Erase Failed: Flash Download Failed - Flashing SoftDevice with Keil (CMSIS-DAP)

[ImQ009]

Hello!

I'm trying to flash my SeeedStudio Tiny BLE board (nRF51822 QFAA) with SoftDevice S110 using Keil but it doesn't look like it's going to let me. I'm just getting the following error:

Erase Failed! Error: Flash Download Failed - "Cortex-M0"

I've read that it happens when you try to flash a program over SoftDevice but I'm actually trying to flash SoftDevice itself...

It's letting me do a full chip erase but it's not helping at all, I just keep getting that error whenever I try to flash something, SoftDevice or any program, really. The IROM1 and IRAM1 settings are correct, they match the information provided in the datasheet: IROM1: 0x0 (size: 0x40000) IRAM1: 0x20000000 (size: 0x4000)

I'd appreciate any sort of advice here. Thank you

[MartinBL]

Hi.

• How exactly are you trying to flash your SoftDevice? Are you using nrfGo Studio?
• Have you chosen correct debugger and device?
• Do you provide power to your device?
• What sort of debugger do you use and how have you wired it up?

[ImQ009]

• No, I'm not using nRFGo Studio.
• Yes, I'm using the CMSIS-DAP debugger, it's the appropriate one for the board I'm using, because it has a built-in CMSIS-DAP programmer.
• Yes, it has power.
• Again, using built-in CMSIS-DAP debugger

The settings that you've shown me match mine (with the exception of the debugger itself)

[MartinBL]

Have you tried the steps in this blog post?

[ImQ009]

Yes, though in the troubleshooting section it says that I'm supposed to do something specific to that mbed kit board, something I can't really do on mine.

Anyway, I've got it now. Compiling using GCC and then merging the hex file with the SoftDevice (using SRecord) works just fine!

[Xtrem3]

Martin, you saved my life! Was searching for an answer for 2 hours. Your solution finally worked, thanks!