espruinoctrl - fix docs (fix #3180), and

0.03: Now use BTN2 on Bangle.js 1, and on Bangle.js 2 use the middle button to return to the menu

apps/espruinoctrl/ChangeLog

@@ -1,2 +1,3 @@
 0.01: New App!
 0.02: Disable not existing BTN3 on Bangle.js 2, set maximum transmit power
+0.03: Now use BTN2 on Bangle.js 1, and on Bangle.js 2 use the middle button to return to the menu

apps/espruinoctrl/README.md

@@ -14,7 +14,8 @@ with 4 options:
 with this address will be connected to directly. If not specified a menu
 showing available Espruino devices is popped up.
 * **RX** - If checked, the app will display any data received from the
-device being connected to. Use this if you want to print data - eg: `print(E.getBattery())`
+device being connected to (waiting 500ms after the last data before disconnecting).
+Use this if you want to print data - eg: `print(E.getBattery())`
 
 When done, click 'Upload'. Your changes will be saved to local storage
 so they'll be remembered next time you upload from the same device.
@@ -25,4 +26,9 @@ Simply load the app and you'll see a menu with the menu items
 you defined. Select one and you'll be able to connect to the device
 and send the command.
 
-If a command should wait for a response then
+The Bangle will connect to the device, send the command, and if:
+
+* `RX` isn't set it will disconnect immediately and return to the menu
+* `RX` is set it will listen for a response and write it to the screen, before
+disconnecting after 500ms of inactivity. To return to the menu after this, press the button.
+

apps/espruinoctrl/custom.html

@@ -194,16 +194,14 @@ function sendCommandRX(device, text, callback) {
     function done() {
       Terminal.println("\\n============\\n     Disconnected");
       device.disconnect();
-      if (global.BTN3 !== undefined) {
-        setTimeout(function() {
-          setWatch(function() {
-            if (callback) callback();
-            resolve();
-          }, BTN3);
-          g.reset().setFont("6x8",2).setFontAlign(0,0,1);
-          g.drawString("Back", g.getWidth()-10, g.getHeight()-50);
-        }, 200);
-      }
+      setTimeout(function() {
+        setWatch(function() {
+          if (callback) callback();
+          resolve();
+        }, (process.env.HWVERSION==2) ? BTN1 : BTN2);
+        g.reset().setFont("6x8",2).setFontAlign(0,0,1);
+        g.drawString("Back", g.getWidth()-10, g.getHeight()/2);
+      }, 200);
     }
     device.getPrimaryService("6e400001-b5a3-f393-e0a9-e50e24dcca9e").then(function(s) {
       service = s;

apps/espruinoctrl/metadata.json

@@ -2,7 +2,7 @@
   "id": "espruinoctrl",
   "name": "Espruino Control",
   "shortName": "Espruino Ctrl",
-  "version": "0.02",
+  "version": "0.03",
   "description": "Send commands to other Espruino devices via the Bluetooth UART interface. Customisable commands!",
   "icon": "app.png",
   "tags": "tool,bluetooth",