NMP timeout on MCUMGR

RE: NMP timeout on MCUMGR

Hung Bui — Thu, 09 Jun 2022 12:19:00 GMT

Hi Bob,

Could you try again without using overlay-shell-mgmnt.conf ?
The shell-mgmnt only needed if you plan to use shell commands at the same time with mcumgr. If not you can remove it.
I am seeing the same issue if I include overlay-shell-mgmnt.conf . It works fine if I removed the configuration.

RE: NMP timeout on MCUMGR

user111887 — Thu, 09 Jun 2022 09:34:50 GMT

Hi,
I added the overlay-serial.conf, overlay-fs.conf and overlay-shell-mgmnt.conf as Kconfig fragments. (VSCode). The generated autoconfig.h shows #define CONFIG_MCUMGR_SMP_UART 1. So I think the CONFIG_MCUMGR_SMP_UART=y was indeed set.
I used the following mcumgr strings:
mcumgr conn add acm0 type="serial" connstring="com7,baud=115200,mtu=512"
resulted in "Connection profile acm0 successfully added"
Then: mcumgr -c acm0 image list
Resulted in "Error: NMP timeout"

My final goal is to have a POC for the DFU, image update.
I flashed a smp_svr example and want to update the application with a new hello world 2 or similar.
I hope I am on the right track...

RE: NMP timeout on MCUMGR

Hung Bui — Thu, 09 Jun 2022 09:12:47 GMT

Hi Bob,

Could you let me know what was your connstring and type in the mcumgr script ?

Have you made sure that when you compilied smp_svr you did add CONFIG_MCUMGR_SMP_UART=y into the config ? It's required for SMP_SVR to support UART.