stm32f103c8t6连接ec01g，at指令得到GPS位置，解析GPS数据代码

以下是一个简单的示例代码，用于连接STM32F103C8T6和EC01G，并使用AT指令获取GPS位置并解析数据：

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

#define GPS_BUFFER_LEN 256

char GPS_Buffer[GPS_BUFFER_LEN];
uint16_t GPS_Buffer_Index = 0;

void USART1_IRQHandler(void)
{
    if (USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
    {
        char ch = USART_ReceiveData(USART1);

        if (GPS_Buffer_Index < GPS_BUFFER_LEN - 1)
        {
            GPS_Buffer[GPS_Buffer_Index++] = ch;
        }

        if (ch == '\n')
        {
            GPS_Buffer[GPS_Buffer_Index] = '\0';

            // 解析GPS数据
            if (strstr(GPS_Buffer, "$GPGGA"))
            {
                char* p = strtok(GPS_Buffer, ",");
                int i = 0;
                while (p != NULL)
                {
                    switch (i++)
                    {
                        case 2: // 纬度
                        {
                            float lat = atof(p + 2) / 60.0f + atof(p) * 100.0f / 60.0f;
                            printf("Latitude: %.6f\r\n", lat);
                            break;
                        }
                        case 3: // 纬度半球
                        {
                            printf("Latitude direction: %c\r\n", *p);
                            break;
                        }
                        case 4: // 经度
                        {
                            float lon = atof(p + 3) / 60.0f + atof(p) * 100.0f / 60.0f;
                            printf("Longitude: %.6f\r\n", lon);
                            break;
                        }
                        case 5: // 经度半球
                        {
                            printf("Longitude direction: %c\r\n", *p);
                            break;
                        }
                        case 6: // GPS状态
                        {
                            printf("GPS status: %c\r\n", *p);
                            break;
                        }
                    }

                    p = strtok(NULL, ",");
                }
            }

            GPS_Buffer_Index = 0;
        }
    }
}

void USART1_Init(void)
{
    GPIO_InitTypeDef GPIO_InitStructure;
    USART_InitTypeDef USART_InitStructure;
    NVIC_InitTypeDef NVIC_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
    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_10;
    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(USART1, &USART_InitStructure);

    NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);

    USART_Cmd(USART1, ENABLE);
}

void EC01G_Send_AT_Command(char* command)
{
    while (*command)
    {
        USART_SendData(USART1, *command++);
        while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
    }
    USART_SendData(USART1, '\r');
    while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
    USART_SendData(USART1, '\n');
    while (USART_GetFlagStatus(USART1, USART_FLAG_TXE) == RESET);
}

void EC01G_Init(void)
{
    EC01G_Send_AT_Command("AT+CGNSPWR=1");
    EC01G_Send_AT_Command("AT+CGNSSEQ=\"RMC\"");
    EC01G_Send_AT_Command("AT+CGNSTST=1");
}

int main(void)
{
    USART1_Init();
    EC01G_Init();

    while (1)
    {
        // 定期发送AT指令获取GPS位置
        EC01G_Send_AT_Command("AT+CGNSINF");
        delay_ms(1000);
    }
}

注意，这只是一个示例代码，可能需要根据你的具体硬件和需求进行修改。