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RockPi4 Pull Up #1107

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stepuraK opened this issue Mar 23, 2023 · 0 comments

stepuraK commented Mar 23, 2023

Hello guys.
I try to pull up gpio pin on RockPi4 but get an error only:

Start to set mode
MRAA: Invalid resource.

Code is here:

mraa::Result status;

/* initialize GPIO */
mraa::Gpio gpio(GPIO_PIN);

printf("Start to set mode\n");
status = gpio.mode(mraa::MODE_PULLUP);
if (status != mraa::SUCCESS) {
printError(status);
return EXIT_FAILURE;
}

What's problem?
Is it possible to to use pull up/down feature?

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