Linux gpio descriptor
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The number of the gpiochip controller shows Linux base number for the MCA GPIOs (504 in the example). You can also determine the base number with: ~# cat /sys/class/gpio/gpiochip504/base 504 This means that the MCA_IO0 pin corresponds to GPIO index 504 in Linux, MCA_IO1 corresponds to 505, and so on.
Feb 24, 2020 · The USRP-2974 is the equivalent to a USRP X310 with two UBX-160 boards, a GPSDO and an onboard Intel i7 computer. The USRP-2974 comes with NI Linux RTOS pre-installed, but in order to use it with open-source tool-chain, a user will need to install Linux (preferably Fedora or Ubuntu) and then the USRP Hardware driver (UHD).