19. Serial Wire Debug Probe

In this Section describe how to configure the different DA14531/DA1453x development kits to operate as J-Link Debug Probes.

All DA1453x/DA14531 Development Kits contain a Segger J-Link device that provides Serial Wire Debug (SWD) capability. By default, this J-Link device will connect to the DA1453x devices by the Development Kit boards, however it is possible connect it to your own hardware, allowing the Development Kit board to act as a Debug Probe.

_images/dk_debug_probe.png — Figure 53 Using a DA1453x/DA14531 Development Kits as a J-Link Debug Probe

Hint

Using a Development Kit as a J-Link Debug Probe allows you to debug code running on custom hardware and to program the Flash and/or OTP.

19.1. DA14531 USB Development Kit

Disconnect the DA14531 on the USB Development from the Segger J-Link device by removing resistors R3 and R11. The locations of these resistors is shown below. Note that the complete design files (schematics, Gerbers and BOM) for the DA14531 USB Development Kit board can be found in DA14531 development kit USB.

_images/531_usb_dk_probe_1.PNG — Figure 54 Disconnecting DA14531 from J-Link on USB Development Kit

Ensure the switches on the Development Kit board are configured as illustrated below, then connect the custom hardware to the Development Kit board using the jumper wires shown.

_images/531_usb_dk_probe_2.PNG — Figure 55 Connecting J-Link on USB Development Kit to Custom Board

You can now download and debug code on your custom DA1453x based board using the Keil or Eclipse tools.

19.2. DA14531 DEVKT-P

Remove the daugther card from motherboard and then connect the custom hardware to the Development Kit board using the jumper wires show below. Note that the complete design files (schematics, Gerbers and BOM) for the DA14531 PRO Development Kit board can be found in DA14531 development kit Pro.

_images/531_pro_dk_probe_1.PNG — Figure 56 Connecting J-Link on DEVKT-P to Custom Board

19.3. DA1453x DEVKT-P

Remove the daugther card from motherboard and then connect the custom hardware to the Development Kit board using the jumper wires show below.

_images/53x_pro_dk_probe_1.svg — Figure 57 Connecting J-Link on DEVKT-P to Custom Board

You can now download and debug code on your custom Development boards using the Keil or Eclipse tools.

Warning

If using long jumper wires you may have to reduce the SWD clock speed due to the increased capacitance these add to the interface.