From 4bea2d73a5de0f8ec83c61edc37653718d34f31b Mon Sep 17 00:00:00 2001
From: Clément Bénier <clement.benier@iot.bzh>
Date: Mon, 28 May 2018 14:32:22 +0200
Subject: initial commit: draft work in progress
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Change-Id: I8c0c17c66a484df9bc152046466d80224cf65498
Signed-off-by: Clément Bénier <clement.benier@iot.bzh>
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+# Radio Service
+
+## Overview
+
+Accelera Service allows getting data from acceleration, gyroscope and
+electronic compass.
+
+## Verbs
+
+| Name               | Description                                 | JSON Parameters                                                   |
+|:-------------------|:-------------------- -----------------------|:---------------------------------------------------------------   |
+| subscribe          | subscribe to accelero events                | *Request:* {"event": "accel"} {"event": "magn"} {"event":anglvel"}|
+| unsubscribe        | unsubscribe to accelero events              | *Request:* {"event": "accel"} {"event": "magn"} {"event":anglvel"}|
+
+## Events
+
+There are 3 different events matching with the different sensor available.
+
+* "accel": is for acceleration data
+* "magn": is for gyroscope data
+* "anglvel": is for  data
+
+### frequency Event JSON Response
+
+JSON response has a single field **frequency** which is the currently tuned frequency.
+
+### station_found Event JSON Response
+
+JSON response has a single field **value** of the frequency of the discovered radio station.
+
+# AGL Radio Tuner Binding
+
+## FM Band Plan Selection
+
+The FM band plan may be selected by adding:
+```
+fmbandplan=X
+```
+to the [radio] section in /etc/xdg/AGL.conf, where X is one of the
+following strings:
+
+US = United States / Canada
+JP = Japan
+EU = European Union
+ITU-1
+ITU-2
+
+Example:
+```
+[radio]
+fmbandplan=JP
+```
+
+## Implementation Specific Confguration
+
+### USB RTL-SDR adapter
+
+The scanning sensitivity can be tweaked by adding:
+```
+scan_squelch_level=X
+```
+to the [radio] section in /etc/xdg/AGL.conf, where X is an integer.  Lower
+values make the scanning more sensitive.  Default value is 140.
+
+Example:
+```
+[radio]
+scan_squelch_level=70
+```
+
+### M3ULCB Kingfisher Si4689
+
+## Known Issues
+
+### M3ULCB Kingfisher
+
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