TTN Mapper ด้วย TTGO Tbeam V.1.1

2 min readApr 23, 2021

ตัวอย่างภาษา MicroPython

import machine
import socket
import time
import ubinascii
from cayennelpp import CayenneLPP
from micropyGPS import MicropyGPS 
from network import LoRa

lora = LoRa(mode=LoRa.LORAWAN, region=LoRa.AS923)

app_eui = ubinascii.unhexlify('ABABABABABABAB')
app_key = ubinascii.unhexlify('45ADB18947EF42ADC36231E01E5084')
dev_eui = ubinascii.unhexlify('70B3D57ED006B0')
lora.join(activation=LoRa.OTAA, auth=(dev_eui, app_eui, app_key), timeout=0)

com = UART(1, 9600)  
ucom = UART(1, baudrate=9600, pins=('P9','P18'))

my_gps = MicropyGPS(7)
my_gps.local_offset
def get_GPS_values():    
    global gps_values,rtc 
    time.sleep(2)
    cc = com.readline()
    print (cc)
    for x in cc:
        my_gps.update(chr(x))
    gps_values = str(my_gps.latitude[0] + (my_gps.latitude[1] / 60)) + ',' + str(my_gps.longitude[0] + (my_gps.longitude[1] / 60))
    date = my_gps.date
    timestamp = my_gps.timestamp
    hour = timestamp[0]
    rtc = str(int(timestamp[0]))+":"+str(int(timestamp[1]))+":"+str(int(timestamp[2])) 
    return gps_values,rtc

while not lora.has_joined():
    time.sleep(2.5)
    print('Not yet joined...')

print('Joined')
s = socket.socket(socket.AF_LORA, socket.SOCK_RAW)

while True:
    while not get_GPS_values():
        time.sleep(2.5)
        print('Not yet get GPS..')
    print("LAT,LONG",gps_values)
    lat,long=gps_values.split(",")
    print (float(lat))
    print (float(long))
    temp=25
    hum=50
    pa=1000
    print('temp:', temp, ' Hum:', hum , 'PA:', pa)
    c = CayenneLPP()
    c.addTemperature(1, float(temp)) 
    c.addRelativeHumidity(3, float(hum))
    c.addGPS(7, float(lat), float(long),2.0 )
    msg=bytes(list(c.getBuffer()))
    s.setblocking(True)
    s.send(msg)
    s.setblocking(False)
    data = s.recv(64)
    print('Downlink:',data)
    time.sleep(10)