test node program for i2c

index.js

const i2c = require("i2c-bus");

const OSM_ADDR = 0x0b;
const I2C_START = 0x90;
const SET_PWM = 0xA0;
const RESET = 0xA0;

const i2c1 = new Promise((resolve, reject) => {
   const handle = i2c.open(1, (err) => err ? reject(err) : resolve(handle))
});

i2c1.then(handle => {
   const request = Buffer.from([ I2C_START, 0x03, 0x40, 0x00, 0x42 ]);
   handle.i2cWriteSync(OSM_ADDR, request.length, request)
   process.exit();
})


/*

i2c1.then(handle => {
   const request = Buffer.from([ I2C_START, 0x07, SET_PWM, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ]);
   const response = Buffer.alloc(3);
   handle.i2cWriteSync(OSM_ADDR, request.length, request)
   handle.i2cReadSync(OSM_ADDR, 0x03, response)
   console.log(response)
})
*/