mirror of https://github.com/aredn/aredn.git
122 lines
4.4 KiB
Lua
Executable File
122 lines
4.4 KiB
Lua
Executable File
--[[
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Part of AREDN® -- Used for creating Amateur Radio Emergency Data Networks
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Copyright (C) 2024 Tim Wilkinson
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See Contributors file for additional contributors
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation version 3 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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Additional Terms:
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Additional use restrictions exist on the AREDN® trademark and logo.
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See AREDNLicense.txt for more info.
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Attributions to the AREDN® Project must be retained in the source code.
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If importing this code into a new or existing project attribution
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to the AREDN® project must be added to the source code.
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You must not misrepresent the origin of the material contained within.
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Modified versions must be modified to attribute to the original source
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and be marked in reasonable ways as differentiate it from the original
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version
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--]]
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local app = {}
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local CONFIG0 = "/etc/config.mesh/gpsd"
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local CONFIG1 = "/etc/config/gpsd"
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local CHANGEMARGIN = 0.0001
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function app.run()
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wait_for_ticks(60)
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local gps
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while true
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do
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gps = aredn.hardware.gps_find()
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if gps then
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break
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end
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wait_for_ticks(600) -- 10 minutes
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end
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-- Create the GPSD daemon if device is local,
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-- otherwise we get the GPS info from another node on our local network
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if gps:match("^/dev/") then
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local f = io.open(CONFIG0, "w")
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f:write(
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[[config gpsd 'core'
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option enabled '1'
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option device ']] .. gps .. [['
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option port '2947'
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option listen_globally '1'
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]])
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f:close()
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filecopy(CONFIG0, CONFIG1, true)
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os.execute("nft insert rule ip fw4 input_dtdlink tcp dport 2947 accept comment \"gpsd\" 2> /dev/null")
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os.execute("/etc/init.d/gpsd restart")
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end
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while true
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do
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local c = uci.cursor()
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local j = aredn.hardware.gps_read_llt(gps)
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-- Update time and date
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if c:get("aredn", "@time[0]", "gps_enable") == "1" and j.time then
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os.execute("/bin/date -u -s '" .. j.time .. "' > /dev/nul 2>&1")
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write_all("/tmp/timesync", "gps")
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end
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-- Set location if significantly changed
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if c:get("aredn", "@location[0]", "gps_enable") == "1" then
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local clat = tonumber(c:get("aredn", "@location[0]", "lat") or 0)
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local clon = tonumber(c:get("aredn", "@location[0]", "lon") or 0)
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if math.abs(clat - j.lat) > CHANGEMARGIN or math.abs(clon - j.lon) > CHANGEMARGIN then
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nixio.syslog("notice", "Updating lat/lon: " .. j.lat .. "," .. j.lon)
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-- Calculate gridsquare from lat/lon
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local alat = j.lat + 90
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local flat = 65 + math.floor(alat / 10)
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local slat = math.floor(alat % 10)
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local ulat = 97 + math.floor((alat - math.floor(alat)) * 60 / 2.5)
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local alon = j.lon + 180
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local flon = 65 + math.floor(alon / 20)
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local slon = math.floor((alon / 2) % 10)
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local ulon = 97 + math.floor((alon - 2 * math.floor(alon / 2)) * 60 / 5)
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local gridsquare = string.format("%c%c%d%d%c%c", flon, flat, slon, slat, ulon, ulat)
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-- Update location information
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c:set("aredn", "@location[0]", "lat", j.lat)
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c:set("aredn", "@location[0]", "lon", j.lon)
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c:set("aredn", "@location[0]", "gridsquare", gridsquare)
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c:set("aredn", "@location[0]", "source", "gps")
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c:commit("aredn")
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local cm = uci.cursor("/etc/config.mesh")
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cm:set("aredn", "@location[0]", "lat", j.lat)
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cm:set("aredn", "@location[0]", "lon", j.lon)
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cm:set("aredn", "@location[0]", "gridsquare", gridsquare)
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cm:set("aredn", "@location[0]", "source", "gps")
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cm:commit("aredn")
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end
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end
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wait_for_ticks(600) -- 10 minutes
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end
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end
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return app.run
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