Upgrade to i2c-bus 5.2.2, fix buffers allocations.

package.json

@@ -7,7 +7,7 @@
   },
   "dependencies": {
     "bignumber.js": "^4.0.2",
-    "i2c-bus": "^1.2.2"
+    "i2c-bus": "^5.2.2"
   },
   "node-red": {
     "nodes": {

sensors/bme280-node.js

@@ -252,7 +252,7 @@ module.exports = function (RED) {
 
     // get calibration parameters set 1 (1 of 2)
     let p2 = new Promise((resolve, reject) => {
-      let buffer = new Uint8Array(12 * 2 + 1 /* 12 coefficients, 2 bytes each + 1 byte*/);
+      let buffer = Buffer.alloc(12 * 2 + 1 /* 12 coefficients, 2 bytes each + 1 byte*/); //new Uint8Array(12 * 2 + 1 /* 12 coefficients, 2 bytes each + 1 byte*/);
       i2cBus.readI2cBlock(node.address, CALIBRATION_PARAMS_ADDRESS1, buffer.length, buffer, (err, bytesRead, buffer) => {
         if (err) {
           let errResult = `${node.name} read calibration parameters error:  ${err}`;
@@ -299,7 +299,7 @@ module.exports = function (RED) {
 
     // get calibration parameters set 2 (2 of 2)
     let p3 = new Promise((resolve, reject) => {
-      let buffer = new Uint8Array(7);
+      let buffer = Buffer.alloc(7); //new Uint8Array(7);
       i2cBus.readI2cBlock(node.address, CALIBRATION_PARAMS_ADDRESS2, buffer.length, buffer, (err, bytesRead, buffer) => {
         if (err) {
           let errResult = `${node.name} read calibration parameters error:  ${err}`;
@@ -535,7 +535,7 @@ module.exports = function (RED) {
     function measure() {
       debug(' measure() ...');
 
-      let buffer = new Uint8Array(8);
+      let buffer = Buffer.alloc(8); //new Uint8Array(8);
       let timeToWait = getMaxMeasureTime(node.tresolution, node.presolution, node.hresolution);
       debug(`timeToWait -> ${timeToWait} ms`);
 

sensors/bmp180-node.js

@@ -145,7 +145,7 @@ module.exports = function (RED) {
 
     // get calibration parameters
     let p2 = new Promise((resolve, reject) => {
-      let buffer = new Uint8Array(11 * 2 /* 12 coefficients, 2 bytes each */);
+      let buffer = Buffer.alloc(11 * 2 /* 11 coefficients, 2 bytes each */); //new Uint8Array(11 * 2 /* 12 coefficients, 2 bytes each */);
       i2cBus.readI2cBlock(node.address, CALIBRATION_PARAMS_ADDRESS, buffer.length, buffer, (err, bytesRead, buffer) => {
         if (err) {
           let errResult = `${node.name} read calibration parameters error:  ${err}`;
@@ -237,7 +237,7 @@ module.exports = function (RED) {
     function measure() {
       debug(' measure() ...');
 
-      let buffer = new Uint8Array(3);
+      let buffer = Buffer.alloc(3); //new Uint8Array(3);
       let timestamp;
       let UT = 0;
       let UP = 0;

sensors/bmp280-node.js

@@ -215,7 +215,7 @@ module.exports = function (RED) {
 
     // get calibration parameters
     let p2 = new Promise((resolve, reject) => {
-      let buffer = new Uint8Array(12 * 2 /* 12 coefficients, 2 bytes each */);
+      let buffer = Buffer.alloc(12 * 2 /* 12 coefficients, 2 bytes each */); //new Uint8Array(12 * 2 /* 12 coefficients, 2 bytes each */);
       i2cBus.readI2cBlock(node.address, CALIBRATION_PARAMS_ADDRESS, buffer.length, buffer, (err, bytesRead, buffer) => {
         if (err) {
           let errResult = `${node.name} read calibration parameters error:  ${err}`;
@@ -339,7 +339,7 @@ module.exports = function (RED) {
   }
 
   function measure(node) {
-    let buffer = new Uint8Array(6);
+    let buffer = Buffer.alloc(6); //new Uint8Array(6);
     let command = (node.p_oversampling | node.t_oversampling | node.powermode) & 0xff;
     node.log(' measure() ...');
 

sensors/mcp9808-node.js

@@ -193,7 +193,7 @@ module.exports = function (RED) {
                     reject(`mcp9808 set measure temperature error:  ${err}`);
                   } else {
 
-                    let buffer = new Uint8Array(2);
+                    let buffer = Buffer.alloc(2); //new Uint8Array(2);
                     i2cBus.readI2cBlock(node.address, REGISTER_TEMPERATURE, buffer.length, buffer, (err, bytesRead, buffer) => {
                       if (err) {
                         reject( `mcp9808 get temperature bytes error:  ${err}` );

sensors/tsl2561-node.js

@@ -257,7 +257,7 @@ module.exports = function (RED) {
 
             let lux = 0;
 
-            let buffer = new Uint8Array(4);
+            let buffer = Buffer.alloc(4); //new Uint8Array(4);
             let channel0 = 0;
             let channel1 = 0;