SAADC 2Channels Scan Mode with EasyDMA

[BartoszT]

I need to collect data from 2 ADC channels. Ultimately, the data is to be sent to a table of 1000 samples (500 per channel). Samplerate can be 2KHz - 8kHz. When the table is full, the interrupt should be given.
It does not work for me. Here is my code.

1.Initialization

2.IRQ

Interrupt works with 1channel-1sample-TASK_SAMPLE combination (ONE-SHOT), but not for more channels.

What is wrong?

 

[haakonsh]

we do not need interrupts for done and resultdone, we only care about the END event. 

How do you trigger the SAMPLE task?

[BartoszT]

I changed little and now initialization looks:

this gives an interrupt after collecting 128 samples - for one channel only. Next trigger is launching inside interrupt.

[haakonsh]

It should give you an interrupt after 64 samples once you've enabled the 2. channel (MAXCOUNT/number of channels). 

[BartoszT]

But it doesn't, now it read 128 samples from one channel and inside interrupt channel is changed to another.

This is some code from interrupt:

[haakonsh]

I see that in you previous reply you only enabled channel 0, you need to enable both channels and set RESULT.MAXCNT = (Number of samples * number of channels).