STM32驱动MAX31865的问题

只看该作者 · 2016-1-13 13:11

用STM32IO口模拟SPI驱动MAX31865调试了好几天了就是没有调通，有没有大神帮帮忙啊？代码如下：
//===Ð´Êý¾Ý===//
void Send_Write_Byte(u8 Address,u8 Data)
{
u8 i;
  SPI_MAX31865_CS1_LOW();
for(i = 0;i < 8;i++)
{
   SCLK_H;
Delay(1);
      if((Address & 0x80) == 0x80)
      {
         MOSI_H;
      }
      else
      {
         MOSI_L;
      }
      SCLK_L;
      Address <<= 1;
}
for(i = 0;i < 8;i++)
{
      SCLK_H;
      if((Data & 0x80) == 0x80)
      {
         MOSI_H;
      }
      else
      {
         MOSI_L;
      }
   SCLK_L;
      Data <<= 1;
}
SPI_MAX31865_CS1_HIGH();
}
//====================================================================
//===¶ÁÊý¾Ý===//
u8 Send_Read_Byte(u8 Address)
{
u8 i,Temp=0;
SPI_MAX31865_CS1_LOW();
for(i = 0;i < 8;i++)
{
      SCLK_H;
      if((Address & 0x80) == 0x80)
      {
         MOSI_H;
      }
      else
      {
         MOSI_L;
      }
SCLK_L;
      Address <<= 1;
}
for(i = 0;i < 8;i++)
{
      Temp <<= 1;
      SCLK_H;
      if(MISO)
      {
         Temp |= 0x01;
      }
      else
      {
         Temp &= 0xfe;
      }
      SCLK_L;
}
SPI_MAX31865_CS1_HIGH();
return Temp;
}
//====================================================================
//===Í¨µÀ×ª»»===//
void max31865_readwedu(void)
{
u8 Send_Read_Byte(u8 Address);
u8 Low=0;
u8 High=0;

Fault = Send_Read_Byte(0x00);
High = Send_Read_Byte(0x01);
Low  = Send_Read_Byte(0x02);
Temp_Buff = (High << 8) + Low;
Temp_Buff >>= 1;
Fault_H[0] = Send_Read_Byte(0x03);
Fault_H[1] = Send_Read_Byte(0x04);
Fault_L[0] = Send_Read_Byte(0x05);
Fault_L[1] = Send_Read_Byte(0x06);
Error = Send_Read_Byte(0x07);
Temp_Now = (( Temp_Buff / 32) - 256);
}
//max31865初始化
void SPI_max31865_Init(void)
{
  //SPI_InitTypeDef  SPI_InitStructure;
  GPIO_InitTypeDef GPIO_InitStructure;

  /* Enable SPI1 and GPIO clocks */
  /*!< SPI_FLASH_SPI_CS_GPIO, SPI_FLASH_SPI_MOSI_GPIO,
   SPI_FLASH_SPI_MISO_GPIO, SPI_FLASH_SPI_DETECT_GPIO
   and SPI_FLASH_SPI_SCK_GPIO Periph clock enable */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC,ENABLE);

  /*!< SPI_FLASH_SPI Periph clock enable */
  //RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI3, ENABLE);


  /*!< Configure SPI_FLASH_SPI pins: SCK */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3|GPIO_Pin_4;//|GPIO_Pin_5;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  /*!< Configure SPI_FLASH_SPI pins: MISO */
  //GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
  //GPIO_Init(GPIOB, &GPIO_InitStructure);

  /*!< Configure SPI_FLASH_SPI pins: MOSI */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN; //MOSI??????
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  /*!< Configure SPI_FLASH_SPI_CS_PIN pin: SPI_FLASH Card CS pin */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  SPI_MAX31865_CS1_HIGH();
  SPI_MAX31865_CS2_HIGH();

Send_Write_Byte(0x80,0xC1);
}

只看该作者 · 2016-1-13 13:13

#define MOSI_H GPIO_SetBits(GPIOB, GPIO_Pin_5)
#define MOSI_L GPIO_ResetBits(GPIOB, GPIO_Pin_5)
#define SCLK_H GPIO_SetBits(GPIOB, GPIO_Pin_3)
#define SCLK_L GPIO_ResetBits(GPIOB, GPIO_Pin_3)
#define MISO GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_4)
#define SPI_MAX31865_CS1_LOW() GPIO_ResetBits(GPIOA, GPIO_Pin_15)
#define SPI_MAX31865_CS1_HIGH() GPIO_SetBits(GPIOA, GPIO_Pin_15)