自贡网站开发公司,外贸公司 网站,深圳政务服务网官网首页,百度官网首页登陆目录 1.OLED介绍
2.OLED如何显示一个点#xff1f;
内存管理编辑编辑
页地址模式
水平地址模式编辑
垂直地址模式
编辑
3.OLED显示图片
用到的库函数#xff1a;
向OLED写命令的封装#xff1a;
显示图片代码示例#xff1a; 1.OLED介绍
OLED是有机发光…目录 1.OLED介绍
2.OLED如何显示一个点
内存管理编辑编辑
页地址模式
水平地址模式编辑
垂直地址模式
编辑
3.OLED显示图片
用到的库函数
向OLED写命令的封装
显示图片代码示例 1.OLED介绍
OLED是有机发光管(Organic Light-Emitting Diode)的缩写是一种新兴的平面显示屏技术。与传统的LCD显示屏相比OLED显示屏具有自发光、广视角、高对比度、低功耗、快速响应和可用于绕曲性面板等优点。OLED屏幕可以自发光所以不需要背光灯使得屏幕更薄且显示效果更优。常见的OLED屏幕有蓝色、黄色、白色等几种。一个常见的OLED屏幕的大小为0.96寸像素点为128*64所以被称为0.96 OLED屏或者12864屏。
2.OLED如何显示一个点
有三种分别位页地址模式水平地址模式和垂直地址模式可以通过一下表格进行配置
内存管理
页地址模式 水平地址模式
垂直地址模式 列地址选择
如果写入0x08b00001000会显示什么呢 一个字节负责一个Page的一列显示
3.OLED显示图片
用到的库函数
HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c,
uint16_t DevAddress,
uint16_t MemAddress,
uint16_t MemAddSize,
uint8_t *pData,
uint16_t Size,
uint32_t Timeout) 参数一I2C_HandleTypeDef *hi2cI2C设备句柄参数二uint16_t DevAddress目标器件的地址七位地址必须左对齐参数三uint16_t MemAddress目标器件的目标寄存器地址参数四uint16_t MemAddSize目标器件内部寄存器地址数据长度参数五uint8_t *pData待写的数据首地址参数六uint16_t Size待写的数据长度参数七uint32_t Timeout超时时间返回值HAL_StatusTypeDefHAL状态OKbusyERRORTIMEOUT
向OLED写命令的封装
void Oled_Write_Cmd(uint8_t dataCmd)
{HAL_I2C_Mem_Write(hi2c1, 0x78, 0x00, I2C_MEMADD_SIZE_8BIT,dataCmd, 1, 0xff);
}
向OLED写数据的封装
void Oled_Write_Data(uint8_t dataData)
{HAL_I2C_Mem_Write(hi2c1, 0x78, 0x40, I2C_MEMADD_SIZE_8BIT,dataData, 1, 0xff);
}
接线 SCL -- PB6 SDA -- PB7
显示图片代码示例
#include main.h
#include i2c.h
#include gpio.hvoid Oled_Write_Cmd(uint8_t dataCmd)
{HAL_I2C_Mem_Write(hi2c1, 0x78, 0x00, I2C_MEMADD_SIZE_8BIT,dataCmd, 1, 0xff);
}void Oled_Write_Data(uint8_t dataData)
{HAL_I2C_Mem_Write(hi2c1, 0x78, 0x40, I2C_MEMADD_SIZE_8BIT,dataData, 1, 0xff);
}void Oled_Init(void){Oled_Write_Cmd(0xAE);//--display offOled_Write_Cmd(0x00);//---set low column addressOled_Write_Cmd(0x10);//---set high column addressOled_Write_Cmd(0x40);//--set start line address Oled_Write_Cmd(0xB0);//--set page addressOled_Write_Cmd(0x81); // contract controlOled_Write_Cmd(0xFF);//--128 Oled_Write_Cmd(0xA1);//set segment remap Oled_Write_Cmd(0xA6);//--normal / reverseOled_Write_Cmd(0xA8);//--set multiplex ratio(1 to 64)Oled_Write_Cmd(0x3F);//--1/32 dutyOled_Write_Cmd(0xC8);//Com scan directionOled_Write_Cmd(0xD3);//-set display offsetOled_Write_Cmd(0x00);//Oled_Write_Cmd(0xD5);//set osc divisionOled_Write_Cmd(0x80);//Oled_Write_Cmd(0xD8);//set area color mode offOled_Write_Cmd(0x05);//Oled_Write_Cmd(0xD9);//Set Pre-Charge PeriodOled_Write_Cmd(0xF1);//Oled_Write_Cmd(0xDA);//set com pin configuartionOled_Write_Cmd(0x12);//Oled_Write_Cmd(0xDB);//set VcomhOled_Write_Cmd(0x30);//Oled_Write_Cmd(0x8D);//set charge pump enableOled_Write_Cmd(0x14);//Oled_Write_Cmd(0xAF);//--turn on oled panel
}void Oled_Screen_Clear(void){char i,n;Oled_Write_Cmd (0x20); //set memory addressing modeOled_Write_Cmd (0x02); //page addressing modefor(i0;i8;i){Oled_Write_Cmd(0xb0i); Oled_Write_Cmd(0x00); Oled_Write_Cmd(0x10); for(n0;n128;n)Oled_Write_Data(0x00); }
}//用取模软件生成
unsigned char bmpImager[] {/*-- 调入了一幅图像D:\无标题.bmp --*/
/*-- 宽度x高度128x64 --128x8x8*/
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0x04,0x04,0x06,0x02,0x01,0x01,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0x60,0xC0,0x80,0x80,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
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0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,};void Oled_Show_Image(unsigned char *image)
{unsigned char i; unsigned int j;for(i0;i8;i){Oled_Write_Cmd(0xB0 i);//page0--page7//每个page从0列Oled_Write_Cmd(0x00);Oled_Write_Cmd(0x10);//0到127列依次写入0每写入数据列地址自动偏移for(j 128 * i; j(128 * (i1));j){Oled_Write_Data(image[j]);}}
}int main(void)
{/* USER CODE BEGIN 1 *//* USER CODE END 1 *//* MCU Configuration--------------------------------------------------------*//* Reset of all peripherals, Initializes the Flash interface and the Systick. */HAL_Init();/* USER CODE BEGIN Init *//* USER CODE END Init *//* Configure the system clock */SystemClock_Config();/* USER CODE BEGIN SysInit *//* USER CODE END SysInit *//* Initialize all configured peripherals */MX_GPIO_Init();MX_I2C1_Init();/* USER CODE BEGIN 2 *///1. OLED初始化Oled_Init();//2. 选择一个位置//2.1 确认页寻址模式Oled_Write_Cmd(0x20);Oled_Write_Cmd(0x02);Oled_Screen_Clear();Oled_Show_Image(bmpImager);/* USER CODE END 2 *//* Infinite loop *//* USER CODE BEGIN WHILE */while (1){/* USER CODE END WHILE *//* USER CODE BEGIN 3 */}/* USER CODE END 3 */
}
