obniz/parts/Display/7SegmentLED/index.js

obniz sdk for javascript

class _7SegmentLED {
  constructor() {
    this.keys = [
      'a',
      'b',
      'c',
      'd',
      'e',
      'f',
      'g',
      'dp',
      'common',
      'commonType',
    ];
    this.requiredKeys = ['a', 'b', 'c', 'd', 'e', 'f', 'g'];

    this.digits = [
      0x3f,
      0x06,
      0x5b,
      0x4f,
      0x66,
      0x6d,
      0x7d,
      0x07,
      0x7f,
      0x6f,
      0x6f,
    ];

    this.displayIoNames = {
      a: 'a',
      b: 'b',
      c: 'c',
      d: 'd',
      e: 'e',
      f: 'f',
      g: 'g',
      dp: 'dp',
      common: 'com',
    };
  }

  static info() {
    return {
      name: '7SegmentLED',
    };
  }

  wired(obniz) {
    function getIO(io) {
      if (io && typeof io === 'object') {
        if (typeof io['output'] === 'function') {
          return io;
        }
      }
      return obniz.getIO(io);
    }
    function isValidIO(io) {
      if (io && typeof io === 'object') {
        if (typeof io['output'] === 'function') {
          return true;
        }
      }
      return obniz.isValidIO(io);
    }

    this.obniz = obniz;
    this.ios = [];
    this.ios.push(getIO(this.params.a));
    this.ios.push(getIO(this.params.b));
    this.ios.push(getIO(this.params.c));
    this.ios.push(getIO(this.params.d));
    this.ios.push(getIO(this.params.e));
    this.ios.push(getIO(this.params.f));
    this.ios.push(getIO(this.params.g));

    this.isCathodeCommon = this.params.commonType === 'anode' ? false : true;

    for (let i = 0; i < this.ios.length; i++) {
      this.ios[i].output(this.isCathodeCommon ? false : true);
    }

    if (isValidIO(this.params.dp)) {
      this.dp = getIO(this.params.dp);
      this.dp.output(false);
    }
    if (isValidIO(this.params.common)) {
      this.common = getIO(this.params.common);
      this.on();
    }
  }

  print(data) {
    if (typeof data === 'number') {
      data = parseInt(data);
      data = data % 10;

      for (let i = 0; i < 7; i++) {
        if (this.ios[i]) {
          let val = this.digits[data] & (1 << i) ? true : false;
          if (!this.isCathodeCommon) {
            val = !val;
          }
          this.ios[i].output(val);
        }
      }
      this.on();
    }
  }

  printRaw(data) {
    if (typeof data === 'number') {
      for (let i = 0; i < 7; i++) {
        if (this.ios[i]) {
          let val = data & (1 << i) ? true : false;
          if (!this.isCathodeCommon) {
            val = !val;
          }
          this.ios[i].output(val);
        }
      }
      this.on();
    }
  }

  dpState(show) {
    if (this.dp) {
      this.dp.output(this.isCathodeCommon ? show : !show);
    }
  }

  on() {
    this.common.output(this.isCathodeCommon ? false : true);
  }

  off() {
    this.common.output(this.isCathodeCommon ? true : false);
  }
}

if (typeof module === 'object') {
  module.exports = _7SegmentLED;
}