void OLED_IIC_START(void)
{
SDA_OUT(); //SDA线输出
OLED_SDIN=1;
OLED_SCLK=1;
delay_us(4);
OLED_SDIN=0;//START:when CLK is high,DATA change form high to low
delay_us(4);
OLED_SCLK=0;//钳住IIC总线,准备发送或者接收数据
}
void OLED_IIC_STOP(void)
{
SDA_OUT(); //SDA线输出
OLED_SCLK=0;
OLED_SDIN=0;//STOP:when CLK is high DATA change form low to high
delay_us(4);
OLED_SCLK=1;
OLED_SDIN=1;//发送I2C总线结束信号
delay_us(4);
}