BLE activity on LDO based schematic?

RE: BLE activity on LDO based schematic?

earaid — Tue, 11 Nov 2014 22:52:31 GMT

My issue had to do with 32kHz clock. The eval board uses an external crystal. I had to configure the app to use the internal RC.

RE: BLE activity on LDO based schematic?

earaid — Tue, 11 Nov 2014 22:50:44 GMT

My issue had to do with 32kHz clock. The eval board uses an external crystal. I had to configure the app to use the internal RC.

RE: BLE activity on LDO based schematic?

earaid — Tue, 11 Nov 2014 21:21:49 GMT

Thank you John, I did see this thread... I'm just stuck on how I can enable/disable the DCDC in firmware and softdevice. I cannot seem to find an API that does this.

RE: BLE activity on LDO based schematic?

John — Tue, 11 Nov 2014 20:56:14 GMT

I've not had to deal with DCDC. I did see this thread that might have some useful information for you, I learned a bit reading it just now:

LDO vs DCDC

RE: BLE activity on LDO based schematic?

Nguyen Hoan Hoang — Tue, 11 Nov 2014 18:51:08 GMT

The Blinky works means your power is ok. More likely your antenna does not work.

RE: BLE activity on LDO based schematic?

earaid — Tue, 11 Nov 2014 18:25:26 GMT

Yes I did load softdevice. The project worked fine on the evaluation board. We are thinking it has to do something with LDO vs DCDC. Our custom board is supposed to run at 1.8V. Is there a FW configuration I need to change to switch from DCDC to LDO?

RE: BLE activity on LDO based schematic?

John — Tue, 11 Nov 2014 18:21:59 GMT

Did you program the radio with the soft device stack before loading the HRM project? If you didn't the project won't work.