【STM32H5开发板】使用SPI点亮OLED

meiyao

【STM32H5开发板】使用SPI点亮OLED [复制链接]

开发平台：KEIL

开发板：STM32H5

目地：本篇是利用STM32H5点亮OLED，显示相关信息hello world

1、原理图：

OLED原理图：

MCU脚位：

2.使用的引脚：

PB3--CS

PB4--DC

PB5--MOSI

PB9--CLK 

H5开发板与OLED连接方式

3、SPI连接位置

4、核心代码：

引脚定义：
#define OLED_CS_Clr()  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_3,GPIO_PIN_RESET);
#define OLED_CS_Set()  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_3,GPIO_PIN_SET);

#define OLED_DC_Clr()  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_4,GPIO_PIN_RESET);
#define OLED_DC_Set() 	HAL_GPIO_WritePin(GPIOB, GPIO_PIN_4,GPIO_PIN_SET);
 					   
#define OLED_RST_Clr()  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5,GPIO_PIN_RESET);
#define OLED_RST_Set()  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5,GPIO_PIN_SET);

#define OLED_MOSI_Clr()  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_8,GPIO_PIN_RESET);
#define OLED_MOSI_Set()  HAL_GPIO_WritePin(GPIOB, GPIO_PIN_8,GPIO_PIN_SET);

#define OLED_CLK_Clr()   HAL_GPIO_WritePin(GPIOB, GPIO_PIN_9,GPIO_PIN_RESET);
#define OLED_CLK_Set()   HAL_GPIO_WritePin(GPIOB, GPIO_PIN_9,GPIO_PIN_SET);


初始化：
	__GPIOB_CLK_ENABLE();
	GPIO_InitTypeDef  GPIO_InitStruct;
	GPIO_InitStruct.Mode  = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull  = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;

  GPIO_InitStruct.Pin = GPIO_PIN_3|GPIO_PIN_4|GPIO_PIN_5|GPIO_PIN_8|GPIO_PIN_9;
  HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);

/**************???SSD1306*****************/	
	OLED_WR_Byte(0xAE,OLED_CMD); /*display off*/
	OLED_WR_Byte(0x00,OLED_CMD); /*set lower column address*/
	OLED_WR_Byte(0x10,OLED_CMD); /*set higher column address*/
	OLED_WR_Byte(0x40,OLED_CMD); /*set display start line*/ 
	OLED_WR_Byte(0xB0,OLED_CMD); /*set page address*/
	OLED_WR_Byte(0x81,OLED_CMD); /*contract control*/ 
	OLED_WR_Byte(0xFF,OLED_CMD); /*128*/
	OLED_WR_Byte(0xA1,OLED_CMD); /*set segment remap*/ 
	OLED_WR_Byte(0xA6,OLED_CMD); /*normal / reverse*/
	OLED_WR_Byte(0xA8,OLED_CMD); /*multiplex ratio*/ 
	OLED_WR_Byte(0x3F,OLED_CMD); /*duty = 1/64*/
	OLED_WR_Byte(0xC8,OLED_CMD); /*Com scan direction*/
	OLED_WR_Byte(0xD3,OLED_CMD); /*set display offset*/ 
	OLED_WR_Byte(0x00,OLED_CMD);
	OLED_WR_Byte(0xD5,OLED_CMD); /*set osc division*/ 
	OLED_WR_Byte(0x80,OLED_CMD);
	OLED_WR_Byte(0xD9,OLED_CMD); /*set pre-charge period*/ 
	OLED_WR_Byte(0XF1,OLED_CMD);
	OLED_WR_Byte(0xDA,OLED_CMD); /*set COM pins*/ 
	OLED_WR_Byte(0x12,OLED_CMD);
	OLED_WR_Byte(0xDB,OLED_CMD); /*set vcomh*/ 
	OLED_WR_Byte(0x30,OLED_CMD);
	OLED_WR_Byte(0x8D,OLED_CMD); /*set charge pump disable*/ 
	OLED_WR_Byte(0x14,OLED_CMD);
	OLED_WR_Byte(0xAF,OLED_CMD); /*display ON*/


  hspi1.Instance = SPI1;
  hspi1.Init.Mode = SPI_MODE_MASTER;
  hspi1.Init.Direction = SPI_DIRECTION_2LINES;
  hspi1.Init.DataSize = SPI_DATASIZE_8BIT;
  hspi1.Init.CLKPolarity = SPI_POLARITY_LOW;
  hspi1.Init.CLKPhase = SPI_PHASE_1EDGE;
  hspi1.Init.NSS = SPI_NSS_SOFT;
  hspi1.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_256;
  hspi1.Init.FirstBit = SPI_FIRSTBIT_MSB;
  hspi1.Init.TIMode = SPI_TIMODE_DISABLE;
  hspi1.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
  hspi1.Init.CRCPolynomial = 0x7;
  hspi1.Init.NSSPMode = SPI_NSS_PULSE_DISABLE;
  hspi1.Init.NSSPolarity = SPI_NSS_POLARITY_LOW;
  hspi1.Init.FifoThreshold = SPI_FIFO_THRESHOLD_01DATA;
  hspi1.Init.MasterSSIdleness = SPI_MASTER_SS_IDLENESS_00CYCLE;
  hspi1.Init.MasterInterDataIdleness = SPI_MASTER_INTERDATA_IDLENESS_00CYCLE;
  hspi1.Init.MasterReceiverAutoSusp = SPI_MASTER_RX_AUTOSUSP_DISABLE;
  hspi1.Init.MasterKeepIOState = SPI_MASTER_KEEP_IO_STATE_DISABLE;
  hspi1.Init.IOSwap = SPI_IO_SWAP_DISABLE;
  hspi1.Init.ReadyMasterManagement = SPI_RDY_MASTER_MANAGEMENT_INTERNALLY;
  hspi1.Init.ReadyPolarity = SPI_RDY_POLARITY_HIGH;
  if (HAL_SPI_Init(&hspi1) != HAL_OK)
  {
    Error_Handler();
  }

显示


	if(Char_Size == 16)
  {
	  csize = Char_Size/2;
	}
  else if(Char_Size == 8)
  {
	  csize = Char_Size/2+2;
	}
	else
	{
		return;
	}
	while (chr[j]!='\0')
	{		
		GUI_ShowChar(x,y,chr[j],Char_Size,mode);
		x+=csize;
		if(x>120)
		{
			x=0;
			y+=Char_Size/8;
		}
		j++;
	}

		GUI_ShowString(0,0,(unsigned char*)"6x8:hello word",8,1);

5.视频：

8cd55756a6cee822c7536c8034b530d1

 

火辣西米秀

用SPI点亮OLED 了

 

freebsder

那一串OLED_WR_Byte好魔幻，器件手册里也没说为啥要这样设置。

meiyao

火辣西米秀 发表于 2023-6-23 20:46 用SPI点亮OLED 了  

是的呢