OLED_ShowString(3, 1, "Speed3:"); uint8_t RX_Data; while(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET); RX_Data = USART_ReceiveData(USART1); if(RX_Data == '1') { OLED_ShowString(1, 1, "Speed1:"); } else if(RX_Data == '2') { OLED_ShowString(2, 1, "Speed2:");

这段代码是在嵌入式系统中使用的，主要是通过串口通信的方式接收数据，并根据数据的不同值来控制 OLED 屏幕显示不同的文字。具体来说，该代码首先在 OLED 屏幕上显示 "Speed3:" 这个字符串，然后通过串口接收数据，存储在 RX_Data 变量中。如果 RX_Data 的值为 '1'，则 OLED 屏幕上显示 "Speed1:"；如果 RX_Data 的值为 '2'，则 OLED 屏幕上显示 "Speed2:"。

这段代码可能是用于控制某种设备的速度，根据不同的输入值来改变速度等级，并通过 OLED 屏幕来显示当前的速度等级。

相关问题

2，项目题目 《无线温湿度报警系统》 项目功能： ①获取温湿度数据 ②. 设置温湿度数据阀值，低于或超过阀值则进行系统报警(蜂鸣器、LED) 3. 使用OLED显示屏显示温湿度数据和系统状态 4 通过串口通信方式，将温湿度数据和系统状态发送到用户端(USB线连接PC、蓝牙连接手机) ⑤ 系统报警状态下，通过一定方式进行自调整(通风，加热，加湿) STM32读取DHT11温湿度传感器并显示在数码管上 使用材料：STM32F103、DHT11温湿度传感器、OLED 平台：keil 技术实现：利用单片机读DHT11的温湿度数据，并且显示到OLED上 ，求代码

由于这是一个比较复杂的项目，需要多个模块的代码来实现。以下是基本框架和代码，供参考：

主函数：

#include "stm32f10x.h"
#include "dht11.h"
#include "oled.h"
#include "usart.h"
#include "delay.h"

int main(void) {
    uint8_t temp, humi;
    int alarm = 0;
    int fan = 0, heater = 0, humidifier = 0;
    int count = 0;
    SystemInit();
    OLED_Init();
    USART1_Init(115200);
    DHT11_Init();
    while (1) {
        DHT11_Read_Data(&temp, &humi);
        OLED_Show_Temperature_Humidity(temp, humi);
        if (temp < TEMP_LOW_THRESHOLD || temp > TEMP_HIGH_THRESHOLD ||
            humi < HUMI_LOW_THRESHOLD || humi > HUMI_HIGH_THRESHOLD) {
            alarm = 1;
            GPIO_SetBits(GPIOA, GPIO_Pin_8);
            GPIO_SetBits(GPIOC, GPIO_Pin_13);
        } else {
            alarm = 0;
            GPIO_ResetBits(GPIOA, GPIO_Pin_8);
            GPIO_ResetBits(GPIOC, GPIO_Pin_13);
        }
        if (alarm) {
            if (count < 10) {
                fan = 1;
                heater = 1;
                humidifier = 1;
            } else {
                fan = 0;
                heater = 0;
                humidifier = 0;
                count = 0;
            }
            count++;
        }
        USART_SendData(USART1, temp);
        while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
        USART_SendData(USART1, humi);
        while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
        USART_SendData(USART1, alarm);
        while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
        USART_SendData(USART1, fan);
        while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
        USART_SendData(USART1, heater);
        while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
        USART_SendData(USART1, humidifier);
        while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
        delay_ms(1000);
    }
}

DHT11模块：

#include "dht11.h"

#define DHT11_GPIO GPIOB
#define DHT11_Pin GPIO_Pin_2

void DHT11_Init(void) {
    GPIO_InitTypeDef GPIO_InitStructure;
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
    GPIO_InitStructure.GPIO_Pin = DHT11_Pin;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(DHT11_GPIO, &GPIO_InitStructure);
}

void DHT11_Set_Input(void) {
    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin = DHT11_Pin;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(DHT11_GPIO, &GPIO_InitStructure);
}

void DHT11_Set_Output(void) {
    GPIO_InitTypeDef GPIO_InitStructure;
    GPIO_InitStructure.GPIO_Pin = DHT11_Pin;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(DHT11_GPIO, &GPIO_InitStructure);
}

uint8_t DHT11_Read_Byte(void) {
    uint8_t byte = 0;
    for (int i = 0; i < 8; i++) {
        byte <<= 1;
        while (GPIO_ReadInputDataBit(DHT11_GPIO, DHT11_Pin) == RESET);
        delay_us(28);
        if (GPIO_ReadInputDataBit(DHT11_GPIO, DHT11_Pin) == SET) {
            byte |= 0x01;
        }
        while (GPIO_ReadInputDataBit(DHT11_GPIO, DHT11_Pin) == SET);
    }
    return byte;
}

void DHT11_Read_Data(uint8_t* temp, uint8_t* humi) {
    uint8_t data[5];
    DHT11_Set_Output();
    GPIO_ResetBits(DHT11_GPIO, DHT11_Pin);
    delay_ms(18);
    GPIO_SetBits(DHT11_GPIO, DHT11_Pin);
    delay_us(30);
    DHT11_Set_Input();
    while (GPIO_ReadInputDataBit(DHT11_GPIO, DHT11_Pin) == SET);
    while (GPIO_ReadInputDataBit(DHT11_GPIO, DHT11_Pin) == RESET);
    while (GPIO_ReadInputDataBit(DHT11_GPIO, DHT11_Pin) == SET);
    for (int i = 0; i < 5; i++) {
        data[i] = DHT11_Read_Byte();
    }
    if ((data[0] + data[1] + data[2] + data[3]) == data[4]) {
        *humi = data[0];
        *temp = data[2];
    }
}

OLED模块：

#include "oled.h"

#define OLED_GPIO GPIOA
#define OLED_DC GPIO_Pin_2
#define OLED_RST GPIO_Pin_3
#define OLED_CS GPIO_Pin_4

void OLED_Write_Command(uint8_t cmd) {
    GPIO_ResetBits(OLED_GPIO, OLED_DC);
    GPIO_ResetBits(OLED_GPIO, OLED_CS);
    SPI_I2S_SendData(SPI1, cmd);
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_BSY) == SET);
    GPIO_SetBits(OLED_GPIO, OLED_CS);
}

void OLED_Write_Data(uint8_t data) {
    GPIO_SetBits(OLED_GPIO, OLED_DC);
    GPIO_ResetBits(OLED_GPIO, OLED_CS);
    SPI_I2S_SendData(SPI1, data);
    while (SPI_I2S_GetFlagStatus(SPI1, SPI_I2S_FLAG_BSY) == SET);
    GPIO_SetBits(OLED_GPIO, OLED_CS);
}

void OLED_Init(void) {
    GPIO_InitTypeDef GPIO_InitStructure;
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
    GPIO_InitStructure.GPIO_Pin = OLED_DC | OLED_RST | OLED_CS;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_Init(OLED_GPIO, &GPIO_InitStructure);
    SPI_InitTypeDef SPI_InitStructure;
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
    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_Low;
    SPI_InitStructure.SPI_CPHA = SPI_CPHA_1Edge;
    SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
    SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_4;
    SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
    SPI_Init(SPI1, &SPI_InitStructure);
    SPI_Cmd(SPI1, ENABLE);
    OLED_Write_Command(0xAE); //display off
    OLED_Write_Command(0x20); //Set Memory Addressing Mode
    OLED_Write_Command(0x10); //00,Horizontal Addressing Mode;01,Vertical Addressing Mode;10,Page Addressing Mode (RESET);11,Invalid
    OLED_Write_Command(0xb0); //Set Page Start Address for Page Addressing Mode,0-7
    OLED_Write_Command(0xc8); //Set COM Output Scan Direction
    OLED_Write_Command(0x00); //---set low column address
    OLED_Write_Command(0x10); //---set high column address
    OLED_Write_Command(0x40); //--set start line address
    OLED_Write_Command(0x81); //--set contrast control register
    OLED_Write_Command(0xff);
    OLED_Write_Command(0xa1); //--set segment re-map 0 to 127
    OLED_Write_Command(0xa6); //--set normal display
    OLED_Write_Command(0xa8); //--set multiplex ratio(1 to 64)
    OLED_Write_Command(0x3f); //
    OLED_Write_Command(0xa4); //0xa4,Output follows RAM content;0xa5,Output ignores RAM content
    OLED_Write_Command(0xd3); //-set display offset
    OLED_Write_Command(0x00); //-not offset
    OLED_Write_Command(0xd5); //--set display clock divide ratio/oscillator frequency
    OLED_Write_Command(0xf0); //--set divide ratio
    OLED_Write_Command(0xd9); //--set pre-charge period
    OLED_Write_Command(0x22); //
    OLED_Write_Command(0xda); //--set com pins hardware configuration
    OLED_Write_Command(0x12);
    OLED_Write_Command(0xdb); //--set vcomh
    OLED_Write_Command(0x20); //0x20,0.77xVcc
    OLED_Write_Command(0x8d); //--set DC-DC enable
    OLED_Write_Command(0x14); //
    OLED_Write_Command(0xaf); //--turn on oled panel
    OLED_Clear();
}

void OLED_Clear(void) {
    OLED_Write_Command(0xb0);
    OLED_Write_Command(0x00);
    OLED_Write_Command(0x10);
    for (int i = 0; i < 8; i++) {
        for (int j = 0; j < 128; j++) {
            OLED_Write_Data(0x00);
        }
    }
}

void OLED_Show_Char(uint8_t x, uint8_t y, uint8_t chr) {
    if (x > 127 || y > 7) {
        return;
    }
    uint8_t c = chr - ' ';
    OLED_Write_Command(0xb0 + y);
    OLED_Write_Command(x & 0x0f);
    OLED_Write_Command(0x10 | ((x >> 4) & 0x0f));
    for (int i = 0; i < 6; i++) {
        OLED_Write_Data(Font6x8[c][i]);
    }
}

void OLED_Show_String(uint8_t x, uint8_t y, char* str) {
    while (*str) {
        OLED_Show_Char(x, y, *str++);
        x += 6;
    }
}

void OLED_Show_Temperature_Humidity(uint8_t temp, uint8_t humi) {
    OLED_Clear();
    OLED_Show_String(0, 0, "TEMP:");
    OLED_Show_Char(48, 0, temp / 10 + '0');
    OLED_Show_Char(54, 0, temp % 10 + '0');
    OLED_Show_Char(60, 0, 'C');
    OLED_Show_String(0, 1, "HUMI:");
    OLED_Show_Char(48, 1, humi / 10 + '0');
    OLED_Show_Char(54, 1, humi % 10 + '0');
    OLED_Show_Char(60, 1, '%');
}

USART模块：

#include "usart.h"

void USART1_Init(uint32_t baud_rate) {
    GPIO_InitTypeDef GPIO_InitStructure;
    USART_InitTypeDef USART_InitStructure;
    RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | 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 = baud_rate;
    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);
    USART_Cmd(USART1, ENABLE);
}

int USART_SendData(USART_TypeDef* usart, uint8_t data) {
    while (USART_GetFlagStatus(usart, USART_FLAG_TXE) == RESET);
    USART_SendData(usart, data);
    return data;
}

uint8_t USART_ReceiveData(USART_TypeDef* usart) {
    while (USART_GetFlagStatus(usart, USART_FLAG_RXNE) == RESET);
    return USART_ReceiveData(usart);
}

其他模块：

delay.h：

#ifndef __DELAY_H
#define __DELAY_H

#include "stm32f10x.h"

void delay_us(uint32_t us);
void delay_ms(uint32_t ms);

#endif

delay.c：

#include "delay.h"

static uint32_t us_ticks = 0;

void SysTick_Handler(void) {
    if (us_ticks != 0) {
        us_ticks--;
    }
}

void delay_us(uint32_t us) {
    us_ticks = us;
    while (us_ticks);
}

void delay_ms(uint32_t ms) {
    while (ms--) {
        delay_us(1000);
    }
}

Font6x8.h：

#ifndef __FONT6X8_H
#define __FONT6X8_H

#include "stm32f10x.h"

extern const uint8_t Font6x8[][6];

#endif

Font6x8.c：

#include "Font6x8.h"

const uint8_t Font6x8[][6] = {
    {0x00,0x00,0x00,0x00,0x00,0x00},/*" ",0*/
    {0x00,0x00,0x5f,0x00,0x00,0x00},/*"!",1*/
    {0x00,0x07,0x00,0x07,0x00,0x00},/*""",2*/
    {0x14,0x7f,0x14,0x7f,0x14,0x00},/*"#",3*/
    {0x24,0x2a,0x7f,0x2a,0x12,0x00},/*"$",4*/
    {0x23,0x13,0x08,0x64,0x62,0x00},/*"%",5*/
    {0x36,0x49,0x55,0x22,0x50,0x00},/*"&",6*/
    {0x00,0x05,0x03,0x00,0x00,0x00},/*"'",7*/
    {0x00,0x1c,0x22,0x41,0x00,0x00},/*"(",8*/
    {0x00,0x41,0x22,0x1c,0x00,0x00},/*")",9*/
    {0x14,0x08,0x3e,0x08,0x14,0x00},/*"*",10*/
    {0x08,0x08,0x3e,0x08,0x08,0x00},/*"+",11*/
    {0x00,0x50,0x30,0x00,0x00,0x00},/*",",12*/
    {0x08,0x08,0x08,0x08,0x08,0x00},/*"-",13*/
    {0x00,0x60,0x60,0x00,0x00,0x00},/*".",14*/
    {0x20,0x10,0x08,0x04,0x02,0x00},/*"/",15*/
    {0x3e,0x51,0x49,0x45,0x3e,0x00},/*"0",16*/
    {0x00,0x42,0x7f,0x40,0x00,0x00},/*"1",17*/
    {0x42,0x61,0x51,0x49,0x46,0x00},/*"2",18*/
    {0x21,0x41,0x45,0x4b,0x31,0x00},/*"3",19*/
    {0x18,0x14,0x12,0x7f,0x10,0x00},/*"4",20*/
    {0x27,0x45,0x45,0x45,0x39,0x00},/*"5",21*/
    {0x3c,0x4a,0x49,0x49,0x30,0x00},/*"6",22*/
    {0x01,0x71,0x09,0x05,0x03,0x00},/*"7",23*/
   

stm32f103c8t6oled显示时间

好的，为了实现这个功能，你需要准备以下材料：
- STM32F103C8T6开发板
- OLED显示屏
- 杜邦线若干

步骤如下：
1. 连接OLED显示屏和STM32F103C8T6开发板，具体连接方式可参考OLED显示屏的数据手册。
2. 在Keil MDK中新建一个工程，并添加STM32F103C8T6的支持包和OLED显示屏的驱动程序。
3. 编写程序，在程序中使用RTC（实时时钟）模块获取当前时间，并将时间信息显示在OLED屏幕上。
4. 通过USART串口通信功能，将当前时间发送给PC端，实现与PC端的时间同步功能。

以下是示例代码，你可以根据自己的实际情况进行修改和优化：

#include "stm32f10x.h"
#include "oled.h"
#include "rtc.h"
#include "usart.h"

// RTC时钟初始化
void RTC_Configuration(void)
{
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
    PWR_BackupAccessCmd(ENABLE);
    BKP_DeInit();
    RCC_LSEConfig(RCC_LSE_ON);
    while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET);
    RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
    RCC_RTCCLKCmd(ENABLE);
    RTC_WaitForSynchro();
    RTC_WaitForLastTask();
    RTC_ITConfig(RTC_IT_SEC, ENABLE);
    RTC_WaitForLastTask();
    RTC_SetPrescaler(32767);
    RTC_WaitForLastTask();
}

int main(void)
{
    // 初始化RTC时钟
    RTC_Configuration();

    // 初始化串口
    USART_Configuration();

    // 初始化OLED显示屏
    OLED_Init();

    while (1)
    {
        // 获取RTC当前时间
        RTC_TimeTypeDef RTC_TimeStruct;
        RTC_GetTime(RTC_Format_BIN, &RTC_TimeStruct);

        // 将时间信息转换为字符串格式
        char timeStr[20];
        sprintf(timeStr, "%02d:%02d:%02d", RTC_TimeStruct.RTC_Hours, RTC_TimeStruct.RTC_Minutes, RTC_TimeStruct.RTC_Seconds);

        // 在OLED屏幕上显示时间信息
        OLED_ShowString(0, 0, (uint8_t*)timeStr, 16);

        // 将时间信息发送给PC端
        USART_SendString(timeStr);

        // 延时一定时间，避免频繁更新
        delay_ms(1000);
    }
}

希望这个回答能够对你有所帮助！