periph-info

periph-info

Prints the lists of drivers that were loaded, the ones skipped and the one that failed to load, if any.

• Looking for the GPIO pins per functionality? Look at gpio-list.
• Looking for the location of the pin on the header to connect your GPIO? Look at headers-list.

Example

On a Raspberry Pi running Raspbian:

$ periph-info
Drivers loaded and their dependencies, if any:
- bcm283x
- rpi          : [bcm283x]
- sysfs-gpio
- sysfs-i2c
- sysfs-led
- sysfs-spi
- sysfs-thermal
Drivers skipped and the reason why:
- allwinner   : Allwinner CPU not detected
- allwinner_pl: dependency not loaded: "allwinner"
- pine64      : dependency not loaded: "allwinner_pl"
Drivers failed to load and the error:
  <none>

On a Pine64 running Armbian running as a user (not root):

$ periph-info
Drivers loaded and their dependencies, if any:
- pine64       : [allwinner_pl]
- sysfs-i2c
- sysfs-thermal
Drivers skipped and the reason why:
- bcm283x  : bcm283x CPU not detected
- rpi      : dependency not loaded: "bcm283x"
- sysfs-led: no LED found
- sysfs-spi: no SPI port found
Drivers failed to load and the error:
- allwinner   : need more access, try as root: open /dev/mem: permission denied
- allwinner_pl: need more access, try as root: open /dev/mem: permission denied
- sysfs-gpio  : need more access, try as root or setup udev rules: open /sys/class/gpio/export: permission denied

On a Pine64 running Armbian as root:

$ sudo periph-info
Drivers loaded and their dependencies, if any:
- allwinner
- allwinner_pl : [allwinner]
- pine64       : [allwinner_pl]
- sysfs-gpio
- sysfs-i2c
- sysfs-thermal
Drivers skipped and the reason why:
- bcm283x  : bcm283x CPU not detected
- rpi      : dependency not loaded: "bcm283x"
- sysfs-led: no LED found
- sysfs-spi: no SPI port found
Drivers failed to load and the error:
  <none>

On some platforms, more driver can be loaded when running as root, improving performance and adding some features, like input pull resistor support.