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@caa45040(caa45040)

小マイコンSTM32F303でST7789V2にグラフィックを表示する。(ラインバッファー)

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目的
カラー表示

o_cop771.jpg

o_cop772.jpg

main.cpp



//OLED_SSD1306_BITMAP_DV67_linebuf_SPI_89_UNO


//ヘッダーファイル
#include <Adafruit_GFX.h>
#include "hh.h"

//定義
#define SCREEN_WIDTH 240 // OLED display width, in pixels
#define SCREEN_HEIGHT 240 // OLED display height, in pixels stm32f767
NA_ST7735_P display(SCREEN_WIDTH, SCREEN_HEIGHT);


// ビットマップデータ
uint8_t databytes[8] =
{

  0b01100110,
  0b10101111,
  0b10111111,
  0b11011111,

  0b01111110,
  0b01111110,
  0b00111100,
  0b00011000

};


//初期化
void setup() {

  //ディスプレイの初期化
  if(display.begin() == false) {while(1){}}

  //表示方向
  display.setRotation(0);

  // 画面表示をクリア
  display.clearDisplay();

  //ビットマップの表示
  display.drawBitmap(3, 3, databytes, 8, 8,  RED);

  // テキストサイズを設定
  display.setTextSize(3);
  // テキスト色を設定
  display.setTextColor(WHITE);
  //display.setTextColor(RED);
  // テキストの開始位置を設定
  display.setCursor(20, 10);

  // 1行目に46を表示
  display.println("linebuf");

  // 画面の左側に長方形(塗りつぶしなし)を描画
  // display.drawRect(左上x, 左上y, 幅, 高さ, 線の色)
  display.drawRect(0, 0, 239, 239, WHITE);

  // 描画バッファの内容を画面に表示
  display.display();

}//setup


//メインループ
void loop() {
}//loop

hh.cpp

hh.cpp



//インクルド
#include "hh.h"
#include <Adafruit_GFX.h>
#include <SPI.h>

//定義
//#define MAX_D_ID (2000)
#define MAX_D_ID (2200) //f303 8.8kbyte
#define NA_ST7735_P_swap(a, b)                                                     \
  (((a) ^= (b)), ((b) ^= (a)), ((a) ^= (b))) ///< No-temp-var swap operation
//GPIOの設定1　開始
#define GPIO_D10(s) digitalWrite(10,s)
#define GPIO_D9(s)  digitalWrite(9,s)
#define GPIO_D8(s)  digitalWrite(8,s)
#define GPIO_RESET(y)  GPIO_D9(y)


void NA_ST7735_P::GPIO_8BIT(uint8_t s)
{
  SPI.transfer(s);
} //GPIO_8BIT


//コマンドの書き込み
void NA_ST7735_P::LCD_Write_CMD(uint8_t a)
{

  GPIO_D10(0);//CS=0; 12
  GPIO_D8(0); //A0=0; 9
  GPIO_8BIT(a);//P1=a; data SPI SPI
  GPIO_D10(1);//CS=1; 12

} //LCD_Write_CMD


//データ書き込み
void NA_ST7735_P::LCD_Write_Data(uint8_t a)
{

  GPIO_D10(0);//CS=0; 12
  GPIO_D8(1); //A0=1; 9
  GPIO_8BIT(a);//P1=a; data SPI SPI
  GPIO_D10(1);//CS=1; 12

} //LCD_Write_Data


//液晶の初期化処理
void NA_ST7735_P::TXDT144TF_ST7735S_Init(void)
{

  //----------  ST7735S Reset Sequence  --------//

  GPIO_D9(1);//LCD_RESET=1;
  delay(1); //Delay 1ms

  GPIO_D9(0);//LCD_RESET=0;
  delay(1); //Delay 1ms

  GPIO_D9(1);//LCD_RESET=1;
  delay(120); //Delay 120ms

  LCD_Write_CMD(0x01);//SOFTWARE RESET
  delay(50);

  LCD_Write_CMD(0x01);//SOFTWARE RESET
  delay(50);

  LCD_Write_CMD(0x11);//SLEEP OUT
  delay(200);

  LCD_Write_CMD(0x29);//display on
  delay(100);

  LCD_Write_CMD(0x36);//RGB-RGR format
  LCD_Write_Data(0x00);//RGB mode
  delay(100);

  LCD_Write_CMD(0x3a);//Interface pixel format
  LCD_Write_Data(0x55);//16bit mode
  delay(100);

  LCD_Write_CMD(0x21); //Reverse
  delay(100);

} //TXDT144TF_ST7735S_Init


NA_ST7735_P::NA_ST7735_P(uint8_t w, uint8_t h)
  : Adafruit_GFX(w, h), buffer(NULL)

{
}


//バッファのクリア
NA_ST7735_P::~NA_ST7735_P(void) {
  if (buffer) {
    free(buffer);
    buffer = NULL;
  }
}//~NA_ST7735_P


//初期処理
bool NA_ST7735_P::begin(void) {

  if ((!buffer) && !(buffer = (uint8_t *)malloc(MAX_D_ID * 4)   ))
    return false;

  //バッファーのクリア
  clearDisplay();

  //ポートのモード設定
  //アウトプットモード
  pinMode(10, OUTPUT);
  pinMode(9, OUTPUT);
  pinMode(8, OUTPUT);


  //SPIの開始
  SPI.begin();
  //ビットの並び
  SPI.setBitOrder(MSBFIRST);   //桁大きい順
  //SPIの速度
  SPI.setClockDivider(SPI_CLOCK_DIV8);  // 2Mhz
  //SPIクロックのモード
  SPI.setDataMode(SPI_MODE0);

/*
  //DEBUG
  //#define s60() for(ii=0;ii<60;ii++)delay(1000);
  #define s60() delay(1000);
  //0
  SPI.transfer(0x00);//DW(SS,HIGH);DW(SS,LOW);
  SPI.transfer(0x00);//DW(SS,HIGH);DW(SS,LOW);
  s60();
  //1
  SPI.transfer(0x00);//DW(SS,HIGH);DW(SS,LOW);
  SPI.transfer(0x55);//DW(SS,HIGH);DW(SS,LOW);
  s60();
*/

/*
  // SPIの初期化
  //SPI.beginTransaction( SPISettings( 32000000, MSBFIRST, SPI_MODE0) );
  //SPI.beginTransaction( SPISettings( 16000000, MSBFIRST, SPI_MODE0) );
  SPI.beginTransaction( SPISettings( 8000000, MSBFIRST, SPI_MODE0) );
  //SPI.beginTransaction( SPISettings( 4000000, MSBFIRST, SPI_MODE0) );
  //SPI.beginTransaction( SPISettings( 2000000, MSBFIRST, SPI_MODE0) );
  //SPI.beginTransaction( SPISettings( 1000000, MSBFIRST, SPI_MODE0) );
  SPI.begin(); // 11 12 13
*/

  //ポートの初期化
  GPIO_D10(1);//CS=1
  GPIO_D9(1);//RESET=1
  GPIO_D8(0);//RS=0

  delay(500); //0.5秒待つ

  //液晶の初期化処理
  TXDT144TF_ST7735S_Init();

  //画面の書き込み開始
  //display();

  return true; // Success
}//begin


//点の表示
void NA_ST7735_P::drawPixel(int16_t x, int16_t y, uint16_t color) {
  if ((x >= 0) && (x < width()) && (y >= 0) && (y < height())) {
    // Pixel is in-bounds. Rotate coordinates if needed.
    switch (getRotation()) {
      case 1:
        NA_ST7735_P_swap(x, y);
        x = WIDTH - x - 1;
        break;
      case 2:
        x = WIDTH - x - 1;
        y = HEIGHT - y - 1;
        break;
      case 3:
        NA_ST7735_P_swap(x, y);
        y = HEIGHT - y - 1;
        break;
    }//end switch


    //ドットアイテムのカラーの設定
    //printf("%d(%d,%d)=%x \n",D_ID,x,y,color);
    buffer[ D_ID * 4 + 0] = y;
    buffer[ D_ID * 4 + 1] = x;
    buffer[ D_ID * 4 + 2] = (color >> 8) & 0xff;
    buffer[ D_ID * 4 + 3] =  color       & 0xff;

    if (D_ID < (MAX_D_ID - 2)) {
      D_ID++;
    }//end if


  }//if
}//drawPixel

uint16_t NA_ST7735_P::getD_ID(void) {
  return D_ID;
}


//バッファのクリア
void NA_ST7735_P::clearDisplay(void) {
  memset(buffer, 0xff, MAX_D_ID * 4 );
  D_ID=0;
}


bool NA_ST7735_P::getPixel(int16_t x, int16_t y) {
  if ((x >= 0) && (x < width()) && (y >= 0) && (y < height())) {
    // Pixel is in-bounds. Rotate coordinates if needed.
    switch (getRotation()) {
      case 1:
        NA_ST7735_P_swap(x, y);
        x = WIDTH - x - 1;
        break;
      case 2:
        x = WIDTH - x - 1;
        y = HEIGHT - y - 1;
        break;
      case 3:
        NA_ST7735_P_swap(x, y);
        y = HEIGHT - y - 1;
        break;
    }
    //return (buffer[ y*240 + x ] );
    return ( 0xff );
  }
  return false; // Pixel out of bounds
}


uint8_t *NA_ST7735_P::getBuffer(void) {
  return buffer;
}


//画面のリフレッシュ
void NA_ST7735_P::display(void) {

  //画面の書き込み開始
  LCD_Write_CMD(0x2C); //memory write

  //画面の表示
  int     kk;
  int     fy,fx,fh,fl;
  uint8_t linebuf[WIDTH * 2];

  for (int y = 0; y < HEIGHT; y++) {

    // y
    //ラインバッファの初期化
    for (int ii = 0; ii < (WIDTH * 2); ii++) {
      linebuf[ii] = 0;
    }
    kk = 0;
    //無限ループ
    while (1) { //直線検索(全件検索)
      fy = buffer[kk * 4 + 0];
      //fx = buffer[kk*4 + 1];
      //fh = buffer[kk*4 + 2];
      //fl = buffer[kk*4 + 3];
      //printf("[%d]",fy);
      if (fy == 0xff ) {break;}

      if (fy == y) {

        //fy = buffer[kk*4 + 0];
        fx = buffer[kk * 4 + 1];
        fh = buffer[kk * 4 + 2];
        fl = buffer[kk * 4 + 3];

        linebuf[ fx * 2 + 0] = fh;
        linebuf[ fx * 2 + 1] = fl;

      }//end if fy

      kk++;

    }//while


    for (int x = 0; x < WIDTH; x++) {

      //---------------- 1バイト目
      LCD_Write_Data(linebuf[ x * 2 + 0]);

      //---------------- 2バイト目
      LCD_Write_Data(linebuf[ x * 2 + 1]);

    }//x
  }//y

}//display

hh.h

hh.h





#ifndef _NA_ST7735_P_H_
#define _NA_ST7735_P_H_

#include <Adafruit_GFX.h>

#ifndef NO_ADAFRUIT_NA_ST7735_P_COLOR_COMPATIBILITY
#define BLACK NA_ST7735_P_BLACK     ///< Draw 'off' pixels
#define WHITE NA_ST7735_P_WHITE     ///< Draw 'on' pixels
#define RED NA_ST7735_P_RED     ///< Draw 'on' pixels
#endif
/// fit into the SSD1306_ naming scheme
#define NA_ST7735_P_BLACK 0x0000   ///< Draw 'off' pixels
#define NA_ST7735_P_WHITE 0xffff   ///< Draw 'on' pixels
#define NA_ST7735_P_RED 0b1111100000000000 //red


class NA_ST7735_P : public Adafruit_GFX {
  public:

    NA_ST7735_P(uint8_t w, uint8_t h);

    ~NA_ST7735_P(void);

    bool begin(void);
    void display(void);
    void clearDisplay(void);
    void drawPixel(int16_t x, int16_t y, uint16_t color);
    bool getPixel(int16_t x, int16_t y);
    uint8_t *getBuffer(void);

    void GPIO_8BIT(uint8_t s);
    void LCD_Write_CMD(uint8_t ww);
    void LCD_Write_Data(uint8_t ii);
    void TXDT144TF_ST7735S_Init(void);

    uint16_t getD_ID(void);

  protected:


    uint8_t *buffer; ///< Buffer data used for display buffer. Allocated when
    ///< begin method is called.

    uint16_t D_ID = 0;

};

#endif // _NA_ST7735_P_H_
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