This is a sample app which blinks a LED using PWM.
The LED will start at a blinking frequency of 1 Hz. Every 4 seconds, the blinking frequency will double. When the blinking frequency reaches 64 Hz, the blinking frequency will be halved every 4 seconds until the blinking frequency reaches 1 Hz. This completes a whole blinking cycle. This faster-then-slower LED blinking cycle repeats forever.
Connect PWM2(PA0) to LED
Connect PWM1(PA8) to LED
No special board setup is necessary because there are three on-board LEDs (red, green, blue) connected to the Nucleo's PWM.
No special board setup is necessary because there is an on-board RGB LED connected to the K64 PWM.
No special board setup is necessary because there is an on-board LED connected.
You will need to connect the LED to ground and PWM0 via the shield. You may need a current limiting resistor. See your LED datasheet.
This sample can be built for multiple boards, in this example we will build it for the arduino_101 board:
.. zephyr-app-commands:: :zephyr-app: samples/basic/blink_led :board: nrf52840_pca10056 :goals: build flash :compact:
After flashing the image to the board, the user LED on the board should start to blinking as discussed in overview