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Visitor II
June 11, 2019
Question

How to configurate be CAN module on stm8s208c6

  • June 11, 2019
  • 0 replies
  • 694 views

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);

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