Hello.I 've got such problem with flashing some of the ESB protocol examples of NRF5 SDK.I use Adafruit Feather NRF52832 board with ST-LINK V2 debugger.https://www.adafruit.com/product/3406I work in Keil 5 IDE.When Ii try to load some of BLE examples (Periph Blinky, etc.), everything is ok. First I flash the Sortdevice and than directly an example.App works no problem.But when I try to flash ESB examples (like ESB low power prx) I've got such error.
I use default flash algorithm in debug settings.But once when I change smth I got it flashing, but than I again try to flash SoftDevice and BLE and after that again can't flash ESB...Any ideas what am I doing wrong?All my best.Ivan.
Did you remember to erase the chip before you programmed the example?
Use this nrfjprog command before you try to program it:
So flash erase via Keil doesn't seems to be correct?
again, have you tried with the ST-Link Utility - to rule Keil out of the issue?
st-link utility gives an error to flash.But directly via Keil I can flash Soft Device and BLE examples no problem.Once I was lucky to flash ESB example, maybe that was correct erase of the chip.
Again, using (ab)using unsupported tools outside their designed scope is just complicating things.
So, finally I got it work properly with ST-LINK without any problem.
I add a 'softdevice erase flash' algo in a separate target with 'erase full chip' option, no program. And left only 'nrf52_xx' flash algo in default target with program option and no erase.
First, you erase full chip with first target, than you program it with second. Thats all.
Thanks for sharing.
Please verify that answer - so that people know it solves the issue