NRF52832 Booloader Problem

[cool__looc]

Hi All,

I'm using NRF52832 for our product. I test bootloader functionalities with development kit. The software system is also tested separately by directly programming to the device.

But the device will never connect after I flash the bootloader "examples/dfu/bootloader_secure_ble" from the sdk13. Even can not recover with "nrfjprog -f nrf52 --recover", it always shows the following message:

****** Error: Could not find core in Coresight setup
Found SW-DP with ID 0x2BA01477
Found SW-DP with ID 0x2BA01477
Could not power-up debug power domain.
Scanning AP map to find all available APs
AP[0]: Stopped AP scan as end of AP map has been reached
Iterating through AP map to find AHB-AP to use
Found SW-DP with ID 0x2BA01477
Found SW-DP with ID 0x2BA01477
Could not power-up debug power domain.
Scanning AP map to find all available APs
AP[0]: Stopped AP scan as end of AP map has been reached
Iterating through AP map to find AHB-AP to use
Cannot connect to target

The following is the schematics:

Is the bootloader brick the chip? What could be the problem?

To be short:

1. erase/flash softdevice and any program is ok;

2. whenever flash the bootloader then the device can no longer detect by jlink;

Thanks,

[Simonr]

Hi

It seems like the BUTTON_PULL call isn't defined in SDK 13. Please try defining it as NRF_GPIO_PIN_PULLUP and see if that helps. It seems like a bug in that particular SDK version as it is fixed in newer versions.

Best regards,

Simon