stm32 - 串口
OLED显示屏
oled.h
#ifndef__OLED_H#define__OLED_HvoidOLED_Init(void);voidOLED_Clear(void);voidOLED_ShowChar(uint8_t Line,uint8_t Column,char Char);voidOLED_ShowString(uint8_t Line,uint8_t Column,char*String);voidOLED_ShowNum(uint8_t Line,uint8_t Column,uint32_t Number,uint8_t Length);voidOLED_ShowSignedNum(uint8_t Line,uint8_t Column,int32_t Number,uint8_t Length);voidOLED_ShowHexNum(uint8_t Line,uint8_t Column,uint32_t Number,uint8_t Length);voidOLED_ShowBinNum(uint8_t Line,uint8_t Column,uint32_t Number,uint8_t Length);#endif
oled.c
#include"stm32f10x.h"#include"OLED_Font.h"/*引脚配置*/#defineOLED_W_SCL(x)GPIO_WriteBit(GPIOB, GPIO_Pin_8,(BitAction)(x))#defineOLED_W_SDA(x)GPIO_WriteBit(GPIOB, GPIO_Pin_9,(BitAction)(x))/*引脚初始化*/voidOLED_I2C_Init(void){RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
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
*/voidOLED_I2C_Start(void){OLED_W_SDA(1);OLED_W_SCL(1);OLED_W_SDA(0);OLED_W_SCL(0);}/**
* @brief I2C停止
* @param 无
* @retval 无
*/voidOLED_I2C_Stop(void){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
*/voidOLED_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);}/**
* @brief OLED写命令
* @param Command 要写入的命令
* @retval 无
*/voidOLED_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
*/voidOLED_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
*/voidOLED_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位置高4位OLED_WriteCommand(0x00|(X &0x0F));//设置X位置低4位}/**
* @brief OLED清屏
* @param 无
* @retval 无
*/voidOLED_Clear(void){uint8_t i, j;for(j =0; j <8; j++){OLED_SetCursor(j,0);for(i =0; i <128; i++){OLED_WriteData(0x00);}}}/**
* @brief OLED显示一个字符
* @param Line 行位置,范围:1~4
* @param Column 列位置,范围:1~16
* @param Char 要显示的一个字符,范围:ASCII可见字符
* @retval 无
*/voidOLED_ShowChar(uint8_t Line,uint8_t Column,char Char){uint8_t i;OLED_SetCursor((Line -1)*2,(Column -1)*8);//设置光标位置在上半部分for(i =0; i <8; i++){OLED_WriteData(OLED_F8x16[Char -' '][i]);//显示上半部分内容}OLED_SetCursor((Line -1)*2+1,(Column -1)*8);//设置光标位置在下半部分for(i =0; i <8; i++){OLED_WriteData(OLED_F8x16[Char -' '][i +8]);//显示下半部分内容}}/**
* @brief OLED显示字符串
* @param Line 起始行位置,范围:1~4
* @param Column 起始列位置,范围:1~16
* @param String 要显示的字符串,范围:ASCII可见字符
* @retval 无
*/voidOLED_ShowString(uint8_t Line,uint8_t Column,char*String){uint8_t i;for(i =0; String[i]!='\0'; i++){OLED_ShowChar(Line, Column + i, String[i]);}}/**
* @brief OLED次方函数
* @retval 返回值等于X的Y次方
*/uint32_tOLED_Pow(uint32_t X,uint32_t Y){uint32_t Result =1;while(Y--){
Result *= X;}return Result;}/**
* @brief OLED显示数字(十进制,正数)
* @param Line 起始行位置,范围:1~4
* @param Column 起始列位置,范围:1~16
* @param Number 要显示的数字,范围:0~4294967295
* @param Length 要显示数字的长度,范围:1~10
* @retval 无
*/voidOLED_ShowNum(uint8_t Line,uint8_t Column,uint32_t Number,uint8_t Length){uint8_t i;for(i =0; i < Length; i++){OLED_ShowChar(Line, Column + i, Number /OLED_Pow(10, Length - i -1)%10+'0');}}/**
* @brief OLED显示数字(十进制,带符号数)
* @param Line 起始行位置,范围:1~4
* @param Column 起始列位置,范围:1~16
* @param Number 要显示的数字,范围:-2147483648~2147483647
* @param Length 要显示数字的长度,范围:1~10
* @retval 无
*/voidOLED_ShowSignedNum(uint8_t Line,uint8_t Column,int32_t Number,uint8_t Length){uint8_t i;uint32_t Number1;if(Number >=0){OLED_ShowChar(Line, Column,'+');
Number1 = Number;}else{OLED_ShowChar(Line, Column,'-');
Number1 =-Number;}for(i =0; i < Length; i++){OLED_ShowChar(Line, Column + i +1, Number1 /OLED_Pow(10, Length - i -1)%10+'0');}}/**
* @brief OLED显示数字(十六进制,正数)
* @param Line 起始行位置,范围:1~4
* @param Column 起始列位置,范围:1~16
* @param Number 要显示的数字,范围:0~0xFFFFFFFF
* @param Length 要显示数字的长度,范围:1~8
* @retval 无
*/voidOLED_ShowHexNum(uint8_t Line,uint8_t Column,uint32_t Number,uint8_t Length){uint8_t i, SingleNumber;for(i =0; i < Length; i++){
SingleNumber = Number /OLED_Pow(16, Length - i -1)%16;if(SingleNumber <10){OLED_ShowChar(Line, Column + i, SingleNumber +'0');}else{OLED_ShowChar(Line, Column + i, SingleNumber -10+'A');}}}/**
* @brief OLED显示数字(二进制,正数)
* @param Line 起始行位置,范围:1~4
* @param Column 起始列位置,范围:1~16
* @param Number 要显示的数字,范围:0~1111 1111 1111 1111
* @param Length 要显示数字的长度,范围:1~16
* @retval 无
*/voidOLED_ShowBinNum(uint8_t Line,uint8_t Column,uint32_t Number,uint8_t Length){uint8_t i;for(i =0; i < Length; i++){OLED_ShowChar(Line, Column + i, Number /OLED_Pow(2, Length - i -1)%2+'0');}}/**
* @brief OLED初始化
* @param 无
* @retval 无
*/voidOLED_Init(void){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);//关闭显示OLED_WriteCommand(0xD5);//设置显示时钟分频比/振荡器频率OLED_WriteCommand(0x80);OLED_WriteCommand(0xA8);//设置多路复用率OLED_WriteCommand(0x3F);OLED_WriteCommand(0xD3);//设置显示偏移OLED_WriteCommand(0x00);OLED_WriteCommand(0x40);//设置显示开始行OLED_WriteCommand(0xA1);//设置左右方向,0xA1正常 0xA0左右反置OLED_WriteCommand(0xC8);//设置上下方向,0xC8正常 0xC0上下反置OLED_WriteCommand(0xDA);//设置COM引脚硬件配置OLED_WriteCommand(0x12);OLED_WriteCommand(0x81);//设置对比度控制OLED_WriteCommand(0xCF);OLED_WriteCommand(0xD9);//设置预充电周期OLED_WriteCommand(0xF1);OLED_WriteCommand(0xDB);//设置VCOMH取消选择级别OLED_WriteCommand(0x30);OLED_WriteCommand(0xA4);//设置整个显示打开/关闭OLED_WriteCommand(0xA6);//设置正常/倒转显示OLED_WriteCommand(0x8D);//设置充电泵OLED_WriteCommand(0x14);OLED_WriteCommand(0xAF);//开启显示OLED_Clear();//OLED清屏}
本文转载自: https://blog.csdn.net/L_fengzifei/article/details/133465642
版权归原作者 aoaoGofei 所有, 如有侵权,请联系我们删除。
版权归原作者 aoaoGofei 所有, 如有侵权,请联系我们删除。