GP2Y0E03 stm32f103c8t6单片机例程

GP2Y0E03是一款红外距离传感器，可以通过测量反射回来的红外线来确定物体的距离。而stm32f103c8t6是一款单片机芯片，可以通过编写程序实现对GP2Y0E03传感器的控制和数据读取。

下面是一个简单的GP2Y0E03 stm32f103c8t6单片机例程：

#include "stm32f10x.h"
#include "stdio.h"
#include "delay.h"

#define GP2Y0E03_PIN GPIO_Pin_0
#define GP2Y0E03_PORT GPIOA
#define GP2Y0E03_RCC RCC_APB2Periph_GPIOA

void USART_Config(void);
void GPIO_Config(void);
void ADC_Config(void);

int main(void)
{
    uint16_t ADC_Value;

    USART_Config();
    GPIO_Config();
    ADC_Config();

    while(1)
    {
        ADC_SoftwareStartConvCmd(ADC1, ENABLE);
        while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
        ADC_Value = ADC_GetConversionValue(ADC1);

        printf("Distance: %.2f cm\r\n", 3027.4 / (ADC_Value - 4.0));

        delay_ms(100);
    }
}

void USART_Config(void)
{
    USART_InitTypeDef USART_InitStructure;
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);

    /* Configure USART1 Rx (PA10) as input floating */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    /* Configure USART1 Tx (PA9) as alternate function push-pull */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    /* USART1 configuration */
    USART_InitStructure.USART_BaudRate = 115200;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;

    USART_Init(USART1, &USART_InitStructure);

    /* Enable USART1 */
    USART_Cmd(USART1, ENABLE);
}

void GPIO_Config(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(GP2Y0E03_RCC, ENABLE);

    /* Configure GP2Y0E03 pin as analog input */
    GPIO_InitStructure.GPIO_Pin = GP2Y0E03_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_Init(GP2Y0E03_PORT, &GPIO_InitStructure);
}

void ADC_Config(void)
{
    ADC_InitTypeDef ADC_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);

    /* ADC configuration */
    ADC_DeInit(ADC1);
    ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
    ADC_InitStructure.ADC_ScanConvMode = DISABLE;
    ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
    ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_NbrOfChannel = 1;
    ADC_Init(ADC1, &ADC_InitStructure);

    /* Configure GP2Y0E03 channel */
    ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_55Cycles5);

    /* Enable ADC */
    ADC_Cmd(ADC1, ENABLE);
}

这个例程中，首先是对USART、GPIO和ADC进行了初始化配置，然后在主循环中不断读取GP2Y0E03传感器的数据并计算出距离。具体实现是通过ADC读取GP2Y0E03输出的模拟信号，并将其转换为距离值进行输出。在这个例程中，通过USART将距离值输出到电脑终端。