Regarding flash download failed... (nrf51822)

RE: Regarding flash download failed... (nrf51822)

nd_asker — Wed, 04 Sep 2019 08:50:31 GMT

In short, keep the length of directory name less than 54 letters.

RE: Regarding flash download failed... (nrf51822)

nd_asker — Wed, 04 Sep 2019 08:46:41 GMT

I met similar problem today and I have solved it.
I'm using SDK "nRF5_SDK_15.2.0_9412b96" and chip nRF52840.

When I have copied project "[nRF5_SDK_15.2.0_9412b96]\examples\ble_peripheral\ble_app_uart_xxx" as "...\ble_app_uart_yyy" to get new start, I found that in project "ble_app_uart_yyy", Keil 5 cannot download SoftDevice file to the chip.
Keil 5 reports an error which is almost the same with as said by Deepak Handore.
"Error: Flash Download failed - Could not load file '..\..\..\..\..\..\components\softdevice\s140\hex\s140_nrf52_6.1.0_softdevice.hex'"
But in old project "ble_app_uart_xxx", there is no problem.
The SoftDevice file is OK. I have checked it.

I tried to reduce the length of directory name "ble_app_uart_yyy", and then the problem miraculously disappered.
Before: [nRF5_SDK_15.2.0_9412b96]\examples\ble_peripheral\ble_app_uart_yyy...yyy (very long name)
After: [nRF5_SDK_15.2.0_9412b96]\examples\ble_peripheral\ble_app_uart_yyy (shorter name)
I have check that if (length_of_dir_name > 54), Keil 5 would report this problem.
And if (length_of_dir_name <= 54), everything is fine.

Good luck.

RE: Regarding flash download failed... (nrf51822)

Ron — Tue, 25 Sep 2018 13:53:49 GMT

Hi, I would love to know how

Thanks Deepak

RE: Regarding flash download failed... (nrf51822)

Susheel Nuguru — Mon, 13 Aug 2018 12:07:08 GMT

Can you please care to share how you solved the problem Deepak, other forum members who have similar problem will be grateful to you.

RE: Regarding flash download failed... (nrf51822)

Deepak Handore — Fri, 10 Aug 2018 17:51:55 GMT

Solved the problem...

RE: Regarding flash download failed... (nrf51822)

Susheel Nuguru — Wed, 04 Jul 2018 11:37:00 GMT

'..\..\..\..\..\..\components\softdevice\s110\hex\s110_nrf51_8.0.0_softdevice.hex'

This above path is correct for the default SDK folder structure. But looks like something is changed in your project folder structure. So I cannot know where the hex file is moved in your setting.

BTW, I just tested this in SDK10 and it had no problems flashing the hex file

RE: Regarding flash download failed... (nrf51822)

Deepak Handore — Wed, 04 Jul 2018 06:20:31 GMT

I will try to provide correct path & update u but can u send snap of hex file location or just path...

RE: Regarding flash download failed... (nrf51822)

Susheel Nuguru — Tue, 03 Jul 2018 18:05:01 GMT

I haven't seen this myself, but seems like uVision is not able to find the hex file in the given path.

RE: Regarding flash download failed... (nrf51822)

Deepak Handore — Tue, 03 Jul 2018 17:20:14 GMT

actually what happened when i am uploading code then following files goes in (compound-softdevice-s110) folder:

DEP file & log.htm file..