require "wm_util"
+io.stdout:setvbuf('no')
+
+function dump(o)
+ if type(o) == 'table' then
+ local s = '{ '
+ for k,v in pairs(o) do
+ if type(k) ~= 'number' then k = '"'..k..'"' end
+ s = s .. '['..k..'] = ' .. dump(v) .. ','
+ end
+ return s .. '} '
+ else
+ return tostring(o)
+ end
+end
+
function get_device_list(config_name)
local devices
end
-function init_device(device,parameters,i2c_bus)
+function get_parameter(record)
+ return tonumber(get_file_content(record["path"])) * record["scale"] + record["correction"]
+end
+
+function string.fromhex(str)
+ return (str:gsub('..', function (cc)
+ return string.char(tonumber(cc, 16))
+ end))
+end
+
+function string.tohex(str)
+ return (str:gsub('.', function (c)
+ return string.format('%02X', string.byte(c))
+ end))
+end
+
+function get_mhz(record)
+ local p = record["rs232"]
+ p:read(9,100)
+ p:write(string.fromhex("ff0186000000000079"))
+ local e, s = p:read(9,1000)
+ if (e == 0) and (s:len() == 9) and (s:byte(1) == 255) then
+ local crc = 0
+ for i = 2, 8 do
+ crc = crc + s:byte(i)
+ if (crc>=256) then
+ crc = crc - 256
+ end
+ end
+ crc = 255 - crc
+ crc = crc + 1;
+ if crc == s:byte(9) then
+ return s:byte(3)*256+s:byte(4)
+ end
+ end
+
+ return nil
+
+end
+
+function search_rs232_const(rs232,prefix,value)
+
+ for k,v in pairs(rs232) do
+
+ if k == prefix..value:upper() then
+ return v
+ end
+
+ end
+
+ return nil
+
+end
+
+function init_serial_device(device,subsystem,parameters)
+
+ rs232 = require("luars232")
+
+ pcall(function ()
+
+ local e, port = rs232.open(device["port"])
+
+ local baud = device["baud"]; if baud == nil then baud = 9600; end
+ local bits = device["bits"]; if bits == nil then bits = 8; end
+ local stop_bits = device["stop_bits"]; if stop_bits == nil then stop_bits = 1; end
+ local parity = device["parity"]; if parity == nil then parity = "NONE"; end
+ local flowctl = device["flowctl"]; if flowctl == nil then flowctl = "OFF"; end
+
+ assert(port:set_baud_rate(search_rs232_const(rs232,"RS232_BAUD_",baud)) == rs232.RS232_ERR_NOERROR)
+ assert(port:set_data_bits(search_rs232_const(rs232,"RS232_DATA_",bits)) == rs232.RS232_ERR_NOERROR)
+ assert(port:set_parity(search_rs232_const(rs232,"RS232_PARITY_",parity)) == rs232.RS232_ERR_NOERROR)
+ assert(port:set_stop_bits(search_rs232_const(rs232,"RS232_STOP_",stop_bits)) == rs232.RS232_ERR_NOERROR)
+ assert(port:set_flow_control(search_rs232_const(rs232,"RS232_FLOW_",flowctl)) == rs232.RS232_ERR_NOERROR)
+
+ getparameter = {}
+
+ getparameter["rs232"] = port
+
+ if subsystem == "mhz" then
+
+ getparameter["function"] = get_mhz
+ getparameter["name"] = "CO2PPM"
+ getparameter["sensor"] = "MHZ19"
+ parameters[#parameters+1] = getparameter
+
+ end
+
+ parameters[#parameters+1] = getparameter
+
+ end)
+
+end
+
+function init_i2c_device(device,subsystem,parameters)
if not i2c_bus then
i2c_bus = 0
end
- if device["module"] then
- os.execute("modprobe "..device["module"])
- end
+ pcall(function ()
+ local f = io.open("/sys/class/i2c-dev/i2c-"..i2c_bus.."/device/new_device","w")
+ io.output(f)
+ io.write(device["name"].." "..device["address"])
+ io.close(f)
+ end)
- if device["type"] then
+ device_path=find_device(device["name"],subsystem)
- devtype = split(device["type"],":")
- bus = devtype[1]
- subsystem = devtype[2]
-
- if (bus == "i2c") and device["address"] and device["name"] then
+ if device_path and device["set_param"] then
+ for key,record in pairs(device["set_param"]) do
+ setparam = split(record,":")
+ setpath = device_path.."/"..setparam[1]
pcall(function ()
- local f = io.open("/sys/class/i2c-dev/i2c-"..i2c_bus.."/device/new_device","w")
+ local f = io.open(setpath,"w")
io.output(f)
- io.write(device["name"].." "..device["address"])
+ io.write(setparam[2])
io.close(f)
end)
end
+ end
- device_path=find_device(device["name"],subsystem)
-
- if device_path and device["set_param"] then
- for key,record in pairs(device["set_param"]) do
- setparam = split(record,":")
- setpath = device_path.."/"..setparam[1]
- pcall(function ()
- local f = io.open(setpath,"w")
- io.output(f)
- io.write(setparam[2])
- io.close(f)
- end)
+ if device_path and device["parameter"] then
+
+ for key,record in pairs(device["parameter"]) do
+
+ getparam = split(record,":")
+ getparameter = {}
+ getparameter["path"] = device_path.."/"..getparam[1]
+ getparameter["name"] = getparam[2]
+ getscale = getparam[3]
+ getcorrection = getparam[4]
+ if not getscale then
+ getscale = 1
+ end
+ if not getcorrection then
+ getcorrection = 0
end
+ getparameter["scale"] = tonumber(getscale)
+ getparameter["sensor"] = device["name"]:upper()
+ getparameter["correction"] = tonumber(getcorrection)
+ getparameter["function"] = get_parameter
+ parameters[#parameters+1] = getparameter
+
end
+
+ end
+
+end
+
+function init_device(device,parameters)
+
+ if device["module"] then
+ os.execute("modprobe "..device["module"])
+ end
+
+ if device["type"] then
+
+ devtype = split(device["type"],":")
+ bus = devtype[1]
+ subsystem = devtype[2]
- if device_path and device["parameter"] then
+ if (bus == "i2c") then
+
+ init_i2c_device(device,subsystem,parameters)
- for key,record in pairs(device["parameter"]) do
+ elseif (bus == "serial") then
- getparam = split(record,":")
- getparameter = {}
- getparameter["path"] = device_path.."/"..getparam[1]
- getparameter["name"] = getparam[2]
- getscale = getparam[3]
- getcorrection = getparam[4]
- if not getscale then
- getscale = 1
- end
- if not getcorrection then
- getcorrection = 0
- end
- getparameter["scale"] = tonumber(getscale)
- getparameter["sensor"] = device["name"]:upper()
- getparameter["correction"] = tonumber(getcorrection)
-
- parameters[#parameters+1] = getparameter
-
- end
+ init_serial_device(device,subsystem,parameters)
end
device = get_device(config_name,devname)
if device then
- init_device(device,parameters,i2c_bus)
+ init_device(device,parameters)
end
end
end
-function get_parameter(parameter)
- return tonumber(get_file_content(parameter["path"])) * parameter["scale"] + parameter["correction"]
-end
-
function get_parameters(parameters)
local results = {}
for key,record in pairs(parameters) do
+
if not results[record["sensor"]] then
results[record["sensor"]] = {}
end
- results[record["sensor"]][record["name"]] = get_parameter(record)
+ pcall(function ()
+ results[record["sensor"]][record["name"]] = record["function"](record)
+ end)
end
+
return results
end
config_name = "weathermon"
end
-web_id = uci.get(config_name,"web","devid")
+web_id = get_devid(config_name)
parameters = init(config_name)
end
while true do
- if pcall(function () values = get_parameters(parameters) end) then
+ values = get_parameters(parameters)
records = {}
records[web_id] = {}
for key,record in pairs(values) do
value["device"] = key
print(json.encode(value))
end
- end
socket.sleep(delay)
end
-
\ No newline at end of file
projects / weathermon.git / blobdiff