Lua and Serial Port

[Helen Fornazier <helen@...>]

Hello!

I am new in Lua and I just start developing for OpenWRT in a Dragino platform.

I want to develop an application that reads data from Uart and print it in a Luci based web page.

But I am having a problem that I described here : http://stackoverflow.com/questions/15701694/lua-io-read-sends-me-an-echo-back-when-i-read-from-serial-port-why

When I execute the code :

print("Dragino Uart Test started\n")
while 1 do
    serialin=io.open("/dev/ttyS0","r")
    print(serialin:read())    --print the data
    serialin:close()
end

I read the serial port but I receive an echo too and the read() waits until a new line character to return.

There is any other way to read from a serial port ?

Thank you for your help, I appreciate it.

--
Helen Fornazier
http://www.wizzilab.com/