片子是MC9S12DP256B，收发器是MC33388，现在就是想发送消息，然后在上位机接收。
16M晶振做时钟源，波特率是125K，下面是程序：
void CANInit(void) {
CAN0CTL0 = 0x01; /* 进入初始化模式
while (!(CAN0CTL1&0x01)){}; /* 等待初始化模式确认
CAN0CTL1 = 0x80; /* 使能MSCAN模块
CAN0BTR0 = 0xC7;
CAN0BTR1 = 0x3A;
CAN0IDAC = 0x10;
CAN0CTL0 = 0x00; /* Exit Initialization Mode Request */
while ((CAN0CTL1&0x01) != 0){}; /* Wait for Normal Mode */
}
void CAN_Transmit(void)
{
CAN0TBSEL= 0x01;
CAN0TXIDR0 = 0x00;
CAN0TXIDR1 = 0x08; //扩展桢
CAN0TXIDR2 = 0x00;
CAN0TXIDR3 = 0x04; //发送ID=2
CAN0TXDSR0 = 200;
CAN0TXDSR1 = 212;
CAN0TXDSR2 = 111;
CAN0TXDSR3 = 23;
CAN0TXDSR4 = 89;
CAN0TXDSR5 = 155;
CAN0TXDSR6 = 199;
CAN0TXDSR7 = 0;
CAN0TXDLR = 0x08;
CAN0TXTBPR = 0x00;
CAN0TFLG = 0x01;
}
#pragma CODE_SEG DEFAULT
void main () {
CANInit();
for (;;) {
CAN_Transmit();
}
}
运行后，测到的波形不正确。请各位指点指点 | 
