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misc:ovms:lvglstuff [2021/02/08 22:36]
jaxx created
misc:ovms:lvglstuff [2021/02/08 22:51] (current)
jaxx
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-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>