我的数字电位器max5483 I/O口模拟程序大家帮看一下对吗？时序图如附图所示：
void max5483write(uchar direct,uchar data1,uchar data2)
{
uchar i;
MAX5483_SCLK = 0;
MAX5483_CS18=0;
for (i=0;i<8;i++) //上升沿写入命令
{
MAX5483_SCLK =0;
MAX5483_DIN = (bit)(direct&0x01);
direct = direct>>1;
MAX5483_SCLK =1;
}
for (i=0;i<8;i++) //上升沿写入数据
{
MAX5483_SCLK =0;
MAX5483_DIN = (bit)(data1&0x01);
data1 = data1>>1;
MAX5483_SCLK =1;
}
for (i=0;i<8;i++) //上升沿写入数据
{
MAX5483_SCLK =0;
MAX5483_DIN = (bit)(data2&0x01);
data2 = data2>>1;
MAX5483_SCLK =1;
}
MAX5483_CS18=1;
} |
|
楼主
