1 files changed, 73 insertions, 0 deletions
diff --git a/mqtt-bridge/inter.lua b/mqtt-bridge/inter.lua
new file mode 100644
index 0000000..eb64a98
--- /dev/null
+++ b/mqtt-bridge/inter.lua
@@ -0,0 +1,73 @@
+function inter_parse(line)
+  print("inter_parse: line="..line)
+
+  line = string.sub(line, 1, string.find(line, "\r"))
+
+  local cmd = nil;
+  local i = string.find(line, ":")
+  if i == nil then
+    print("inter_parse: invalid line: no command, line="..line)
+    return
+  end
+  local cmd = string.sub(line, 1, i - 1)
+  print("inter_parse: cmd="..cmd)
+
+  local args = {}
+  last = i+1
+  while i ~= nil do
+    local key
+    local value
+
+    i = string.find(line, " ", last)
+
+    arg = string.sub(line, last, i)
+    print("inter_parse: arg: "..arg)
+    j = string.find(arg, "=")
+    if j == nil then
+      key = arg
+      args[key] = true
+      print("inter_parse: key="..key.."=true")
+    else
+      key = string.sub(arg, 1, j-1)
+      value = string.sub(arg, j+1)
+      print("inter_parse: key="..key..", value="..value)
+    end
+    if i == nil then
+      break
+    end
+    last = i + 1
+  end
+
+  return cmd, args
+end
+
+local cb
+-- require('inter'); inter_init();
+-- cmd:abc=123 xyz=qwe woot
+function inter_on_line(line)
+  print("line:"..line)
+
+  local cmd, args = inter_parse(line)
+  if cmd == nil then
+    return
+  end
+
+--  print("cmd="..cmd)
+--  for k, v in pairs(args) do
+--    print(k.."="..tostring(v))
+--  end
+  if cb then
+    cb(cmd, args)
+  end
+end
+
+function inter_init(callback)
+  -- uart.setup(id, baud, databits, parity, stopbits, echo)
+  -- uart.setup(0, 115200, 8, 0, 1, 0)
+  -- uart.setup(0, 9600, 8, 0, 1, 0)
+  cb = callback
+
+  tmr.alarm(0, 1000, 0, function() print("still alive!"); end)
+  uart.on("data", "\r", inter_on_line, 0)
+  print("inter ready: callback.."..tostring(cb))
+end