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Description
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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