i2c dependency fix

lib/accelerometer.js

@@ -1,4 +1,4 @@
-var i2c = require('i2c');
+var i2c = require('i2c-bus');
 var utils = require('./util');
 
 var accel_address = 0x19;
@@ -15,10 +15,24 @@ function Accelerometer(options) {
     if (options && options.resolution) {
         resolution = options.resolution;
     }
-    this.accel = new i2c(accel_address, {
-        device: accel_device,
-        debug: false
-    });
+
+    var i2cbus = i2c.openSync(1);
+    this.accel = {
+        i2cbus : i2cbus,
+        readBytes: function(addr, count, callback) {
+            var buffer = Buffer.alloc(count);
+            return this.i2cbus.readI2cBlock(this.address, addr, count, buffer, function(err, bytesRead, buffer) { return callback(err, err?null:Array.prototype.slice.call(buffer, 0));
+        });},
+        writeBytes: function(addr, bytes, callback) {
+            if (bytes && bytes.length == 1)
+                return this.i2cbus.writeByte(this.address, addr, bytes[0], callback);
+            else {
+                var buffer = Buffer.from(bytes || []);
+                return this.i2cbus.writeI2cBlock(this.address, addr, buffer.length, buffer, callback);
+            }
+        },
+        address: accel_address
+    }
     this.init();
     this.setResolution();
 }

lib/lsm303.js

@@ -1,4 +1,3 @@
-var i2c = require('i2c');
 var Accelerometer = require('./accelerometer')
 var Magnetometer = require('./magnetometer')
 
@@ -21,4 +20,4 @@ LSM303.prototype.magnetometer = function(options){
     return this.mag;
 }
 
-module.exports = LSM303;
+module.exports = LSM303;

lib/magnetometer.js

@@ -1,4 +1,4 @@
-var i2c = require('i2c');
+var i2c = require('i2c-bus');
 var utils = require('./util');
 
 var mag_address = 0x1e;
@@ -11,10 +11,23 @@ function Magnetometer(options) {
     if (options && options.device) {
         mag_device = options.device;
     }
-    this.mag = new i2c(mag_address, {
-        device: mag_device,
-        debug: false
-    });
+    var i2cbus = i2c.openSync(1);
+    this.mag = {
+        i2cbus : i2cbus,
+        readBytes: function(addr, count, callback) {
+            var buffer = Buffer.alloc(count);
+            return this.i2cbus.readI2cBlock(this.address, addr, count, buffer, function(err, bytesRead, buffer) { return callback(err, err?null:Array.prototype.slice.call(buffer, 0));
+        });},
+        writeBytes: function(addr, bytes, callback) {
+            if (bytes && bytes.length == 1)
+                return this.i2cbus.writeByte(this.address, addr, bytes[0], callback);
+            else {
+                var buffer = Buffer.from(bytes || []);
+                return this.i2cbus.writeI2cBlock(this.address, addr, buffer.length, buffer, callback);
+            }
+        },
+        address: mag_address
+    }
     this.init();
     this.enableTempSensor();
 }

package.json

@@ -7,7 +7,7 @@
     "example": "example"
   },
   "dependencies": {
-    "i2c": "^0.2.3"
+    "i2c-bus": "^4.0.7"
   },
   "devDependencies": {},
   "repository": {