I AM TRYING TO BUILD PROGRAM USING MCUMGR

[Tharak]

Dear Mate,

I am trying to build and flash a program by using (+) Add DFU support to your application - Software - nRF Connect SDK guides - Nordic DevZone (nordicsemi.com) this link . i build the program 2 times succesfully after mcumgr --conntype serial --connstring "/dev/ttyACM0,baud=115200" echo hello this cmnd in my command promt i got NMP Timeout below i attached image also and i avoid that error and i tring to update application by using mcumgr --conntype serial --connstring "/dev/ttyACM0,baud=115200" image upload -e app_update.bin this cmnd i got nothing and it stuck at 0.0 only its not going and am struck here i need your suggestions and i am attaching both error images

[Tharak]

And sorry to inform i am using bl653_dvk board and nrf connect sdk 2.0.2 and vs code

[Tharak]

Hi Hung,

 Sorry for inconvenient 

1. I build smp_svr and flashed successfully

2. Whenever i tried to use mcumgr in command prompt

3.I got NMP timeout and i refer this page (+) NMP timeout on MCUMGR - Nordic Q&A - Nordic DevZone - Nordic DevZone (nordicsemi.com) but didnt work for me 

4. I hope u have answer with you please help me out and i will attach images of my output

5. i am using bl653_dvk board and nrf connect sdk 2.0.2 and vs code

[Hung Bui]

Please state what exactly you did with smp_svr. If you are planning to do DFU update with UART, you should add CONFIG_MCUMGR_SMP_UART=y into the prj.conf just like what showed in the overlay-serial.conf. 

Please made sure  bl653_dvk can communicate with UART with PC. Have you tried to test with the uart example ? 

[Tharak]

Dear Mate,

Thank you for rising question on me

 I didnt tried bl653_dvk can communicate with uart with pc

 please provide same hello world uart example i will try and let u know

[Hung Bui]

Have you tried the helloworld example located at \zephyr\samples\hello_world ? 
Make sure you select the board bl653_dvk when you add the build configuration. 

After that you should be able to check if it can print "Hello World" on UART. 

I would suggest to test with the blinky (\zephyr\samples\basic\blinky) as well. You should see the LED blink after that.