topic Re: Trigger for the DAC module in Processor Expert Software

Trigger for the DAC module

nadine — Tue, 09 Feb 2016 10:09:26 GMT

Hi,

I'm working with a FRDM-K64K board, KDS 3.0.0 and K SDK 1.3.0.

It's my first program on this environment, so the question could be

obvious for expert guys.

I plan to use the DAC in FIFO mode, but I don't want the CPU to manage the

emptying of the FIFO. The solution I have found:

- set up the triggerMode of the DAC to kDacTriggerByHardware

- use the PDB driver.

I'm looking for code example using the functions PDB_DRV_ConfigDacInterval() and

PDB_DRV_SetDacIntervalValue() functions because i not sure to understand correctly

the usage of these functions.

Thanks for your help,

Regards

Nadine

DavidS — Tue, 09 Feb 2016 16:23:07 GMT

Hi Nadine,

Their is a KSDK_v2 release that supports the frdm-k64f and has an example of using PDB with DAC.

Once configured and downloaded and un-zipped, then look in following for the example.

C:\NXP\KSDK_v2\SDK_2.0_FRDM-K64F_KDS\boards\frdmk64f\driver_examples\pdb\dac_trigger

Note your initial path might be different.

Regards,

David

nadine — Thu, 11 Feb 2016 08:43:40 GMT

HI David,

Thanks for your answer. That is exactly what I was looking for.

Regards

Nadine