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--- misc:ovms:lvglstuff [2021/02/08 22:36] – created jaxx
+++ misc:ovms:lvglstuff [2021/02/08 22:51] (current) – jaxx
@@ Line 1: / Line 1: @@
-Random Stuff to play around hasp-lvgl
+====== Random Stuff to play around hasp-lvgl ======
+Github [[https://github.com/fvanroie/hasp-lvgl/ | hasp-lvgl]]
+Since I intend to have most of this running on embedded boards with OpenWRT for the 'smartest ones', most will be written down in micropython to keep things lightweight as possible
+Let's be honest, uploading the jsonl file each time is a pain:
+Try this:
+<code bash>
+curl 'http://10.33.64.20/edit' -F "filename=@pages.jsonl" && sleep 1 && curl -s -o /dev/null 'http://10.33.64.20/reboot'
+</code>
+Or, to minimize wear on the flash until you're happy, run this:
+<file python up_showjssonl.py>
+import sys,time
+from umqttsimple import MQTTClient
+import ubinascii
+import micropython
+# Put your own settings here obviously ;)
+mqtt_server = '10.33.64.2'
+client_id = 'platejsonloader'
+topic_pub_base = b'hasp/plate_joul'
+mqttuser = 'MQTTUSER'
+mqttpass = 'MQTTPASS'
+mqttkeepalive = 0
+state_stable = False
+counter = 0
+def connect_and_subscribe():
+  global client_id, mqtt_server, mqttuser, mqttpass, mqttkeepalive, state_stable
+  client = MQTTClient(client_id, mqtt_server, 1883 , mqttuser, mqttpass, mqttkeepalive)
+  client.connect()
+  print('Connected to %s MQTT broker' % (mqtt_server))
+  state_stable = False
+  return client
+def restart_and_reconnect():
+  print('Failed to connect to MQTT broker. Reconnecting...')
+  time.sleep_ms(50)
+  #sys.exit(0)
+try:
+  client = connect_and_subscribe()
+except OSError as e:
+  restart_and_reconnect()
+try:
+  # Using readlines()
+  for i in range (0, 13):
+    print("Clearing page %s"%i )
+    client.publish(b'%s/command/clearpage' % topic_pub_base, b'%s' % i )
+    time.sleep_ms(5)
+  file1 = open('pages.jsonl', 'r')
+  jsonlines  = file1.readlines()
+  count = 0
+  for jsonl in jsonlines:
+    print("Line{}: {}".format(count, jsonl.strip()))
+    if len(jsonl.strip()) >0 :
+      count+=1
+      client.publish(b'%s/command/jsonl' % topic_pub_base, b'%s' % jsonl.strip() )
+      time.sleep_ms(5)
+  # I use this to trigger actions from other scripts that watch this (reinjecting values to be precise)
+  client.publish(b'%s/LWT' % topic_pub_base, b'online')
+except OSError as e:
+  restart_and_reconnect()
+</file>