# Problem with NET+OS7.1 -\> second com-port on the dev-board

**URL:** <https://forums.digi.com/t/problem-with-net-os7-1-second-com-port-on-the-dev-board/3848>\
**Category:** NET+OS\
**Tags:** serial\
**Created:** [March 15, 2007, 9:58am UTC](https://forums.digi.com/t/problem-with-net-os7-1-second-com-port-on-the-dev-board/3848 "2007-03-15T09:58:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mentzer](https://avatars.discourse-cdn.com/v4/letter/m/94ad74/32.png) [@mentzer](https://forums.digi.com/u/mentzer)\
**Post date:** [March 15, 2007, 9:58am UTC](https://forums.digi.com/t/problem-with-net-os7-1-second-com-port-on-the-dev-board/3848/1 "2007-03-15T09:58:33Z")

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Hello, for my application I need the second serial interface on the DEV Borad. With NET+OS 6,3 it functioned, I set in the appconf.h file the variable from “com/0” to “com/1”. With the new software NET+OS 7,1 it does not work, if I set the variable to “com/1”. The Connectme module does not work thereby. How and where do I have to setup the interface?

Thank for your help !

Marcus

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<div class="post-metadata">

**Author:** ![mentzer](https://avatars.discourse-cdn.com/v4/letter/m/94ad74/32.png) [@mentzer](https://forums.digi.com/u/mentzer)\
**Post date:** [March 15, 2007, 10:55am UTC](https://forums.digi.com/t/problem-with-net-os7-1-second-com-port-on-the-dev-board/3848/2 "2007-03-15T10:55:34Z")

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I found the solution, in the file bsp.h the variable BSP\_SERIAL\_PORT\_2 was set to BSP\_SERIAL\_NO\_DRIVER. It must BSP\_SERIAL\_UART\_DRIVER.