obniz/parts/Memory/24LC256/index.js

obniz sdk for javascript

class _24LC256 {
  constructor() {
    this.requiredKeys = ['address'];
    this.keys = ['sda', 'scl', 'clock', 'pull', 'i2c', 'address'];
  }

  static info() {
    return {
      name: '24LC256',
    };
  }

  wired(obniz) {
    this.params.mode = this.params.mode || 'master'; //for i2c
    this.params.clock = this.params.clock || 400 * 1000; //for i2c
    this.i2c = obniz.getI2CWithConfig(this.params);
  }

  // Module functions

  set(address, data) {
    let array = [];
    array.push((address >> 8) & 0xff);
    array.push(address & 0xff);
    array.push.apply(array, data);
    this.i2c.write(0x50, array);
    this.obniz.wait(4 + 1); // write cycle time = 4ms for 24XX00, 1.5ms for 24C01C, 24C02C
  }

  async getWait(address, length) {
    let array = [];
    array.push((address >> 8) & 0xff);
    array.push(address & 0xff);
    this.i2c.write(0x50, array);
    return await this.i2c.readWait(0x50, length);
  }
}

if (typeof module === 'object') {
  module.exports = _24LC256;
}