在keil上用stm32f103c8t6上用esp8266模块获取网络时间在OLED上屏幕显示的库函数详细代码

以下是在Keil上使用STM32F103C8T6和ESP8266模块获取网络时间并在OLED屏幕上显示的示例代码：

#include "stm32f10x.h"
#include "stm32f10x_gpio.h"
#include "stm32f10x_spi.h"
#include "stm32f10x_rcc.h"
#include "stm32f10x_usart.h"
#include "stdio.h"
#include "string.h"

#define OLED_RST_PIN GPIO_Pin_0
#define OLED_DC_PIN GPIO_Pin_1
#define OLED_CS_PIN GPIO_Pin_2
#define OLED_CLK_PIN GPIO_Pin_3
#define OLED_DIN_PIN GPIO_Pin_4
#define OLED_CMD 0
#define OLED_DATA 1

void Delay_ms(uint16_t ms) {
    uint16_t i, j;
    for (i = 0; i < ms; i++) {
        for (j = 0; j < 1141; j++) {}
    }
}

void SPI_Configuration(void) {
    SPI_InitTypeDef SPI_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);

    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13 | GPIO_Pin_14 | GPIO_Pin_15;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

    SPI_InitStructure.SPI_Direction = SPI_Direction_2Lines_FullDuplex;
    SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
    SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
    SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
    SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
    SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
    SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
    SPI_InitStructure.SPI_CRCPolynomial = 7;
    SPI_Init(SPI2, &SPI_InitStructure);

    SPI_Cmd(SPI2, ENABLE);
}

void OLED_WriteByte(uint8_t dat, uint8_t cmd) {
    GPIO_ResetBits(GPIOA, OLED_CS_PIN);
    if (cmd == OLED_DATA) {
        GPIO_SetBits(GPIOA, OLED_DC_PIN);
    } else {
        GPIO_ResetBits(GPIOA, OLED_DC_PIN);
    }
    SPI_I2S_SendData(SPI2, dat);
    while (SPI_I2S_GetFlagStatus(SPI2, SPI_I2S_FLAG_BSY) == SET) {}
    GPIO_SetBits(GPIOA, OLED_CS_PIN);
}

void OLED_Init(void) {
    GPIO_InitTypeDef GPIO_InitStructure;

    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO, ENABLE);

    GPIO_InitStructure.GPIO_Pin = OLED_RST_PIN | OLED_DC_PIN | OLED_CS_PIN;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(GPIOA, &GPIO_InitStructure);

    GPIO_SetBits(GPIOA, OLED_RST_PIN);
    Delay_ms(100);
    GPIO_ResetBits(GPIOA, OLED_RST_PIN);
    Delay_ms(100);
    GPIO_SetBits(GPIOA, OLED_RST_PIN);

    OLED_WriteByte(0xAE, OLED_CMD);
    OLED_WriteByte(0x40, OLED_CMD);
    OLED_WriteByte(0xB0, OLED_CMD);
    OLED_WriteByte(0xC8, OLED_CMD);
    OLED_WriteByte(0x81, OLED_CMD);
    OLED_WriteByte(0xff, OLED_CMD);
    OLED_WriteByte(0xa1, OLED_CMD);
    OLED_WriteByte(0xa6, OLED_CMD);
    OLED_WriteByte(0xa8, OLED_CMD);
    OLED_WriteByte(0x1f, OLED_CMD);
    OLED_WriteByte(0xd3, OLED_CMD);
    OLED_WriteByte(0x00, OLED_CMD);
    OLED_WriteByte(0xd5, OLED_CMD);
    OLED_WriteByte(0xf0, OLED_CMD);
    OLED_WriteByte(0xd9, OLED_CMD);
    OLED_WriteByte(0x22, OLED_CMD);
    OLED_WriteByte(0xda, OLED_CMD);
    OLED_WriteByte(0x02, OLED_CMD);
    OLED_WriteByte(0xdb, OLED_CMD);
    OLED_WriteByte(0x49, OLED_CMD);
    OLED_WriteByte(0x8d, OLED_CMD);
    OLED_WriteByte(0x14, OLED_CMD);
    OLED_WriteByte(0xaf, OLED_CMD);

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_Init(GPIOB, &GPIO_InitStructure);
}

void USART_Configuration(void) {
    USART_InitTypeDef USART_InitStructure;
    GPIO_InitTypeDef GPIO_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);

    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);

    USART_Cmd(USART2, ENABLE);
}

void ESP8266_SendCommand(const char* cmd) {
    while (*cmd) {
        while (USART_GetFlagStatus(USART2, USART_FLAG_TXE) == RESET) {}
        USART_SendData(USART2, *cmd++);
    }
}

char ESP8266_GetChar(void) {
    while (USART_GetFlagStatus(USART2, USART_FLAG_RXNE) == RESET) {}
    return USART_ReceiveData(USART2);
}

void ESP8266_GetResponse(char* response, uint16_t length) {
    uint16_t count = 0;
    char c;
    while (count < length - 1) {
        c = ESP8266_GetChar();
        if (c == '\n') {
            break;
        }
        response[count++] = c;
    }
    response[count] = '\0';
}

void ESP8266_GetTime(char* timeData) {
    ESP8266_SendCommand("AT+CIPUPDATE\r\n");
    Delay_ms(1000);
    ESP8266_GetResponse(timeData, 20); // 假设时间数据长度为20
}

int main(void) {
    OLED_Init();
    SPI_Configuration();
    USART_Configuration();
    
    char timeData[20];
    
    while (1) {
        ESP8266_GetTime(timeData);
        
        // 解析时间数据
        int year = atoi(&timeData[1]);
        int month = atoi(&timeData[5]);
        int day = atoi(&timeData[9]);
        int hour = atoi(&timeData[13]);
        int minute = atoi(&timeData[17]);
        int second = atoi(&timeData[21]);
        
        // 在OLED屏幕上显示时间
        char timeStr[20];
        sprintf(timeStr, "%04d-%02d-%02d %02d:%02d:%02d", year, month, day, hour, minute, second);
        
        // 显示到OLED屏幕上
        // ...
        
        Delay_ms(1000);
    }
}

请注意，这只是一个基本的示例代码。你需要根据具体的硬件连接和OLED屏幕的驱动程序进行适当的修改。同时，请确保在Keil中正确配置了编译器和调试器选项，并将代码正确烧录到STM32F103C8T6开发板上。