S9S12G48 CAN 同步问题(已解决)

zjuxxxxxx

我遇到的问题，CAN发送后，缓存区一直满 （CANTFLG = 0），调试过程中发现。发现寄存器CANCTL0在0 和16间跳动。就是CAN总线同步状态不稳定。CAN模块采用PE生成的代码。CW5.1编译。
CAN代码如下，请教，程序哪个方面配置错了？？
初始化代码如下：
void CAN1_Init(void)
{
  /* CANCTL1: CANE=1,CLKSRC=0,LOOPB=0,LISTEN=0,BORM=0,WUPM=0,SLPAK=0,INITAK=0 */
  CANCTL1 = 0x80U;                     /* Set the control register */
  /* CANCTL0: RXFRM=0,RXACT=0,CSWAI=0,SYNCH=0,TIME=0,WUPE=0,SLPRQ=0,INITRQ=1 */
  CANCTL0 = 0x01U;                     /* Set the control register */
  CANIDAC_IDAM = 0x01U;                /* Set the acceptance mode */
  CANIDAR0 = 0x00U;                    /* Set the acceptance code, register CANIDAR0 */
  CANIDAR1 = 0x00U;                    /* Set the acceptance code, register CANIDAR1 */
  CANIDAR2 = 0x00U;                    /* Set the acceptance code, register CANIDAR2 */
  CANIDAR3 = 0x00U;                    /* Set the acceptance code, register CANIDAR3 */
  CANIDAR4 = 0x00U;                    /* Set the acceptance code, register CANIDAR4 */
  CANIDAR5 = 0x00U;                    /* Set the acceptance code, register CANIDAR5 */
  CANIDAR6 = 0x00U;                    /* Set the acceptance code, register CANIDAR6 */
  CANIDAR7 = 0x00U;                    /* Set the acceptance code, register CANIDAR7 */
  CANIDMR0 = 0xFFU;                    /* Set the acceptance mask, register CANIDMR0 */
  CANIDMR1 = 0xFFU;                    /* Set the acceptance mask, register CANIDMR1 */
  CANIDMR2 = 0xFFU;                    /* Set the acceptance mask, register CANIDMR2 */
  CANIDMR3 = 0xFFU;                    /* Set the acceptance mask, register CANIDMR3 */
  CANIDMR4 = 0xFFU;                    /* Set the acceptance mask, register CANIDMR4 */
  CANIDMR5 = 0xFFU;                    /* Set the acceptance mask, register CANIDMR5 */
  CANIDMR6 = 0xFFU;                    /* Set the acceptance mask, register CANIDMR6 */
  CANIDMR7 = 0xFFU;                    /* Set the acceptance mask, register CANIDMR7 */
  /* CANBTR0: SJW1=1,SJW0=1,BRP5=0,BRP4=0,BRP3=0,BRP2=0,BRP1=0,BRP0=0 */
  CANBTR0 = 0xC0U;                     /* Set the device timing register */
  /* CANBTR1: SAMP=1,TSEG22=1,TSEG21=1,TSEG20=1,TSEG13=0,TSEG12=1,TSEG11=1,TSEG10=0 */
  CANBTR1 = 0xF6U;                     /* Set the device timing register */
  CANCTL1_CLKSRC = 0x01U;              /* Select the clock source from bus clock */
  CANCTL0_INITRQ = 0x00U;              /* Start device */
  while(CANCTL1_INITAK) {}             /* Wait for enable */
}

我知道答案 目前已有2人回答

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安

楼主，是否连接了CAN接收器来接收数据？

zjuxxxxxx

CAN收发器已经连接了，TJA1040.

FSL_TICS_ZJJ

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