一、功能简介
本项目使用STM32F103C8T6单片机控制器，使IIC OLED液晶等。 主要功能： 系统运行后，OLED显示动画界面。
二、软件设计 /*作者：嗨小易（QQ：3443792007）*/void IIC_GPIO_Config(void){GPIO_InitTypeDef GPIO_InitStructure;RCC_APB2PeriphClockCmd(OLED_SCL_RCC|OLED_SDA_RCC, ENABLE);/* 打开GPIO时钟 */GPIO_InitStructure.GPIO_Pin = OLED_SCL_PIN;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_OD; //开漏输出GPIO_Init(OLED_SCL_GPIO_PORT, &GPIO_InitStructure);GPIO_InitStructure.GPIO_Pin = OLED_SDA_PIN;GPIO_Init(OLED_SDA_GPIO_PORT, &GPIO_InitStructure);//给一个停止信号, 复位IIC总线上的所有设备到待机模式IIC_Stop();}//初始化SSD1306void OLED_Init(void){HZ=GB16_NUM();delay_ms(100);IIC_GPIO_Config();Write_IIC_Command(0xAE); //--display offWrite_IIC_Command(0x00); //---set low column addressWrite_IIC_Command(0x10); //---set high column addressWrite_IIC_Command(0x40); //--set start line addressWrite_IIC_Command(0xB0); //--set page addressWrite_IIC_Command(0x81); // contract controlWrite_IIC_Command(0xFF); //--128Write_IIC_Command(0xA1); //set segment remapWrite_IIC_Command(0xA6); //--normal / reverseWrite_IIC_Command(0xA8); //--set multiplex ratio(1 to 64)Write_IIC_Command(0x3F); //--1/32 dutyWrite_IIC_Command(0xC8); //Com scan directionWrite_IIC_Command(0xD3); //-set display offsetWrite_IIC_Command(0x00); //Write_IIC_Command(0xD5); //set osc divisionWrite_IIC_Command(0x80); //Write_IIC_Command(0xD8); //set area color mode offWrite_IIC_Command(0x05); //Write_IIC_Command(0xD9); //Set Pre-Charge PeriodWrite_IIC_Command(0xF1); //Write_IIC_Command(0xDA); //set com pin configuartionWrite_IIC_Command(0x12); //Write_IIC_Command(0xDB); //set VcomhWrite_IIC_Command(0x30); //Write_IIC_Command(0x8D); //set charge pump enableWrite_IIC_Command(0x14); //Write_IIC_Command(0xAF); //--turn on oled panel}static void IIC_Delay(void){uint8_t i=3;while(i--);}/***************************************************函 数 名: IIC_Start*功能说明: CPU发起IIC总线启动信号*形 参：无*返 回 值: 无***************************************************/void IIC_Start(void){/* 当SCL高电平时，SDA出现一个下跳沿表示IIC总线启动信号 */OLED_SDA=1;OLED_SCL=1;IIC_Delay();OLED_SDA=0;IIC_Delay();OLED_SCL=0;IIC_Delay();}/**************************************************函 数 名: IIC_Stop*功能说明: CPU发起IIC总线停止信号*形 参：无*返 回 值: 无*************************************************/void IIC_Stop(void){/* 当SCL高电平时，SDA出现一个上跳沿表示IIC总线停止信号 */OLED_SDA=0;OLED_SCL=1;IIC_Delay();OLED_SDA=1;}/****************************************************************************函 数 名: IIC_WaitAck*功能说明: CPU产生一个时钟，并读取器件的ACK应答信号*形 参：无*返 回 值: 返回0表示正确应答，1表示无器件响应****************************************************************************///uint8_t IIC_WaitAck(void)void IIC_WaitAck(void){OLED_SDA=1;/* CPU释放SDA总线 */IIC_Delay();OLED_SCL=1;/* CPU驱动SCL = 1, 此时器件会返回ACK应答 */IIC_Delay();OLED_SCL=0;IIC_Delay();}//向IIC总线写数据void Write_IIC_Byte(uint8_t _ucByte){uint8_t i;/* 先发送字节的高位bit7 */for (i = 0; i < 8; i++){if (_ucByte & 0x80){OLED_SDA=1;}else{OLED_SDA=0;}IIC_Delay();OLED_SCL=1;IIC_Delay();OLED_SCL=0;_ucByte <<= 1;/* 左移一个bit */}}//写命令void Write_IIC_Command(u8 IIC_Command){IIC_Start();Write_IIC_Byte(OLED_ADDRESS);//OLED地址IIC_WaitAck();Write_IIC_Byte(0x00);//寄存器地址IIC_WaitAck();Write_IIC_Byte(IIC_Command);IIC_WaitAck();IIC_Stop();}//写数据void Write_IIC_Data(u8 IIC_Data){IIC_Start();Write_IIC_Byte(OLED_ADDRESS);//OLED地址IIC_WaitAck();Write_IIC_Byte(0x40);//寄存器地址IIC_WaitAck();Write_IIC_Byte(IIC_Data);IIC_WaitAck();IIC_Stop();}//将OLED从休眠中唤醒void OLED_ON(void){Write_IIC_Command(0X8D); //设置电荷泵Write_IIC_Command(0X14); //开启电荷泵Write_IIC_Command(0XAF); //OLED唤醒}//让OLED休眠 -- 休眠模式下,OLED功耗不到10uAvoid OLED_OFF(void){Write_IIC_Command(0X8D); //设置电荷泵Write_IIC_Command(0X10); //关闭电荷泵Write_IIC_Command(0XAE); //OLED休眠}//OLED全屏填充void OLED_Fill(u8 fill_Data){u8 m,n;for(m=0;m<8;m++){Write_IIC_Command(0xb0+m);//page0-page1Write_IIC_Command(0x00);//low column start addressWrite_IIC_Command(0x10);//high column start addressfor(n=0;n<130;n++){Write_IIC_Data(fill_Data);}}}//设置起始点坐标void OLED_Set_Pos(u8 x, u8 y) { Write_IIC_Command(0xb0+y);Write_IIC_Command((((x+2)&0xf0)>>4)|0x10);Write_IIC_Command(((x+2)&0x0f)|0x01);}//更新显存到OLEDvoid OLED_Refresh(void){u8 i,n;for(i=0;i<8;i++){Write_IIC_Command(0xb0+i); //设置行起始地址Write_IIC_Command(0x00); //设置低列起始地址Write_IIC_Command(0x10); //设置高列起始地址IIC_Start();Write_IIC_Byte(0x78);IIC_WaitAck();Write_IIC_Byte(0x40);IIC_WaitAck();for(n=0;n<130;n++){Write_IIC_Byte(OLED_GRAM[n][i]);IIC_WaitAck();}IIC_Stop();}}//清屏void OLED_Clear(void){OLED_Fill(0x00);}//在指定位置显示一个字符,包括部分字符//x:0~127//y:0~63void OLED_ShowChar(u8 x, u8 y, u8 chr){u8 c = 0, i = 0;c = chr - ' '; //得到偏移后的值if(x > 130 - 1){x = 0;y = y + 2;}OLED_Set_Pos(x, y);for(i = 0; i < 8; i++)Write_IIC_Data(zf[c * 16 + i]);OLED_Set_Pos(x, y + 1);for(i = 0; i < 8; i++)Write_IIC_Data(zf[c * 16 + i + 8]);}//m^n函数u32 oled_pow(u8 m, u8 n){u32 result = 1;while(n--)result *= m;return result;}//显示个数字//x,y :起点坐标//len :数字的位数//num:数值(0~4294967295);//mode: 为1:显示0 为0:显示空格void OLED_ShowNum(u8 x, u8 y, u32 num, u8 len,u8 mode){u8 t, temp;u8 enshow=0;for(t = 0; t < len; t++){temp = (num / oled_pow(10, len - t - 1)) % 10;if(enshow==0&&t<(len-1)){if(temp==0){if(mode)OLED_ShowChar(x + 8*t, y, '0');elseOLED_ShowChar(x + 8*t, y, ' ');continue;}else enshow=1; }OLED_ShowChar(x + 8*t, y, temp + '0');}}//显示中英文字符void OLED_ShowCH(u8 x, u8 y,u8 *chs){u32 i=0;u32 j;char* m;while (*chs != '\0'){if (*chs > 0xa0)//汉字内码都是大于0xa0{for (i=0 ;i < HZ;i++){if(x>112){x=0;y=y+2;}if ((*chs == hz_index[i*2]) && (*(chs+1) == hz_index[i*2+1])){OLED_Set_Pos(x, y);for(j=0;j<16;j++)Write_IIC_Data(hz[i*32+j]);OLED_Set_Pos(x,y+1);for(j=0;j<16;j++)Write_IIC_Data(hz[i*32+j+16]);x +=16;break;}}chs+=2;}else{if(x>122){x=0;y=y+2;}m=strchr(zf_index,*chs);if (m!=NULL){OLED_Set_Pos(x, y);for(j = 0; j < 8; j++)Write_IIC_Data(zf[((u8)*m-' ') * 16 + j]);OLED_Set_Pos(x, y + 1);for(j = 0; j < 8; j++)Write_IIC_Data(zf[((u8)*m-' ') * 16 + j + 8]);x += 8;}chs++;}}}// x0,y0 -- 起始点坐标(x0:0~127, y0:0~7); x1,y1 -- 起点对角线(结束点)的坐标(x1:1~128,y1:1~8)void OLED_DrawBMP(u8 x0,u8 y0,u8 x1,u8 y1,u8 BMP[]){u16 j=0;u8 x,y;if(y1%8==0)y = y1/8;elsey = y1/8 + 1;for(y=y0;y<y1;y++){OLED_Set_Pos(x0,y);for(x=x0;x<x1;x++){Write_IIC_Data(BMP[j++]);}}}//清除最后两行文字void ShowTrashNoPeople(void){u8 m,n;//m起始行数for(m=0;m<8;m++){Write_IIC_Command(0xb0+m);//page0-page1Write_IIC_Command(0x00);//low column start addressWrite_IIC_Command(0x10);//high column start addressfor(n=0;n<130;n++){Write_IIC_Data(0x00);}}}
三、实验现象
B站演示视频：https://space.bilibili.com/444388619
联系作者
专注于51单片机、STM32、国产32、DSP、Proteus、ardunio、ESP32、物联网软件开发，PCB设计，视频分享，技术交流。
