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| 我的数字电位器max5483 I/O口模拟程序大家帮看一下对吗？ |
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新闻出处：21ic 发布时间：2007-06-03
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ccjchen 发布于 2007-6-3 10:24:00
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;
}
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