topic Re: How Can I generate digital signal in program? in S32K

How Can I generate digital signal in program?

miketorres — Sun, 07 Nov 2021 09:46:54 GMT

Could you help me with one function? I have nxp s32k144evb and I have to write function in design studio which generate digital signal about 1000hz (square signal). Do you have any tips or program which include similar function?

Re: How Can I generate digital signal in program?

Senlent — Mon, 08 Nov 2021 03:02:03 GMT

Hi@miketorres

FTM(PWM) may meet you needs.

There is a route in S32 DS,ftm_pwm_s32k144,this example application showing the FTM's PWM functionality.

Usage or detail please refer to "ftm_pwm.dox" .

How to change the project to generate 1000hz square signal.

STEP1:

PTD15 is associated with FTM0 channel 0

BR!

Jim,

Re: How Can I generate digital signal in program?

miketorres — Wed, 24 Nov 2021 18:49:01 GMT

Ok this method is good but in your example I generate 1000Hz digital signal (square signal) and I use FTM. How can I generate the same signal using only GPIO?

Re: How Can I generate digital signal in program?

Senlent — Thu, 25 Nov 2021 02:36:52 GMT

Hi@miketorres

please refer to "lpit_periodic_interrupt_s32k14x" ,this example meet your needs.

BR!

Jim,