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Content def stat(p): n = len(p) mean = sum(p) / n var = sum((x - mean)**2 for x in p) / n std_dev = var ** 0.5 return mean, std_dev def do_measure(adc, transform_function, wait_ms=100, count=10): import array if wait_ms not in range (1, 10000): wait_ms=100 if count not in range (1, 100): count=10 p=array.array('f', [] ) for i in range(count): p.append(transform_function(adc.read())) time.sleep_ms(wait_ms) return stat(p) def http_senddata(url, username, password, data): import socket import ussl proto, _, host, path = url.split('/', 3) print(url) print(proto, host, path) print(socket.getaddrinfo(host, 443)) print('------------') addr = socket.getaddrinfo(host, 443)[0][-1] msg='GET {0} HTTP/1.1\r\nHost: {1}\r\nUsername: {2}\r\nPassword: {3}\r\n{4}\r\n\r\n'.format(path, host, username, password, data) s = socket.socket() s.connect(addr) if proto=='https:': s=ussl.wrap_socket(s) print("sending: \n----"+msg+"----") s.write(bytes(msg, 'utf8')) header=s.read(2000) body=s.read(4000) s.close() return header, body def read_config(conf_file): import json, os try: f=open(conf_file, 'r') conf=json.loads(f.read(1024)) if conf['essid']=='your_essid' and conf['username']=='login_user': raise Exception(1, "default config file") except: print("Can't open or not filled config file {}".format(conf_file)) x=os.getcwd() print("getcwd: {}".format(x)) print('please create the file with content:\n{"essid": "your_essid", "key": "wifi_password", "consumer_url": "https://mail.example.eu/data/measure", "username": "login_user", "password": "login_password"}') time.sleep(10) finally: f.close() return conf def do_wifi_connect(essid, key, rtc): wifi.connect(essid, key) while not wifi.status(): print('Waiting for wifi connection...') time.sleep(1) wifi.ntp() print('network config:', wifi.sta_if.ifconfig()) time.sleep(1) print('rtc time after setup: {0}, tz={1}'.format(time.strftime('%Y-%m-%d %H:%M:%S', rtc.now()), rtc.timezone())) import time, machine, wifi, system appName = system.currentApp() print('{} starting ...'.format(appName)) time.sleep(1) time.sleep(1) conf = read_config('/lib/'+appName+'/mconfig.json') mcp9701 = lambda x: (x-400)/19.5 # mV → °C convert rule for mcp9701 rtc=machine.RTC() adc=machine.ADC(36) adc.atten(adc.ATTN_6DB) do_wifi_connect(conf['essid'], conf['key'], rtc) url=conf['consumer_url'] user=conf['username'] passwd=conf['password'] while True: celsius, dev = do_measure(adc, mcp9701) data="Temp1: {0:5.1f} +/- {1:3.2f} C".format(celsius, dev) print("http_senddata('{0}', '{1}', '{2}', '{3}')".format(url, user, passwd, data)) header, body = http_senddata(url, user, passwd, data) print('------------header:') print(header) print('------------body:') print(body) print('sleeping...') time.sleep(60-1)