写一个代码：51单片机利用TCS3200识别颜色，并通过串口发送颜色信息，要求不用定时器，不用外部中断

以下是一个基本的代码框架，用于在51单片机上使用TCS3200颜色传感器识别颜色并通过串口发送颜色信息。该代码使用延时函数来控制传感器读取，而不使用定时器或外部中断。

#include <REG51.H>
#include <stdio.h>

#define FREQ_OSC 11059200
#define BAUD_RATE 9600
#define TCS3200_OUT P0

void init_serial();
void init_tcs3200();
void send_color(int red, int green, int blue);
void delay_us(unsigned int us);
void delay_ms(unsigned int ms);

void main()
{
    unsigned int red, green, blue;

    init_serial();
    init_tcs3200();

    while(1)
    {
        // Set S2 and S3 to read red color
        TCS3200_OUT &= ~(1<<2);
        TCS3200_OUT |= (1<<3);

        // Wait for sensor to stabilize
        delay_ms(10);

        // Read color value
        red = TCS3200_OUT;

        // Set S2 and S3 to read green color
        TCS3200_OUT &= ~(1<<2);
        TCS3200_OUT &= ~(1<<3);

        // Wait for sensor to stabilize
        delay_ms(10);

        // Read color value
        green = TCS3200_OUT;

        // Set S2 and S3 to read blue color
        TCS3200_OUT |= (1<<2);
        TCS3200_OUT &= ~(1<<3);

        // Wait for sensor to stabilize
        delay_ms(10);

        // Read color value
        blue = TCS3200_OUT;

        // Send color information over serial port
        send_color(red, green, blue);

        // Wait for a moment before reading again
        delay_ms(1000);
    }
}

void init_serial()
{
    TMOD |= 0x20;
    TH1 = 256 - FREQ_OSC / (32 * BAUD_RATE);
    TR1 = 1;
    SCON = 0x50;
}

void init_tcs3200()
{
    // Initialize S0 and S1 to divide frequency by 1
    TCS3200_OUT &= ~(1<<0);
    TCS3200_OUT &= ~(1<<1);

    // Initialize S2 and S3 to output frequency scaling factor of 2%
    TCS3200_OUT &= ~(1<<2);
    TCS3200_OUT |= (1<<3);
}

void send_color(int red, int green, int blue)
{
    char buffer[16];

    sprintf(buffer, "R:%d G:%d B:%d\r\n", red, green, blue);

    while(*buffer)
    {
        SBUF = *buffer++;
        while(!TI);
        TI = 0;
    }
}

void delay_us(unsigned int us)
{
    int i;

    for(i = 0; i < us; i++)
    {
        _nop_();
    }
}

void delay_ms(unsigned int ms)
{
    int i;

    for(i = 0; i < ms; i++)
    {
        delay_us(1000);
    }
}

请注意，此代码仅用于参考和示例。实际上，您需要根据您的特定硬件和应用程序要求进行调整和修改。