CC2640R2F: Sensor controller UART access

Hi Holger.

The Sensor Controller is able to emulate a full-duplex UART interface. Look at the UART Emulator example in Sensor Sontroller Studio for a working example. 

I will take some measurements to find the current consumption.

Vegard

Vegard,
when do you think you can to the measurements?

Regards, Holger

Hi Holger,

Sorry for the delay. 

The current draw when the device is waiting for a UART transmission is 655.7 uA. When echoing a received package, the current draw looks like this: 

Regards, 
Vegard

Hello Vagard,
is it possible to lower the UART receive consumtion with the Cortex-M? Is it possible drive the Cortex-M in standby mode and UART receive mode? If yes, what would be the RX and TX consumption?
I read in the d/s that the UART peripheral is only active in active or idle mode on the CC2640. Is this the same for the CC2642R? I couldn't read a limitation. Would it be possible to run the UART in standby mode? If yes than in receive mode the power consumption would be 170uA.

Is it possible to wake up the Cortex-M on UART receive (may with an dummy byte)?

Regards, Holger

Hello Vegard,

please comment.

Regards, Holger