Hello Nordic Team and Community,
During the exercise3 from Lesson6 ADC in nRF Connect SDK Intermediate course, I changed the sample buffer size to 1000 with a 1Khz sampling hate, as my understanding of the using ADC, the DONE event from SAADC event handler should be triggered and shown close to each second, but by using the TIMER0, in the logs the DONE event is triggered every 6 seconds and this should not happen, but when the timer used is the TIMER2 the sample works correctly, I just need to understand the reason of it, if the timers shouldn't be similar or there are differences between them?
I'm using NCS SDK 2.5.0 and nRF52840DK.
/*Logs using TIMER0 instance to trigger adc */ 00:08:39.178,039] <inf> main: SAADC buffer at 0x20002b98 filled with 1000 samples [00:08:39.178,070] <inf> main: AVG=3380, MIN=3367, MAX=3394 [00:08:45.027,496] <inf> main: SAADC buffer at 0x20003368 filled with 1000 samples [00:08:45.027,496] <inf> main: AVG=3379, MIN=3367, MAX=3392 [00:08:50.867,767] <inf> main: SAADC buffer at 0x20002b98 filled with 1000 samples [00:08:50.867,797] <inf> main: AVG=3379, MIN=3367, MAX=3392 [00:08:56.693,511] <inf> main: SAADC buffer at 0x20003368 filled with 1000 samples [00:08:56.693,542] <inf> main: AVG=3380, MIN=3367, MAX=3392
/* Logs using TIMER2 instance */ [00:17:36.734,130] <inf> main: SAADC buffer at 0x20003368 filled with 1000 samples [00:17:36.734,161] <inf> main: AVG=3380, MIN=3369, MAX=3392 [00:17:37.729,156] <inf> main: SAADC buffer at 0x20002b98 filled with 1000 samples [00:17:37.729,156] <inf> main: AVG=3381, MIN=3367, MAX=3392 [00:17:38.724,578] <inf> main: SAADC buffer at 0x20003368 filled with 1000 samples [00:17:38.724,609] <inf> main: AVG=3380, MIN=3369, MAX=3396
