STM32 F103 基础实验
2024-07-02 17:49:33
索引
【1】led灯实验
【2】定时器计时
【3】矩阵按键
【4】OLED显示实验
[4.1]oled i2c驱动程序
[4.2]oled 写数据命令
[4.3]SSH1106 初始化程序
[4.4]oled 汉字显示程序
[4.5]oled BMP图像显示程序
【5】
[4.1]USART串口实验
【1】LED灯
功能：点亮PC13LED灯
#include "stm32f10x.h" // Device header
void Led()
{
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE);//APB2时钟GPIO_InitTypeDef led;led.GPIO_Mode=GPIO_Mode_Out_PP;led.GPIO_Pin=GPIO_Pin_13; //PC13led.GPIO_Speed=GPIO_Speed_10MHz;GPIO_Init(GPIOC,&led);
}int main()
{Led();while(1){GPIO_ResetBits(GPIOC,GPIO_Pin_13);//led低电平有效}
}【2】定时器
功能：实现每秒计数加1
#include "stm32f10x.h" // Device headervoid Timer_Init(unsigned int arr,unsigned int psc)
{RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);//开启APB1定时器3的时钟TIM_TimeBaseInitTypeDef Timer;Timer.TIM_ClockDivision=TIM_CKD_DIV1;Timer.TIM_CounterMode=TIM_CounterMode_Up;Timer.TIM_Period=arr;Timer.TIM_Prescaler=psc;TIM_TimeBaseInit(TIM3,&Timer);TIM_Cmd(TIM3,ENABLE);//打开定时器TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE);//使能定时器更新中断
}void TIM_IRQNHandle(void)//定时器服务函数
{if(TIM_GetITStatus(TIM3,TIM_IT_Update)){TIM_ClearFlag(TIM3,TIM_IT_Update);//清除定时器标志位sec++; //此处为定时器服务函数，此处在oled显示秒++}}int main()
{Timer_Init(7199,9999); //((arr+1)*(psc+1)/72M)OLED_Init(); OLED_Clear();//清屏Timer_Init(7199,9999);//((arr+1)*(psc+1)/CLK)while(1){TIM_IRQNHandle();OLED_ShowNum(1,7,sec,2);//OLED显示函数}
}【3】矩阵按键
功能：实现S1-S16键值录入
C1-C4为行，R1-R4为列
接线：C1-C4接单片机引脚PA4-PA7；R1-R4依次接单片机引脚PB0,PB1,PB10,PB11
#include "stm32f10x.h" // Device header
#include <delay.h>
#define C1_H GPIO_SetBits(GPIOA,GPIO_Pin_4)
#define C2_H GPIO_SetBits(GPIOA,GPIO_Pin_5)
#define C3_H GPIO_SetBits(GPIOA,GPIO_Pin_6)
#define C4_H GPIO_SetBits(GPIOA,GPIO_Pin_7)#define C1_L GPIO_ResetBits(GPIOA,GPIO_Pin_4)
#define C2_L GPIO_ResetBits(GPIOA,GPIO_Pin_5)
#define C3_L GPIO_ResetBits(GPIOA,GPIO_Pin_6)
#define C4_L GPIO_ResetBits(GPIOA,GPIO_Pin_7)#define R1_H GPIO_SetBits(GPIOB,GPIO_Pin_0)
#define R2_H GPIO_SetBits(GPIOB,GPIO_Pin_1)
#define R3_H GPIO_SetBits(GPIOB,GPIO_Pin_10)
#define R4_H GPIO_SetBits(GPIOB,GPIO_Pin_11)#define R1_L GPIO_ResetBits(GPIOB,GPIO_Pin_0)
#define R2_L GPIO_ResetBits(GPIOB,GPIO_Pin_1)
#define R3_L GPIO_ResetBits(GPIOB,GPIO_Pin_10)
#define R4_L GPIO_ResetBits(GPIOB,GPIO_Pin_11) int KeyNum = 0;//键值void Led()
{RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE);//APB2时钟GPIO_InitTypeDef led;led.GPIO_Mode=GPIO_Mode_Out_PP;led.GPIO_Pin=GPIO_Pin_13; //PC13led.GPIO_Speed=GPIO_Speed_10MHz;GPIO_Init(GPIOC,&led);
}void GPIO_init()
{ RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);GPIO_InitTypeDef GPIOA_InitStruct;//设置列R1-R4GPIOA_InitStruct.GPIO_Mode=GPIO_Mode_IPU;//行设置为上拉输入GPIOA_InitStruct.GPIO_Pin=GPIO_Pin_7|GPIO_Pin_6|GPIO_Pin_5|GPIO_Pin_4;GPIOA_InitStruct.GPIO_Speed=GPIO_Speed_50MHz;GPIO_Init(GPIOA,&GPIOA_InitStruct);GPIO_InitTypeDef GPIOB_InitStruct;//设置行C1-C4GPIOB_InitStruct.GPIO_Mode=GPIO_Mode_Out_PP;//列设置为推挽输出GPIOB_InitStruct.GPIO_Pin=GPIO_Pin_11|GPIO_Pin_10|GPIO_Pin_1|GPIO_Pin_0;GPIOB_InitStruct.GPIO_Speed=GPIO_Speed_50MHz;GPIO_Init(GPIOB,&GPIOB_InitStruct);}
void Key_Mulit()
{C1_H;C2_H;C3_H;C4_H;R1_L;R2_H;R3_H;R4_H;if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_4)==0)//扫描第一行，判断第一列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_4)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_4)==0);//判断松手KeyNum=1;GPIO_ResetBits(GPIOC,GPIO_Pin_13); }}if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_5)==0)//扫描第一行，判断第二列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_5)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_5)==0);//判断松手KeyNum=2;GPIO_SetBits(GPIOC,GPIO_Pin_13); }}if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_6)==0)//扫描第一行，判断第三列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_6)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_6)==0);//判断松手KeyNum=3;GPIO_ResetBits(GPIOC,GPIO_Pin_13); }}if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)==0)//扫描第一行，判断第四列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)==0);//判断松手KeyNum=4;GPIO_SetBits(GPIOC,GPIO_Pin_13); }}R1_H;R2_L;R3_H;R4_H;if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_4)==0)//扫描第二行，判断第一列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_4)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_4)==0);//判断松手KeyNum=5;GPIO_ResetBits(GPIOC,GPIO_Pin_13); }}if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_5)==0)//扫描第二行，判断第二列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_5)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_5)==0);//判断松手KeyNum=6;GPIO_SetBits(GPIOC,GPIO_Pin_13); }}if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_6)==0)//扫描第二行，判断第三列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_6)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_6)==0);//判断松手KeyNum=7;GPIO_ResetBits(GPIOC,GPIO_Pin_13); }}if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)==0)//扫描第二行，判断第四列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)==0);//判断松手KeyNum=8;GPIO_SetBits(GPIOC,GPIO_Pin_13); }}R1_H;R2_H;R3_L;R4_H;if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_4)==0)//扫描第三行，判断第一列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_4)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_4)==0);//判断松手KeyNum=9;GPIO_ResetBits(GPIOC,GPIO_Pin_13); }}if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_5)==0)//扫描第三行，判断第二列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_5)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_5)==0);//判断松手KeyNum=10;GPIO_SetBits(GPIOC,GPIO_Pin_13); }}if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_6)==0)//扫描第三行，判断第三列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_6)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_6)==0);//判断松手KeyNum=11;GPIO_ResetBits(GPIOC,GPIO_Pin_13); }}if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)==0)//扫描第三行，判断第四列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)==0);//判断松手KeyNum=12;GPIO_SetBits(GPIOC,GPIO_Pin_13); }}R1_H;R2_H;R3_H;R4_L;if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_4)==0)//扫描第四行，判断第一列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_4)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_4)==0);//判断松手KeyNum=13;GPIO_ResetBits(GPIOC,GPIO_Pin_13); }}if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_5)==0)//扫描第四行，判断第二列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_5)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_5)==0);//判断松手KeyNum=14;GPIO_SetBits(GPIOC,GPIO_Pin_13); }}if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_6)==0)//扫描第四行，判断第三列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_6)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_6)==0);//判断松手KeyNum=15;GPIO_ResetBits(GPIOC,GPIO_Pin_13); }}if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)==0)//扫描第四行，判断第四列是否为低{Delay_ms(2);if(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)==0){while(GPIO_ReadInputDataBit(GPIOA,GPIO_Pin_7)==0);//判断松手KeyNum=16;GPIO_SetBits(GPIOC,GPIO_Pin_13); }}}
int main(void)
{Led(); //led灯初始化GPIO_init();//矩阵按键引脚GPIO_SetBits(GPIOC,GPIO_Pin_13);//关闭led灯 while (1){Key_Mulit();//用led判断矩阵按键功能是否实现}
}
【4.1】OLED I2C 驱动程序
OLED使用SSH1106驱动芯片，只需更改初始化程序即可移植
SDA 接 B9 ; SCL 接 B8
#include "stm32f10x.h" // Device header
#define uint8_t unsigned char/*引脚配置*/
#define OLED_W_SCL(x) GPIO_WriteBit(GPIOB, GPIO_Pin_8, (BitAction)(x))
#define OLED_W_SDA(x) GPIO_WriteBit(GPIOB, GPIO_Pin_9, (BitAction)(x))/*引脚初始化*/
void OLED_I2C_Init(void)
{RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);GPIO_InitTypeDef GPIO_InitStructure;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;GPIO_Init(GPIOB, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;GPIO_Init(GPIOB, &GPIO_InitStructure);OLED_W_SCL(1);OLED_W_SDA(1);
}/*** @brief I2C开始* @param 无* @retval 无*/
void OLED_I2C_Start()
{OLED_W_SDA(1);OLED_W_SCL(1);OLED_W_SDA(0);OLED_W_SCL(0);
}/*** @brief I2C停止* @param 无* @retval 无*/
void OLED_I2C_Stop()
{OLED_W_SDA(0);OLED_W_SCL(1);OLED_W_SDA(1);
}/*** @brief I2C发送一个字节* @param Byte 要发送的一个字节* @retval 无*/
void OLED_I2C_SendByte(uint8_t Byte)
{uint8_t i;for (i = 0; i < 8; i++){OLED_W_SDA(Byte & (0x80 >> i));OLED_W_SCL(1);OLED_W_SCL(0);}OLED_W_SCL(1); //额外的一个时钟，不处理应答信号OLED_W_SCL(0);
}
【4.2】OLED 写 数据|命令
/*** @brief OLED写命令* @param Command 要写入的命令* @retval 无*/
void OLED_WriteCommand(uint8_t Command)
{OLED_I2C_Start();OLED_I2C_SendByte(0x78); //从机地址OLED_I2C_SendByte(0x00); //写命令OLED_I2C_SendByte(Command); OLED_I2C_Stop();
}/*** @brief OLED写数据* @param Data 要写入的数据* @retval 无*/
void OLED_WriteData(uint8_t Data)
{OLED_I2C_Start();OLED_I2C_SendByte(0x78); //从机地址OLED_I2C_SendByte(0x40); //写数据OLED_I2C_SendByte(Data);OLED_I2C_Stop();
}/*** @brief OLED设置光标位置* @param Y 以左上角为原点，向下方向的坐标，范围：0~7* @param X 以左上角为原点，向右方向的坐标，范围：0~127* @retval 无*/
void OLED_SetCursor(uint8_t Y, uint8_t X)
{OLED_WriteCommand(0xB0 + Y); //设置Y位置OLED_WriteCommand(0x10 | ((X & 0xF0) >> 4)); //设置X位置低4位OLED_WriteCommand(0x01 | (X & 0x0F)); //设置X位置高4位
}/*** @brief OLED清屏* @param 无* @retval 无*/
void OLED_Clear(void)
{ uint8_t i, j;for (j = 0; j < 8; j++){OLED_SetCursor(j, 0);for(i = 0; i < 132; i++) //1.3寸OLED地址偏移2，0.9寸改为128即可{OLED_WriteData(0x00);}}
}SSH1106初始化程序
void OLED_Init()
{uint32_t i, j;for (i = 0; i < 1000; i++) //上电延时{for (j = 0; j < 1000; j++);}OLED_I2C_Init(); //端口初始化OLED_WriteCommand(0xAE);//set display display ON/OFF,AFH/AEHOLED_WriteCommand(0x02);OLED_WriteCommand(0x10);OLED_WriteCommand(0x40);//set display start line:COM0OLED_WriteCommand(0xB0);OLED_WriteCommand(0x81);//set contrast controlOLED_WriteCommand(0xCF);OLED_WriteCommand(0xA1);//entire display on: A4H:OFF/A5H:ONOLED_WriteCommand(0xC8); //该指令控制显示方向显示方向0xc8或者0xc0//Write_Command(0xC0);OLED_WriteCommand(0xAF);OLED_WriteCommand(0xA7);//set normal/inverse display: A6H:normal/A7H:inverseOLED_WriteCommand(0xA8);//set multiplex ratioOLED_WriteCommand(0x3F);//1/64dutyOLED_WriteCommand(0xD3);//set display offsetOLED_WriteCommand(0x00);//OLED_WriteCommand(0xD5);//set display clock divide ratio/oscillator frequencyOLED_WriteCommand(0x80);//105HzOLED_WriteCommand(0xD9);//Dis-charge /Pre-charge Period Mode SetOLED_WriteCommand(0xF1);//OLED_WriteCommand(0xDA);//Common Pads Hardware Configuration Mode SetOLED_WriteCommand(0x12);//OLED_WriteCommand(0xDB);//set vcomh deselect levelOLED_WriteCommand(0x40);//VCOM = β X VREF = (0.430 + A[7:0] X 0.006415) X VREFOLED_WriteCommand(0xA4);OLED_WriteCommand(0xA6);OLED_WriteCommand(0xAF);//set display display ON/OFF,AEH/AFH//这两条指令是设置反显，取消注释即为打开反显，//OLED_WriteCommand(0xAF);//OLED_WriteCommand(0xA7);//set normal/inverse display: A6H:normal/A7H:inverseOLED_Clear();
}
【4.3】OLED 汉字字模库 | BMP图像库
//使用软件添加字模库
//16*16
const unsigned char Tab[]={0x20,0x24,0x24,0x24,0xFE,0x23,0x22,0x20,//我
0x20,0xFF,0x20,0x22,0x2C,0xA0,0x20,0x00,
0x00,0x08,0x48,0x84,0x7F,0x02,0x41,0x40,
0x20,0x13,0x0C,0x14,0x22,0x41,0xF8,0x00, 0x00,0xF8,0x0C,0x0B,0x08,0x08,0xF8,0x40,//的
0x30,0x8F,0x08,0x08,0x08,0xF8,0x00,0x00,
0x00,0x7F,0x21,0x21,0x21,0x21,0x7F,0x00,
0x00,0x00,0x43,0x80,0x40,0x3F,0x00,0x00,};//BMP图像库const unsigned char BMP0[]={
0x00,0xFE,0xFE,0x06,0x06,0xE6,0xE6,0xE6,
0xE6,0xE6,0x06,0xFE,0xFE,0x00,0x00,0xC6,
0xD8,0xD8,0xDE,0xDE,0xDE,0xF8,0xF8,0x1E,
0xD8,0xD8,0xDE,0xCE,0xC0,0x04,0x06,0x20,
0x20,0x20,0x30,0x3E,0xDE,0xDE,0x00,0x0C,
0x1E,0x1E,0x1E,0xD8,0xDC,0xFE,0xFE,0xFE,
0x38,0x00,0x00,0xFE,0xFE,0x06,0xE6,0xE6,
0xE6,0xE6,0xE6,0x06,0x06,0xFE,0xFE,0x00,
0x00,0x00,0x1F,0x1F,0x18,0x18,0xDB,0x1B,
0x1B,0xDB,0xD9,0xD8,0xDF,0xDF,0x00,0x00,
0xD8,0x01,0x01,0xD8,0x21,0x23,0x1B,0x1B,
0x24,0x3B,0x3B,0x23,0x23,0xDB,0x04,0x04,
0xFB,0xFB,0xE7,0xEF,0x9C,0xE4,0xE4,0xFC,
0x7C,0x26,0xD8,0xD8,0xE0,0x9E,0x1F,0xC7,
0xC7,0x3F,0xC0,0xC0,0x1F,0x1F,0x18,0x19,
0x1B,0xDB,0x9B,0x1B,0x18,0x18,0xDF,0x9F,
0x00,0x00,0x00,0xE0,0xE0,0xE0,0xE0,0x03,
0x90,0x98,0x60,0x60,0x0C,0x64,0x64,0x9B,
0x91,0x80,0x10,0x10,0x80,0x9F,0x9F,0x03,
0x03,0xFF,0x60,0x60,0x73,0x7B,0x1C,0x63,
0xE3,0x63,0x63,0x63,0x23,0x03,0x7C,0x7C,
0x73,0x9C,0x9C,0x9C,0x9C,0x7C,0xBC,0x98,
0x83,0x83,0x83,0x73,0x7B,0xE4,0xE4,0x04,
0x7C,0x7C,0xE3,0xE3,0x80,0xE7,0xE7,0x84,
0x84,0x00,0x00,0x00,0x03,0x03,0x00,0x00,
0x7C,0xF3,0xF3,0x6C,0x6C,0x6F,0x93,0x93,
0x8F,0x87,0x00,0x9C,0x9C,0x70,0x0F,0x0F,
0xEC,0xEC,0xEF,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x9C,0x70,0x70,0x7F,0x4D,
0x0C,0x00,0x01,0xF3,0x30,0x10,0x73,0x73,
0x0F,0x8F,0x8F,0x90,0x91,0x83,0xF3,0xF3,
0xFF,0xFF,0x00,0x00,0x00,0x38,0x38,0x46,
0xC6,0xF8,0xCF,0xCF,0x38,0xB8,0xC8,0xC9,
0xC9,0x07,0x87,0xC6,0xF7,0xF7,0xC8,0xC6,
0xC6,0xFF,0xFF,0x03,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0xFF,0xC8,0xCC,0xFE,
0xFE,0xFE,0x08,0x0C,0xCF,0x0C,0x08,0xBE,
0x3E,0x0E,0x47,0xC7,0x01,0x01,0x41,0xFF,
0xFF,0xC1,0xC1,0x00,0x00,0x00,0x27,0x37,
0xC6,0xC6,0x07,0xC0,0xC0,0x07,0x07,0x31,
0x36,0x36,0xCF,0xCF,0xC9,0xCE,0xDE,0x39,
0x47,0xC7,0xF8,0xF8,0xC7,0xE1,0xF1,0x06,
0x06,0x18,0x0E,0x0E,0x37,0x37,0x36,0xB2,
0xF1,0x38,0x38,0xF0,0xC8,0xC8,0xC6,0xC6,
0xD9,0xC9,0xD9,0xC6,0xC6,0xFE,0x9E,0x0E,
0xF7,0xE7,0xC0,0x20,0x30,0x0F,0x0F,0x00,
0x39,0x39,0xF7,0xE7,0x00,0x00,0x00,0xF9,
0xF9,0x18,0x18,0xD9,0xD9,0xD9,0xD9,0x99,
0x19,0xF9,0xF9,0x01,0xA4,0xE6,0x3E,0x3E,
0xC0,0xE0,0xE0,0xFE,0xFE,0xDE,0x38,0x38,
0x38,0x38,0x00,0x84,0xC6,0xDF,0xDF,0xD9,
0xDB,0x3F,0x00,0x00,0x01,0x86,0xC6,0x1F,
0x1F,0xE1,0xE1,0xE1,0x1F,0x1F,0xFF,0xC3,
0xC1,0xD9,0xD9,0xC1,0xFF,0xFF,0xC1,0x81,
0x18,0xF9,0xF9,0x3E,0x3C,0x00,0x00,0x00,
0x7F,0x7F,0x60,0x60,0x67,0x67,0x67,0x67,
0x67,0x60,0x7F,0x7F,0x00,0x04,0x04,0x64,
0x64,0x00,0x1C,0x1C,0x78,0x78,0x1F,0x3B,
0x7B,0x7C,0x7C,0x60,0x61,0x63,0x03,0x03,
0x03,0x11,0x18,0x78,0x78,0x18,0x11,0x03,
0x1B,0x1B,0x1B,0x14,0x04,0x1B,0x1B,0x7B,
0x07,0x07,0x60,0x60,0x7F,0x6C,0x64,0x07,
0x07,0x00,0x73,0x7B,0x67,0x67,0x00,0x00,};
【4.4】OLED 汉字显示
x 取值 0-127
y 取值 0-8
N为字模第n组数组显示的汉字
void Chinese_Dis(unsigned char x,unsigned char y,unsigned char N)//显示16*16汉字
{unsigned int Num =N*32;unsigned int i = 0;OLED_SetCursor(y,x+2); for ( i = 0; i < 16; i++){OLED_WriteData(Tab[Num]); Num+=1;}OLED_SetCursor(y+1,x+2); for (i = 0; i < 16; i++){OLED_WriteData(Tab[Num]); Num+=1;}
} int main()
{OLED_Init(); while(1){Chinese_Dis(1,1,0);Chinese_Dis(16,1,1);}
}
x取值范围：0-127
y取值范围：0-7
N为字模库第几个字
oled显示展示
【4.5】OLED BMP显示
void Oled_DisBMP(unsigned char x0,unsigned char y0,unsigned char x1,unsigned char y1，const unsigned char Disp[])
{unsigned int j=0;unsigned char x,y;if(y1%8==0) {y=y1/8;} else {y=y1/8+1;}for(y=y0;y<y1;y++){OLED_SetCursor(y,x0);for(x=x0;x<x1;x++){ OLED_WriteData(Disp[j++]); }}
}函数内有五个参数，x0与·y0是BMP图像在oled显示起始位置，x1，y1是图像末位置,Disp 是显示那个BMP字库数组名称，例如：要显示BMP0[]={...} 这个数组，则在函数中输入 Oled_DisBMP(x0,x1,y0,y1,BMP0)；
x1，x0 范围：0-127
y1 ，x1 范围：0-7
int main()
{OLED_Init();while(1){Oled_DisBMP(0,0,65,8,BMP0);}
}
BMP显示实验展示
[图片]
【5】USART 串口实验
#include "stm32f10x.h" // Device header
#include "stdio.h"void led()//led PE5初始化
{RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE,ENABLE);GPIO_InitTypeDef GPIO_InitStruct;GPIO_InitStruct.GPIO_Mode=GPIO_Mode_Out_PP;GPIO_InitStruct.GPIO_Pin=GPIO_Pin_5|GPIO_Pin_6;GPIO_InitStruct.GPIO_Speed=GPIO_Speed_50MHz;GPIO_Init(GPIOE,&GPIO_InitStruct);
}
void CUSART_init()//串口初始化函数
{GPIO_InitTypeDef GPIO_InitStruct;//GPIO结构体USART_InitTypeDef USART_InitStruct;//USART结构体NVIC_InitTypeDef NVIC_InitStruct;//中断结构体RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);GPIO_InitStruct.GPIO_Mode=GPIO_Mode_AF_PP;//GPIO_InitStruct.GPIO_Pin=GPIO_Pin_9;//设置RX,TX端口串口使能GPIO_InitStruct.GPIO_Speed=GPIO_Speed_10MHz;GPIO_Init(GPIOA,&GPIO_InitStruct);GPIO_InitStruct.GPIO_Mode=GPIO_Mode_IN_FLOATING;//设置端口浮空输入GPIO_InitStruct.GPIO_Pin=GPIO_Pin_10;//设置RX,TX端口串口使能GPIO_InitStruct.GPIO_Speed=GPIO_Speed_10MHz;GPIO_Init(GPIOA,&GPIO_InitStruct);USART_InitStruct.USART_BaudRate=9600;//波特率USART_InitStruct.USART_HardwareFlowControl=USART_HardwareFlowControl_None;//硬件流设置USART_InitStruct.USART_Mode=USART_Mode_Tx | USART_Mode_Rx;//设置串口模式USART_InitStruct.USART_Parity=USART_Parity_No;//不使用奇偶校验USART_InitStruct.USART_StopBits=USART_StopBits_1;//设置停止位 1USART_InitStruct.USART_WordLength=USART_WordLength_8b;//传输或接受传输数据位USART_Init(USART1,&USART_InitStruct);USART_Cmd(USART1,ENABLE);//使能串口USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); //开启串口接受中断 NVIC_InitStruct.NVIC_IRQChannel=USART1_IRQn;NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE;NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority=1;NVIC_InitStruct.NVIC_IRQChannelSubPriority=1;NVIC_Init(&NVIC_InitStruct);
}#define USAERT_REC_LEN 200
unsigned char USART_RX_BUF[USAERT_REC_LEN]; //接受缓冲
unsigned int USART_RX_STA =0; //接受状态标志位/*
USART_RX_STA 定义为一个 16进制的标志位
接收到 0x8000 为 1000 0000 0000 0000 最高位(第15位)接收到1,表示接受完成
接收到 0x4000 同上第14位接收到1,表示接受到0x0d
0d 表示回车
oa 表示换行
以0d,0a结尾表示接收完成注意:蓝牙和STM32的波特率必须一致
如需使用蓝牙app与MCU通信将TX接到RX*/
void USART1_IRQHandler()//串口一中断服务函数
{unsigned char res; //将接受的数据存放dataif(USART_GetITStatus(USART1,USART_IT_RXNE)!= RESET)//接受的数据以0x0d,0x0a结尾{res=USART_ReceiveData(USART1);//读取接受数据if((USART_RX_STA&0x8000)==0)//接受未完成{if(USART_RX_STA&0x4000)//接收到0x0d{if(res != 0x0a)//如果未接受到0x0a{USART_RX_STA=0;}else{USART_RX_STA|=0x8000;//接收完成 }}else//如果未接受到0x0d{if(res==0x0d)//接收到了{USART_RX_STA|=0x4000;}else{USART_RX_BUF[USART_RX_STA&0x3ffff]=res;// 0011 1111 1111 1111,储存数据个数USART_RX_STA++;//接受到的有效数据个数+1 GPIO_SetBits(GPIOE,GPIO_Pin_6);//关闭ledif(res== 0x45)//HC-05接收到0x45这个数据{GPIO_SetBits(GPIOE,GPIO_Pin_5);//关闭led}if(USART_RX_STA>(USAERT_REC_LEN-1))//接收数据出错,重新开始接受{USART_RX_STA=0;}}}}USART_SendData(USART1,res);//将储存的数据发送出去}} // 发送数据int fputc(int ch, FILE *f){USART_SendData(USART1, (unsigned char) ch);// USART1 可以换成 USART2 等while (!(USART1->SR & USART_FLAG_TXE));return (ch);}// 接收数据int GetKey (void) {while (!(USART1->SR & USART_FLAG_RXNE));return ((int)(USART1->DR & 0x1FF));}int main()
{NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);CUSART_init();led();//GPIO_ResetBits(GPIOE,GPIO_Pin_5);//关闭ledwhile(1){USART1_IRQHandler();}}实验效果 :
未显示打印信息可能是未勾选[Use MicroLIB选项]
勾选上即可
滴答定时器延时1us
void Delay_us(uint32_t xus)
{SysTick->LOAD = 72 * xus; //设置定时器重装值SysTick->VAL = 0x00; //清空当前计数值SysTick->CTRL = 0x00000005; //设置时钟源为HCLK，启动定时器while(!(SysTick->CTRL & 0x00010000)); //等待计数到0SysTick->CTRL = 0x00000004; //关闭定时器
}
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