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QNX SDP 8.0 BSP Documentation
The board support package (BSP) documentation includes user guides that describe how to work with the BSPs provided for the QNX Software Development Platform (SDP) 8.0, and release notes that describe the supported features and hardware as well as any known issues for each BSP.
Broadcom
Raspberry Pi 4 BCM2711
User's Guide
BSP-specific Drivers and Utilities
gpio-bcm2711
GPIO utility for BCM2711 SOC

QNX SDP 8.0 BSP Documentation
The board support package (BSP) documentation includes user guides that describe how to work with the BSPs provided for the QNX Software Development Platform (SDP) 8.0, and release notes that describe the supported features and hardware as well as any known issues for each BSP.
- AMD
- Broadcom
  - Raspberry Pi 4 BCM2711
    - Release Notes
    - User's Guide
      - Before You Begin
        Before you begin working with this BSP, you should become familiar with the resources available to you.
      - About This BSP
        These notes list what's included in the BSP, and identify the host OSs and boards it supports.
      - Installation Notes
        These installation notes describe how to build, work with, and run this BSP.
      - Build the BSP
        You can use the QNX Momentics IDE or the commandline on Linux or Windows to build an image.
      - Driver Commands
        The tables below provide a summary of driver commands for the Xilinx KD240.
      - BSP-specific Drivers and Utilities
        devc-serminiuart
        Serial driver for the mini UART on the Xilinx KD240.
        devs-genet.so
        Driver for the Raspberry Pi GENET ETHERNET
        devu-hcd-bcm2711-xhci.so
        Driver for Extensible Host Controller Interface (XHCI) USB controllers on Xilinx KD240 variants
        i2c-bcm2711
        Driver for inter-integrated circuits on the Xilinx Zynq UltraScale+ MPSoC KD240 Evaluation Kit.
        spi-bcm2711
        Enhanced Serial Peripheral Interface (SPI)
        gpio-bcm2711
        GPIO utility for BCM2711 SOC
        mbox-bcm2711
        Mailbox utility for BCM2711 SOC
- Intel
- NXP
- Texas Instruments
Typographical Conventions, Support, and Licensing
This section describes the typographical conventions used throughout the documentation, explains how to obtain technical support, and provides some information about licensing.

gpio-bcm2711

GPIO utility for BCM2711 SOC

Syntax:

gpio-bcm2711 [get|set|funcs|raw] [gpio number] [options]

Runs on:

QNX OS

Options:

GPIO is a comma-separated list of pin numbers or ranges (without spaces), e.g. 4 or 18-21 or 7,9-11. Valid [options] for gpio-bcm2711 set are:


ip      set GPIO as input
op      set GPIO as output
a0-a5   set GPIO to alternate function alt0-alt5
pu      set GPIO in-pad pull up
pd      set GPIO pin-pad pull down
pn      set GPIO pull none (no pull)
dh      set GPIO to drive to high (1) level (only valid if set to be an output)
dl      set GPIO to drive low (0) level (only valid if set to be an output)

Examples:

gpio-bcm2711 get              Prints state of all GPIOs one per line
gpio-bcm2711 get 20           Prints state of GPIO20
gpio-bcm2711 get 20,21        Prints state of GPIO20 and GPIO21
gpio-bcm2711 set 20 a5        Set GPIO20 to ALT5 function (GPCLK0)
gpio-bcm2711 set 20 pu        Enable GPIO20 ~50k in-pad pull up
gpio-bcm2711 set 20 pd        Enable GPIO20 ~50k in-pad pull down
gpio-bcm2711 set 20 op        Set GPIO20 to be an output
gpio-bcm2711 set 20 dl        Set GPIO20 to output low/zero (must already be set as an output)
gpio-bcm2711 set 20 ip pd     Set GPIO20 to input with pull down
gpio-bcm2711 set 35 a0 pu     Set GPIO35 to ALT0 function (SPI_CE1_N) with pull up
gpio-bcm2711 set 20 op pn dh  Set GPIO20 to ouput with no pull and driving high

Page updated: October 24, 2025