Measure the quality of the air using Seeed Groove-Air quality sensor v1.3 and send data to backend using UBRIDGE sensor

Also the Environmental sensor on the ubirch#1 board measures the temperature, pressure and humidity asynchronously.

The board first signs these sensor values and sends the signed values to the Ubirch-Backend. Public-key cryptography is implemented to exchange the messages between the board and the backend securely.

The message is sent to the backend in a predefined interval of time, these intervals can also be configured by sending a configuration message to the device from the server. If the sensor temperature is more than the threshold limit then the message is sent more often.

• Clone the ubirch-mbed-air-quality-sensor

• Run mbed deploy to find and add missing libraries

• Run mbed update to update the repo to latest revision/ branch

• add target mbed target UBRIDGE

• add toolchain mbed toolchain GCC_ARM

• The board gets the credentials like Cell APN, username, password, MQTT username, password, host URL and port number from config.h file, which is ignored by git.

  Copy/ rename the config.h.template file as config.h and add the credentials

• to compile the program using mbed build tool run mbed compile
• to clean and rebuild the directory again run mbed compile -c

You can find the flash script in bin directory

• run ./bin/flash.sh to flash using NXP blhost tool
• alternatively, if you have SEGGER tools installed, run ./bin/flash.sh -j

• To compile Debug Release mbed compile --profile mbed-os/tools/profiles/debug.json

• use -c to recompile everything

• Create a gdb.init file and add this target extended-remote localhost:2331 monitor halt

• In terminal start the GDB Server JLinkGDBServer -if SWD -device MK82FN256xxx15

• run cgdb -d arm-none-eabi-gdb -x /home/user/gdb.init ./BUILD/UBIRCH1/GCC_ARM/mbed-os-porting.elf