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
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