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uiabluqp

用的STM32F072的芯片，在调试CAN程序的时候，用JLINK仿真出来的发送状态永远不是CANTXOK。
: g+ e! o9 R+ U: g$ t5 a) \$ V6 nCAN的寄存器显示为三个邮箱先后为Pending状态，之后就状态一直为无邮箱可用。芯片无法发出信号。求解啊，各位大神，难道是硬件的原因吗
int main(void)
% ]+ S! Y4 s! H; Z+ i- P6 L  e{
        
    CanTxMsg TxMessage,TxMessage1;
  GPIO_InitTypeDef       GPIO_InitStructure;
  CAN_InitTypeDef        CAN_InitStructure;
* f1 \" N1 T7 Y4 o' S  CAN_FilterInitTypeDef  CAN_FilterInitStructure;
    NVIC_InitTypeDef       NVIC_InitStructure;   
8 G0 F7 c2 r: u3 E) Z  //CAN¿úÏà1Øê±Öó
. O  g, d2 h& c0 l* I" E    RCC_AHBPeriphclockCmd(RCC_AHBPeriph_GPIOA,ENABLE); //ê1ÄüGPIOAê±Öó
. `1 Y) g: {; l
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_CAN,ENABLE);//ê1ÄüCAN1ê±Öó   
3 u: e  |; T( i   
    //can1¿úòy½ÅÅäÖÃ
+ I6 @5 S( X' f  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11|GPIO_Pin_12;//3õê¼»ˉ
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;//¸′óÃ1|Äü
9 X( ~% r6 N* @; I, d8 h1 ]    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;    //Ëù¶è
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP; //íÆíì¸′óÃêä3ö
' c# o* m) i( a; N7 C    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL; //éÏà-
( W# ?5 Z, _4 U/ B8 j% t5 c    GPIO_Init(GPIOA,&GPIO_InitStructure);
* t: O* o; i+ C  l, Y        
& s  M$ e; I% s6 k5 n! n# o) ?    GPIO_PinAFConfig(GPIOA,GPIO_PinSource11,GPIO_AF_0);
& N3 o* _- r' \+ r6 ?    GPIO_PinAFConfig(GPIOA,GPIO_PinSource12,GPIO_AF_0);
   
7 o7 }2 `& J7 ^1 j* u5 M5 b- z' W9 L  //CAN1¿úμÄÏà1ØÅäÖà  
    CAN_InitStructure.CAN_TTCM=DISABLE;  
    CAN_InitStructure.CAN_ABOM=ENABLE;
    CAN_InitStructure.CAN_AWUM=DISABLE;
0 |) ?7 h7 W4 E( G0 A: q    CAN_InitStructure.CAN_NART=DISABLE;
9 c9 g' L% ~1 J: K1 U6 n4 X    CAN_InitStructure.CAN_RFLM=DISABLE;
    CAN_InitStructure.CAN_TXFP=ENABLE;
7 _1 t, ?, `- v    CAN_InitStructure.CAN_Mode=CAN_Mode_Normal;
    CAN_InitStructure.CAN_SJW=CAN_SJW_1tq;
    CAN_InitStructure.CAN_BS1=CAN_BS1_10tq;
" c+ H$ z. d0 ], ^' X: ^6 X    CAN_InitStructure.CAN_BS2=CAN_BS2_7tq;
    CAN_InitStructure.CAN_Prescaler=4;
   
% i( p$ q) I& K9 @$ N4 B//    CAN_InitStructure.CAN_Mode = CAN_Mode_LoopBack;           // »Ø»·2aêÔÄ￡ê½
3 s7 s8 S" p- y( {" O
& h+ o2 J/ Y% Z5 o% ~    CAN_Init(CAN,&CAN_InitStructure);
    /* CAN filter init */
  {' X  C( F" W& W    CAN_FilterInitStructure.CAN_FilterNumber=0;      
* S; M2 Y. [# V: ]4 Z0 h    CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;   
    CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;
% _+ C9 L* T' c6 c" v8 o    CAN_FilterInitStructure.CAN_FilterIdHigh=0x0000;
    CAN_FilterInitStructure.CAN_FilterIdLow=0x0000;
& L! a" M3 N7 N& I3 }9 z% D    CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x0000;
: _9 b7 p5 {9 y$ U    CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000;
0 K: d" Y# M( H0 L* K- ^! @7 N    CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_Filter_FIFO0;
    CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;
    CAN_FilterInit(&CAN_FilterInitStructure);
9 z- Z% z" I/ l2 M2 k' ^, j4 j  
/ U; t! A% _/ R  b6 x) C( o         TxMessage.StdId = 0x12;
- `& ]' d; I# _0 ^7 i7 U' a        TxMessage.ExtId = 0x12;
        TxMessage.RTR = CAN_RTR_Data;           //0x00000000;
/ m& s6 {4 B6 l8 N+ r5 O7 O        TxMessage.IDE = CAN_ID_STD;                    //0x00000000;
        TxMessage.DLC = 8;
& s$ [4 @4 H- j- }        TxMessage.Data[0] = 0x01;
        TxMessage.Data[1] = 0x00;
! f% U) @! n5 `3 O3 {7 \        TxMessage.Data[2] = 0x00;
8 s1 L$ H+ W1 P, b" [7 }/ ]        TxMessage.Data[3] = 0x00;
* P5 I$ U# f7 ^3 ?% E8 {        TxMessage.Data[4] = 0x00;
        TxMessage.Data[5] = 0x00;
, F8 u9 {8 d! H% Q        TxMessage.Data[6] = 0x00;
5 b$ k+ H4 E9 N! y8 u4 O' _8 Q' |* u        TxMessage.Data[7] = 0x00;
! o1 L, U; ~, V( C        while (1)
        {
                GPIO_WriteBit(GPIOB,GPIO_Pin_9,(BitAction)(1-GPIO_ReadOutputDataBit(GPIOB,GPIO_Pin_9)));
                ii = 0x3fffff;
                CAN_Transmit(CAN, &TxMessage);
, C6 B0 B2 |- R6 S               while(ii--)；
0 Y8 _- x8 d- @/ T$ ]1 P% {  w               
6 O) M, B9 Q# M) Z        }
4 T" }* _0 |3 b2 n8 n+ P' I' {}

regngfpcb

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yin123

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