updates that remove sonar stuff

credentials.lua.example

@@ -1,2 +0,0 @@
-SSID="something"
-PASSWORD="yourpassword"

flash.sh

@@ -1,11 +1,14 @@
 nodemcu-tool reset
-esptool.py erase_flash
+esptool.py --port /dev/ttyUSB0 erase_flash
-esptool.py --port /dev/ttyUSB0 write_flash -fm qio 0x00000 firmware/nodemcu-release-19-modules-2021-11-10-19-19-06-float.bin
+esptool.py --port /dev/ttyUSB0 write_flash -fm qio 0x00000 firmware/firmware.bin
 
-nodemcu-tool upload *.lua libs/*
+CONN_DELAY=1000
+
+nodemcu-tool --connection-delay $CONN_DELAY upload *.lua libs/*
+#nodemcu-tool upload *.lua libs/*
 
 while [[ $? != 0 ]]; do
-  nodemcu-tool upload *.lua libs/*
+  nodemcu-tool --connection-delay $CONN_DELAY upload *.lua libs/*
 done
-
+#
-echo 'dofile("init.lua")' | nodemcu-tool terminal
+echo 'dofile("init.lua")' | nodemcu-tool --connection-delay $CONN_DELAY terminal

init.lua

@@ -1,293 +1,184 @@
 -- Never change these unless the board changes
-echo_pin = 2
+trig_pin = 5
-trig_pin = 3
-light_pin = 5
-
-use_sonar = false
 light_on = false
 
-if adc.force_init_mode(adc.INIT_ADC)
+function reset_light()
-then
+  gpio.write(trig_pin, gpio.LOW)
-  node.restart()
+  tmr.delay(100000)
-  return -- don't bother continuing, the restart is scheduled
+  gpio.write(trig_pin, gpio.HIGH)
+  tmr.delay(100000)
+  gpio.write(trig_pin, gpio.LOW)
 end
 
-print("System voltage (mV):", adc.readvdd33(0))
-
-gpio.mode(light_pin, gpio.OUTPUT)
-gpio.mode(echo_pin, gpio.INT) -- interrupt mode
-gpio.mode(trig_pin, gpio.OUTPUT)
-gpio.write(light_pin, gpio.HIGH)
-
 function toggle_light()
-  if light_on then
+  print("toggling")
-    gpio.write(light_pin, gpio.HIGH)
+  reset_light()
-  else
-    gpio.write(light_pin, gpio.LOW)
-  end
   light_on = not light_on
+  file.putcontents("./light_status", light_on and "on" or "off")
 end
 
 function turn_light_on()
-  gpio.write(light_pin, gpio.LOW)
+  if not light_on then
-end
+    toggle_light()
-
-function turn_light_off()
-  gpio.write(light_pin, gpio.HIGH)
   end
-
-function tablelen(T)
-  local count = 0
-  for _ in pairs(T) do count = count + 1 end
-  return count
 end
 
-samples = {}
+function turn_light_off()
-distance = {start_v=0.0, end_v=0.0}
+  if light_on then
-
+    toggle_light()
-sample_rate = 4 -- number of samples it requires before triggering, recommended <= 5, >=3
-max_stderr = 0.5 -- margin of error allowed before triggering the light, recommended <= 1
-distance_max = 30 -- threshold for how far an object must be to trigger it in cm
-distance_min = 10 -- minimum distance (below this amount don't trigger it), recommended >= 5, <= 20
-
--- Get the mean value of a table
-function mean(t)
-  -- http://lua-users.org/wiki/SimpleStats
-  local sum = 0
-  local count = 0
-
-  for k,v in pairs(t) do
-    if type(v) == 'number' then
-      sum = sum + v
-      count = count + 1
-    end
   end
-  return (sum / count)
 end
 
-function stdev(t)
+light_status = file.getcontents("./light_status")
-  -- http://lua-users.org/wiki/SimpleStats
+if light_status == "on" then
-  local m
+  turn_light_on()
-  local vm
-  local sum = 0
-  local count = 0
-  local result
-
-  m = mean(t)
-
-  for k, v in pairs(t) do
-    if type(v) == 'number' then
-      vm = v - m
-      sum = sum + (vm * vm)
-      count = count + 1
-    end
 end
+print("Booted up")
 
-  result = math.sqrt(sum / (count-1))
+gpio.mode(trig_pin, gpio.OUTPUT)
+gpio.write(trig_pin, gpio.LOW)
 
-  return result
+function hex_to_char(x)
+  return string.char(tonumber(x, 16))
 end
 
-function stderr(t)
+function get_time()
-  -- based on the definition of standard error
+  local t = tmr.time()
-  return stdev(t) / math.sqrt(tablelen(t))
+  local hours = t/3600
+  local seconds_leftover = t % 3600
+  return tostring(hours) .. " hours, " .. tostring(minutes_leftover)
 end
 
-function measure(level, ts, evcount)
+function urldecode(url)
-  if level == 1 then
+  if url == nil then
-    distance["start_v"] = ts
-  else
-    -- check if there's a low voltage but no starting high voltage
-    if distance["start_v"] > 0 then
-      distance["end_v"] = ts
-
-      if distance["start_v"] >= distance["end_v"] then
-        distance = {start_v=0.0, end_v=0.0} -- bad reading
     return
   end
-
+  url = url:gsub("+", " ")
-      -- See https://www.adafruit.com/product/165
+  url = url:gsub("%%(%x%x)", hex_to_char)
-      local temperature = ((adc.read(0)*100)-50)/1000
+  return url
-
-      -- See http://hyperphysics.phy-astr.gsu.edu/hbase/Sound/souspe.html
-      local speed_of_sound = (331.4 + 0.6*temperature)/10000
-
-      -- See https://randomnerdtutorials.com/esp8266-nodemcu-hc-sr04-ultrasonic-arduino/
-      local d = ((distance["end_v"] - distance["start_v"]) * speed_of_sound) / 2.0
-
-      -- Only care about values between 10 and 50
-      if math.floor(d) > distance_min and d < distance_max then
-        table.insert(samples, d)
-        local s = stderr(samples)
-        if s > max_stderr and tablelen(samples) == (sample_rate - 1) then -- start over if it would cause stderr to be too great
-          samples = {}
-          distance = {start_v=0.0, end_v=0.0}
 end
 
+function get_info(group)
+  local info = node.info(group)
+  local result = "<table><thead><tr><th colspan='2'>" .. tostring(group) .. "</th></thead><tbody>"
+  for key, value in pairs(info) do
+    result = result .. "<tr><td>" .. tostring(key) .. "</td><td>" .. tostring(value) .. "</td></tr>"
   end
-      distance = {start_v=0, end_v=0}
-    end
-  end
-
-  local s_num = tablelen(samples)
 
-  if s_num >= sample_rate then
+  return result .. "</tbody></table>"
-    local distance_mean = mean(samples)
-    local s = stderr(samples)
-    if s < max_stderr and distance_mean < distance_max and distance_mean > distance_min then
-      print("stder = " .. s)
-      print("distance = " .. distance_mean)
-      if not light_on then
-        toggle_light()
-      end
-    end
-    samples = {}
-  end
 end
 
-function trig()
-  gpio.write(trig_pin, gpio.HIGH)
-  tmr.delay(11)
-  gpio.write(trig_pin, gpio.LOW)
-end
-
--- load credentials, 'SSID' and 'PASSWORD' declared and initialize in there
-dofile("credentials.lua")
 
 function startup()
-
+    sntp.sync(
+      nil,
+      function(sec, usec, server, info)
+        print('synced ntp ', sec, usec, server)
+      end,
+      function()
+        print('failed to sync ntp')
+      end,
+      1 -- auto-repeat sync
+    )
     if file.open("init.lua") == nil then
         print("init.lua deleted or renamed")
     else
-        print("Running")
+        cron_error = nil
         file.close("init.lua")
-
         print("Starting up")
-        sntp.sync(nil,
-          function(sec, usec, server, info)
-            print("sync'd")
-
-            tm = rtctime.epoch2cal(rtctime.get())
 
-            print(tm["hour"])
+        require("httpserver").createServer(8080, function(req, res)
-            print(tm["min"])
+          --print("+R", req.method, req.url, node.heap())
 
-            if tm["hour"] >= 12 or tm["hour"] < 2 then
+          req.ondata = function(self, chunk)
-              if tm["hour"] == 12 and tm["min"] < 30 then
+            --print("+B", chunk and #chunk, node.heap())
-                return
-              end
-              turn_light_on()
-            end
-
-            if tm["hour"] >= 2 and tm["hour"] < 12 then
-              turn_light_off()
-            end
-
-            cron.schedule("0 02 * * *", function(e) -- 9 pm EST is 2 UTC
-              print("Turning light off")
-              turn_light_off()
-            end)
-
-            cron.schedule("30 12 * * *", function(e) -- 7:30 am EST is 12:30 UTC
-              print("Turning light on")
-              turn_light_on()
-            end)
-
-            if use_sonar then
-              tmr.create():alarm(61, tmr.ALARM_AUTO, trig)
-              gpio.trig(echo_pin, "both", measure)
-            end
-          end,
-        nil, 1)
-
-        require("httpserver").createServer(80, function(req, res)
-          print("+R", req.method, req.url, node.heap())
-
-          req.onheader = function(self, name, value) -- luacheck: ignore
-            print("+H", name, value)
-          end
-          -- setup handler of body, if any
-          req.ondata = function(self, chunk) -- luacheck: ignore
-            print("+B", chunk and #chunk, node.heap())
             print(req.url)
-            if not chunk then
+            if chunk ~= nil then
-              -- reply
-              res:send(nil, 200)
-              res:send_header("Connection", "close")
               if req.url == "/toggle" then
                 toggle_light()
               elseif req.url == "/on" then
                 turn_light_on()
               elseif req.url == "/off" then
                 turn_light_off()
-              elseif req.url == "/toggle_sonar" then
+              elseif req.url == "/add_job" then
-                use_sonar = not use_sonar
+                post_data = urldecode(chunk)
+                if string.len(post_data) > 6 then
+                  local a, b = string.find(post_data, "=")
+                  local cron_expression = post_data:sub(a+1)
+
+                  local ran, error_msg = pcall(cron.schedule, cron_expression, toggle_light)
+                  print(error_msg)
+                else
+                  ran = false
+                  error_msg = "invalid"
                 end
 
-              res:send("The light is " .. (light_on and "on\n" or "off\n"))
+                if not ran then
-              res:finish()
+                  print("post_data = " .. post_data)
+                  cron_error = error_msg
                 end
+              elseif req.url == "/reset_light" then
+                reset_light()
+              elseif req.url == "/clear_jobs" then
+                cron.reset()
+              elseif req.url == "/reboot" then
+                cron.reset()
+                node.restart()
               end
-        end)
-
             end
+            if not chunk then
+              local toggle_status = light_on and "On" or "Off"
+              local color = light_on and "green" or "black"
+              -- reply
+              if req.url == "/" then
+                res:send(nil, 200)
+                res:send_header("Content-Type", "text/html")
+                res:send_header("Connection", "close")
+                res:send("<style>.button{text-decoration:underline;}.body{padding:0; margin:0;}.par{display:flex;flex-direction:row;}.a{margin: auto;width:50%;}.b{margin: auto;width:50%;}</style><html><body><div class='par'><div class='a'><span>Uptime: ".. tostring(tmr.time()) .. " seconds</span><form action='/add_job' method='post'><div class='button'><label for='name'>Enter a cron expression (UTC)</label><input type='text' name='cron' id='cron' required></div><div><input type='submit' value='Add cron expression'></div></form><br/><form action='/clear_jobs' method='post'><button style=\"color:black;\">Clear Jobs</button></form><br/><form action='/toggle' method='post'><button style=\"color:black;\">Toggle</button><span style=\"color:" .. color .. ";\"> ".. toggle_status .. "</span></form><br/><form action='/reset_light' method='post'><button style=\"color:black;\">Reset Light</button></form><br/><form action='/reboot' method='post'><button style=\"color:red;\">Reboot</button></form><br/></div><div class='b'>" .. get_info("hw") .. get_info("build_config") .. get_info("sw_version") .. "</div></div></body></html>")
+                res:send("\r\n")
+              elseif req.url == "/toggle" or req.url == "/reset_light" then
+                res:send(nil, 303)
+                res:send_header("Location", "/")
+                res:send_header("Connection", "close")
+                res:send("switching light\r\n")
+                res:send("\r\n")
+              elseif req.url == "/add_job" then
+                if cron_error then
+                  res:send(nil, 400)
+                  res:send_header("Content-Type", "text/html")
+                  res:send_header("Connection", "close")
+                  res:send(cron_error .. "\r\n")
+                  res:send("\r\n")
+                  cron_error = nil
+                else
+                  res:send(nil, 303)
+                  res:send_header("Location", "/")
+                  res:send_header("Connection", "close")
+                  res:send("\r\n")
                 end
-
+              else
--- Define WiFi station event callbacks
+                res:send(nil, 303)
-wifi_connect_event = function(T)
+                res:send_header("Location", "/")
-  print("Connection to AP("..T.SSID..") established!")
+                res:send_header("Connection", "close")
-  print("Waiting for IP address...")
+                res:send("\r\n")
-  if disconnect_ct ~= nil then disconnect_ct = nil end
               end
-
+              res:finish()
-wifi_got_ip_event = function(T)
-  -- Note: Having an IP address does not mean there is internet access!
-  -- Internet connectivity can be determined with net.dns.resolve().
-  print("Wifi connection is ready! IP address is: "..T.IP)
-  print("Startup will resume momentarily, you have 3 seconds to abort.")
-  print("Waiting...")
-  tmr.create():alarm(3000, tmr.ALARM_SINGLE, startup)
-  mdns.register("smartlight", {hardware='NodeMCU'})
             end
-
-wifi_disconnect_event = function(T)
-  if T.reason == wifi.eventmon.reason.ASSOC_LEAVE then
-    --the station has disassociated from a previously connected AP
-    return
           end
-  -- total_tries: how many times the station will attempt to connect to the AP. Should consider AP reboot duration.
-  local total_tries = 75
-  print("\nWiFi connection to AP("..T.SSID..") has failed!")
 
-  --There are many possible disconnect reasons, the following iterates through
+        end)
-  --the list and returns the string corresponding to the disconnect reason.
-  for key,val in pairs(wifi.eventmon.reason) do
-    if val == T.reason then
-      print("Disconnect reason: "..val.."("..key..")")
-      break
     end
 end
 
-  if disconnect_ct == nil then
+enduser_setup.start(
-    disconnect_ct = 1
+  function()
-  else
+    if wifi.sta.getip() ~= nil then 
-    disconnect_ct = disconnect_ct + 1
+      print("Connected to WiFi as:" .. wifi.sta.getip())
-  end
+      tmr.create():alarm(3000, tmr.ALARM_SINGLE, startup)
-  if disconnect_ct < total_tries then
-    print("Retrying connection...(attempt "..(disconnect_ct+1).." of "..total_tries..")")
-  else
-    wifi.sta.disconnect()
-    print("Aborting connection to AP!")
-    disconnect_ct = nil
-  end
     end
-
+  end,
--- Register WiFi Station event callbacks
+  function(err, str)
-wifi.eventmon.register(wifi.eventmon.STA_CONNECTED, wifi_connect_event)
+    print("enduser_setup: Err #" .. err .. ": " .. str)
-wifi.eventmon.register(wifi.eventmon.STA_GOT_IP, wifi_got_ip_event)
+  end,
-wifi.eventmon.register(wifi.eventmon.STA_DISCONNECTED, wifi_disconnect_event)
+  print
-
+)
-print("Connecting to WiFi access point...")
-wifi.setmode(wifi.STATION)
-wifi.sta.config({ssid=SSID, pwd=PASSWORD})
--- wifi.sta.connect() not necessary because config() uses auto-connect=true by default

libs/fifosocktest.lua

@@ -1,145 +0,0 @@
---
--- Set verbose to 0 for quiet output (either the first assertion failure or
--- "All tests OK"), to 1 to see the events ("SEND", "SENT", "CHECK") without
--- the actual bytes, or to 2 to see the events with the bytes.
---
-local verbose = 0
-
-local vprint = (verbose > 0) and print or function() end
-
---
--- Mock up enough of the nodemcu tmr structure, but pretend that nothing
--- happens between ticks.  This won't exercise the optimistic corking logic,
--- but that's probably fine.
--- luacheck: push ignore
-tmr = {}
-tmr.ALARM_SINGLE = 0
-function tmr.create()
-  local r = {}
-  function r:alarm(_i, _t, cb) vprint("TMR") cb() end
-  return r
-end
--- luacheck: pop
-
---
--- Mock up enough of the nodemcu net.socket type; have it log all the sends
--- into this "outs" array so that we can later check against it.
---
-local outs = {}
-local fakesock = {
-  cb = nil,
-  on = function(this, _, cb) this.cb = cb end,
-  send = function(this, s) vprint("SEND", (verbose > 1) and s) table.insert(outs, s) end -- luacheck: no unused
-}
-local function sent() vprint("SENT") fakesock.cb() end
-
--- And wrap a fifosock around this fake socket
-local fsend = (require "fifosock").wrap(fakesock)
-
--- Verify that the next unconsumed output is as indicated
-local function fcheck(x)
-  vprint ("CHECK", (verbose > 1) and x)
-  assert (#outs > 0)
-  assert (x == outs[1])
-  table.remove(outs, 1)
-end
-
--- Enqueue an empty function to prevent coalescing within the fifosock
-local function nocoal() fsend(function() return nil end) end
-
--- Send and check, for when the string should be sent exactly as is
-local function fsendc(x) fsend(x) fcheck(x) end
-
--- Check that there are no more outputs
-local function fchecke() vprint("CHECKE") assert (#outs == 0) end
-
---
--- And now for the tests, which start easy and grow in complexity
---
-
-fsendc("abracadabra none")
-sent() ; fchecke()
-
-fsendc("abracadabra three")
-fsend("short")
-fsend("string")
-fsend("build")
-sent() ; fcheck("shortstringbuild")
-sent() ; fchecke()
-
--- Hit default FSMALLLIM while building up
-fsendc("abracadabra lots small")
-for i = 1, 32 do fsend("a") end -- luacheck: no unused
-nocoal()
-for i = 1, 4 do fsend("a") end -- luacheck: no unused
-sent() ; fcheck(string.rep("a", 32))
-sent() ; fcheck(string.rep("a", 4))
-sent() ; fchecke()
-
--- Hit string length while building up
-fsendc("abracadabra overlong")
-for i = 1, 10 do fsend(string.rep("a",32)) end -- luacheck: no unused
-sent() ; fcheck(string.rep("a", 320))
-sent() ; fchecke()
-
--- Hit neither before sending a big string
-fsendc("abracadabra mid long")
-for i = 1, 6 do fsend(string.rep("a",32)) end -- luacheck: no unused
-fsend(string.rep("b", 256))
-nocoal()
-for i = 1, 6 do fsend(string.rep("c",32)) end -- luacheck: no unused
-sent() ; fcheck(string.rep("a", 192) .. string.rep("b", 256))
-sent() ; fcheck(string.rep("c", 192))
-sent() ; fchecke()
-
--- send a huge string, verify that it coalesces
-fsendc(string.rep("a",256) .. string.rep("b", 256) .. string.rep("c", 260))
-sent() ; fchecke()
-
--- send a huge string, verify that it coalesces save for the short bit at the end
-fsend(string.rep("a",256) .. string.rep("b", 256) .. string.rep("c", 256) .. string.rep("d",256))
-fsend("e")
-fcheck(string.rep("a",256) .. string.rep("b", 256) .. string.rep("c", 256))
-sent() ; fcheck(string.rep("d",256) .. "e")
-sent() ; fchecke()
-
--- send enough that our 4x lookahead still leaves something in the queue
-fsend(string.rep("a",512) .. string.rep("b", 512) .. string.rep("c", 512))
-fcheck(string.rep("a",512) .. string.rep("b", 512))
-sent() ; fcheck(string.rep("c",512))
-sent() ; fchecke()
-
--- test a lazy generator
-do
-  local ix = 0
-  local function gen() vprint("GEN", ix); ix = ix + 1; return ("a" .. ix), ix < 3 and gen end
-  fsend(gen)
-  fsend("b")
-  fcheck("a1")
-  sent() ; fcheck("a2")
-  sent() ; fcheck("a3")
-  sent() ; fcheck("b")
-  sent() ; fchecke()
-end
--- test a completion-like callback that does send text
-do
-  local ix = 0
-  local function gen() vprint("GEN"); ix = 1; return "efgh", nil end
-  fsend("abcd"); fsend(gen); fsend("ijkl")
-  assert (ix == 0)
-           fcheck("abcd"); assert (ix == 0)
-  sent() ; fcheck("efgh"); assert (ix == 1); ix = 0
-  sent() ; fcheck("ijkl"); assert (ix == 0)
-  sent() ; fchecke()
-end
--- and one that doesn't
-do
-  local ix = 0
-  local function gen() vprint("GEN"); ix = 1; return nil, nil end
-  fsend("abcd"); fsend(gen); fsend("ijkl")
-  assert (ix == 0)
-           fcheck("abcd"); assert (ix == 0)
-  sent() ; fcheck("ijkl"); assert (ix == 1); ix = 0
-  sent() ; fchecke()     ; assert (ix == 0)
-end
-print("All tests OK")