1# PWM grouped mode {#pwm_grouped_desc}
2
3The sample demonstrates a basic functionality of the nrfx_pwm driver for a sequence loaded in the group mode.
4
5## Requirements
6
7The sample supports the following development kits:
8
9| **Board**           | **Support** |
10|---------------------|:-----------:|
11| nrf52dk_nrf52832    |     Yes     |
12| nrf52833dk_nrf52833 |     Yes     |
13| nrf52840dk_nrf52840 |     Yes     |
14| nrf5340dk_nrf5340   |     Yes     |
15| nrf9160dk_nrf9160   |     Yes     |
16
17## Overview
18
19Application initializes the nrfx_pwm driver.
20It starts two-sequence playback on LEDs and replays this sequence @p NUM_OF_LOOPS times.
21The @p pwm_handler() is executed with a relevant log message after every loop.
22Additionally, it changes SEQ1 each time it is called.
23
24> For more information, see **PWM driver - nrfx documentation**.
25
26## Wiring
27
28To run this sample, no special configuration is needed.
29You should monitor the output from the board to check if it is as expected.
30
31## Building and running
32
33To run this sample, build it for the appropriate board and then flash it as per instructions in [Building and running](@ref building_and_running) section.
34
35## Sample output
36
37You should see the following output:
38
39```
40- Starting nrfx_pwm example for sequences loaded in grouped mode.
41- Loops: 1 / 6
42- SEQ1 changed to sequence number 2 from the seq array
43- Loops: 2 / 6
44- SEQ1 changed to sequence number 1 from the seq array
45- Loops: 3 / 6
46- SEQ1 changed to sequence number 2 from the seq array
47- Loops: 4 / 6
48- SEQ1 changed to sequence number 1 from the seq array
49- Loops: 5 / 6
50- SEQ1 changed to sequence number 2 from the seq array
51- Loops: 6 / 6
52- SEQ1 changed to sequence number 1 from the seq array
53- PWM finished
54```
554 LEDs on the development kit should blink in the following sequence:
56
57@cond DOXYGEN_EXCLUDE
58![pwm_grouped_gif](../../../doc/images/pwm_grouped_desc.gif "PWM grouped example")
59@endcond
60
61@image html pwm_grouped_desc.gif "PWM grouped example"
62
63[//]: #
64[Building and running]: <../../../README.md#building-and-running>
65