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"""This app connects to the Hologram service via GPRS displays recieved data on the screen and sets the neopixles"""
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___title___ = "Hologram Demo"
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___license___ = "MIT"
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___dependencies___ = ["app", "sim800"]
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___categories___ = ["EMF", "System"]
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___bootstrapped___ = False
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#import ugfx, os, time, sleep, app, sim800
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import ugfx, app, sim800
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import os
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from tilda import Buttons
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from time import sleep
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from machine import Neopix
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n = Neopix()
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ugfx.init()
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ugfx.clear()
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ugfx.set_default_font(ugfx.FONT_FIXED)
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def callback(data):
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payload=data.decode("utf-8")
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ugfx.Label(5, 100, 240, 15, payload)
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colour = int(payload)
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n.display([colour,colour])
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print('Launching Hologram Demo')
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ugfx.Label(5, 20, 240, 15, "Starting....")
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sim800.setup_gprs()
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ugfx.Label(5, 20, 240, 15, "GPRS Ready")
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sim800.connect_gprs('hologram')
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ugfx.Label(5, 40, 240, 15, "GPRS Connected")
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sim800.start_server(4010, callback)
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ugfx.Label(5, 60, 240, 15, "Server Started")
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ugfx.Label(5, 300, 240, 15, "** Hold A or B or MENU to exit **")
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while (not Buttons.is_pressed(Buttons.BTN_A)) and (not Buttons.is_pressed(Buttons.BTN_B)) and (not Buttons.is_pressed(Buttons.BTN_Menu)):
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sleep(2)
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ugfx.clear()
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ugfx.Label(5, 20, 240, 15, "Stopping....")
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sim800.stop_server()
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sim800.stop_gprs()
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app.restart_to_default()
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@ -25,6 +25,7 @@ dirtybuffer = False # Flag if the buffer could have residual end of reresponsesp
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# A list of callback functions
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callbacks = []
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server_callback = None
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# Globals for remembering callback data
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clip = ""
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@ -105,6 +106,12 @@ def processcallbacks(line):
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# Check for Bluetooth pairing request
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if line.startswith("+BTPAIRING:"):
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btpairing = line[11:].strip()
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# Handle TCP Server Data
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if line.startswith("+RECEIVE"):
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dlen = int(line.split(",")[2].rstrip(":"))+1
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payload = uart.read(dlen)
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if server_callback:
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micropython.schedule(server_callback, payload[1:])
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# Check for app callbacks
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for entry in callbacks:
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if line.startswith(entry[0]):
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@ -847,6 +854,28 @@ def callbuttonpressed_internal(nullparam=None):
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def endbuttonpressed_internal(nullparam=None):
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hangup()
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#GPRS and TCP server functions
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def setup_gprs():
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command("AT+CIPSHUT", response_timeout=60000, custom_endofdata="SHUT OK")
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command("AT+CGATT?", response_timeout=10000)
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command("AT+CIPMUX=1", response_timeout=10000)
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def connect_gprs(apn):
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command("AT+CSTT=\""+apn+"\"", response_timeout=10000)
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command("AT+CIICR", response_timeout=10000)
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command("AT+CIFSR")
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def stop_gprs():
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command("AT+CIPSHUT", response_timeout=60000, custom_endofdata="SHUT OK")
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def start_server(port, callback):
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global server_callback
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server_callback = callback
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command("AT+CIPSERVER=1,"+str(port), response_timeout=10000)
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def stop_server():
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command("AT+CIPSERVER=0", response_timeout=10000)
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# Startup...
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