询问STM8L驱动24位ADTM7707初始化通讯问题

只看该作者 · 2016-7-4 15:40

最近在调TM7707这块芯片，有大神用过这块芯片吗，这是我的初始化程序大家帮忙看看哪里出问题了：
void TM7707_init(void)
{
  SCLK1_H();
  DIN1_H();
  udelay(1);
  write_byte(0x50);
  write_byte(0x00);
  udelay(1);
  write_byte(0x20);
  write_byte(0x03);
  udelay(1);
//  write_byte(0x10);
//  write_byte(0x04);
  write_byte(0x10);
  write_byte(0x44);
  while(DRDY);
}

void write_byte(u8 data)
{
  u8 i;
  for(i=0; i<8; i++)
  {
SCLK1_L();
udelay(1);
if((data & 0x80))
   DIN1_H();
else
   DIN1_L();
SCLK1_H();
data <<= 1;
  }
}

u8 read_data(void)
{
  u8 j = 0, rdata = 0;
  u8 doutbit = 0;
  for(j=0; j<8; j++)
  {
SCLK1_L();
udelay(1);
if(DOUT == RESET)
   doutbit = 0;
else
   doutbit = 1;
rdata = ((rdata << 1)| doutbit);
SCLK1_H();
  }
  return rdata;
}

uint32_t read_ch1_result(void)
{
  u32 tm_result = 0, a[3] = {0};
  u8 sum[10] = { 0 };
  u8 i = 0,flag = 0;
  static u32 k = 0;
while(DRDY != RESET);
write_byte(0x38);
for(i=0; i<3; i++)
{
   a[i] = read_data();
}

tm_result = a[0] + (a[1] * 256) + (a[2] * 65536);
return tm_result;
}