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

以下是一份参考代码，需要根据具体串口配置和GPS数据格式进行修改：

#include "stm32f10x.h"
#include <stdio.h>
#include <string.h>

#define GPS_BUFFER_SIZE 256

char gpsBuffer[GPS_BUFFER_SIZE];
uint8_t gpsIndex = 0;
uint8_t gpsReceivedFlag = 0;

void USART2_IRQHandler(void)
{
    if (USART_GetITStatus(USART2, USART_IT_RXNE) != RESET) {
        char data = USART_ReceiveData(USART2);
        if (gpsIndex < GPS_BUFFER_SIZE) {
            gpsBuffer[gpsIndex++] = data;
            if (data == '\n') {
                gpsReceivedFlag = 1;
            }
        }
    }
}

void USART2_Config(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_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    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_ITConfig(USART2, USART_IT_RXNE, ENABLE);

    USART_Cmd(USART2, ENABLE);
}

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

int main(void)
{
    USART2_Config();

    while (1) {
        if (gpsReceivedFlag) {
            gpsReceivedFlag = 0;
            gpsBuffer[gpsIndex] = '\0';
            char* token = strtok(gpsBuffer, ",");
            while (token != NULL) {
                if (strcmp(token, "$GPRMC") == 0) {
                    // 解析GPS数据
                    // 参考 NMEA 0183 标准
                    // ...
                    // 打印解析结果
                    // printf("Latitude: %f, Longitude: %f\n", lat, lon);
                }
                token = strtok(NULL, ",");
            }
            gpsIndex = 0;
        }

        USART2_SendString("AT+LOCATION=1\r\n");
        delay_ms(5000);
    }
}

注意，上述代码仅供参考，需要根据具体的硬件和软件环境进行适当修改。