nrf52840 dongle debug with iar i-jet, download warning

RE: nrf52840 dongle debug with iar i-jet, download warning

Martin Lesund — Wed, 06 Feb 2019 09:39:12 GMT

Hi Maria,

When you use an external debugger and as long as you confirm that you set REG0 correctly, then there is no difference between programming whichever nRF52840.

Fri Feb 01, 2019 11:56:52: Download error at 0x00026000: downloading into non-writable memory.

You need to tell the debugger what flash region that you are going to write to, so it may not have been set correctly (?)

RE: nrf52840 dongle debug with iar i-jet, download warning

mck — Tue, 05 Feb 2019 15:16:26 GMT

Hi Martin,

Yes I did read both the nRF52840 Dongle Programming Tutorial and the nRF52840 dongle User's guide.

As per the user guide for an external source, I have cut the SB2 and soldered the SB1. The I-jet from iar provides the power. I measured the VDD out on the dongle and it has 4.5V so it does seem to get its power from the i-jet via the P1 connector where I have solder the SWD lines plus power and gnd.

As per the programming tutorial I have made sure that the preprocessor is set to PCA10059. But in truth the example project I chose from Nordic (ble_app_blinky) already had a folder set up for this PCA10059 board. Although my exact case is not covered in the tutorial (external debugger, external power, and IAR workbench), these are the things I understand to be needed to be able to now program via the SWD of the I-jet using IAR workbench.

Any ideas? Thanks, Maria

RE: nrf52840 dongle debug with iar i-jet, download warning

Martin Lesund — Tue, 05 Feb 2019 12:20:36 GMT

Hi Maria,

With regards to programming with the nRF52840 Dongle, there is some other steps to consider than using the regular nRF52840 DK.

This is well documented in the "nRF52840 Dongle Programming Tutorial".

Please read through it and if you have any more questions, then I am happy to help out.

//Martin L.