stm32f103c8t6串口2发送AT+LOCATION=1指令给EC01g,并显示经纬度，stm32库函数版本的代码

以下是使用STM32F103C8T6的库函数版本的代码示例，用于通过串口2发送AT+LOCATION=1指令并读取EC01g的经纬度信息：

#include "stm32f10x.h"

#define USART2_TX_PIN GPIO_Pin_2
#define USART2_RX_PIN GPIO_Pin_3

void USART2_Config(void);
void USART2_SendChar(char ch);
void USART2_SendString(char* str);
char USART2_ReceiveChar(void);
void USART2_ReceiveString(char* buffer, uint32_t bufferSize);

int main(void) {
    char buffer[100];
    USART2_Config();
    USART2_SendString("AT+LOCATION=1\r\n");
    USART2_ReceiveString(buffer, sizeof(buffer));
    // 解析经纬度信息
    // ...
    while(1);
}

void USART2_Config(void) {
    GPIO_InitTypeDef GPIO_InitStructure;
    USART_InitTypeDef USART_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO | RCC_APB2Periph_USART1, ENABLE);

    // 配置USART2的TX引脚为复用推挽输出
    GPIO_InitStructure.GPIO_Pin = USART2_TX_PIN;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    // 配置USART2的RX引脚为浮空输入
    GPIO_InitStructure.GPIO_Pin = USART2_RX_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    // 配置USART2
    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);

    // 使能USART2
    USART_Cmd(USART2, ENABLE);
}

void USART2_SendChar(char ch) {
    while(USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET);
    USART_SendData(USART2, (uint16_t)ch);
}

void USART2_SendString(char* str) {
    while(*str != '\0') {
        USART2_SendChar(*str++);
    }
}

char USART2_ReceiveChar(void) {
    while(USART_GetFlagStatus(USART2, USART_FLAG_RXNE) == RESET);
    return (char)USART_ReceiveData(USART2);
}

void USART2_ReceiveString(char* buffer, uint32_t bufferSize) {
    char ch;
    uint32_t i = 0;
    do {
        ch = USART2_ReceiveChar();
        buffer[i++] = ch;
    } while(ch != '\n' && i < bufferSize - 1);
    buffer[i] = '\0';
}

在示例代码中，我们首先通过USART2发送AT+LOCATION=1指令，然后使用USART2接收串口数据，并将其存储在缓冲区中。最后，您可以解析缓冲区中的经纬度信息。请注意，此示例代码仅用于参考，您需要根据您的实际情况进行修改。