DAP current nrf52832

RE: DAP current nrf52832

Stian Røed Hafskjold — Wed, 09 Jan 2019 08:53:51 GMT

At least after programming the consumption stays at 3mA.

If I only connect using SWDSelect in JLinkExe the consumption is 2.7mA.

Apparently this only sends the SWD switching sequence to power up the debug IF:

SEGGER J-Link Commander V6.40 (Compiled Oct 26 2018 15:06:29)
DLL version V6.40, compiled Oct 26 2018 15:06:02

Connecting to J-Link via USB...O.K.
Firmware: J-Link OB-SAM3U128-V2-NordicSemi compiled Jul 12 2018 11:44:41
Hardware version: V1.00
S/N: 682389160
VTref=3.300V

Type "connect" to establish a target connection, '?' for help
J-Link>SWDSelect
Select SWD by sending SWD switching sequence.
Found SWD-DP with ID 0x2BA01477
J-Link>

RE: DAP current nrf52832

Jeff4BLE — Wed, 09 Jan 2019 08:36:47 GMT

That's a fairly large number. I was expecting some in the the couple hundreds of uA. I have multiple experiences of an enabled debug interface not being detected post production. This results in shorter then expected battery life. But I would think 3 mA would be easily detected. Additional thoughts?

RE: DAP current nrf52832

Stian Røed Hafskjold — Mon, 07 Jan 2019 12:21:50 GMT

I don't think this is documented anywhere. The power consumption of the debug interface is 3mA