cancel
Showing results for 
Search instead for 
Did you mean: 

How to configurate be CAN module on stm8s208c6

IKARA.15
Associate II

Hello guys, last one week i've been trying to communicate between my mcu and a canbus generator. I couldnt receive that transmitted 8byte codes by my canbus generator. Here are my

codes about it. Can anyone help me to understand this ?

#include "main.h"
uint8_t alinan_deger; // the value taken from DATA
void main(void)
{
  GPIO_Init (GPIOD, (GPIO_Pin_TypeDef)GPIO_PIN_2, GPIO_MODE_OUT_OD_LOW_FAST);
  CAN_TxStatus_TypeDef status ;
  CAN_Id_TypeDef Tx_IDE = CAN_Id_Standard;
  CAN_RTR_TypeDef Tx_RTR = CAN_RTR_Data;
  uint8_t Tx_DLC = 0;
  uint32_t Tx_Id = 0;
  uint8_t Tx_Data[8] = {0};
  
    enableInterrupts();
 while(1)
 {
 
    /* Transmit Parameters*/
      Tx_Id = 0x222;
      Tx_IDE = CAN_Id_Standard;
      Tx_RTR = CAN_RTR_Data;
      Tx_DLC = 1;
      Tx_Data[0] = alinan_deger;
      
      /* Sender send Frame */
      status = CAN_Transmit(Tx_Id,Tx_IDE,Tx_RTR,Tx_DLC,Tx_Data);
      if(alinan_deger==0x11)
      {
      GPIO_WriteHigh( GPIOD, GPIO_PIN_2 );
      }
      else 
       GPIO_WriteHigh (GPIOD, GPIO_PIN_3);
    
 }
}
void CLK_Config(void)
{
  /* Initialization of the clock */
  /* Clock divider to HSI/8 */
  CLK_HSIPrescalerConfig(CLK_PRESCALER_HSIDIV8);//2Mhz
}
void CAN_Config(void)
{
 
 
 CAN_InitStatus_TypeDef status = CAN_InitStatus_Failed;
  
  /* Filter Parameters */
  CAN_FilterNumber_TypeDef CAN_FilterNumber;
  FunctionalState CAN_FilterActivation;
  CAN_FilterMode_TypeDef CAN_FilterMode;
  CAN_FilterScale_TypeDef CAN_FilterScale;
   uint8_t CAN_FilterID1;
  uint8_t CAN_FilterID2;
  uint8_t CAN_FilterID3;
  uint8_t CAN_FilterID4;
  uint8_t CAN_FilterIDMask1;
  uint8_t CAN_FilterIDMask2;
  uint8_t CAN_FilterIDMask3;
  uint8_t CAN_FilterIDMask4; 
   /* Init Parameters*/
  CAN_MasterCtrl_TypeDef CAN_MasterCtrl;
  CAN_Mode_TypeDef CAN_Mode;
  CAN_SynJumpWidth_TypeDef CAN_SynJumpWidth;
  CAN_BitSeg1_TypeDef CAN_BitSeg1;
  CAN_BitSeg2_TypeDef CAN_BitSeg2;
  uint8_t CAN_Prescaler;  
   /* CAN register init */
  CAN_DeInit();
    
  /* CAN  init */
  CAN_MasterCtrl=CAN_MasterCtrl_AllEnabled;
  CAN_Mode = CAN_Mode_Normal;
  CAN_SynJumpWidth = CAN_SynJumpWidth_1TimeQuantum;
  CAN_BitSeg1 = CAN_BitSeg1_3TimeQuantum;
  CAN_BitSeg2 = CAN_BitSeg2_2TimeQuantum;
  CAN_Prescaler = 1; //Tq=(1+1)*0.5*10-6 =1us
  status = CAN_Init(CAN_MasterCtrl, CAN_Mode, CAN_SynJumpWidth, CAN_BitSeg1, CAN_BitSeg2, CAN_Prescaler); /* CAN filter init */ 
  CAN_FilterNumber = CAN_FilterNumber_0;
  CAN_FilterActivation = ENABLE;
  CAN_FilterMode = CAN_FilterMode_IdMask;
  CAN_FilterScale = CAN_FilterScale_32Bit;
  CAN_FilterID1=0;  
  CAN_FilterID2=0;
  CAN_FilterID3=0;
  CAN_FilterID4=0;
  CAN_FilterIDMask1=0;
  CAN_FilterIDMask2=0;
  CAN_FilterIDMask3=0;
  CAN_FilterIDMask4=0; 
 
CAN_FilterInit(CAN_FilterNumber, CAN_FilterActivation, CAN_FilterMode, 
                 CAN_FilterScale,CAN_FilterID1, CAN_FilterID2, CAN_FilterID3,
                 CAN_FilterID4,CAN_FilterIDMask1, CAN_FilterIDMask2, 
                 CAN_FilterIDMask3, CAN_FilterIDMask4);
  CAN_ITConfig(CAN_IT_FMP, ENABLE);
 
}
void Delay (uint16_t nCount)
{
  /* Decrement nCount value */
  for (; nCount != 0; nCount--);
}
 
#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
  * @param line: 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
CAN_Receive();
   alinan_deger = CAN_GetReceivedData(0);

0 REPLIES 0