More GPIO

[Yellow Pitaya]

Hi,
Does anybody know if it is possible to use the dedicated pins (SPI, UART and I2C) as general purpose IO ?
Thanks
YP

[pavel]

It should be possible.

The unneeded peripherals can be disabled using the Zynq7 Processing System configurator:

• open .xpr project in vivado
• open block design
• double click on Zynq7 Processing system block
• go to Peripheral I/O pins
• uncheck all the peripherals that you don't need

Some instructions on how to control the GPIO pins can be found at this link.

[Yellow Pitaya]

Thanks Pavel !

[Nils Roos]

Two things to consider:
1. You can't repurpose the IOs of the I2C, because the external EEPROM (where the calibration is stored) is connected to it.
2. You'll need to adapt the patches/devicetree.patch and remove the references to deactivated components (spi1). The same goes for the kernel config (SPIDEV).

[Yellow Pitaya]

Thx !
YP