STM32F103CB CAN Problem

void CANInit(char bRefresh)

{

  if (!bRefresh)

  {

    CAN_DeInit();

  }

  RCC_AHBPeriphClockCmd(RCC_APB1Periph_CAN, ENABLE);

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD | RCC_APB2Periph_AFIO, ENABLE);

//  GPIO_PinRemapConfig(GPIO_Remap_PD01, ENABLE);

  GPIO_PinRemapConfig(GPIO_Remap2_CAN, ENABLE);

  GPIO_InitTypeDef GPIO_InitStructure;

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;

  GPIO_Init(GPIOD, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_Init(GPIOD, &GPIO_InitStructure);

  CAN_InitTypeDef CAN_InitStructure;

  CAN_FilterInitTypeDef  CAN_FilterInitStructure;

  /* CAN register init */

  CAN_StructInit(&CAN_InitStructure);

  /* CAN cell init */

  CAN_InitStructure.CAN_TTCM = DISABLE;

  CAN_InitStructure.CAN_ABOM = DISABLE;

  CAN_InitStructure.CAN_AWUM = DISABLE;

  CAN_InitStructure.CAN_NART = DISABLE;

  CAN_InitStructure.CAN_RFLM = DISABLE;

  CAN_InitStructure.CAN_TXFP = DISABLE;

  CAN_InitStructure.CAN_Mode = CAN_Mode_Normal; // CAN_Mode_LoopBack CAN_Mode_Normal

  CAN_InitStructure.CAN_SJW = CAN_SJW_1tq; // 10 Teileinheiten = 20KBaud @200KHz

  CAN_InitStructure.CAN_BS1 = CAN_BS1_5tq;

  CAN_InitStructure.CAN_BS2 = CAN_BS2_4tq;

  CAN_InitStructure.CAN_Prescaler = 40; // Einstellung 8MHz/40 >> 200KHz

  CAN_Init(&CAN_InitStructure);

  /* CAN filter init */

  CAN_FilterInitStructure.CAN_FilterNumber=1;

  CAN_FilterInitStructure.CAN_FilterMode=CAN_FilterMode_IdMask;

  CAN_FilterInitStructure.CAN_FilterScale=CAN_FilterScale_32bit;

  CAN_FilterInitStructure.CAN_FilterIdHigh=0x0000;

  CAN_FilterInitStructure.CAN_FilterIdLow=0x0000;

  CAN_FilterInitStructure.CAN_FilterMaskIdHigh=0x0000;

  CAN_FilterInitStructure.CAN_FilterMaskIdLow=0x0000;

  CAN_FilterInitStructure.CAN_FilterFIFOAssignment=CAN_FIFO0;

  CAN_FilterInitStructure.CAN_FilterActivation=ENABLE;

  CAN_FilterInit(&CAN_FilterInitStructure);

  /* Enable CAN RX0 interrupt IRQ channel */

  NVIC_InitTypeDef NVIC_InitSt;

  NVIC_InitSt.NVIC_IRQChannel = USB_LP_CAN_RX0_IRQChannel;

  NVIC_InitSt.NVIC_IRQChannelPreemptionPriority = 0;

  NVIC_InitSt.NVIC_IRQChannelSubPriority = 0;

  NVIC_InitSt.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init(&NVIC_InitSt);

  /* CAN FIFO0 message pending interrupt enable */

  CAN_ITConfig(CAN_IT_FMP0, ENABLE);

  // Test

  CanTxMsg msg;

  msg.ExtId = 0x12345;

  msg.IDE = CAN_ID_EXT;

  msg.RTR = CAN_RTR_DATA;

  msg.DLC = 4;

  msg.Data[0] = 1;

  msg.Data[2] = 5;

  msg.Data[3] = 8;

  msg.Data[4] = 0;

  CAN_Transmit(&msg);

}