WIZnet Developer Forum

WIZ750SR-100 TCP GPIO control

Dear Sir or Madam,

I try to change the state of GPIOA of my WIZ750SR-100 board through TCP but the PIN does not change state.

I open TCP connection to: 192.168.11.2 and port: 50001

I check the MAC:
SENT: {4D}{41}{FF}{FF}{FF}{0D}{0A}{50}{57}{20}{0D}{0A}{4C}{49}{0D}{0A}
RECEIVED:{4D}{41}{00}{08}{DC}{56}{53}{FF}{0D}{0A}{50}{57}{20}{0D}{0A}{4C}{49}{31}{39}{32}{2E}{31}{36}{38}{2E}{31}{31}{2E}{32}{0D}{0A}

which means my MAC is: {00}{08}{DC}{56}{53}{FF}

after that I want to set GPIO A as output:
SENT: {4D}{41}{00}{08}{DC}{56}{53}{FF}{0D}{0A}{50}{57}{20}{0D}{0A}{43}{41}{31}{0D}{0A}
RECEIVED: {4D}{41}{00}{08}{DC}{56}{53}{FF}{0D}{0A}{50}{57}{20}{0D}{0A}
Is that answer ok?

After that I want to set GPIO A HIGH:
SENT: {4D}{41}{00}{08}{DC}{56}{53}{FF}{0D}{0A}{50}{57}{20}{0D}{0A}{47}{41}{31}{0D}{0A}
RECEIVED:{4D}{41}{00}{08}{DC}{56}{53}{FF}{0D}{0A}{50}{57}{20}{0D}{0A}

But the PIN does not change state. It changes nothing (GPIOA remains LOW).
Should the answers be different? Am I doing something wrong?

Regards,

Hello,

I tested it.

Set GPIOA to HIGH
SENT :
image

RECEIVED:
image

Set GPIO A to low
SENT :
image

RECEIVED:
image

It worked.
So I hope you check the GPIOA pin once more.

Hello becky

My MAC info was wrong. After setting the right MAC in the order it worked.

Thank you for your reply.

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