1
0

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?

[ランダム入力](棒グラフ)サウンドオシロスコープ(XIAO ESP32C6+SSD1306)

Last updated at Posted at 2025-04-30

いろいろ、注意

  • 過去ログを見てピョン
  • 白バック
  • メイン 範囲指定 0から任意まで

if( RE(dot8[3], x) ) {a = a | 0b00001000;}

結果

image_original(26).jpg

プログラム



//秋月のOLEDとアイテンドウのOLEDのアドレスは3C
//ssd1306_Sound_Oscilloscope_ch1_line_XIAO_ESP32C6_1


//ヘッダー
#include <Arduino.h>
#include <Wire.h>


//定義
#define MAX_PAGE (7)
#define MAX_COL (127)

#define COMMAND_MODE 0x80  // continuation bit is set!
#define DATA_MODE 0x40

#define SET_COLUMN_ADDRESS 0x21  // takes two bytes, start address and end address of display data RAM
#define SET_PAGE_ADDRESS 0x22    // takes two bytes, start address and end address of display data RAM

#define SET_MEMORY_ADDRESSING_MODE 0x20  // takes one byte as given above
#define HORIZONTAL_ADDRESSING_MODE 0x00

#define RE(A,X) ( (X >= 0) && (X <= A)  )


//I2Cに配列を転送する
void write_s(uint8_t *str1, uint8_t len1) {

  Wire.beginTransmission(0x3c);

  for (int ii = 0; ii < len1; ii++) {

    //一文字出力
    Wire.write(*str1++);

  }  //for

  Wire.endTransmission();

}  //write_s


//セットページアドレス
void setPageAddress(uint8_t start, uint8_t end) {
  uint8_t databytes[6] = { COMMAND_MODE, SET_PAGE_ADDRESS, COMMAND_MODE, start, COMMAND_MODE, end };
  write_s(databytes, 6);
}  //setPageAddress


//セットカラムアクセス
void setColumnAddress(uint8_t start, uint8_t end) {
  uint8_t databytes[6] = { COMMAND_MODE, SET_COLUMN_ADDRESS, COMMAND_MODE, start, COMMAND_MODE, end };
  write_s(databytes, 6);
}  //setColumnAddress


//セットメモリーアドレシングモード
void setMemoryAddressingMode() {
  uint8_t databytes[4] = { COMMAND_MODE, SET_MEMORY_ADDRESSING_MODE, COMMAND_MODE, HORIZONTAL_ADDRESSING_MODE };
  write_s(databytes, 4);
}  //setMemoryAddressingMode


//座標
int SO_X = 0;
int SO_Y = 0;

//8ドット分のデータ
char dot8[8];

//ブロックカウント
char b_count = 0;

int p_bk = 0;

//パターンRAMの内容を液晶に転送
void Sound_Oscilloscope(int L1, int L2) {

  if (SO_Y >= 64) {

    //範囲の設定 (OLED内部のx,yカウンターを初期化してホームポジション0,0に)
    setPageAddress(0, MAX_PAGE);   // all pages
    setColumnAddress(0, MAX_COL);  // all columns

    SO_Y = 0;

    //while(1){} //debug
  }  //end if

  dot8[b_count] = L1;

  b_count++;
  //b_count = 7; //debug
  if (b_count > 7) {

    int a;  //一時
    //データの配列の定義
    uint8_t databytes[2] = { DATA_MODE, 0x00 };
    for (int x = 0; x < 128; x++) {
      
      //dot8[0]=0;dot8[1]=8;dot8[2]=16;dot8[3]=32;
      //dot8[4]=0;dot8[5]=9;dot8[6]=16;dot8[7]=32;
      a = 0;
      if( RE(dot8[0], x) ) {a = a | 0b00000001;}
      if( RE(dot8[1], x) ) {a = a | 0b00000010;}
      if( RE(dot8[2], x) ) {a = a | 0b00000100;}
      if( RE(dot8[3], x) ) {a = a | 0b00001000;}
      if( RE(dot8[4], x) ) {a = a | 0b00010000;}
      if( RE(dot8[5], x) ) {a = a | 0b00100000;}
      if( RE(dot8[6], x) ) {a = a | 0b01000000;}
      if( RE(dot8[7], x) ) {a = a | 0b10000000;}
      
      //databytes[1] = a;
      databytes[1] = ~a;
      write_s(databytes, 2);

      b_count = 0;
    }  //for x

    p_bk = dot8[7];

  }  //end if b_count

  SO_Y++;

}  //Sound_Oscilloscope


//SSD1306の初期化
void display_begin(void) {

  //I2Cの初期化
  Wire.begin(D9, D10);  //XIAO ESP32C6+SSD1306
  //Wire.begin(D10,D9); //XIAO ESP32C6+GROVE
  delay(200);

  //SSD1306の初期化スペル(魔法)
  //0x80,0x8D,0x80,0x14,0x80,0xAF
  write_s((uint8_t *)"\200\215\200\024\200\257", 6);
  delay(100);

  //セットメモリーアドレシングモード (画面の終端に来たら画面の先頭に)
  setMemoryAddressingMode();

  //範囲の設定 (OLED内部のx,yカウンターを初期化してホームポジション0,0に)
  setPageAddress(0, MAX_PAGE);   // all pages
  setColumnAddress(0, MAX_COL);  // all columns

}  //display_begin


//初期化
void setup() {

  //SSD1306の初期化
  display_begin();

}  //setup


//メインループ
void loop() {

  static int L1 = 0;
  L1 = L1 + (random(16) - 8);
  if (L1 < 0) {
    L1 = 0;
  } else if (L1 > 127) {
    L1 = 127;
  }
  //L1 = 32;

  static int L2 = 0;
  //L2 = L2 + ( random(16) - 8 );
  //if( L2 < 0 ) { L2 = 0; } else if ( L2 > 64 ){ L2 = 64;}
  // //L1 = 32;


  Sound_Oscilloscope(L1, L2);  //画面の再表示

  //delay(1000); //1秒待つ debug

}  //loop



1
0
0

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
1
0

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?