Pin mapping changes for DFRobot kit air quality sensor in JS

Signed-off-by: deadprogram <ron@hybridgroup.com>
intel-iot-devkit · Dec 15, 2016 · 6901c8f · 6901c8f
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diff --git a/air-quality-sensor/javascript/README.md b/air-quality-sensor/javascript/README.md
@@ -120,7 +120,7 @@ You need to have a DFRobot\* LCD Keypad Shield connected to an Arduino\*-compati
 
 1. Plug one end of a DFRobot\* cable into the Buzzer, and connect the other end to the A1 port on the DFRobot\* LCD Keypad Shield.
 
-2. Plug one end of a DFRobot\* cable into the Air Quality Sensor, and connect the other end to the A2 port on the DFRobot\* I/O Expansion Shield.
+2. Plug one end of a DFRobot\* cable into the Air Quality Sensor, and connect the other end to the A3 port on the DFRobot\* LCD Keypad Shield.
 
 ### Installing the program manually on the Intel® Edison board
 

diff --git a/air-quality-sensor/javascript/dfrobot.js b/air-quality-sensor/javascript/dfrobot.js
@@ -39,13 +39,15 @@ exports.init = function(config) {
     mraa.addSubplatform(mraa.GENERIC_FIRMATA, "/dev/ttyACM0");
 
     buzzer = new mraa.Gpio(15 + 512); // aka A1
-    air = new (require("jsupm_gas").MQ2)(2 + 512); // aka A2
+    air = new (require("jsupm_gas").MQ2)(3 + 512); // aka A3
   } else {
     buzzer = new mraa.Gpio(15); // aka A1
-    air = new (require("jsupm_gas").MQ2)(2); // aka A2
+    air = new (require("jsupm_gas").MQ2)(3); // aka A3
   }
 
   buzzer.dir(mraa.DIR_OUT);
+  buzzer.write(0);
+
   return;
 }