obniz/parts/TemperatureSensor/spi/ADT7310/index.js

obniz sdk for javascript

class ADT7310 {
  constructor() {
    this.keys = ['vcc', 'gnd', 'frequency', 'din', 'dout', 'clk', 'spi'];
    this.requiredKeys = [];
  }

  static info() {
    return {
      name: 'ADT7310',
    };
  }

  wired(obniz) {
    this.obniz = obniz;

    obniz.setVccGnd(this.params.vcc, this.params.gnd, '5v');

    this.params.mode = this.params.mode || 'master';
    this.params.frequency = this.params.frequency || 500000;
    this.params.mosi = this.params.din;
    this.params.miso = this.params.dout;
    this.spi = this.obniz.getSpiWithConfig(this.params);
  }

  async getTempWait() {
    await this.spi.writeWait([0x54]); //send before each commands for stable
    await this.obniz.wait(200);
    let ret = await this.spi.writeWait([0x00, 0x00]);
    let tempBin = ret[0] << 8;
    tempBin |= ret[1];
    tempBin = tempBin >> 3;

    if (tempBin & 0x1000) {
      tempBin = tempBin - 8192;
    }

    return tempBin / 16;
  }
}

if (typeof module === 'object') {
  module.exports = ADT7310;
}