AWR2944EVM: How to generate pulse with GPIO.

紫圣王

Prodigy 200 points

Part Number: AWR2944EVM
Other Parts Discussed in Thread: SYSCONFIG

Tool/software:

Hello Designer,

I want to generate a pulse output with GPIO, for example D16.

I set related config by sysconfig as below:

But there is no pulse signal in the oscilloscope.

Is there still something required to be set?

Help.

Regards,

Zisheng Wang

Hi, I just tried to create a task to do it, but it still didn't work.

my pesudo code is like:

#begin

task_function(){

while(1){

GPIO_pinWriteHigh(baseAddr, pinNum);

ClockP_sleep(1)

GPIO_pinWriteLow(baseAddr, pinNum);

ClockP_sleep(1)

}

STACK_SIZE = 32

PRIORITY = 1

xTaskCreate(Task_function, STACK_SIZE, NULL, PRIORITY, &taskHandle)

#end

I don't know what I can do now.

Really need your help.

Regards,

Zisheng Wang

over 1 year ago

0 shruti gupta over 1 year ago

TI__Genius 11220 points

Hi Wang,

Which pin you are probing on the board after configuration?

Regards,

Shruti

0 紫圣王 over 1 year ago in reply to shruti gupta

Prodigy 200 points

Hi Shrti,

After removing R12, I probe the pad of R12, the result is that the pad near U3 is always high and the other pad is always low.

0 shruti gupta over 1 year ago in reply to 紫圣王

TI__Genius 11220 points

Hi Wang,

Can you do the same experiment by configuring any gpio which is connected to any of the led on the board and see if the led is toggling or not. If led is toggling that means, you will get the pulse and there's some connection issue while probing.

Regards,

Shruti

0 紫圣王 over 1 year ago in reply to shruti gupta

Prodigy 200 points

Hi Shruti,

I am sorry for that I forgot to provide enough context information of version of SDK, SDK4.4.1.2 which has a bug that related code about GPIO generated is wrong, that I find it in another question's solution in the forum.

Sorry to waste your time.

Regards,

Zisheng Wang

0 紫圣王 over 1 year ago in reply to shruti gupta

Prodigy 200 points

Hi Shruti,

I have anther question, What does the slew rate high in Sysconfig mean?

Does it mean that it can generate pulse signal automatically with it?

Regards,

Zisheng Wang

PS:I am sorry to misspell your name.

0 shruti gupta over 1 year ago in reply to 紫圣王

TI__Genius 11220 points

Hi Wang,

Apologies for the delay, slew rate is not related to pulse generation, rather it's a measure of how fast or slow the signal can rise or fall.

Regards,

Shruti

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AWR2944EVM: How to generate pulse with GPIO.