uint32 bluetooth_ch9141_read_buff (uint8 *buff, uint32 len) { uint32 data_len = len; fifo_read_buffer(&bluetooth_ch9141_fifo, buff, &data_len, FIFO_READ_AND_CLEAN); return data_len; }uint32 bluetooth_ch9141_send_buff (uint8 *buff, uint32 len) { uint16 time_count = 0; while(len > 30) { time_count = 0; while(BLUETOOTH_CH9141_RTS_PIN && time_count++ < BLUETOOTH_CH9141_TIMEOUT_COUNT) // 如果RTS为低电平，则继续发送数据 delay_ms(1); if(time_count >= BLUETOOTH_CH9141_TIMEOUT_COUNT) return len; // 模块忙,如果允许当前程序使用while等待 则可以使用后面注释的while等待语句替换本if语句 uart_putbuff(BLUETOOTH_CH9141_INDEX, buff, 30); buff += 30; // 地址偏移 len -= 30; // 数量 } time_count = 0; while(BLUETOOTH_CH9141_RTS_PIN && time_count++ < BLUETOOTH_CH9141_TIMEOUT_COUNT) // 如果RTS为低电平，则继续发送数据 delay_ms(1); if(time_count >= BLUETOOTH_CH9141_TIMEOUT_COUNT) return len; // 模块忙,如果允许当前程序使用while等待 则可以使用后面注释的while等待语句替换本if语句 uart_putbuff(BLUETOOTH_CH9141_INDEX, buff, (uint16)len); // 发送最后的数据 return 0; }uint8 bluetooth_ch9141_init (void) { wireless_type = WIRELESS_CH9141; // 本函数使用的波特率为115200 为蓝牙转串口模块的默认波特率 如需其他波特率请使用上位机修改模块参数 fifo_init(&bluetooth_ch9141_fifo, bluetooth_ch9141_buffer, BLUETOOTH_CH9141_BUFFER_SIZE); uart_init(BLUETOOTH_CH9141_INDEX, BLUETOOTH_CH9141_TX_PIN, BLUETOOTH_CH9141_RX_PIN, BLUETOOTH_CH9141_BUAD_RATE, BLUETOOTH_CH9141_TIMER); return 0; } void bluetooth_ch9141_uart_callback (void) { // 读取无线串口的数据 并且置位接收标志 bluetooth_ch9141_data = BLUETOOTH_CH9141_DATA_BUF; fifo_write_buffer(&bluetooth_ch9141_fifo, &bluetooth_ch9141_data, 1); // 存入 FIFO } static fifo_struct bluetooth_ch9141_fifo; static uint8 bluetooth_ch9141_buffer[BLUETOOTH_CH9141_BUFFER_SIZE]; // 数据存放数组 static uint8 bluetooth_ch9141_data;将以上代码改写一个适合于HC-05的蓝牙代码基于stc3

以下是基于 STC3 的 HC-05 蓝牙模块的修改后代码示例：

#include <reg51.h>

#define BLUETOOTH_HC05_BUFFER_SIZE 64
#define BLUETOOTH_HC05_TIMEOUT_COUNT 1000

typedef struct {
    uint8_t buffer[BLUETOOTH_HC05_BUFFER_SIZE];
    uint8_t head;
    uint8_t tail;
} fifo_struct;

fifo_struct bluetooth_hc05_fifo;

void fifo_init(fifo_struct *fifo)
{
    fifo->head = 0;
    fifo->tail = 0;
}

void fifo_write_buffer(fifo_struct *fifo, uint8_t *data, uint8_t len)
{
    uint8_t i;
    for (i = 0; i < len; i++) {
        fifo->buffer[fifo->head] = data[i];
        fifo->head = (fifo->head + 1) % BLUETOOTH_HC05_BUFFER_SIZE;
    }
}

uint8_t fifo_read_buffer(fifo_struct *fifo, uint8_t *data, uint8_t *len)
{
    uint8_t i;
    for (i = 0; i < *len; i++) {
        if (fifo->head == fifo->tail) {
            // Buffer is empty
            *len = i;
            return 1;
        }
        data[i] = fifo->buffer[fifo->tail];
        fifo->tail = (fifo->tail + 1) % BLUETOOTH_HC05_BUFFER_SIZE;
    }
    return 0;
}

void delay_ms(uint16_t ms)
{
    uint16_t i, j;
    for (i = 0; i < ms; i++) {
        for (j = 0; j < 120; j++) {
            // Delay approximately 1ms
        }
    }
}

void uart_init(uint32_t buad_rate)
{
    // UART initialization code for STC3
    // Set UART baud rate and other configuration
}

void uart_putbuff(uint8_t *buff, uint8_t len)
{
    // UART send buffer code for STC3
    // Send the buffer over UART
}

void uart_getbuff(uint8_t *buff, uint8_t len)
{
    // UART receive buffer code for STC3
    // Receive data into the buffer over UART
}

uint32_t bluetooth_hc05_read_buff(uint8_t *buff, uint32_t len)
{
    uint32_t data_len = len;
    fifo_read_buffer(&bluetooth_hc05_fifo, buff, &data_len);
    return data_len;
}

uint32_t bluetooth_hc05_send_buff(uint8_t *buff, uint32_t len)
{
    uint16_t time_count = 0;

    while (len > 30) {
        time_count = 0;
        while (time_count++ < BLUETOOTH_HC05_TIMEOUT_COUNT && BLUETOOTH_HC05_RTS_PIN) {
            delay_ms(1);
        }

        if (time_count >= BLUETOOTH_HC05_TIMEOUT_COUNT) {
            return len; // 模块忙,如果允许当前程序使用 while 等待则可以使用后面注释的 while 等待语句替换本 if 语句
        }

        uart_putbuff(buff, 30);

        buff += 30; // 地址偏移
        len -= 30; // 数量
    }

    time_count = 0;
    while (time_count++ < BLUETOOTH_HC05_TIMEOUT_COUNT && BLUETOOTH_HC05_RTS_PIN) {
        delay_ms(1);
    }

    if (time_count >= BLUETOOTH_HC05_TIMEOUT_COUNT) {
        return len; // 模块忙,如果允许当前程序使用 while 等待则可以使用后面注释的 while 等待语句替换本 if 语句
    }

    uart_putbuff(buff, (uint16_t)len); // 发送最后的数据

    return 0;
}

uint8_t bluetooth_hc05_init(void)
{
    // Initialization code for HC-05 on STC3
    fifo_init(&bluetooth_hc05_fifo);
    uart_init(BLUETOOTH_HC05_BUAD_RATE);
    return 0;
}

void bluetooth_hc05_uart_callback(void)
{
    uint8_t data = uart_getbuff();
    fifo_write_buffer(&bluetooth_hc05_fifo, &data, 1); // 存入 FIFO
}

uint8_t bluetooth_hc05_data;

void main(void)
{
    bluetooth_hc05_init();
    
    while (1) {
        // Main program loop
        // Read and process data from the FIFO buffer
        while (bluetooth_hc05_data = fifo_read_buffer(&bluetooth_hc05_fifo)) {
            // Process data
        }
    }
}

请注意，上述代码仅为示例，具体的引脚定义和常量值需要根据你的硬件和需求进行修改。另外，需要根据实际情况修改函数中的 UART 初始化、发送和接收函数，以适配 STC3 的硬件平台。