MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.

Added by Christopher Brunson almost 11 years ago

I am trying to load the hello world program.

So I set up the serial port on my pc with the following settings:

Baud Rate = 115200
Data = 8 bit
Parity = none
Stop = 1 bit
Flow Control = none

I also connected the provided null modem cable.

When I power the IO board the power good LED lights up and then nothing happens on the serial port.

Pressing the reset button does nothing.

I was wondering if anyone had come across this problem before and come up with a solution?

Thanks.

Replies (7)

RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port. - Added by Bob Duke almost 11 years ago

Hello Christopher,

What terminal program are you using to connect to the serial port on your PC?

-Bob

RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port. - Added by Christopher Brunson almost 11 years ago

Hi Bob,

I have been trying with both screen and putty.

Both seem to work fine when I loopback the tx and rx lines on the serial port.

Thanks,

Chris.

RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port. - Added by Jonathan Cormier almost 11 years ago

Chris,

Have you tried to add another null modem adapter into the mix or a straight-thru cable just as a sanity check.

-Jonathan

RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port. - Added by Christopher Brunson almost 11 years ago

Hi,

Swapping up the cables sees to make no difference, and if I plug in my work PC into the supplied cross over cable I get an IP.

Thanks,

Chris.

RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port. - Added by Christopher Brunson almost 11 years ago

Hi,

I finally got it working by directly connecting the serial port to the board.

Thanks for the help,

Chris.

RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port. - Added by Tim Iskander almost 11 years ago

Chris,
Glad to hear of your success... if you don't mind, can you detail your setup a bit. Are you using a USB serial adapter (if so which one) or a serial port on your PC motherboard or pci card?
It sounds like the serial port you are using has been set up as a DCE instead of the usual DTE.

cheers
/Tim

RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port. - Added by Christopher Brunson almost 11 years ago

Hi,

I am using a nondescript USB to RS232 cable, dmesg tells me its a FTDI USB-RS232 cable, with a FT232RL onboard.

Chris.

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