TMS320F28335: Selecting Multiple GPIO port A pins to wake from STANDBY mode

Brandon Dyer1

Part Number: TMS320F28335

Hello,

I was wondering if the TMS320F28335 can be awakened from STANDBY mode using more than just one GPIOA pin. The datasheet mentions that "a" GPIOA pin can be used to wake the device, but the Systems and Interrupts documentation shows that the GPIOLPMSEL register is simply a 32-bit mask, indicating that multiple GPIOA pins can be selected to wake the device. Is this the case?

Thank you,

Brandon

over 5 years ago

0 Hareesh Janakiraman over 5 years ago

TI__Guru* 95315 points

Brandon,

I have reached out to our design team for an answer. I do not have access to the hardware right now to try this out. Did you try this?

0 Brandon Dyer1 over 5 years ago in reply to Hareesh Janakiraman

Intellectual 500 points

Hareesh,

I have not tried this yet. I have designed a board I could test this on, but I will have to wait till I can go to the office to pick it up. The question I am asking is to determine if I will need additional hardware in my design to allow for multiple wake signals (such as an OR gate). I would like to avoid the extra hardware if I can. Thank you for all your help.

Regards,

Brandon

0 Hareesh Janakiraman over 5 years ago in reply to Brandon Dyer1

TI__Guru* 95315 points

Yes, it is confirmed you can configure more than one GPIO pin for wakeup.

0 Brandon Dyer1 over 5 years ago in reply to Hareesh Janakiraman

Intellectual 500 points

Thank you for confirming this for me.

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28335: Selecting Multiple GPIO port A pins to wake from STANDBY mode