STM8单片机和HXD019驱动程序范例
#include "stm8l15x.h"
#include "Spi_flash_hw.h"
#include "mcu_init.h"
#define I2CERR_NO_ERROR 0
#define Delay_Time 21 //28.5us 已校准//550 //H: 25uS-35uS
#define DELAY_ST 20//20.07ms 已校准//19 //18mS-25mS
//extern unsigned char irda_data[232];
/*********************** SDA_PIN ************************/
void SetSDAInput(void) //数据信号端口：输入
{
// GPIO_Init(GPIOC, GPIO_Pin_0, GPIO_Mode_In_PU_No_IT); //设置端口上拉输入无中断
GPIOC->DDR &= (uint8_t)(~GPIO_Pin_0);
// GPIOC->CR1 |= GPIO_Pin_0;
GPIOC->CR1 &= (uint8_t)(~GPIO_Pin_0);
GPIOC->CR2 &= (uint8_t)(~GPIO_Pin_0);
GPIOC->ODR |= GPIO_Pin_0;
/*********************** 开启 IIC ************************/
u16 I2COpen(void)
{
SetSDAOutput();
// SetSCLOutput();
SetSCLHigh();
SetSDAHigh();
return I2CERR_NO_ERROR;
}
/*********************** 关闭 IIC ************************/
u16 I2CClose(void)
{
SetSDAOutput();
// SetSCLOutput();
SetSCLHigh();
SetSDAHigh();
return I2CERR_NO_ERROR;
}
