0.96英寸OLED屏OLED_UpdateScreen()函数怎么写

这个函数的具体实现可能会因为所用的开发板、OLED屏幕型号等因素而有所不同，以下是一个示例：

void OLED_UpdateScreen(void)
{
  u8 i,n;

  for(i=0;i<8;i++)
  {  
    OLED_SetPos(i,0);      
    for(n=0;n<128;n++)OLED_WrDat(OLED_GRAM[i][n]);
  }
}

其中，`OLED_SetPos()` 函数用于设置 OLED 显示的位置，`OLED_WrDat()` 函数用于向 OLED 显示器写入数据。`OLED_GRAM` 数组用于存储 OLED 显示的像素数据，其大小为 8x128，表示 OLED 显示器共有 8 行，每行 128 个像素点。函数中的循环语句用于将 `OLED_GRAM` 中的数据逐行逐列地写入 OLED 显示器中，从而更新屏幕内容。

相关问题

0.96英寸OLED屏OLED_UpdateScreen()函数是啥

OLED_UpdateScreen()函数是用于将OLED屏幕上的图像数据更新到屏幕上的函数。在OLED显示屏上显示图像需要将图像数据写入到OLED屏幕的显存中，而OLED_UpdateScreen()函数则是将显存中的图像数据传输到OLED屏幕上进行显示。该函数通常由OLED显示屏控制器驱动程序调用，以更新显示屏上的图像。

0.96存oled屏幕写点函数

以下是一个基本的OLED屏幕控制函数，可以在STM32上使用：

#include "stm32f1xx_hal.h"
#include "fonts.h"

#define OLED_I2C_ADDRESS   0x78

#define OLED_WIDTH         128
#define OLED_HEIGHT        64

#define OLED_COMMAND       0x00
#define OLED_DATA          0x40

#define OLED_CONTROL_BYTE(mode, addr) ((mode << 7) | (addr))

#define OLED_SETCONTRAST   0x81
#define OLED_DISPLAY_ALLON 0xA5
#define OLED_DISPLAY_NORMAL 0xA6
#define OLED_DISPLAY_OFF   0xAE
#define OLED_DISPLAY_ON    0xAF
#define OLED_SETDISPLAYOFFSET 0xD3
#define OLED_SETCOMPINS    0xDA
#define OLED_SETVCOMDETECT 0xDB
#define OLED_SETDISPLAYCLOCKDIV 0xD5
#define OLED_SETPRECHARGE  0xD9
#define OLED_SETMULTIPLEX  0xA8
#define OLED_SETLOWCOLUMN  0x00
#define OLED_SETHIGHCOLUMN 0x10
#define OLED_SETSTARTLINE  0x40
#define OLED_MEMORYMODE    0x20
#define OLED_COLUMNADDR    0x21
#define OLED_PAGEADDR      0x22
#define OLED_COMSCANINC    0xC0
#define OLED_COMSCANDEC    0xC8
#define OLED_SEGREMAP      0xA0
#define OLED_CHARGEPUMP    0x8D

static I2C_HandleTypeDef hi2c1;

static void OLED_WriteCommand(uint8_t cmd)
{
  uint8_t control = OLED_CONTROL_BYTE(OLED_COMMAND, 0x00);
  HAL_I2C_Mem_Write(&hi2c1, OLED_I2C_ADDRESS, control, 1, &cmd, 1, 100);
}

static void OLED_WriteData(uint8_t* data, uint16_t len)
{
  uint8_t control = OLED_CONTROL_BYTE(OLED_DATA, 0x00);
  HAL_I2C_Mem_Write(&hi2c1, OLED_I2C_ADDRESS, control, 1, data, len, 100);
}

void OLED_Init(I2C_HandleTypeDef* i2c)
{
  hi2c1 = *i2c;

  HAL_Delay(100);

  OLED_WriteCommand(OLED_DISPLAY_OFF);

  OLED_WriteCommand(OLED_SETDISPLAYCLOCKDIV);
  OLED_WriteCommand(0x80);

  OLED_WriteCommand(OLED_SETMULTIPLEX);
  OLED_WriteCommand(OLED_HEIGHT - 1);

  OLED_WriteCommand(OLED_SETDISPLAYOFFSET);
  OLED_WriteCommand(0x00);

  OLED_WriteCommand(OLED_SETSTARTLINE | 0x00);

  OLED_WriteCommand(OLED_CHARGEPUMP);
  OLED_WriteCommand(0x14);

  OLED_WriteCommand(OLED_MEMORYMODE);
  OLED_WriteCommand(0x00);

  OLED_WriteCommand(OLED_SEGREMAP | 0x01);

  OLED_WriteCommand(OLED_COMSCANDEC);

  OLED_WriteCommand(OLED_SETCOMPINS);
  OLED_WriteCommand(0x12);

  OLED_WriteCommand(OLED_SETCONTRAST);
  OLED_WriteCommand(0xCF);

  OLED_WriteCommand(OLED_SETPRECHARGE);
  OLED_WriteCommand(0xF1);

  OLED_WriteCommand(OLED_SETVCOMDETECT);
  OLED_WriteCommand(0x40);

  OLED_WriteCommand(OLED_DISPLAY_ALLON);
  OLED_WriteCommand(OLED_DISPLAY_NORMAL);

  OLED_WriteCommand(OLED_DISPLAY_ON);
}

void OLED_FillScreen(uint8_t color)
{
  uint8_t data[128];
  uint8_t fill = color ? 0xFF : 0x00;
  for (int i = 0; i < 128; ++i)
  {
    data[i] = fill;
  }
  for (int i = 0; i < 8; ++i)
  {
    OLED_SetPosition(0, i);
    OLED_WriteData(data, 128);
  }
}

void OLED_SetPosition(uint8_t x, uint8_t y)
{
  OLED_WriteCommand(OLED_COLUMNADDR);
  OLED_WriteCommand(x);
  OLED_WriteCommand(OLED_WIDTH - 1);
  OLED_WriteCommand(OLED_PAGEADDR);
  OLED_WriteCommand(y);
  OLED_WriteCommand(OLED_HEIGHT / 8 - 1);
}

void OLED_DrawPixel(uint8_t x, uint8_t y, uint8_t color)
{
  OLED_SetPosition(x, y / 8);
  uint8_t data = 1 << (y % 8);
  if (color)
  {
    data = ~data;
  }
  OLED_WriteData(&data, 1);
}

void OLED_DrawChar(uint8_t x, uint8_t y, char c, FontDef_t* font, uint8_t color)
{
  uint32_t i, j;
  uint32_t height = font->FontHeight;
  uint32_t width = font->FontWidth;
  uint32_t offset = (c - font->StartChar) * height * (width / 8);
  const uint8_t* data = &font->FontTable[offset];

  for (i = 0; i < height; i++)
  {
    for (j = 0; j < width; j++)
    {
      if ((data[i * (width / 8) + j / 8] >> (j % 8)) & 0x01)
      {
        OLED_DrawPixel(x + j, y + i, color);
      }
    }
  }
}

void OLED_DrawString(uint8_t x, uint8_t y, const char* str, FontDef_t* font, uint8_t color)
{
  uint32_t i = 0;
  while (str[i] != '\0')
  {
    OLED_DrawChar(x, y, str[i], font, color);
    x += font->FontWidth;
    i++;
  }
}

注意：此代码仅供参考，可能需要根据具体的OLED屏幕型号和MCU平台进行适当修改。同时，还需要提供字体文件（fonts.h）以支持文字显示功能。