已解决 73482 个问题
已帮助 5993 位优秀工程师

stm32f103驱动sht20得到的温度不变化始终128

lichangle 2018-06-23 浏览量：1539

#define SHT2x_I2C_PORT          GPIOA
#define SHT2x_SCL_PIN           GPIO_Pin_6        //6
#define SHT2x_SDA_PIN           GPIO_Pin_7        //7
#define SHT2x_SCL_HIGH()        GPIO_SetBits(SHT2x_I2C_PORT SHT2x_SCL_PIN)
#define SHT2x_SCL_LOW()         GPIO_ResetBits(SHT2x_I2C_PORT SHT2x_SCL_PIN)
#define SHT2x_SDA_HIGH()             GPIO_SetBits(SHT2x_I2C_PORT SHT2x_SDA_PIN)
#define SHT2x_SDA_LOW()         GPIO_ResetBits(SHT2x_I2C_PORT SHT2x_SDA_PIN)
#define SHT2x_SCL_STATE()       GPIO_ReadInputDataBit(SHT2x_I2C_PORT SHT2x_SCL_PIN)
#define SHT2x_SDA_STATE()       GPIO_ReadInputDataBit(SHT2x_I2C_PORT SHT2x_SDA_PI
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB  ENABLE);
void SHT2x_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB  ENABLE);
    GPIO_InitStructure.GPIO_Pin =  SHT2x_SCL_PIN | SHT2x_SDA_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(SHT2x_I2C_PORT &GPIO_InitStructure);
    SHT2x_SCL_HIGH();
    SHT2x_SDA_HIGH();
    SHT2x_Delay(80);
    SHT2x_SoftReset();
}
如上代码 请问是哪里的问题?