322 lines
7.4 KiB
C
322 lines
7.4 KiB
C
#include "stm32f10x.h"
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#include "OLED_Font.h"
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/*引脚配置*/
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#define OLED_W_SCL(x) GPIO_WriteBit(GPIOB, GPIO_Pin_8, (BitAction)(x))
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#define OLED_W_SDA(x) GPIO_WriteBit(GPIOB, GPIO_Pin_9, (BitAction)(x))
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/*引脚初始化*/
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void OLED_I2C_Init(void)
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{
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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OLED_W_SCL(1);
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OLED_W_SDA(1);
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}
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/**
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* @brief I2C开始
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* @param 无
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* @retval 无
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*/
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void OLED_I2C_Start(void)
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{
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OLED_W_SDA(1);
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OLED_W_SCL(1);
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OLED_W_SDA(0);
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OLED_W_SCL(0);
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}
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/**
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* @brief I2C停止
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* @param 无
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* @retval 无
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*/
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void OLED_I2C_Stop(void)
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{
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OLED_W_SDA(0);
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OLED_W_SCL(1);
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OLED_W_SDA(1);
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}
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/**
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* @brief I2C发送一个字节
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* @param Byte 要发送的一个字节
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* @retval 无
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*/
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void OLED_I2C_SendByte(uint8_t Byte)
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{
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uint8_t i;
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for (i = 0; i < 8; i++)
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{
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OLED_W_SDA(Byte & (0x80 >> i));
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OLED_W_SCL(1);
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OLED_W_SCL(0);
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}
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OLED_W_SCL(1); //额外的一个时钟，不处理应答信号
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OLED_W_SCL(0);
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}
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/**
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* @brief OLED写命令
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* @param Command 要写入的命令
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* @retval 无
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*/
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void OLED_WriteCommand(uint8_t Command)
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{
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OLED_I2C_Start();
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OLED_I2C_SendByte(0x78); //从机地址
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OLED_I2C_SendByte(0x00); //写命令
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OLED_I2C_SendByte(Command);
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OLED_I2C_Stop();
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}
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/**
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* @brief OLED写数据
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* @param Data 要写入的数据
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* @retval 无
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*/
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void OLED_WriteData(uint8_t Data)
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{
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OLED_I2C_Start();
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OLED_I2C_SendByte(0x78); //从机地址
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OLED_I2C_SendByte(0x40); //写数据
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OLED_I2C_SendByte(Data);
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OLED_I2C_Stop();
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}
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/**
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* @brief OLED设置光标位置
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* @param Y 以左上角为原点，向下方向的坐标，范围：0~7
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* @param X 以左上角为原点，向右方向的坐标，范围：0~127
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* @retval 无
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*/
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void OLED_SetCursor(uint8_t Y, uint8_t X)
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{
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OLED_WriteCommand(0xB0 | Y); //设置Y位置
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OLED_WriteCommand(0x10 | ((X & 0xF0) >> 4)); //设置X位置高4位
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OLED_WriteCommand(0x00 | (X & 0x0F)); //设置X位置低4位
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}
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/**
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* @brief OLED清屏
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* @param 无
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* @retval 无
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*/
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void OLED_Clear(void)
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{
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uint8_t i, j;
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for (j = 0; j < 8; j++)
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{
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OLED_SetCursor(j, 0);
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for(i = 0; i < 128; i++)
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{
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OLED_WriteData(0x00);
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}
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}
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}
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/**
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* @brief OLED显示一个字符
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* @param Line 行位置，范围：1~4
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* @param Column 列位置，范围：1~16
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* @param Char 要显示的一个字符，范围：ASCII可见字符
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* @retval 无
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*/
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void OLED_ShowChar(uint8_t Line, uint8_t Column, char Char)
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{
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uint8_t i;
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OLED_SetCursor((Line - 1) * 2, (Column - 1) * 8); //设置光标位置在上半部分
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for (i = 0; i < 8; i++)
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{
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OLED_WriteData(OLED_F8x16[Char - ' '][i]); //显示上半部分内容
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}
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OLED_SetCursor((Line - 1) * 2 + 1, (Column - 1) * 8); //设置光标位置在下半部分
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for (i = 0; i < 8; i++)
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{
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OLED_WriteData(OLED_F8x16[Char - ' '][i + 8]); //显示下半部分内容
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}
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}
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/**
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* @brief OLED显示字符串
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* @param Line 起始行位置，范围：1~4
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* @param Column 起始列位置，范围：1~16
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* @param String 要显示的字符串，范围：ASCII可见字符
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* @retval 无
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*/
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void OLED_ShowString(uint8_t Line, uint8_t Column, char *String)
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{
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uint8_t i;
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for (i = 0; String[i] != '\0'; i++)
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{
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OLED_ShowChar(Line, Column + i, String[i]);
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}
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}
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/**
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* @brief OLED次方函数
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* @retval 返回值等于X的Y次方
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*/
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uint32_t OLED_Pow(uint32_t X, uint32_t Y)
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{
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uint32_t Result = 1;
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while (Y--)
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{
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Result *= X;
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}
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return Result;
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}
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/**
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* @brief OLED显示数字（十进制，正数）
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* @param Line 起始行位置，范围：1~4
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* @param Column 起始列位置，范围：1~16
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* @param Number 要显示的数字，范围：0~4294967295
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* @param Length 要显示数字的长度，范围：1~10
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* @retval 无
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*/
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void OLED_ShowNum(uint8_t Line, uint8_t Column, uint32_t Number, uint8_t Length)
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{
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uint8_t i;
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for (i = 0; i < Length; i++)
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{
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OLED_ShowChar(Line, Column + i, Number / OLED_Pow(10, Length - i - 1) % 10 + '0');
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}
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}
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/**
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* @brief OLED显示数字（十进制，带符号数）
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* @param Line 起始行位置，范围：1~4
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* @param Column 起始列位置，范围：1~16
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* @param Number 要显示的数字，范围：-2147483648~2147483647
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* @param Length 要显示数字的长度，范围：1~10
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* @retval 无
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*/
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void OLED_ShowSignedNum(uint8_t Line, uint8_t Column, int32_t Number, uint8_t Length)
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{
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uint8_t i;
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uint32_t Number1;
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if (Number >= 0)
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{
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OLED_ShowChar(Line, Column, '+');
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Number1 = Number;
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}
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else
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{
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OLED_ShowChar(Line, Column, '-');
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Number1 = -Number;
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}
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for (i = 0; i < Length; i++)
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{
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OLED_ShowChar(Line, Column + i + 1, Number1 / OLED_Pow(10, Length - i - 1) % 10 + '0');
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}
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}
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/**
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* @brief OLED显示数字（十六进制，正数）
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* @param Line 起始行位置，范围：1~4
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* @param Column 起始列位置，范围：1~16
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* @param Number 要显示的数字，范围：0~0xFFFFFFFF
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* @param Length 要显示数字的长度，范围：1~8
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* @retval 无
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*/
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void OLED_ShowHexNum(uint8_t Line, uint8_t Column, uint32_t Number, uint8_t Length)
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{
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uint8_t i, SingleNumber;
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for (i = 0; i < Length; i++)
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{
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SingleNumber = Number / OLED_Pow(16, Length - i - 1) % 16;
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if (SingleNumber < 10)
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{
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OLED_ShowChar(Line, Column + i, SingleNumber + '0');
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}
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else
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{
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OLED_ShowChar(Line, Column + i, SingleNumber - 10 + 'A');
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}
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}
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}
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/**
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* @brief OLED显示数字（二进制，正数）
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* @param Line 起始行位置，范围：1~4
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* @param Column 起始列位置，范围：1~16
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* @param Number 要显示的数字，范围：0~1111 1111 1111 1111
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* @param Length 要显示数字的长度，范围：1~16
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* @retval 无
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*/
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void OLED_ShowBinNum(uint8_t Line, uint8_t Column, uint32_t Number, uint8_t Length)
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{
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uint8_t i;
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for (i = 0; i < Length; i++)
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{
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OLED_ShowChar(Line, Column + i, Number / OLED_Pow(2, Length - i - 1) % 2 + '0');
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}
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}
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/**
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* @brief OLED初始化
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* @param 无
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* @retval 无
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*/
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void OLED_Init(void)
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{
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uint32_t i, j;
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for (i = 0; i < 1000; i++) //上电延时
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{
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for (j = 0; j < 1000; j++);
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}
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OLED_I2C_Init(); //端口初始化
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OLED_WriteCommand(0xAE); //关闭显示
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OLED_WriteCommand(0xD5); //设置显示时钟分频比/振荡器频率
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OLED_WriteCommand(0x80);
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OLED_WriteCommand(0xA8); //设置多路复用率
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OLED_WriteCommand(0x3F);
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OLED_WriteCommand(0xD3); //设置显示偏移
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OLED_WriteCommand(0x00);
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OLED_WriteCommand(0x40); //设置显示开始行
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OLED_WriteCommand(0xA1); //设置左右方向，0xA1正常 0xA0左右反置
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OLED_WriteCommand(0xC8); //设置上下方向，0xC8正常 0xC0上下反置
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OLED_WriteCommand(0xDA); //设置COM引脚硬件配置
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OLED_WriteCommand(0x12);
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OLED_WriteCommand(0x81); //设置对比度控制
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OLED_WriteCommand(0xCF);
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OLED_WriteCommand(0xD9); //设置预充电周期
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OLED_WriteCommand(0xF1);
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OLED_WriteCommand(0xDB); //设置VCOMH取消选择级别
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OLED_WriteCommand(0x30);
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OLED_WriteCommand(0xA4); //设置整个显示打开/关闭
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OLED_WriteCommand(0xA6); //设置正常/倒转显示
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OLED_WriteCommand(0x8D); //设置充电泵
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OLED_WriteCommand(0x14);
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OLED_WriteCommand(0xAF); //开启显示
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OLED_Clear(); //OLED清屏
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}
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