基于SCT89C51单片机的GP2Y1010程序

以下是基于SCT89C51单片机的GP2Y1010程序：

#include <REGS51.H>

sbit LED = P1^0;
sbit ADC_CS = P1^1;
sbit ADC_CLK = P1^2;
sbit ADC_DIN = P1^3;
sbit ADC_DOUT = P1^4;

unsigned long adc_value;
float voltage, dust_density;

void delay(int n)
{
    int i, j;
    for (i = 0; i < n; i++)
    {
        for (j = 0; j < 1000; j++);
    }
}

void ADC_Read()
{
    unsigned char i;
    ADC_CS = 0;
    ADC_CLK = 0;
    ADC_DIN = 1;
    delay(1);
    ADC_CLK = 1;
    ADC_DIN = 1;
    delay(1);
    ADC_CLK = 0;
    delay(1);
    ADC_DIN = 0;
    delay(1);
    ADC_CLK = 1;
    delay(1);
    ADC_DIN = 1;
    delay(1);
    ADC_CLK = 0;
    for (i = 0; i < 27; i++)
    {
        ADC_CLK = 1;
        delay(1);
        ADC_CLK = 0;
        delay(1);
    }
    for (i = 0; i < 16; i++)
    {
        ADC_CLK = 1;
        delay(1);
        adc_value <<= 1;
        if (ADC_DOUT)
        {
            adc_value |= 0x01;
        }
        ADC_CLK = 0;
        delay(1);
    }
    ADC_CS = 1;
}

void main()
{
    TMOD = 0x20;
    TH1 = 0xFD;
    SCON = 0x50;
    TR1 = 1;
    P1 = 0x00;
    while (1)
    {
        ADC_Read();
        voltage = adc_value * 4.88 / 4096;
        dust_density = 0.17 * voltage - 0.1;
        if (dust_density <= 0)
        {
            dust_density = 0;
        }
        if (dust_density >= 1.5)
        {
            LED = 0;
        }
        else
        {
            LED = 1;
        }
        TH1 = 0xFD;
        SBUF = dust_density * 10;
        while (!TI);
        TI = 0;
        delay(1000);
    }
}

该程序通过读取GP2Y1010的模拟数据并将其转换为数字数据。然后，将数字数据转换为灰尘密度，并将其发送到串行端口，以便通过串行通信进行监视。如果灰尘密度超过1.5，则LED灯将亮起。