topic Re: KV11z- DAC with LPTMR in Kinetis Microcontrollers

KV11z- DAC with LPTMR

CMooN — Wed, 27 Jul 2022 07:00:50 GMT

Hi,

I am trying to built a interrupt timer for dac_basic.c . For this purpose, I want to use the logic of lptmr.c and control voltage produced by DAC. Can someone help me for this ?

Re: KV11z- DAC with LPTMR

Julián_AragónM — Wed, 27 Jul 2022 17:11:19 GMT

Hi @CMooN,

The timer handler is used in the SDK example you mention, which will prove useful for your application. You will need to merge these projects to use lptmr and dac functionalities together.

I hope you find this useful! Best regards, Julian

Re: KV11z- DAC with LPTMR

CMooN — Thu, 28 Jul 2022 08:15:50 GMT

Hi @Julián_AragónM ,

Thanks for your answer. I have merged lptmr and dac functionalities together. My purpose is to increase dacValue from 0 to 4095 in 3 seconds. What should I do in the function called 'LPTMR_LED_HANDLER' ?

Re: KV11z- DAC with LPTMR

Julián_AragónM — Fri, 29 Jul 2022 15:44:55 GMT

Hi @CMooN,

If your goal is to increase the DAC value in each interrupt, inside the handler you will need to implement a function or flag to check so you increase the value each time an interrupt is taken place.

Re: KV11z- DAC with LPTMR

CMooN — Thu, 04 Aug 2022 11:21:24 GMT

Hi,

Can you please help me about how to init GPIO and to toggle it?

I want to init PTE16 and toggle it i LPTMR.

Re: KV11z- DAC with LPTMR

Julián_AragónM — Thu, 04 Aug 2022 16:20:48 GMT

Hi @CMooN,

In the SDK examples, you can find a project with GPIO initialization and toggle function under "driver_examples" -> "gpio" -> "gpio_input_interrupt".

I hope you find this useful!

Best regards, Julián