#! /usr/bin/env python3 import subprocess import sys try: import serial except ImportError: subprocess.check_call([sys.executable, "-m", "pip", "install", 'pyserial']) finally: import serial import tkinter as tk from tkinter import ttk import tkinter.font as tkFont import os import serial.tools.list_ports from tkinter import filedialog as FileDialog import builtins def main(): VERSION="Version 1.1, esptool 3.2" oldprint=builtins.print def print(*args, **kwargs): app.addText(*args,**kwargs) builtins.print=print import esptool class App: def __init__(self, root): root.title("ESP32 NMEA2000 Flash Tool") root.geometry("800x600") root.resizable(width=True, height=True) root.configure(background='lightgrey') root.columnconfigure(0, weight=1) root.rowconfigure(0, weight=1) frame=tk.Frame(root) row=0 frame.grid(row=0,column=0,sticky='news',padx=10,pady=5) DUMMY = "prevent to handled as virus" #frame.configure(background='lightblue') frame.columnconfigure(0,weight=1) frame.columnconfigure(1, weight=3) tk.Label(frame,text="ESP32 NMEA2000 Flash Tool").grid(row=row,column=0,columnspan=2,sticky='ew') row+=1 tk.Label(frame, text=VERSION).grid(row=row,column=0,columnspan=2,sticky="ew",pady=10) row+=1 self.mode=tk.IntVar() self.mode.set(1) rdFrame=tk.Frame(frame) rdFrame.grid(row=row,column=1,sticky="ew",pady=20) tk.Radiobutton(rdFrame,text="Initial Flash",value=1,variable=self.mode,command=self.changeMode).grid(row=0,column=0) tk.Radiobutton(rdFrame, text="Update Flash", value=2, variable=self.mode,command=self.changeMode).grid(row=0,column=1) row+=1 tk.Label(frame, text="Com Port").grid(row=row,column=0,sticky='ew') ttk.Style().configure("TCombobox",padding=8,arrowsize=28) ttk.Style().configure("TEntry", padding=8) self.port=ttk.Combobox(frame) self.port.grid(row=row,column=1,sticky="ew",pady=5) row+=1 tk.Label(frame,text="Select Firmware").grid(row=row,column=0,sticky='ew') self.filename=tk.StringVar() fn=ttk.Entry(frame,textvariable=self.filename) fn.grid(row=row,column=1,sticky='ew',pady=5) fn.bind("<1>",self.fileDialog) row+=1 self.fileInfo=tk.StringVar() tk.Label(frame,textvariable=self.fileInfo).grid(row=row,column=0,columnspan=2,sticky="ew") row+=1 self.flashInfo=tk.StringVar() self.flashInfo.set("Address 0x1000") tk.Label(frame,textvariable=self.flashInfo).grid(row=row,column=0,columnspan=2,sticky='ew',pady=10) row+=1 btFrame=tk.Frame(frame) btFrame.grid(row=row,column=0,columnspan=2,pady=15) self.actionButtons=[] bt=tk.Button(btFrame,text="Check",command=self.buttonCheck) bt.grid(row=0,column=0) self.actionButtons.append(bt) bt=tk.Button(btFrame, text="Flash", command=self.buttonFlash) bt.grid(row=0, column=1) self.actionButtons.append(bt) self.cancelButton=tk.Button(btFrame,text="Cancel",state=tk.DISABLED,command=self.buttonCancel) self.cancelButton.grid(row=0,column=2) row+=1 self.text_widget = tk.Text(frame) frame.rowconfigure(row,weight=1) self.text_widget.grid(row=row,column=0,columnspan=2,sticky='news') self.readDevices() self.interrupt=False def updateFlashInfo(self): if self.mode.get() == 1: #full self.flashInfo.set("Address 0x1000") else: self.flashInfo.set("Erase(otadata): 0xe000...0xffff, Address 0x10000") def changeMode(self): m=self.mode.get() self.updateFlashInfo() self.filename.set('') self.fileInfo.set('') def fileDialog(self,ev): fn=FileDialog.askopenfilename() if fn: self.filename.set(fn) info=self.checkImageFile(fn,self.mode.get() == 1) if info['error']: self.fileInfo.set("***ERROR: %s"%info['info']) else: self.fileInfo.set(info['info']) 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,*args,**kwargs): first=True for k in args: self.text_widget.insert(tk.END,k) if not first: self.text_widget.insert(tk.END, ',') first=False if kwargs.get('end') is None: self.text_widget.insert(tk.END,"\n") else: self.text_widget.insert(tk.END,kwargs.get('end')) self.text_widget.see('end') root.update() if self.interrupt: self.interrupt=False raise Exception("User cancel") FULLOFFSET=61440 HDROFFSET = 288 VERSIONOFFSET = 16 NAMEOFFSET = 48 MINSIZE = HDROFFSET + NAMEOFFSET + 32 CHECKBYTES = { 0: 0xe9, # image magic 288: 0x32, # app header magic 289: 0x54, 290: 0xcd, 291: 0xab } def getString(self,buffer, offset, len): return buffer[offset:offset + len].rstrip(b'\0').decode('utf-8') def getFirmwareInfo(self,ih,imageFile,offset): buffer = ih.read(self.MINSIZE) if len(buffer) != self.MINSIZE: return self.setErr("invalid image file %s, to short"%imageFile) for k, v in self.CHECKBYTES.items(): if buffer[k] != v: return self.setErr("invalid magic at %d, expected %d got %d" % (k+offset, v, buffer[k])) name = self.getString(buffer, self.HDROFFSET + self.NAMEOFFSET, 32) version = self.getString(buffer, self.HDROFFSET + self.VERSIONOFFSET, 32) return {'error':False,'info':"%s:%s"%(name,version)} def setErr(self,err): return {'error':True,'info':err} def checkImageFile(self,filename,isFull): if not os.path.exists(filename): return self.setErr("file %s not found"%filename) with open(filename,"rb") as fh: offset=0 if isFull: b=fh.read(1) if len(b) != 1: return self.setErr("unable to read header") if b[0] != 0xe9: return self.setErr("invalid magic in file, expected 0xe9 got 0x%02x"%b[0]) st=fh.seek(self.FULLOFFSET) offset=self.FULLOFFSET return self.getFirmwareInfo(fh,filename,offset) def runCheck(self): self.text_widget.delete("1.0", "end") idx = self.port.current() isFull = self.mode.get() == 1 if idx < 0: self.addText("ERROR: no com port selected") return port = self.serialDevices[idx] fn = self.filename.get() if fn is None or fn == '': self.addText("ERROR: no filename selected") return info = self.checkImageFile(fn, isFull) if info['error']: print("ERROR: %s" % info['info']) return return {'port':port,'isFull':isFull} def runEspTool(self,command): for b in self.actionButtons: b.configure(state=tk.DISABLED) self.cancelButton.configure(state=tk.NORMAL) print("run esptool: %s" % " ".join(command)) root.update() root.update_idletasks() try: esptool.main(command) print("esptool done") except Exception as e: print("Exception in esptool %s" % e) for b in self.actionButtons: b.configure(state=tk.NORMAL) self.cancelButton.configure(state=tk.DISABLED) def buttonCheck(self): param = self.runCheck() if not param: return print("Settings OK") command = ['--chip', 'ESP32', '--port', param['port'], 'chip_id'] self.runEspTool(command) def buttonFlash(self): param=self.runCheck() if not param: return if param['isFull']: command=['--chip','ESP32','--port',param['port'],'write_flash','0x1000',self.filename.get()] self.runEspTool(command) else: command=['--chip','ESP32','--port',param['port'],'erase_region','0xe000','0x2000'] self.runEspTool(command) command = ['--chip', 'ESP32', '--port', param['port'], 'write_flash', '0x10000', self.filename.get()] self.runEspTool(command) def buttonCancel(self): self.interrupt=True root = tk.Tk() app = App(root) root.mainloop() if __name__ == "__main__": main()