Create breadboard hardware setup to connect RH/T sensor with uC, RS485 and RS232

[forGGe]

The hardware setup should provide a medium to test main dataflow.

It is planned to:

• Use bluepill STM32F1 as a eval-board for uC
• Use UART to RS485 and RS485 to USB adapters to establish ModBus path
• Use UART to RS232 and RS232 to USB adapters to establish debug path
• Use Bosch BME280 sensor to gather environment data
• Power it by 5V lab supply

Should deliver:

• Core schematics (connection between uC/board to sensor, RS485, RS232)
• Verification firmware
• Host scripts to perform verification

Verification scripts, when launched, must query a sensor data through Modbus. Debug port (RS232) must display some information related to the state of the device. For the sake of simplicity the firmware for the verification can be written in mbed/Arduino environment.

[forGGe]

Done. BAT instructions: https://github.com/forGGe/HappySnail-THSensor/blob/master/proto_I/README.rst