# Node-red-serialport Serial-in Debug No Messages

**URL:** <https://discourse.nodered.org/t/node-red-serialport-serial-in-debug-no-messages/72489>\
**Category:** General\
**Created:** [20 December 2022 19:33 UTC](https://discourse.nodered.org/t/node-red-serialport-serial-in-debug-no-messages/72489 "2022-12-20T19:33:10Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![JS2401](https://avatars.discourse-cdn.com/v4/letter/j/8baadc/32.png) [@JS2401](https://discourse.nodered.org/u/JS2401)\
**Post date:** [20 December 2022 19:33 UTC](https://discourse.nodered.org/t/node-red-serialport-serial-in-debug-no-messages/72489/1 "2022-12-20T19:33:10Z")

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I cannot get the Debug node to display received RS232 data on the debug window.  
Data is being received because I see it come up on a terminal with the comand "dd if=/dev/ttyUSB0"

Any thoughts?

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/c/6/c612efcca946b17379bd1cd2b6778081c552d5a5.png)

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**Author:** ![JS2401](https://avatars.discourse-cdn.com/v4/letter/j/8baadc/32.png) [@JS2401](https://discourse.nodered.org/u/JS2401)\
**Post date:** [20 December 2022 20:20 UTC](https://discourse.nodered.org/t/node-red-serialport-serial-in-debug-no-messages/72489/2 "2022-12-20T20:20:33Z")

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Started working. Will update once I find the reason

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**Author:** ![JS2401](https://avatars.discourse-cdn.com/v4/letter/j/8baadc/32.png) [@JS2401](https://discourse.nodered.org/u/JS2401)\
**Post date:** [20 December 2022 20:24 UTC](https://discourse.nodered.org/t/node-red-serialport-serial-in-debug-no-messages/72489/3 "2022-12-20T20:24:45Z")

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Needed a "Line Feed" at the end of a string for Node-red to pick it up.  
If anyone understands, can you elaborate?  
Thanks

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**Author:** ![dceejay](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/dceejay/32/38_2.png) [@dceejay](https://discourse.nodered.org/u/dceejay)\
**Post date:** [20 December 2022 20:28 UTC](https://discourse.nodered.org/t/node-red-serialport-serial-in-debug-no-messages/72489/4 "2022-12-20T20:28:37Z")

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ow have you configured the serial port ? default is to wait for a \n character - so unless you change that....

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**Author:** ![JS2401](https://avatars.discourse-cdn.com/v4/letter/j/8baadc/32.png) [@JS2401](https://discourse.nodered.org/u/JS2401)\
**Post date:** [20 December 2022 20:35 UTC](https://discourse.nodered.org/t/node-red-serialport-serial-in-debug-no-messages/72489/5 "2022-12-20T20:35:49Z")

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I understant now. Thank you dceejav

 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/3X/1/8/1809fca4479fcc5389040dc70e1a2097ac5a8467.png)

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [20 December 2022 21:14 UTC](https://discourse.nodered.org/t/node-red-serialport-serial-in-debug-no-messages/72489/6 "2022-12-20T21:14:50Z")

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If you don't want to split on a particular character there are other options, click on the 'on the character' dropdown to see them. Look in the help text for the node for descriptions of the other options.

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**Author:** ![JS2401](https://avatars.discourse-cdn.com/v4/letter/j/8baadc/32.png) [@JS2401](https://discourse.nodered.org/u/JS2401)\
**Post date:** [21 December 2022 02:58 UTC](https://discourse.nodered.org/t/node-red-serialport-serial-in-debug-no-messages/72489/7 "2022-12-21T02:58:16Z")

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Thanks Colin for the tip. My earlier difficulty was due to the serialport node by default requiring something other than the data I was sending for it to be received. Now that I realize that, I'm good to go.

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [19 February 2023 02:58 UTC](https://discourse.nodered.org/t/node-red-serialport-serial-in-debug-no-messages/72489/8 "2023-02-19T02:58:40Z")

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