stc32G串口接收代码

Sure, here is an example code for receiving data from a serial port using STC32G microcontroller:

#include <reg52.h>
#include <stdio.h>

#define BAUDRATE 9600 // Serial baud rate
#define MAX_BUF_SIZE 128 // Maximum buffer size

void UART_Init();
void UART_Receive();

unsigned char rx_buffer[MAX_BUF_SIZE]; // Receive buffer
unsigned int rx_index = 0; // Receive buffer index

void main() {
    UART_Init(); // Initialize UART

    while (1) {
        UART_Receive(); // Receive data from serial port
    }
}

void UART_Init() {
    TMOD = 0x20; // Set Timer1 in mode 2 (8-bit auto-reload)
    TH1 = 256 - (11059200UL / 12UL / 32UL / BAUDRATE); // Calculate baud rate value
    TL1 = TH1; // Set Timer1 initial value

    TR1 = 1; // Start Timer1
    SM0 = 0; // Set UART in mode 1 (8-bit UART, variable baud rate)
    SM1 = 1;
    REN = 1; // Enable UART receiver
    EA = 1; // Enable global interrupts
    ES = 1; // Enable UART interrupts
}

void UART_Receive() interrupt 4 {
    if (RI) { // Check if data is received
        RI = 0; // Clear receive interrupt flag
        rx_buffer[rx_index] = SBUF; // Store received data in buffer
        rx_index++; // Increment buffer index

        if (rx_index >= MAX_BUF_SIZE) {
            rx_index = 0; // Reset buffer index if it exceeds maximum size
        }

        // Process received data as required
        // ...
    }
}

In this code, the UART (Universal Asynchronous Receiver Transmitter) is initialized with a baud rate of 9600. The received data is stored in a buffer (`rx_buffer`) and can be processed as needed within the interrupt handler (`UART_Receive()`). Adjust the baud rate and buffer size according to your requirements.

Note: This code assumes you are using the Keil C51 compiler and the STC32G series microcontroller. Modify it accordingly if you are using a different development environment or microcontroller.