Add .tft file uploader.

Nextion/nextion.py

@@ -0,0 +1,120 @@
+#!/usr/bin/python
+# coding=utf-8
+
+import threading
+import time
+import os
+import sys
+import serial
+
+
+PORT = '/dev/ttyAMA0'
+BAUDCOMM = 9600
+BAUDUPLOAD = 115200
+CHECK_MODEL = 'NX3224T024'
+
+if len(sys.argv) != 2:
+	print 'usage: python %s file_to_upload.tft' % sys.argv[0]
+	exit(-2)
+
+file_path = sys.argv[1]
+
+if os.path.isfile(file_path):
+	print 'uploading %s (%i bytes)...' % (file_path, os.path.getsize(file_path))
+else:
+	print 'file not found'
+	exit(-1)
+
+fsize = os.path.getsize(file_path)
+print('Filesize: ' + str(fsize))
+
+ser = serial.Serial(PORT, BAUDCOMM, timeout=.1, )
+
+acked = threading.Event()
+stop_thread = threading.Event()
+
+def reader():
+    global acked
+    global ser
+    while stop_thread.is_set() == False:
+        r = ser.read(1)
+        if r == '':
+            continue
+        elif '\x05' in r:
+            acked.set()
+            continue
+        else:
+            print '<%r>' % r
+            continue
+
+
+def upload():
+    global acked
+    global ser
+    global stop_thread
+    ser.write('tjchmi-wri %i,%i,0' % (fsize, BAUDUPLOAD))
+    ser.write("\xff\xff\xff")
+    ser.flush()
+    acked.clear()
+    ser.baudrate = BAUDUPLOAD
+    ser.timeout = 0.1
+    threader.start()
+    print 'Waiting for ACK...'
+    acked.wait()
+    print 'Uploading...'
+    with open(file_path, 'rb') as hmif:
+        dcount = 0
+        while True:
+            #time.sleep(.1)
+            data = hmif.read(4096)
+            if len(data) == 0: break
+            dcount += len(data)
+            #print 'writing %i...' % len(data)
+            ser.write(data)
+            acked.clear()
+            sys.stdout.write('\rDownloading, %3.1f%%...' % (dcount/ float(fsize)*100.0))
+            sys.stdout.flush()
+            #print 'waiting for hmi...'
+            acked.wait()
+        print('')
+    stop_thread.set()
+    threader.join(1)
+
+
+threader = threading.Thread(target = reader)
+threader.daemon = True
+
+no_connect = True
+for baudrate in (2400, 4800, 9600, 19200, 38400, 57600, 115200):
+    ser.baudrate = baudrate
+    ser.timeout = 3000/baudrate + 0.2
+    print('Trying with ' + str(baudrate) + '...')
+    ser.write("\xff\xff\xff")
+    ser.write('connect')
+    ser.write("\xff\xff\xff")
+    r = ser.read(128)
+    if 'comok' in r:
+        print('Connected with ' + str(baudrate) + '!')
+        no_connect = False
+        status, unknown1, model, unknown2, version, serial, flash_size = r.strip("\xff\x00").split(',')
+        print('Status: ' + status)
+        print('Model: ' + model)
+        print('Version: ' + version)
+        print('Serial: ' + serial)
+        print('Flash size: ' + flash_size)
+        if fsize > flash_size:
+            print('File too big!')
+            break
+        if not CHECK_MODEL in model:
+            print('Wrong Display!')
+            break
+        upload()
+        break
+
+if no_connect:
+    print('No connection!')
+else:
+    print('File written to Display!')
+
+ser.close()
+