I have 2 nodes, A and B, they set filters for both, now A is sending data frame, B can receive the data from A. but A originally can receive data from B, but after around 1-3 mins the receiving data mainly from itself, minorly from B. but if i reset the board, node A will receive B's data for a while then change to the status:(majority its own data, nimority B's data).
#include "can_config.h"
#include "usart.h"
uint32_t mask_id = 0x03;
uint16_t CAN_ID;
uint8_t CAN_DATA0,CAN_DATA1,CAN_DATA2,CAN_DATA3,CAN_DATA4,CAN_DATA5,CAN_DATA6,CAN_DATA7;
uint8_t CanFlag; //,Display
void CAN_Configuration(void)
{
CAN_InitTypeDef CAN_InitStructure; // CAN mode struct
CAN_FilterInitTypeDef CAN_FilterInitStructure; // CAN filter struct
RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN1, ENABLE); // enable can1 clock.
NVIC_Configuration();
GPIO_Configuration(); // configure the can IO
/* CAN register init */
CAN_DeInit(CAN1);
CAN_StructInit(&CAN_InitStructure);
/* CAN cell init */
CAN_InitStructure.CAN_TTCM = DISABLE; /* ʱ¼ä´¥·¢½ûÖ¹, ʱ¼ä´¥·¢£ºCANÓ²¼þµÄÄÚ²¿¶¨Ê±Æ÷±»¼¤»î£¬²¢ÇÒ±»ÓÃÓÚ²úÉúʱ¼ä´�? */
CAN_InitStructure.CAN_ABOM = ENABLE; /* ×Ô¶¯Àë�?ß½ûÖ¹£¬×Ô¶¯Àë�?ߣºÒ»µ©Ó²¼þ¼à¿Øµ½128´Î11¸öÒþ�?Ô룬¾�?×Ô¶¯�?˳öÀë�?ß״̬¡£ÔÚÕâÀïÒªÈí¼þÉ趨ºó²ÅÄÜ�?˳ö */
CAN_InitStructure.CAN_AWUM = ENABLE; /* ×Ô¶¯»½�?ѽûÖ¹£¬Ó�?±¨ÎÄÀ´µÄʱºò×Ô¶¯�?˳ö�?�?Ãß */
CAN_InitStructure.CAN_NART = DISABLE; /* ±¨ÎÄÖØ´«, Èç¹û´íÎóÒ»Ö±´«µ½³É¹¦Ö¹£¬·ñÔòÖ»´«Ò»´Î */
CAN_InitStructure.CAN_RFLM = DISABLE; /* receive FIFO lock, 1-- after locking, newly coming data will be ignored.0--½ÓÊÕµ½�?µı¨ÎÄÔò¸²¸ÇÇ°Ò»±¨ÎÄ */
CAN_InitStructure.CAN_TXFP = DISABLE; /* FIFO priority, 0 means decide by identifier, 1 means decided by request sequence */
//CAN_InitStructure.CAN_Mode = CAN_Mode_LoopBack; /*better for testing. when 2 boards communication, then it is mode_normal */
CAN_InitStructure.CAN_Mode = CAN_Mode_Normal; /* ģʽ */
//CAN_InitStructure.CAN_Mode = CAN_Mode_Silent ;
CAN_InitStructure.CAN_SJW = CAN_SJW_1tq; /* ÖØ�?Â�?¬²½Ìø¿í£¬Ö»Ó�?canÓ²¼þ´¦ÓÚ³õʼ»¯Ä£Ê½Ê±²ÅÄÜ·ÃÎÊÕâ¸ö¼Ä´æÆ÷ */
CAN_InitStructure.CAN_BS1 = CAN_BS1_5tq; /* ʱ¼ä¶Î1 */
CAN_InitStructure.CAN_BS2 = CAN_BS2_6tq; /* ʱ¼ä¶Î2 */
CAN_InitStructure.CAN_Prescaler = 7; /* ²¨ÌØÂÊÔ¤·ÖƵÊý */
/* ²¨ÌØÂʼÆËã·½·¨ */
/* CANbps= Fpclk/((BRP+1)*((Tseg1+1)+(Tseg2+1)+1) ´Ë´¦¼ÆËãΪ CANbps=36000000/(45*(4+3+1))=100kHz */ //´Ë´¦Tseg1+1 = CAN_BS1_8tp
/* ÅäÖôó·½�?ò: Tseg1>=Tseg2 Tseg2>=tq; Tseg2>=2TSJW */
// **** configure
CAN_Init(CAN1,&CAN_InitStructure);
if (CAN_Init(CAN1,&CAN_InitStructure) == CANINITFAILED)
{
/* ³õʼ»¯Ê±�?ÈÉèÖÃCAN_MCRµÄ³õʼ»¯Î» */
/* È»ºó²é¿´Ó²¼þÊÇ·ñÕæµÄÉèÖÃ�?ËCAN_MSRµÄ³õʼ»¯Î»À´È·È�?ÊÇ·ñ½øÈë�?˳õʼ»¯Ä£Ê½ */
}
CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;
CAN_FilterInitStructure.CAN_FilterFIFOAssignment=0; /* Äܹ»�?¨¹ý¸Ã¹ýÂËÆ÷µÄ±¨ÎÄ´æµ½fifo0Ö�? */
CAN_FilterInitStructure.CAN_FilterNumber=0; /* ¹ýÂËÆ÷0 */
CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask; /* can be IDlist,IDmask, the mask is relatively complex*/
CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit; /* 32λ */
CAN_FilterInitStructure.CAN_FilterIdHigh= ((((u32)0x2616>16; //ҪɸѡµÄID¸ßλ
CAN_FilterInitStructure.CAN_FilterIdLow= (((u32)0x2616
