How to build the blinky Zephyr application from source - Linux Host
These instructions can be used to build a simple ‘blinky’ demo using a Linux host machine as a development environment. The demo works by blinking the User LED (USR1) present on Nitrogen board.
After startup, the program looks up a predefined GPIO device, and configures the GPIO pin in output mode (USR1 LED). During each iteration of the main loop, the state of GPIO line will be changed so that the LED turns ON and OFF in an alternating pattern.
Once running, you should see the USR1 (green) blinking with 1 sec interval.
- Step 0: Download and setup Zephyr
- Step 1: Build a sample application in Zephyr
- Step 2: Proceed to Installation page for flashing instructions
Step 0: Download and setup Zephyr
- Download and setup the Zephyr development environment from https://www.zephyrproject.org. You can find more information about installing the Zephyr SDK at https://www.zephyrproject.org/doc/getting_started/getting_started.html
$ git clone https://gerrit.zephyrproject.org/r/zephyr
Step 1: Build the Zephyr disco application
$ cd zephyr
$ source zephyr-env.sh
$ cd samples/basic/blinky
$ mkdir build
$ cd build
$ cmake -DBOARD=96b_nitrogen ..
$ make
$ sudo make flash
The application will be available at samples/basic/blinky/build/zephyr/zephyr.hex.
Step 2: Proceed to Installation page for flashing instructions
Proceed to flash the Zephyr application binary over USB-UART or USB-DFU. Host machine specific flashing instructions can be found on the “Installation” page, link found below.