLE;
  CAN_InitStructure.CAN_RFLM=DISABLE;
  CAN_InitStructure.CAN_TXFP=DISABLE;
  CAN_InitStructure.CAN_Mode=CAN_Mode_LoopBack;
  CAN_InitStructure.CAN_SJW=CAN_SJW_1tq;
  CAN_InitStructure.CAN_BS1=CAN_BS1_8tq;
  CAN_InitStructure.CAN_BS2=CAN_BS2_7tq;
  CAN_InitStructure.CAN_Prescaler=5;
  CAN_Init(CAN1, &CAN_InitStructure);
 
  /* CAN filter init */
  CAN_FilterInitStructure.CAN_FilterNumber=0;
  CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;
  CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;
  CAN_FilterInitStructure.CAN_FilterIdHigh=0x0000;
  CAN_FilterInitStructure.CAN_FilterIdLow=0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x0000;
  CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000;
  CAN_FilterInitStructure.CAN_FilterFIFOAssignment=0;
  CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;
  CAN_FilterInit(&CAN_FilterInitStructure);
 
  /* transmit */
  TxMessage.StdId=0x11;
  TxMessage.RTR=CAN_RTR_DATA;
  TxMessage.IDE=CAN_ID_STD;
  TxMessage.DLC=2;
  TxMessage.Data[0]=0xAA;
  TxMessage.Data[1]=0xAA;
 
  TransmitMailbox=CAN_Transmit(CAN1, &TxMessage);
  i = 0;
  while((CAN_TransmitStatus(CAN1, TransmitMailbox) != CANTXOK) && (i != 0xFF))
  {
    i++;
  }
 
  i = 0;
  while((CAN_MessagePending(CAN1, CAN_FIFO0) < 1) && (i != 0xFF))
  {
    i++;
  }
 
  /* receive */
  RxMessage.StdId=0x00;
  RxMessage.IDE=CAN_ID_STD;
  RxMessage.DLC=0;
  RxMessage.Data[0]=0x00;
  RxMessage.Data[1]=0x00;
  CAN_Receive(CAN1, CAN_FIFO0, &RxMessage);
 
  if( (RxMessage.StdId!=0x11)|(RxMessage.StdId!=0x12) )
  {
    return 1;  
  }
 
  if (RxMessage.IDE!=CAN_ID_STD)
  {
    return 1;
  }
 
  if (RxMessage.DLC!=2)
  {
    return 1;  
  }
 
  if ((RxMessage.Data[0]

蝶舞娇阳

:L:L
。。。