Why I can't set gpio high in ls1021atwr?

[2838219522]

When I set EC2 into CAN3,CAN4 through RCW,I shell with "echo out > /sys/class/gpio/gpio443/direction;echo 1 > /sys/class/gpio/gpio443/value",but the GPIO3_27 output low-level.

When I set EC2 into GPIO3 through RCW,I shell with "echo out > /sys/class/gpio/gpio443/direction;echo 1 > /sys/class/gpio/gpio443/value",the GPIO3_27 will output high-level.

Why Reserved can't be used as GPIO?

[ufedor · Accepted solution]

The functionality in question is by design - only explicitly defined options can be used.

[2838219522]

Thank you,ufedor.

I have anothor question.

In the AN5089.pdf.

I shell with "md.b 60000000 80" in norflash bank0.display as below.

09 ee 02 00 60 10 00 00

I shell with "md.b 64000000 80" in norflash bank1.display as below.

09 ee 02 00 60 10 00 00       Why PBI don't be 09 ee 02 00 64 10 00 00?

And it can boot from bank1 as well.

It's confused.

[ufedor]

Please pose a new community question or new Technical Case:

https://community.freescale.com/thread/381898