2 replies to this topic

[apokryphus]

Hello everybody,

 

i would like to know, if it is possible - just like on the stm32f4 dicovery - to use the internal RTC with the Internal RC-Oszillator?

 

In would like to do this in c/c++ because it besomes very easy now to write and flash c-code to the netduino since visualgdb is supporting the STM32F4 familiy.... For flashing i use the stlink V2 ....

 

 

Thank you very much.

[nakchak]

AFAIK the RTC is already being used by the NETMF runtime, so you cant access it for managed projects, that said there is nothing stopping you writing your own firmware and not using NETMF on the netduino hardware.

 

Nak.

[Valkyrie-MT]

Hello everybody,

 

i would like to know, if it is possible - just like on the stm32f4 dicovery - to use the internal RTC with the Internal RC-Oszillator?

 

In would like to do this in c/c++ because it besomes very easy now to write and flash c-code to the netduino since visualgdb is supporting the STM32F4 familiy.... For flashing i use the stlink V2 ....

 

 

Thank you very much.

 

The RTC requires an external 32.768 KHz oscillator with some capacitors and a battery.  It would also require changes to the Netduino firmware to set and read the time value.  But this is only needed to keep time while powered off.  If you want to use the internal oscillator for the RTC, I believe you can specify certain register values for that, but it would not be very accurate and it won't survive a power cycle.