RE: Chinese BLE

Miguel — Thu, 03 Jun 2021 13:25:42 GMT

It´s alive! It´s alive!

Thank you so much!!!!!!!!!!!!!!!!!!!!!!!!!!!!

RE: Chinese BLE

Jay Tyzzer — Wed, 02 Jun 2021 20:53:17 GMT

Hi Miguel,

The reason the modules are no longer working is that the softdevice requires a 32Khz clock to operate. This can be a crystal, a external clock or by using the provided 32KHz internal RC oscillator. If you are using the SDK5 version then you can find the configuration for using the internal 32KHz RC clock in the sdk_config.h file. For example in the heart rate example in SDK5 version 17.0.2 you can find where to change the values. This will enable the Softdevice to use the internal 32KHz oscillator. If you are using a lower numbered version of the SDK then the line numbers maybe different.

Change these to the number in blue shown and recompile your code and then reprogram your boards. They should work now.

I aslo see that not only is the crystal gone but so are the load caps. That ok as if there is no crystal then they are not needed.. However I see two other components populated on the left module that are not populated on the right. As I don't have the Schematics for them it is hard to tell what they are / were being used for.

I hope this was of value.

Best regards,

Jay Tyzzer | Sr. Field Application Engineer, Hardware

M +1 626 710 7494 | Southern California, USA

nordicsemi.com | devzone.nordicsemi.com