求助各位高手,STM32F107RC的CAN不能发送数据
求助各位高手,STM32F107RC的CAN不能发送数据，我用的振晶是8M的，CAN1发送是第A端口11脚，接收是A端口12脚，现在我没有发现错误，就是不能发送回来，求求各看看是什么原因，/**
******************************************************************************
* @file CAN/DualCAN/main.c
* @authorMCD Application Team
* @version V3.5.0
* @date 08-April-2011
* @brief Main program body
******************************************************************************
* @attention
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* © COPYRIGHT 2011 STMicroelectronics
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include"sys_cfg.h"
#include "stm32f10x.h"
//nclude "platform_config.h"
#define Key_Pressed 0x01
#define Key_NoPressed 0x00
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
CAN_InitTypeDef CAN_InitStructure;
CAN_FilterInitTypeDefCAN_FilterInitStructure;
RCC_ClocksTypeDefRCC_Clocks;
CanTxMsg TxMessage;
uint8_t Key_Pressed_Number = 0x0;
/* Private function prototypes -----------------------------------------------*/
void RCC_Configuration(void);
void GPIO_Configuration(void);
void NVIC_Configuration(void);
void CAN_Config(void);
void LED_Display(uint8_t Ledstatus);
void Init_RxMes(CanRxMsg *RxMessage);
void Delay(void);
/* Private functions ---------------------------------------------------------*/
/**
* @briefMain program.
* @paramNone
* @retval None
*/
int main(void)
{
/* Setup STM32 system (clock, PLL and Flash configuration) */
SystemInit();
/* System clocks configuration ---------------------------------------------*/
RCC_Configuration();
/* GPIO configuration ------------------------------------------------------*/
GPIO_Configuration();
/* NVIC configuration ------------------------------------------------------*/
NVIC_Configuration();
RCC_GetClocksFreq(&RCC_Clocks);
/* CAN configuration */
CAN_Config();
CAN_ITConfig(CAN1, CAN_IT_FMP0, ENABLE);
/* Infinite loop */
while(1)
{
TxMessage.Data =0;
CAN_Transmit(CAN1, &TxMessage);
}
}
/**
* @briefConfigures the different system clocks.
* @paramNone
* @retval None
*/
void RCC_Configuration(void)
{
/* GPIO clock enable */
//RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO | RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOB, ENABLE);
// RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO |RCC_APB1Periph_CAN1, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1 | RCC_APB1Periph_CAN2, ENABLE);
/* CAN1 Periph clock enable */
GPIO_PinRemapConfig(GPIO_Remap2_CAN1 , ENABLE);
GPIO_PinRemapConfig(GPIO_Remap_CAN2, ENABLE);
}
/**
* @briefConfigures the GPIO.
* @paramNone
* @retval None
*/
void GPIO_Configuration(void)
{
GPIO_InitTypeDefGPIO_InitStructure;
/* Configure CAN pin: RX */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure CAN pin: RX */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* Configure CAN pin: TX */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
//GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
// GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_PinRemapConfig(GPIO_Remap2_CAN1 , ENABLE);
}
/**
* @briefConfigures the NVIC for CAN.
* @paramNone
* @retval None
*/
void NVIC_Configuration(void)
{
NVIC_InitTypeDefNVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
NVIC_InitStructure.NVIC_IRQChannel =CAN1_RX0_IRQn;//中断函数
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x00;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel =CAN2_RX0_IRQn;//发送中断函数
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x00;
// NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
/**
* @briefConfigures the CAN.
* @paramNone
* @retval None
*/
void CAN_Config(void)
{
/* 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_Normal;
//CAN_InitStructure.CAN_Mode = CAN_Mode_LoopBack;
CAN_InitStructure.CAN_SJW = CAN_SJW_1tq;
CAN_InitStructure.CAN_BS1 = CAN_BS1_3tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 4;//2
CAN_Init(CAN1, &CAN_InitStructure);
/* CAN filter init */
CAN_FilterInitStructure.CAN_FilterNumber=14;
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 = 0x321;
TxMessage.ExtId = 0x01;
TxMessage.RTR = CAN_RTR_DATA;
TxMessage.IDE = CAN_ID_STD;
TxMessage.DLC = 1;
}
/**
* @briefDelay
* @paramNone
* @retval None
*/
void Delay()
{
uint16_t nTime = 0x0000;
for(nTime =0; nTime StdId = 0x00;
RxMessage->ExtId = 0x00;
RxMessage->IDE = CAN_ID_STD;
RxMessage->DLC = 0;
RxMessage->FMI = 0;
for (i = 0;i < 8;i++)
RxMessage->Data = 0x00;
}
#ifdefUSE_FULL_ASSERT
/**
* @briefReports the name of the source file and the source line number
* where the assert_param error has occurred.
* @paramfile: pointer to the source file name
* @paramline: assert_param error line source number
* @retval None
*/
void assert_failed(uint8_t* file, uint32_t line)
{
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
/**
* @}
*/
/**
* @}
*/
/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
回复:求助各位高手,STM32F107RC的CAN不能发送数据
现在我没有发现错误，就是不能发送数据，求求各看看是什么原因，/**
回复:求助各位高手,STM32F107RC的CAN不能发送数据
各位看看是什么原因啊，每次都是这些问题，真不知道怎样查啊，RE:求助各位高手,STM32F107RC的CAN不能发送数据
请检查频率设置的是否匹配。CAN_InitStructure.CAN_SJW = CAN_SJW_1tq;
CAN_InitStructure.CAN_BS1 = CAN_BS1_3tq;
CAN_InitStructure.CAN_BS2 = CAN_BS2_5tq;
CAN_InitStructure.CAN_Prescaler = 4;//2
CAN_Init(CAN1, &CAN_InitStructure);
RE:求助各位高手,STM32F107RC的CAN不能发送数据
那肯定是配置的问题。
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