ESP32 based wall thermostat with ILI9341 touchscreen and MODBUS support for ArduiTouch ESP

Install the following libraries through Arduino Library Manager

Adafruit GFX Library https://github.com/adafruit/Adafruit-GFX-Library/archive/master.zip Adafruit ILI9341 Library https://github.com/adafruit/Adafruit_ILI9341 XPT2046_Touchscreen by Paul Stoffregen https://github.com/PaulStoffregen/XPT2046_Touchscreen/blob/master/XPT2046_Touchscreen.h SimpleModbus NG https://github.com/angeloc/simplemodbusng

You can also download the library also directly as ZIP file and uncompress the folder under yourarduinosketchfolder/libraries/

After installing the Adafruit libraries, restart the Arduino IDE.

Please see the table below about the register function: 400001 ROOM_TEMP measured room temperatur from external sensor (values 5 - 50) 400002 SET_TEMP set-point temperature by user (values 18 - 28) 400003 FAN_LEVEL level for ventilation (values 0 - 5) 400004 BEEPER any value between 500 and 4000 will set the beeper with the given frequency for 100ms 400005 DISP_ONOFF timer for display automatic off function (0 switch backlight off, >0 set timer for automatic) 400006 TOTAL_ERRORS Counted communication errors

You can find the latest version of the code and the description of the hardware at https://www.hwhardsoft.de/english/projects/arduitouch-esp/

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA