Steps for Modifying and Updating the Firmware (for Developers)

For modifying and updating the Firmware of a SensePi unit one must have the repository setup on their computer.
Then follow these steps:

• Go to the folder "nrf5x-firmware > application" and make changes to the files you want to modify.

• Use command 'make release' in that directory, for example, if you made changes in the SensePir, use

  user:~/../nrf5x-firmware/application/SensePir$ make release
  

  to create the .zip folder containing all the .hex files for the firmware update of SensePir.
  It will also create a .hex file which can be used for directly flashing the firmware to the SensePi unit using a Pogo Connector, or to any other board using it's respective connector.

• You will find these files in the "nrf5x-firmware > release" folder.
• Transfer this .zip file to your mobile device.

Steps for using nRF Connect App

• Download the "nRF Connect for Mobile" App (by Nordic Semiconductor ASA) (Android|iOS) for flashing the firmware.
• You will have to go to the Bootloader mode. If you are using the SensePi unit, open it up and disconnect the power connector.
• Now keep the switch pressed and connect the power connector. You will see the LED blinking in a Green-Red pattern.
  You are in Bootloader mode now.
• Open the app. Keep your phone's bluetooth On.
• Use "Scan" option in the app and connect to your device.
• You will see a small, circular "DFU" icon on the top right corner. Press that.
• Now select the "Distribution packet (ZIP)" option.
• Browse to the location where you have the .zip file. Select the file and wait till the firmware is updated.
• And that's it, you have updated your device's firmware.
• If you are using a SensePi unit, it will now go to "Sensing Mode" after this.
  You can put back the cover and use it now.