# Orp command send over uart on mangoh red seems not working

**URL:** <https://forum.sierrawireless.com/t/orp-command-send-over-uart-on-mangoh-red-seems-not-working/28420>\
**Category:** WP Series\
**Created:** [November 22, 2022, 5:21pm UTC](https://forum.sierrawireless.com/t/orp-command-send-over-uart-on-mangoh-red-seems-not-working/28420 "2022-11-22T17:21:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![achamouzas](https://avatars.discourse-cdn.com/v4/letter/a/d26b3c/32.png) [@achamouzas](https://forum.sierrawireless.com/u/achamouzas)\
**Post date:** [November 22, 2022, 5:21pm UTC](https://forum.sierrawireless.com/t/orp-command-send-over-uart-on-mangoh-red-seems-not-working/28420/1 "2022-11-22T17:21:30Z")

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Hello,  
I am using a mangoh red device and i am trying to send some orp commands using the test orp python script. I have already configure my device in octave on device/services and either UART1 or UART2 doesnt seems to work. On resources field cannot see the orp/assets created.  
while i am sending the command over the test python i get back only the :

> create input num lr1110  
> Sending: IN01Plr1110

I checked with oscilloscope , the Rx pin seems to receive from laptop , but there is no any activity on Tr line.

root@swi-mdm9x28-wp:~# legato version  
OTVRED3.5.2\_007010ff0f761dd40de977324b5f90cc  
root@swi-mdm9x28-wp:~# octave version  
3.5.2

any idea?  
Thanks

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<div class="post-metadata">

**Author:** ![njoyeux](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/njoyeux/32/6714_2.png) [@njoyeux](https://forum.sierrawireless.com/u/njoyeux)\
**Post date:** [November 29, 2022, 2:29pm UTC](https://forum.sierrawireless.com/t/orp-command-send-over-uart-on-mangoh-red-seems-not-working/28420/2 "2022-11-29T14:29:01Z")

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Hello @achamouzas ,

I am sorry for the inconvenience you are facing with Octave solution.  
I am able to reproduce the same issue. There is an UART initialization bug with version 3.5.2 of the Octave image for mangOH Red boards.  
As a workaround you can take the module-only WP77 image which does not have the bug:

- go to [Upgrade a Device Locally with the Latest Firmware](https://docs.octave.dev/docs/upgrade-a-device-locally-with-the-latest-firmware)
- upgrade locally your device with **WP7702 (module-only) image**.

You will loose the capability to use the mangOH sensors with this image but ORP is OK.

If you really need the mangOH Red sensors then I suggest you to downgrade your module to [red 3.3.1 version](https://downloads.sierrawireless.com/octave/red-3.3.1.wp77xx.sierra.spk).

Lastly, please use dedicated Octave forum for Octave related issues:

> **[Octave](https://forum.sierrawireless.com/c/octave/90)**
>
> Topics related to Octave edge-to-cloud data orchestration IoT platform.
> 
> OpenAPI: https://openapi.octave.dev/ - Documentation: https://docs.octave.dev/

Thanks,  
Nicolas