P2040: Problem with setup eTSEC1 as GPIO output

cancel
Showing results for 
Show  only  | Search instead for 
Did you mean: 

P2040: Problem with setup eTSEC1 as GPIO output

394 Views
andreykondraten
Contributor I

I have a problem with using eTSEC1 signal group as a GPIO30, GPIO31.

It retains "0" on this pins (EC1_TXD1/GPIO[30] , EC1_TXD3/GPIO[31]).

RCW seems to be right (RCW[2C]: F8 DA 4E F6), it was generated by "Configuration Suite".

Other functions (ex. SDRAM, SDHC, NAND, ...) and other GPIO working good.

Reason was: two RCW fields for one purpose. To activate GPIO 30-31, both RCW 352-353, 360-361 fields to be properly setted (0b11, 0b01). Last one has unobvious description "01: 1588 and external timestamping functionality."

Labels (1)
Tags (3)
0 Kudos
0 Replies