TDA4VM: I want to check GPIO, PWM and ADC

Yangjin Kim

Part Number: TDA4VM

I'm developing I/O functions for TDA4x with an evaluation board

However, I just noticed that I couldn't find any pin on the evaluation board for GPIO, PWM, and ADC.

I have to check if GPIO, PWM, and ADC functions work physically with an oscilloscope.

For example, I want a GPIO pin to be set as high by using Dio APIs and check if the pin is really high with an oscilloscope.

and also in terms of Pwm, I want a pin to generate pulses with a specific width by using Pwm APIs and check if it works as I configured with an oscilloscope.

And for Adc, I want to give a specific voltage to a pin, and check if APIs can read correctly.

I can't do these things because it seems that there's no pin on an evaluation board.

Is there any pin for these tests? Thanks

over 5 years ago

0 Nikhil Devshatwar over 5 years ago

TI__Genius 9905 points

Hi,

All pins can be used as GPIO.

Just find a connector on the EVM (e.g. CAN header)

and set the right pinmux values and you should be able to control this as GPIO output.

Do you plan to do this from LInux or RTOS?

Regards,

Nikhil D

0 Yangjin Kim over 5 years ago in reply to Nikhil Devshatwar

Prodigy 150 points

Thanks for your reply.

on RTOS I want to do it.

could you show me an example?

0 Yangjin Kim over 5 years ago in reply to Nikhil Devshatwar

Prodigy 150 points

Please show me some example to test PWM and ADC thanks

0 Nikhil Devshatwar over 5 years ago in reply to Yangjin Kim

TI__Genius 9905 points

Hello,

I have knowledge to support you on the GPIO issues.

Please mark this thread closed and create a new one for PWM/ADC so that it can get assigned to appropriate owner

Regards,

Nikhil D

0 Yangjin Kim over 5 years ago in reply to Nikhil Devshatwar

Prodigy 150 points

Thanks for your reply

I created a new question or Adc, and Pwm.

Please, could you provide any method to prove if GPIO works correctly in this thread?

This thread is going to be closed after then.

Thanks

0 Nikhil Devshatwar over 5 years ago in reply to Yangjin Kim

TI__Genius 9905 points

Hello,

As I mentioned, you can use any of the SoC pad as GPIO.

Please try to configure the CAN header pads as GPIO and then you can drive them in output mode as high or low.

Regards,

Nikhil D

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TDA4VM: I want to check GPIO, PWM and ADC