BLE secure bootloader example can't output RTT log

[bijian]

I use PCA10040 V0.9.0 to run SDK15 bootloader example: F:\Nordic\nRF5_SDK_15.0.0_a53641a\examples\dfu\secure_bootloader\pca10040_ble_debug\arm5_no_packs.

1. erase full chip using nrfgo studio

2. compile this example

3. program softdevice

4. download this example

I find LED1 and LED2 is on, and BLE adv name is DfuTarg. And it is connectable. But there isn't any log in the RTT viewer! So what's the matter with this?

[Vidar Berg]

The debug example has RTT logging enabled by default so it should work. Did you remember to set the target interface to SWD in the RTT viewer configuration?

 

If that doesn't help, try to upload the .hex file below and see if you get the same result. It's merged with the softdevice so you don't need to program it separately.  

 

secure_bootloader_ble_s132_pca10040_debug.hex

 

[bijian]

It's still not worked,. And I also try different versions of  RTT viewer, but still no log. I try other examples in the SDK15, they have log. So what happened to the bootloader example?

[Vidar Berg]

Could you upload your bootloader .hex file so I can try it here? The bootloader uses the same logger module as the other SDK examples, so there shouldn't be any difference. 

[bijian]

I run the  \nRF5_SDK_15.0.0_a53641a\examples\dfu\secure_bootloader\pca10040_ble_debug\arm5_no_pack. And get this hex file,you may need to program softdevice first.

3000.nrf52832_xxaa_s132.hex

[Vidar Berg]

Here is part if the output I got after I programmed 3000.nrf52832_xxaa_s132.hex. Confirms that RTT logging is enabled at least. 

Suggest to try the following in case there is an issue with the RTT viewer:

• Open the keil project in \nRF5_SDK_15.0.0_a53641a\examples\dfu\secure_bootloader\pca10040_ble_debug\arm5_no_pack
• program Softdevice and bootlaoder
• Start a debug session in Keil
• Run JLinkRTTClient.exe and see if it displays the log messages