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pi-blaster: Added recipe
This project enables PWM on the GPIO pins you request of a Raspberry Pi. The technique used is extremely efficient: does not use the CPU and gives very stable pulses Patches have been provided to build pi-blaster using autotools, and to remove startup script dependencies on the lsb. Change-Id: Ie1bec0702e4520d24e4f024aafff14ddef825589 Signed-off-by: Alex J Lennon <ajlennon@dynamicdevices.co.uk>
This commit is contained in:
Alex J Lennon
@@ -0,0 +1,77 @@
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Add autotools configuration files to simplify cross-compilation
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Upstream-Status: Submitted [https://github.com/sarfata/pi-blaster/pull/25]
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Signed-off-by: Alex Lennon <ajlennon@dynamicdevices.co.uk>
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diff -Nur git.org/Makefile git.new/Makefile
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--- git.org/Makefile 2014-06-11 15:42:26.490930706 +0100
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+++ git.new/Makefile 1970-01-01 01:00:00.000000000 +0100
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@@ -1,23 +0,0 @@
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-.PHONY: all
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-all: pi-blaster
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-
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-REVISION=$(shell egrep -q '000f$$' /proc/cpuinfo && echo 2 || echo 1)
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-
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-pi-blaster: pi-blaster.c
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- gcc -Wall -g -O2 -o $@ $< -DREVISION=$(REVISION)
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-
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-clean:
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- rm -f pi-blaster
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-
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-install: pi-blaster
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- cp -f pi-blaster.boot.sh /etc/init.d/pi-blaster
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- chmod +x /etc/init.d/pi-blaster
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- cp -f pi-blaster /usr/sbin/pi-blaster
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- update-rc.d pi-blaster defaults
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- /etc/init.d/pi-blaster start
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-
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-uninstall:
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- -/etc/init.d/pi-blaster stop
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- rm /usr/sbin/pi-blaster
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- rm /etc/init.d/pi-blaster
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- update-rc.d pi-blaster remove
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diff -Nur git.org/Makefile.am git.new/Makefile.am
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--- git.org/Makefile.am 1970-01-01 01:00:00.000000000 +0100
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+++ git.new/Makefile.am 2014-06-11 15:40:16.562930372 +0100
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@@ -0,0 +1,9 @@
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+AUTOMAKE_OPTIONS = foreign
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+
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+CFLAGS = -Wall -pedantic
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+
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+sbin_PROGRAMS = pi-blaster
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+pi_blaster_SOURCES = pi-blaster.c
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+
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+init_ddir = $(sysconfdir)/init.d
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+init_d_SCRIPTS = pi-blaster.boot.sh
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diff -Nur git.org/autogen.sh git.new/autogen.sh
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--- git.org/autogen.sh 1970-01-01 01:00:00.000000000 +0100
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+++ git.new/autogen.sh 2014-06-11 15:35:57.798929684 +0100
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@@ -0,0 +1,9 @@
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+#!/bin/sh
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+
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+echo "Generating configure files... may take a while."
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+
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+autoreconf --install --force && \
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+ echo "Preparing was successful if there was no error messages above." && \
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+ echo "Now type:" && \
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+ echo " ./configure && make" && \
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+ echo "Run './configure --help' for more information"
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diff -Nur git.org/configure.ac git.new/configure.ac
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--- git.org/configure.ac 1970-01-01 01:00:00.000000000 +0100
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+++ git.new/configure.ac 2014-06-11 15:35:53.154929717 +0100
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@@ -0,0 +1,14 @@
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+# -*- Autoconf -*-
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+# Process this file with autoconf to produce a configure script.
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+
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+AC_PREREQ([2.69])
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+AC_INIT(pi-blaster, 0.1.0)
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+AC_CONFIG_SRCDIR([pi-blaster.c])
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+AC_CONFIG_HEADERS([config.h])
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+AM_INIT_AUTOMAKE
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+
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+# Checks for programs.
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+AC_PROG_CC
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+
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+AC_CONFIG_FILES([Makefile])
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+AC_OUTPUT
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@@ -0,0 +1,77 @@
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Remove dependencies on LSB functions
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Upstream-Status: Inappropriate [configuration]
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Signed-off-by: Alex Lennon <ajlennon@dynamicdevices.co.uk>
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diff -ur git.org/pi-blaster.boot.sh git/pi-blaster.boot.sh
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--- git.org/pi-blaster.boot.sh 2014-05-20 14:49:44.378582168 +0100
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+++ git/pi-blaster.boot.sh 2014-05-20 14:51:08.330582386 +0100
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@@ -28,12 +28,12 @@
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[ -r /etc/default/$NAME ] && . /etc/default/$NAME
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# Load the VERBOSE setting and other rcS variables
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-. /lib/init/vars.sh
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+#. /lib/init/vars.sh
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# Define LSB log_* functions.
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# Depend on lsb-base (>= 3.2-14) to ensure that this file is present
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# and status_of_proc is working.
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-. /lib/lsb/init-functions
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+#. /lib/lsb/init-functions
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#
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# Function that starts the daemon/service
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@@ -77,48 +77,23 @@
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case "$1" in
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start)
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- [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME"
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+ [ "$VERBOSE" != no ] && echo "Starting $DESC" "$NAME"
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do_start
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- case "$?" in
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- 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
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- 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
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- esac
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;;
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stop)
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- [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME"
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+ [ "$VERBOSE" != no ] && echo "Stopping $DESC" "$NAME"
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do_stop
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- case "$?" in
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- 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;;
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- 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;;
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- esac
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- ;;
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- status)
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- status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $?
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;;
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restart|force-reload)
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#
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# If the "reload" option is implemented then remove the
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# 'force-reload' alias
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#
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- log_daemon_msg "Restarting $DESC" "$NAME"
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do_stop
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- case "$?" in
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- 0|1)
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- do_start
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- case "$?" in
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- 0) log_end_msg 0 ;;
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- 1) log_end_msg 1 ;; # Old process is still running
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- *) log_end_msg 1 ;; # Failed to start
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- esac
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- ;;
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- *)
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- # Failed to stop
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- log_end_msg 1
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- ;;
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- esac
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+ do_start
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;;
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*)
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- echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2
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+ echo "Usage: $SCRIPTNAME {start|stop|restart}" >&2
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exit 3
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;;
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esac
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