I2S BCLK and double signal issue

[bojerko]

I am trying the demo from github (https://github.com/andenore/NordicSnippets/blob/master/examples/i2s_master/main.c) with nrf52 demo board and when checking the signal on BCLK I see that it is doubled. Like 

Any ideas why this is happening?

[Håkon Alseth]

Closing as duplicate: https://devzone.nordicsemi.com/f/nordic-q-a/48363/i2s-bclk-and-double-signal-issue