Custom firmware for the Itead Sonoff SC environmental unit - sensors part.

• Fully compatible with original EWeLink firmware
• Support for two types of temperature and humidity sensors, DHT11 & DHT22
• Optionally support Microwave based presence detector
• Clap monitoring sends info when clapping is detected

This firmware is only for the slave unit in the Sonoff SC device and could be only uploaded into ATMega328.

  AT+UPDATE="humidity":42,"temperature":20,"light":7,"noise":3,"dusty":1,"dust":0,"illuminance":150[1B]
    response: AT+SEND=ok[1B] or AT+SEND=fail[1B]
  AT+STATUS?[1B]
    response: AT+STATUS=4[1B]

  AT+DEVCONFIG="uploadFreq":1800,"humiThreshold":2,"tempThreshold":1[1B]
  AT+NOTIFY="uploadFreq":1800,"humiThreshold":2,"tempThreshold":1[1B]
    response: AT+NOTIFY=ok[1B]
  AT+SEND=fail[1B]
  AT+SEND=ok[1B]
  AT+STATUS=4[1B]
  AT+STATUS[1B]
  AT+START[1B]

Communication have to be started from the master unit (ESP8266):

AT+START[1B]

Slave unit will respond with measured values:

AT+UPDATE="humidity":42,"temperature":20,"light":7,"noise":3,"dusty":1,"dust":0,"illuminance":150[1B]

Master have to answer to this response. If data are ok, then:

AT+SEND=ok[1B]

and if received data are not ok, then:

AT+SEND=fail[1B]

Slave unit, will in defined periods check the connection to the master. So it will ask master if is ready and receiving:

AT+STATUS?[1B]

Master have to answer with:

AT+STATUS=4[1B]

In case master do not respond to this check connection request, slave will stop transmit data.

This levels were measured during testing communication between this custom firmware and original EWeLink firmware.

• quiet - for values from 0.00 to 3.00
• normal - for values from 3.01 to 6.00
• noisy - for values from 6.01 to 10.00

• bright - for values from 0.00 to 4.00
• normal - for values from 4.01 to 8.00
• dusky - for values from 8.01 to 10.00

• good - for values from 0.00 to 4.00
• moderate - for values from 4.01 to 7.00
• unhealthy - for values from 7.01 to 10.00

case microwave is present, ATMega328 will send extended data message:

  AT+UPDATE="humidity":42,"temperature":20,"light":7,"noise":3,"dusty":1,"dust":0,"illuminance":150,"movement":1[1B]

Value for movement parameter could be 0 or 1, when 0 mean no presence detected.

Copyright (C) 2017-2018 by FastyBird Ltd.

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.