stm32f103c8t6串口2发送AT+LOCATION=1指令给EC01g，并解析GPS数据，stm32库函数版本的代码

以下是基于STM32库函数的STM32F103C8T6串口2发送AT+LOCATION=1指令给EC01g，并解析GPS数据的代码，仅供参考：

#include "stm32f10x.h"

#define GPS_BUFFER_SIZE 256
#define GPS_TIMEOUT 1000

uint8_t gps_buffer[GPS_BUFFER_SIZE];
uint8_t gps_data_available = 0;

void USART2_IRQHandler(void)
{
    if (USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
    {
        static uint16_t gps_buffer_index = 0;
        uint8_t temp = USART_ReceiveData(USART2);
        if ((temp == '\n') && (gps_buffer_index > 0))
        {
            gps_buffer[gps_buffer_index] = '\0';
            gps_buffer_index = 0;
            gps_data_available = 1;
        }
        else
        {
            gps_buffer[gps_buffer_index++] = temp;
        }
    }
}

void USART2_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    USART_InitTypeDef USART_InitStructure;
    NVIC_InitTypeDef NVIC_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    USART_InitStructure.USART_BaudRate = 9600;
    USART_InitStructure.USART_WordLength = USART_WordLength_8b;
    USART_InitStructure.USART_StopBits = USART_StopBits_1;
    USART_InitStructure.USART_Parity = USART_Parity_No;
    USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
    USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
    USART_Init(USART2, &USART_InitStructure);

    NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    USART_Cmd(USART2, ENABLE);
    USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
}

void USART2_SendString(const char *str)
{
    while (*str)
    {
        while (USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET);
        USART_SendData(USART2, *str++);
    }
}

uint8_t GPS_WaitForResponse(const char *response, uint32_t timeout)
{
    uint32_t start_time = 0;
    uint8_t response_index = 0;
    uint8_t response_length = strlen(response);
    uint8_t response_found = 0;

    start_time = SysTick->VAL;
    while ((SysTick->VAL - start_time) < timeout)
    {
        if (gps_data_available)
        {
            gps_data_available = 0;
            if (strstr((const char *)gps_buffer, response))
            {
                response_found = 1;
                break;
            }
        }
    }

    return response_found;
}

void GPS_GetData(char *data)
{
    strncpy(data, (const char *)&gps_buffer[9], 18);
    data[18] = '\0';
}

int main(void)
{
    char gps_data[19];
    uint8_t response_received = 0;

    SystemInit();
    SysTick_Config(SystemCoreClock / 1000);

    USART2_Init();

    while (1)
    {
        USART2_SendString("AT+LOCATION=1\r\n");
        response_received = GPS_WaitForResponse("+LOCATION:", GPS_TIMEOUT);
        if (response_received)
        {
            GPS_GetData(gps_data);
            // Do something with the GPS data
        }
        else
        {
            // Handle timeout error
        }

        // Wait for some time before sending the next request
        Delay(5000);
    }
}

以上代码仅供参考，具体实现可能需要根据实际情况进行修改和调整。