0.02: Add 'pre' code that can erase the device

Wait more between sending code snippets
      Now force use of 'Storage' (assume 2v00 or later)

apps/espruinoprog/ChangeLog

@@ -1 +1,4 @@
 0.01: New App!
+0.02: Add 'pre' code that can erase the device
+      Wait more between sending code snippets
+      Now force use of 'Storage' (assume 2v00 or later)

apps/espruinoprog/README.md

@@ -13,6 +13,9 @@ Click on the Customise button in the app loader to set up the programmer.
 * First you need to choose the kind of devices you want to upload to. This is
 the text that should match the Bluetooth advertising name. So `Puck.js` for Puck.js
 devices, or `Bangle.js` for Bangles.
+* In the next box, you have code to run before the upload of the main code. By default
+the code `require("Storage").list().forEach(f=>require("Storage").erase(f));reset();` will
+erase all files on the device and reset it.
 * Now paste in the code you want to write to the device. This is automatically
 written to flash (`.bootcde`). See https://www.espruino.com/Saving#save-on-send-to-flash-
 for more information.
@@ -35,8 +38,6 @@ To stop scanning, long-press the button to return to the clock.
 
 ## Notes
 
-* Right now the Espruino Tools used here are unaware of the device they're writing to,
-and as a result they don't use Storage and so the size of the files you can
-write to the device are quite limited. You should be find with up to 4k of code.
+* This assumes the device being written to is at least version 2v00 of Espruino
 * Currently, code is not minified before upload (so you need to supply pre-minified
   code if you want that)

apps/espruinoprog/app.js

@@ -58,21 +58,31 @@ function scanAndConnect() {
       term.print("Connected...\r\n");
       uart.removeAllListeners();
       uart.on('data', function(d) { term.print(d); });
-      uart.write(json.code+"\n").then(() => {
-        term.print("\r\nUpload Complete...\r\n");
-        // main upload completed - wait a bit
+      term.print("Upload initial...\r\n");
+      uart.write((json.pre||"")+"\n").then(() => {
+        term.print("\r\Done.\r\n");
         uploadTimeout = setTimeout(function() {
-          term.print("\r\nFinal Upload...\r\n");
-          // now upload the code to run after...
-          uart.write(json.post+"\n").then(() => {
-            term.print("\r\nDone.\r\n");
-            // now wait and disconnect (if not already done!)
+          uploadTimeout = undefined;
+          term.print("\r\nUpload Code...\r\n");
+          uart.write((json.code||"")+"\n").then(() => {
+            term.print("\r\Done.\r\n");
+            // main upload completed - wait a bit
             uploadTimeout = setTimeout(function() {
-              term.print("\r\nDisconnecting...\r\n");
-              if (uart) uart.disconnect();
-            }, 500);
+              uploadTimeout = undefined;
+              term.print("\r\Upload final...\r\n");
+              // now upload the code to run after...
+              uart.write((json.post||"")+"\n").then(() => {
+                term.print("\r\nDone.\r\n");
+                // now wait and disconnect (if not already done!)
+                uploadTimeout = setTimeout(function() {
+                  uploadTimeout = undefined;
+                  term.print("\r\nDisconnecting...\r\n");
+                  if (uart) uart.disconnect();
+                }, 500);
+              });
+            }, 2000);
           });
-        }, 1000);
+        }, 2000);
       });
     });
   }).catch(err => {

apps/espruinoprog/custom.html

@@ -17,6 +17,8 @@
     <script src="https://cdnjs.cloudflare.com/ajax/libs/jshint/2.11.0/jshint.min.js"></script>
     <p>Upload code to devices with names starting with:</p>
     <p><input type="text" id="nameprefix"></input></p>
+    <p>Enter the code to send before upload here:</p>
+    <p><textarea id="pre-code"></textarea></p>
     <p>Enter your program to upload here:</p>
     <p><textarea id="js-code"></textarea></p>
     <p>Enter the code to send after upload here:</p>
@@ -24,12 +26,17 @@
     <p>Then click <button id="upload" class="btn btn-primary">Upload</button>&nbsp;<span id="btninfo" style="color:orange"></span> </p>
     <p><a id="setdefault">Click here</a> to reset to defaults.</p>
     <script>
+  const LS_PRECODE = "espruinoprog.precode";
   const LS_JSCODE = "espruinoprog.code";
   const LS_POSTCODE = "espruinoprog.postcode";
   const LS_NAMEPREFIX = "espruinoprog.namePrefix";
-  var jseditor,posteditor;
+  var preeditor,jseditor,posteditor;
 
   function setDefaults() {
+    if (localStorage.getItem(LS_PRECODE) === null) {
+        localStorage.setItem(LS_PRECODE, `// Erase all files (faster than eraseall)
+require("Storage").list().forEach(f=>require("Storage").erase(f));reset();`);
+    }
     if (localStorage.getItem(LS_JSCODE) === null) {
         localStorage.setItem(LS_JSCODE, `// Flash LED2 every 2 seconds
 setInterval(function() {
@@ -47,6 +54,8 @@ LED.set();NRF.sleep();`);
     if (localStorage.getItem(LS_NAMEPREFIX) === null) {
         localStorage.setItem(LS_NAMEPREFIX, "Puck.js");
     }
+    document.getElementById("pre-code").value = localStorage.getItem(LS_PRECODE);
+    if (preeditor) preeditor.setValue(document.getElementById("pre-code").value);
     document.getElementById("js-code").value = localStorage.getItem(LS_JSCODE);
     if (jseditor) jseditor.setValue(document.getElementById("js-code").value);
     document.getElementById("post-code").value = localStorage.getItem(LS_POSTCODE);
@@ -55,8 +64,6 @@ LED.set();NRF.sleep();`);
   }
   setDefaults();
 
-
-
   // The code editor
   var lintFlags = {
       esversion: 6, // Enable ES6 for literals, arrow fns, binary
@@ -64,6 +71,17 @@ LED.set();NRF.sleep();`);
       laxbreak: true, // don't warn about newlines in expressions
       laxcomma: true // don't warn about commas at the start of the line
   };
+  preeditor = CodeMirror.fromTextArea(document.getElementById("pre-code"), {
+      width: "100%",
+      height: "auto",
+      matchBrackets: true,
+      mode: { name: "javascript", globalVars: false },
+      lineWrapping: true,
+      showTrailingSpace: true,
+      lint: lintFlags,
+      gutters: ["CodeMirror-linenumbers", "CodeMirror-lint-markers"],
+      lineNumbers: true
+  });
   jseditor = CodeMirror.fromTextArea(document.getElementById("js-code"), {
       width: "100%",
       height: "auto",
@@ -87,7 +105,9 @@ LED.set();NRF.sleep();`);
       lineNumbers: true
   });
   function hasWarnings() {
-    return jseditor.state.lint.marked.length!=0 || posteditor.state.lint.marked.length!=0;
+    return  preeditor.state.lint.marked.length!=0 ||
+            jseditor.state.lint.marked.length!=0 ||
+            posteditor.state.lint.marked.length!=0;
   }
   var editorChangedTimeout;
   function editorChanged() {
@@ -95,26 +115,34 @@ LED.set();NRF.sleep();`);
     editorChangedTimeout = setTimeout(function() {
       if (hasWarnings()) {
         document.getElementById("btninfo").innerHTML = "There are warnings in the code to be uploaded";
-        document.getElementById("upload").classList.add("disabled");
+        //document.getElementById("upload").classList.add("disabled");
       } else {
         document.getElementById("btninfo").innerHTML = "";
-        document.getElementById("upload").classList.remove("disabled");
+        //document.getElementById("upload").classList.remove("disabled");
       }
     }, 500);
   }
 
+  preeditor.on("change", editorChanged);
   jseditor.on("change", editorChanged);
   posteditor.on("change", editorChanged);
 
   document.getElementById("upload").addEventListener("click", function() {
     if (!hasWarnings()) {
+      var precode = preeditor.getValue();
       var jscode = jseditor.getValue();
       var postcode = posteditor.getValue();
       var namePrefix = document.getElementById("nameprefix").value;
+      localStorage.setItem(LS_PRECODE, precode);
       localStorage.setItem(LS_JSCODE, jscode);
       localStorage.setItem(LS_POSTCODE, postcode);
       localStorage.setItem(LS_NAMEPREFIX, namePrefix);
 
+      // force version - as long as we're above 1v96 we get the ability to upload to different storage files
+      var ENV = Espruino.Core.Env.getData();
+      ENV.VERSION_MAJOR = 2;
+      ENV.VERSION_MINOR = 0;
+      // Now compile
       Espruino.transform(jscode, {
         SET_TIME_ON_WRITE : false, // time would just be out of date
         SAVE_ON_SEND : 1, // save to flash
@@ -125,6 +153,7 @@ LED.set();NRF.sleep();`);
         sendCustomizedApp({
           storage: [{ name: "espruinoprog.json", content: JSON.stringify({
               namePrefix : namePrefix,
+              pre : Espruino.Core.CodeWriter.reformatCode(precode),
               code : Espruino.Core.CodeWriter.reformatCode(content),
               post : Espruino.Core.CodeWriter.reformatCode(postcode)
           })}]
@@ -134,6 +163,7 @@ LED.set();NRF.sleep();`);
   });
   document.getElementById("setdefault").addEventListener("click", function(e) {
     e.preventDefault();
+    localStorage.removeItem(LS_PRECODE);
     localStorage.removeItem(LS_JSCODE);
     localStorage.removeItem(LS_POSTCODE);
     localStorage.removeItem(LS_NAMEPREFIX);

apps/espruinoprog/metadata.json

@@ -2,7 +2,7 @@
   "id": "espruinoprog",
   "name": "Espruino Programmer",
   "shortName": "Programmer",
-  "version": "0.01",
+  "version": "0.02",
   "description": "Finds Bluetooth devices with a specific name (eg 'Puck.js'), connects and uploads code. Great for programming many devices at once!",
   "icon": "app.png",
   "tags": "tool,bluetooth",