switch require() to dofile() to ease memory cleanup

lua_examples/irsend.lua

@@ -5,7 +5,7 @@
 -- Vladimir Dronnikov <dronnikov@gmail.com>
 --
 -- Example:
--- require("irsend").nec(4, 0x00ff00ff)
+-- dofile("irsend.lua").nec(4, 0x00ff00ff)
 ------------------------------------------------------------------------------
 local M
 do

lua_examples/yet-another-bmp085.lua

@@ -6,7 +6,7 @@
 -- Heavily based on work of Christee <Christee@nodemcu.com>
 --
 -- Example:
--- require("bmp085").read(sda, scl)
+-- dofile("bmp085.lua").read(sda, scl)
 ------------------------------------------------------------------------------
 local M
 do
@@ -59,20 +59,13 @@ do
       MD  = r16(0xBE)
     end
     -- get raw P
-    local p
-    -- NB: optimize for oss = 0
     if not oss then oss = 0 end
-    if oss == 0 then
+    if oss <= 0 then oss = 0 end
-      oss = 0
+    if oss > 3 then oss = 3 end
-      w8(0xF4, 0x34)
-      tmr.delay(5000)
-      p = r8(0xF6) * 256 + r8(0xF7)
-    else
     w8(0xF4, 0x34 + 64 * oss)
-      tmr.delay(30000)
+    tmr.delay((4 + 3 ^ oss) * 1000)
-      p = r8(0xF6) * 65536 + r8(0xF7) * 256 + r8(0xF8)
+    local p = r8(0xF6) * 65536 + r8(0xF7) * 256 + r8(0xF8)
     p = p / 2 ^ (8 - oss)
-    end
     -- get T
     w8(0xF4, 0x2E)
     tmr.delay(5000)

lua_examples/yet-another-dht22.lua

@@ -5,8 +5,8 @@
 -- Vladimir Dronnikov <dronnikov@gmail.com>
 --
 -- Example:
--- print("DHT11", require("dht22").read(4))
+-- print("DHT11", dofile("dht22.lua").read(4))
--- print("DHT22", require("dht22").read(4, true))
+-- print("DHT22", dofile("dht22.lua").read(4, true))
 -- NB: the very first read sometimes fails
 ------------------------------------------------------------------------------
 local M

lua_examples/yet-another-ds18b20.lua

@@ -5,7 +5,7 @@
 -- Vladimir Dronnikov <dronnikov@gmail.com>
 --
 -- Example:
--- require("ds18b20").read(4, function(r) for k, v in pairs(r) do print(k, v) end end)
+-- dofile("ds18b20.lua").read(4, function(r) for k, v in pairs(r) do print(k, v) end end)
 ------------------------------------------------------------------------------
 local M
 do