四路灰度传感器与stm32f103rct6连接的代码

四路灰度传感器一般使用模拟输入，可以将其连接到STM32F103RCT6的ADC通道上进行读取。以下是一个示例代码，假设四个灰度传感器分别连接到了ADC通道1-4上：

#include "stm32f10x.h"

#define ADC1_DR_Address    ((u32)0x4001244C)

u16 ADC_ConvertedValue[4];

int main(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    ADC_InitTypeDef ADC_InitStructure;
    DMA_InitTypeDef DMA_InitStructure;

    /* Enable DMA1 clock */
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);

    /* Enable ADC1 and GPIOA clock */
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOA, ENABLE);

    /* Configure ADC Channel1-4 pins as analog input */
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 | GPIO_Pin_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    /* DMA1 channel1 configuration */
    DMA_DeInit(DMA1_Channel1);
    DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)ADC1_DR_Address;
    DMA_InitStructure.DMA_MemoryBaseAddr = (u32)&ADC_ConvertedValue;
    DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;
    DMA_InitStructure.DMA_BufferSize = 4;
    DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
    DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
    DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_HalfWord;
    DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_HalfWord;
    DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
    DMA_InitStructure.DMA_Priority = DMA_Priority_High;
    DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;
    DMA_Init(DMA1_Channel1, &DMA_InitStructure);

    /* Enable DMA1 channel1 */
    DMA_Cmd(DMA1_Channel1, ENABLE);

    /* ADC1 configuration */
    ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
    ADC_InitStructure.ADC_ScanConvMode = ENABLE;
    ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
    ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
    ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
    ADC_InitStructure.ADC_NbrOfChannel = 4;
    ADC_Init(ADC1, &ADC_InitStructure);

    /* ADC1 regular channel1-4 configuration */
    ADC_RegularChannelConfig(ADC1, ADC_Channel_0, 1, ADC_SampleTime_55Cycles5);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 2, ADC_SampleTime_55Cycles5);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_2, 3, ADC_SampleTime_55Cycles5);
    ADC_RegularChannelConfig(ADC1, ADC_Channel_3, 4, ADC_SampleTime_55Cycles5);

    /* Enable ADC1 DMA */
    ADC_DMACmd(ADC1, ENABLE);

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

    /* Start ADC1 Software Conversion */
    ADC_SoftwareStartConvCmd(ADC1, ENABLE);

    while (1)
    {
        /* Do something with ADC_ConvertedValue */
    }
}

这段代码使用了DMA来实现连续转换。在每次转换完成后，DMA将转换结果存储到ADC_ConvertedValue数组中。你可以在while循环中使用这些数据进行处理。