rtl-sdr: Add start script file for rtl-tcp

One of the most common uses of the rtl-sdr suite on OpenWrt is to stream
data to a remote analyzer. This commit creates a /etc/init.d/ and
/etc/config entry for rtl-tcp, so that it can automatically launch on
startup.

Signed-off-by: Mike Miller <github@mikeage.net>

diff --git a/utils/rtl-sdr/Makefile b/utils/rtl-sdr/Makefile
index c716fb2ab7fc4e9ce6bff9d53809879db5f28ed1..37e7f848a738f1fd15b13aded17c8b76fd88444e 100644 (file)
--- a/utils/rtl-sdr/Makefile
+++ b/utils/rtl-sdr/Makefile
@@ -8,7 +8,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=rtl-sdr
 PKG_VERSION:=0.5.3-20150608-$(PKG_SOURCE_VERSION)
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=git://git.osmocom.org/rtl-sdr.git
@@ -81,6 +81,10 @@ endef
 define Package/rtl-sdr/install
        $(INSTALL_DIR) $(1)/usr/bin
        $(CP) $(PKG_INSTALL_DIR)/usr/bin/rtl_* $(1)/usr/bin/
+       $(INSTALL_DIR) $(1)/etc/init.d
+       $(INSTALL_BIN) files/rtl_tcp.init $(1)/etc/init.d/rtl_tcp
+       $(INSTALL_DIR) $(1)/etc/config
+       $(INSTALL_CONF) files/rtl_tcp.config $(1)/etc/config/rtl_tcp
 endef
 
 define Package/librtlsdr/install

diff --git a/utils/rtl-sdr/files/rtl_tcp.config b/utils/rtl-sdr/files/rtl_tcp.config
new file mode 100644 (file)
index 0000000..95998aa
--- /dev/null
+++ b/utils/rtl-sdr/files/rtl_tcp.config
@@ -0,0 +1,12 @@
+config rtl_tcp main
+       option disabled '1'
+       option respawn '1'
+       option device_index ''
+       option address '0.0.0.0'
+       option port ''
+       option frequency ''
+       option gain ''
+       option samplerate ''
+       option buffers '8'
+       option num_linked_lists '8'
+       option ppm_error ''

diff --git a/utils/rtl-sdr/files/rtl_tcp.init b/utils/rtl-sdr/files/rtl_tcp.init
new file mode 100755 (executable)
index 0000000..4204787
--- /dev/null
+++ b/utils/rtl-sdr/files/rtl_tcp.init
@@ -0,0 +1,64 @@
+#!/bin/sh /etc/rc.common
+# Copyright (C) 2016 OpenWrt.org
+
+START=90
+STOP=10
+USE_PROCD=1
+
+append_arg() {
+       local cfg="$1"
+       local var="$2"
+       local opt="$3"
+       local def="$4"
+       local val
+
+       config_get val "$cfg" "$var"
+       [ -n "$val" -o -n "$def" ] && procd_append_param command $opt "${val:-$def}"
+}
+
+append_bool() {
+       local cfg="$1"
+       local var="$2"
+       local opt="$3"
+       local def="$4"
+       local val
+
+       config_get_bool val "$cfg" "$var" "$def"
+       [ "$val" = 1 ] && procd_append_param command "$opt"
+}
+
+
+start_instance() {
+       local cfg="$1"
+       local aux
+
+       config_get_bool aux "$cfg" 'disabled' '0'
+       [ "$aux" = 1 ] && return 1
+
+       procd_open_instance
+
+       procd_set_param command /usr/bin/rtl_tcp
+       append_arg "$cfg" device_index "-d"
+       append_arg "$cfg" address "-a"
+       append_arg "$cfg" port "-p"
+       append_arg "$cfg" frequency "-f"
+       append_arg "$cfg" gain "-g"
+       append_arg "$cfg" samplerate "-s"
+       append_arg "$cfg" buffers "-b"
+       append_arg "$cfg" num_linked_lists "-n"
+       append_arg "$cfg" ppm_error "-P"
+
+       config_get_bool aux "$cfg" 'respawn' '0'
+       [ "$aux" = 1 ] && procd_set_param respawn
+
+       procd_close_instance
+}
+
+service_triggers() {
+       procd_add_reload_trigger "rtl_tcp"
+}
+
+start_service() {
+       config_load rtl_tcp
+       config_foreach start_instance rtl_tcp
+}