Ble nano Arm gcc hex format

[Panos]

I am using em::blocks and arm gcc with ble nano from readbear labs. I built the template example but it is not working. The output hex is the same as if i had built it with eclipse and used mergehex except for the fact that it uses Extended Segment Address (i16HEX format). When I edit the hex output using Extended Linear Address (i32HEX format) it is working fine.

Is there any option for the compiler and objcopy to output i32hex format? If not is there any option to tweak the mk20 donggle to work with the i16hex?

PS: I figured out that the format change when I use eclipse and arm gcc is being implemented in the mergehex.exe

Thanks in advance

[Stian Røed Hafskjold]

Hi,

Seems like you got it sorted out in these two threads? :)
www.avrfreaks.net/.../arm-gcc-hex-format-objcopy
answers.launchpad.net/.../294402

But isn't it weird that the MK20 dongle does not support i16hex? Have you asked in the RedBearLab forum?

[Panos]

Ι would not say it is sorted out yet but i have made some steps forward. Yes it is really weird indeed. I have not asked at redbear labs yet but I am going to. Probably it can be fixed with a couple of tweaks in the bootlader. Unfortunately I could not find the source anywhere. It's funny how I got stuck in a three party problem. Arm gcc could have an extra argument for the specific format like arm compilers, readbearlabs could have made a more flexible bootloader so it can use i16hex format and funniest of all, mergehex solves all this without even getting you suspicious.

[Stian Røed Hafskjold]

Alright! Unfortunately, I don't have an MK20 dongle here, so I'm unable to do any testing. I'll let you know if I can find one later.