FW works on nRF51 DK but when I flash in my target board it doesn't.

[Sergio T]

I developed an application based on ble_app_uart and it is working on my nRF51 DK. I can see the ports driven by my application responding and Bluetooth communication is working perfectly.

I generated the HEX file as "Additional output format" in the Linker option and flashed it on my target board using JLink.

Well, the controller of my target board just doesn't start!

Does the HEX file contain the Soft Device? What am I doing wrong?

[Jørgen Holmefjord]

Hi,

The nRF51 DK comes with a QFAC chip, with 32 kB RAM, while the QFAA chip of your board have only 16 kB. You should change the linker settings to reflect this.

Do your board contain the 32.768 kHz LF crystal? If not, you should make sure that your firmware is configured to use the internal RC oscillator.

Which SDK version are you using?

Best regards,
Jørgen

[Sergio T]

Hi.

I'm not using 32.768kHz, instead I use 16MHz quartz. How can I config to use the internal oscillator or even better, the 16MHz quartz?

I am using SDK12 and S130 softdevice. My code is based on ble_app_uart example.

What changes do I need to make for the RAM size problem? Sorry, I'm new to Nordic...

I can send you the schematic if you prefer...