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+--- Thread: Lm2 and Lm3 ! port USB ? (/showthread.php?tid=413)
Lm2 and Lm3 ! port USB ? - phongvucba - 06.10.2016
Hi everybody !
I have trouble following:
Write a script to check the data via USB to the LM.
-----------
require ('serial')
if not ready then
Ready = true
port, err = serial.open ('/ dev / ttyUSB2')
log (port, err)
end
-----------
On Lm2 will be announced:
Lua serials @ / dev / ttyUSB2; baud: 115200; parity: none, data bits: 8, stop bits: 1, duplex: full, flow: none
Such is the success!
-----------
On LM3 will be announced:
* Arg: 1
* luaserial
* Arg: 2
* nil
Such is successful or unsuccessful?
Plug the device was still on the LM2 and LM3 is the same USB device
RE: Lm2 and Lm3 ! port USB ? - admin - 06.10.2016
Your LM2 has older serial library, that's why the output is different. Anyway, if port cannot be open your port variable will be nil and err will be a string cannot open port
RE: Lm2 and Lm3 ! port USB ? - phongvucba - 06.10.2016
Can you give me one script writes on the latest LM3?
Script to check if USB ports are open yet?
RE: Lm2 and Lm3 ! port USB ? - admin - 06.10.2016
Do you need to check if port is present in the system?
Code:
if io.exists('/dev/ttyUSB0') then
alert('Port OK')
else
alert('Port not found')
endRE: Lm2 and Lm3 ! port USB ? - phongvucba - 08.10.2016
good. Thank so much admin!