intermediate: minimal flash ui

tools/flashtool.py

@@ -1,9 +1,11 @@
 #! /usr/bin/env python3
 import tkinter as tk
+from tkinter import ttk
 import tkinter.font as tkFont
+import serial.tools.list_ports
 
 import builtins
-import io
+
 
 
 oldprint=builtins.print
@@ -16,27 +18,53 @@ import esptool
 
 class App:
     def __init__(self, root):
-        #setting title
         root.title("ESP32 NMEA2000 Flash Tool")
         root.geometry("800x600")
         root.resizable(width=True, height=True)
         root.configure(background='lightgrey')
-        tk.Label(root,text="ESP32 NMEA2000 Flash Tool").grid(row=0,column=0,columnspan=2)
-        tk.Label(root, text="Com Port").grid(row=1,column=0)
-        self.port=tk.StringVar()
-        tk.Entry(root,textvariable=self.port).grid(row=1,column=1)
-        tk.Label(root,text="Select Firmware").grid(row=2,column=0)
+        root.columnconfigure(0, weight=1)
+        root.rowconfigure(0, weight=1)
+        frame=tk.Frame(root)
+        frame.grid(row=0,column=0,sticky='news')
+        #frame.configure(background='lightblue')
+        frame.columnconfigure(0,weight=1)
+        frame.columnconfigure(1, weight=3)
+        tk.Label(frame,text="ESP32 NMEA2000 Flash Tool").grid(row=0,column=0,columnspan=2,sticky='ew')
+        tk.Label(frame, text="Com Port").grid(row=1,column=0,sticky='ew')
+        self.port=ttk.Combobox(frame)
+        self.port.grid(row=1,column=1,sticky="ew")
+        tk.Label(frame,text="Select Firmware").grid(row=2,column=0,sticky='ew')
         self.filename=tk.StringVar()
-        tk.Entry(root,textvariable=self.filename).grid(row=2,column=1)
-        tk.Label(root,text="Address 0x10000").grid(row=3,column=0,columnspan=2)
-        tk.Button(root,text="Flash",command=self.buttonAction).grid(row=4,column=0,columnspan=2)
-        self.text_widget = tk.Text(root, height=20, width=60)
-        self.text_widget.grid(row=5,rowspan=10,column=0,columnspan=2)
+        tk.Entry(frame,textvariable=self.filename).grid(row=2,column=1,sticky='ew')
+        tk.Label(frame,text="Address 0x10000").grid(row=3,column=0,columnspan=2,sticky='ew',pady=10)
+        tk.Button(frame,text="Flash",command=self.buttonAction).grid(row=4,column=0,columnspan=2,pady=10)
+        self.text_widget = tk.Text(frame)
+        frame.rowconfigure(5,weight=1)
+        self.text_widget.grid(row=5,column=0,columnspan=2,sticky='news')
+        self.readDevices()
+
+    def readDevices(self):
+        self.serialDevices=[]
+        names=[]
+        for dev in serial.tools.list_ports.comports(False):
+            self.serialDevices.append(dev.device)
+            if dev.description != 'n/a':
+                label=dev.description+"("+dev.device+")"
+            else:
+                label=dev.name+"("+dev.device+")"
+            names.append(label)
+        self.port.configure(values=names)
     def addText(self,text):
         self.text_widget.insert(tk.END,text+"\n")
 
     def buttonAction(self):
-        command=['--chip','ESP32','--port',self.port.get(),'chip_id']
+        self.text_widget.delete("1.0", "end")
+        idx=self.port.current()
+        if idx < 0:
+            self.addText("ERROR: no com port selected")
+            return
+        port=self.serialDevices[idx]
+        command=['--chip','ESP32','--port',port,'chip_id']
         print("run esptool: %s"%" ".join(command))
         try:
             esptool.main(command)