Re: Can't setup GPIO

I understand you found the logical numbers there https://github.com/intel-iot-devkit/mraa/blob/master/docs/edison.md

so i do this

  dt = new mraa::Gpio(20);

  slk = new mraa::Gpio(21);

  dt->dir(mraa::DIR_IN);

  slk->dir(mraa::DIR_OUT);

and output is

Failed to write to export

Intel Edison Failed to initialise Arduino board TriState,                         check i2c devices! FATAL

terminate called after throwing an instance of 'std::invalid_argument'

  what():  Invalid GPIO pin specified