pigpio/pigpiod.1

." Process this file with
." groff -man -Tascii pigpiod.1
."
.TH pigpiod 1 2012-2015 Linux "pigpio archive"
.SH NAME
pigpiod - A utility to start the pigpio library as a daemon.

.SH SYNOPSIS

sudo pigpiod [OPTION]...
.SH DESCRIPTION

pigpiod is a utility which launches the pigpio library as a daemon.
.br

.br
Once launched the pigpio library runs in the background accepting commands from the pipe and socket interfaces.
.br

.br
The pigpiod utility requires sudo privileges to launch the library but thereafter the pipe and socket commands may be issued by normal users.
.br

.br
pigpiod accepts the following configuration options
.br

.br
.SH OPTIONS

.IP "\fB-a value\fP"
DMA memory allocation mode
0=AUTO, 1=PMAP, 2=MBOX
default AUTO

.IP "\fB-b value\fP"
gpio sample buffer in milliseconds
100-10000
default 120

.IP "\fB-c value\fP"
library internal settings

default 0

.IP "\fB-d value\fP"
primary DMA channel
0-14
default 14

.IP "\fB-e value\fP"
secondary DMA channel
0-6
default 5

.IP "\fB-f\fP"
disable fifo interface

default enabled

.IP "\fB-k\fP"
disable socket interface

default enabled

.IP "\fB-p value\fP"
socket port
1024-32000
default 8888

.IP "\fB-s value\fP"
sample rate
1, 2, 4, 5, 8, 10
default 5

.IP "\fB-t value\fP"
clock peripheral
0=PWM 1=PCM
default PCM

.IP "\fB-x mask\fP"
gpios which may be updated
A 54 bit mask with (1<<n) set if the user may update gpio #n.
default is the set of user gpios for the board revision

.br

.br
.SS Example
.br

.br

.EX
sudo pigpiod -s 2 -b 200 -f
.br

.EE

.br

.br
Launch the pigpio library with a sample rate of 2 microseconds and a 200 millisecond buffer.  Disable the fifo interface.

.br

.br
.SS Permissions
.br

.br
pigpio provides a rudimentary permissions system for commands issued via the socket and pipe interfaces.

.br

.br
All gpios may be read.

.br

.br
Only the user gpios for the board type or those specified by the -x option may be updated.

.br

.br

.EX
Type 1 boards 0x03E6CF93
.br
Type 2 boards 0xFBC6CF9C
.br
Type 3 boards 0x0FFFFFFC
.br

.EE

.br

.br
In this context an update includes the following:

.br

.br
gpio mode set
.br
gpio pull/up down
.br
gpio write
.br
gpio set PWM (including range and frequency)
.br
gpio set servo

.br

.br
In addition the bank clear and set commands, and the wave commands will only
affect updateable gpios.

.br

.br
There are several special cases.

.br

.br
The activity LED (green) may be written (gpio 16 for type 1 and 2
boards, gpio 47 for type 3 boards)

.br

.br
The power LED (red) may be written on type 3 boards (gpio 35).

.br

.br
The high USB power mode gpio may be written (gpio 38 for type 3 boards).

.SH SEE ALSO

pig2vcd(1), pigs(1), pigpio(3), pigpiod_if(3), pigpiod_if2(3)
.SH AUTHOR

joan@abyz.co.uk