mcumgr uart smp speed is slow

[William.wei]

hi support team,

i was testing mcumgr ota from uart, but found that the speed is slow how can i improve this?

i have change uart baud to 460800, but did not help. for customer usage, if app_update.bin is over400Kb, this process will be over 3 minutes, it is really slow.

i was testing ncs2.4.0, but i believe ncs2.1.2 and ncs2.3.0 is the same.

Regards,

William.

[Sigurd Hellesvik]

Hi William,

Unfortunally, mcumgr is known to be quite slow.

The support is not ready yet, but nrfutil has some support for MCUboot DFU and is a lot faster.
When nrfutil has full support for MCUboot DFU, I suggest you switch to that.

For now, see  MCUBOOT slow with nRF52840 / Zephyr / USB CDC_ACM protocol for how to speed up mcumgr.

Regrards,
Sigurd Hellesvik

[William.wei]

Hi Sigurd,

may i ask if the nrf util is ready for ncs mcumgr function, i have already installed 91 command, but don't know how to use it for MCUboot DFU.

Regards,

William.

[Sigurd Hellesvik]

I will inquire about nrfutil.

In the meantime, Zephyr now list some other alternatives than mcumgr-native-cli.
See https://docs.zephyrproject.org/latest/services/device_mgmt/mcumgr.html for a list. Most of these will be faster than the old tool

[Sigurd Hellesvik]

nrfutil does not have finished support for mcumgr functionality yet no.