Module Rpi.Gpio

module Gpio: sig .. end

GPIO pins.

References

GPIO Raspberry Pi documentation.
Section 6 of the BCM2835 ARM Peripheral specification (PDF).

Pins

type pin =

`\|`	`P00`
`\|`	`P01`
`\|`	`P02`
`\|`	`P03`
`\|`	`P04`
`\|`	`P05`
`\|`	`P06`
`\|`	`P07`
`\|`	`P08`
`\|`	`P09`
`\|`	`P10`
`\|`	`P11`
`\|`	`P12`
`\|`	`P13`
`\|`	`P14`
`\|`	`P15`
`\|`	`P16`
`\|`	`P17`
`\|`	`P18`
`\|`	`P19`
`\|`	`P20`
`\|`	`P21`
`\|`	`P22`
`\|`	`P23`
`\|`	`P24`
`\|`	`P25`
`\|`	`P26`
`\|`	`P27`
`\|`	`P28`
`\|`	`P29`
`\|`	`P30`
`\|`	`P31`
`\|`	`P32`
`\|`	`P33`
`\|`	`P34`
`\|`	`P35`
`\|`	`P36`
`\|`	`P37`
`\|`	`P38`
`\|`	`P39`
`\|`	`P40`
`\|`	`P41`
`\|`	`P42`
`\|`	`P43`
`\|`	`P44`
`\|`	`P45`
`\|`	`P46`
`\|`	`P47`
`\|`	`P48`
`\|`	`P49`
`\|`	`P50`
`\|`	`P51`
`\|`	`P52`
`\|`	`P53`

The type for GPIO pins.

Pin setup

type func =

`\|`	`F_IN`
`\|`	`F_OUT`
`\|`	`F_ALT5`
`\|`	`F_ALT4`
`\|`	`F_ALT0`
`\|`	`F_ALT1`
`\|`	`F_ALT2`
`\|`	`F_ALT3`

The type for pin functions.

val set_func : pin -> func -> unit

set p func sets the function of pin p to func.

type pull_state =

`\|`	`PULL_OFF`
`\|`	`PULL_DOWN`
`\|`	`PULL_UP`

The type for pin pull state.

val set_pull_state : pin -> pull_state -> unit

set p state sets the pull state of pin p to state.

Read and write

val get : pin -> bool

get p is the current value of pin p.

val set : pin -> bool -> unit

set p v sets the value of pin p to v.