MAX5386驱动

只看该作者 · 2023-11-22 14:35

void Write_Spi_9Bit1( uint8_t Bit_A0, uint8_t  DatByte )
{
  uint8_t i;

  DP2_CS = 0;
  DP2_SCK = 0;//SCK 产生下降沿

if( Bit_A0 ) {  DP2_SI = 1;}  //=0: Write Wiper Register A =1:  Write Wiper Register B
else { DP2_SI = 0;  }
delay_us( 5 );

  DP2_SCK = 1;

  for(i =0;i<8; i++)
{
   DP2_SCK = 0;
   DP2_SI = (  DatByte>>(7-i) )&0x01;       //bit7 first
   //delay_us( 2 );
   DP2_SCK = 1;
}

  DP2_CS = 1;
} 数字电位器驱动程序，MAX5386 9位SPI写数据，一直不成功，哪位高手能不能指点下。谢谢了