1st step for minimal flash ui

tools/flashtool.py

@@ -0,0 +1,51 @@
+#! /usr/bin/env python3
+import tkinter as tk
+import tkinter.font as tkFont
+
+import builtins
+import io
+
+
+oldprint=builtins.print
+def print(*args, **kwargs):
+    app.addText(args[0])
+
+
+builtins.print=print
+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)
+        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)
+    def addText(self,text):
+        self.text_widget.insert(tk.END,text+"\n")
+
+    def buttonAction(self):
+        command=['--chip','ESP32','--port',self.port.get(),'chip_id']
+        print("run esptool: %s"%" ".join(command))
+        try:
+            esptool.main(command)
+            print("esptool done")
+        except Exception as e:
+            print("Exception in esptool %s"%e)    
+        
+
+if __name__ == "__main__":
+    root = tk.Tk()
+    app = App(root)
+    root.mainloop()