Dear Dialog, I am using a custom DA14580 application board and have four built four samples of it. All work fine with the J-Link debugger. One board successfully runs a modified proximity reporter application very nicely thank you and is able to auto-boot from SPI flash. It gives the same output as when the application is run on the WLCSP module on the Expert Dev kit even though the 32kHz crystal oscillator is not used.The other three boards have the same behaviour in that they all stop running immediately after starting debug. The 16MHz oscillator stops when the function rwip_init(error) is called from arch_main.c. I've tried changing the configuration to use RCX20 instead of XTAL32 but that is not the source of the problem. I cannot see any difference in build level between the four boards that should impact upon the DA14580 operation. Do you have any suggestions what might be causing firmware to stop from within rwip_init() ?
Thanks in advance for any information that you can give.