Recompilation of ble_app_hrs in nRF5_SDK_17.1.0 package does not work

[jinvers]

Hello,

I am using the Segger Embeddd Studio from the nRF Connect Desktop and the nRF52840-DK board.

I am working over the project into the "ses" directory for SoftDevice S140 version (..\nRF5_SDK_17.1.0_ddde560\examples\ble_peripheral\ble_app_hrs\pca10065\s140\ses\ble_app_hrs_pca10056_s140.emProject). Just as it is, I rebuid the project and it is done without any error or warning. But when I download it to the nRF52840-DK I cannot see the LED 1 flashing and I cannot bond the board.

If I reprogram the nRF52840-DK with the original hex file (ble_app_hrs_pca10056_s140.hex), then the board resets with the LED 1 flashing and prepared from bonding.

What should I consider to be able to get a compilation output to work on the nRF52840-DK board?

Thank you in advance.

Regards.

[Hung Bui]

Hi Joel, 

Could you let me know how you downloaded the binary to the chip ? 
Note that you would need to flash the softdevice in addition to the application image. This is done automatically if you flash using Segger Embeded Studio. But if flash the application manually you need to flash the correspondent softdevice. 

The precompiled ble_app_hrs_pca10056_s140.hex has the softdevice included so you don't need to flash the softdevice. 

Please try to test with other applications as well. 

[jinvers]

Hi,

I downloaded into the chip the .hex file generated by the Segger Studio into the Output file of the project. In 2 ways: one just copying the hex file into the J-Link directory; a second one using the Segger IDE.

Please, could you explain me the right sequence to follow or where may I find this information?

Best Regards,

Joel

[Hung Bui]

Hi Joel, 
You can just build and then click Target -> Download . Then it would flash both the softdevice and the application. 

Please follow the getting started guide here: https://infocenter.nordicsemi.com/topic/ug_gsg_ses/UG/gsg/intro.html?cp=1_1_2

We have a video guide here: www.youtube.com/watch

[jinvers]

Thank you. I will try.

[jinvers]

Hi,

I have rebuild the ble_app_hrs application and then downloaded using the Target->Download menu. After doing a reset of the nRF52840-DK, the LED1 have began to blink waiting for bonding. So, this is OK.

However, I have not been able to bond the board to the nRFConnect Android application. I have had to erase all the device, and download again by the Target-> Download option. After doing a reset, then it had bonded and connected. Should this always be the common procedure?