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C51编写的AD7416驱动程序-绝对可用
/*--------------------------------------------------------------------------------
调用方式：void SendAck(void) 私有函数，I2C专用，主器件为接收方，从器件为发送方时，非应答信号。
---------------------------------------------------------------------------------*/
void AD7416_SendNotAck(void)
{
AD7416_SDA=1;
AD7416_delay();
AD7416_SCL=1;
AD7416_delay();
AD7416_SCL=0;
AD7416_delay();
}
/*--------------------------------------------------------------------------------
调用方式：void I2CSend(unsigned char ch) 函数说明：私有函数，I2C专用
---------------------------------------------------------------------------------*/
void AD7416_I2CSendByte(unsigned char ch)
{
unsigned char i=8;
while(i--)
{
AD7416_SCL=0;
_nop_();
AD7416_delay();
AD7416_SDA=(bit)(ch&0x80);
ch<<=1;
AD7416_delay();
AD7416_SCL=1;
AD7416_delay();
}
AD7416_SCL=0;
AD7416_delay();
}
/*--------------------------------------------------------------------------------
调用方式：unsigned char I2CReceive(void) 函数说明：私有函数，I2C专用
---------------------------------------------------------------------------------*/
unsigned char AD7416_I2CReceiveByte(void)
{
unsigned char i=8;
unsigned char dat=0;
AD7416_SDA=1;
while(i--)
{
dat<<=1;
AD7416_SCL=0;
AD7416_delay();
AD7416_SCL=1;
AD7416_delay();
dat|=AD7416_SDA;
}
AD7416_SCL=0;
AD7416_delay();
return(dat);
}
本文转自网络，经“单片机之路”（www.mcuway.com）摘选整理，版权归原作者所有
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