WIP on porting esptool.py to node flavor

package.json

@@ -24,9 +24,11 @@
   },
   "homepage": "https://github.com/thingsSDK/especially-flasher#readme",
   "dependencies": {
+    "node-binary": "^1.1.0",
     "serialport": "^2.0.6"
   },
   "devDependencies": {
-    "electron-prebuilt": "^0.36.9"
+    "electron-prebuilt": "^0.36.9",
+    "slip": "^1.0.2"
   }
 }

spike/flasher.js

@@ -0,0 +1,37 @@
+var SerialPort = require("serialport").SerialPort;
+var binary = require("binary");
+var slip = require("slip");
+
+// /path/to/esptool/esptool.py --port /dev/ttyUSB0 --baud 115200 \
+//   write_flash --flash_freq 80m --flash_mode qio --flash_size 32m \
+//   0x0000 "boot_v1.4(b1).bin" 0x1000 espruino_esp8266_user1.bin \
+//   0x3FC000 esp_init_data_default.bin 0x3FE000 blank.bin
+
+
+function slipReadParser(emitter, buffer) {
+        // This is the pyramid of doom right?
+        var decoder = new slip.Decoder({
+            onMessage: function(msg) {
+                emitter.emit('data', msg);
+            } 
+        });
+        decoder.decode(buffer);
+}
+
+function EspROM(config) {
+    this.port = new SerialPort(config.portName, {
+        baud: config.baud,
+        parser: slipReadParser
+    });
+    this.config = config;
+}
+
+// TODO:csd - How to make the commands pretty?
+// https://github.com/themadinventor/esptool/blob/master/esptool.py#L108
+EspROM.prototype.request = function(req) {
+    var port = this.port;
+    return new Promise(function(resolve, reject) {
+        port.write(slip.encode(req));
+        port.once('data', resolve);
+    });
+}