[Tinyos-devel] Patches to FTSP and CC2420 for 32kHz sync and LPL functionality

[Razvan Musaloiu-E.]

Hi!

On Sat, 27 Jun 2009, Philip Levis wrote:

>
> On Jun 26, 2009, at 6:35 PM, Razvan Musaloiu-E. wrote:
>
>> I update the default-lpl-new branch to use a SystemLowPowerListeningC 
>> instead of DefaultLplSettingsC. The new interface is like this:
>> 
>> interface SystemLowPowerListening
>> {
>> 	command void setLocalSleepInterval(uint16_t interval);
>> 	command void setRxSleepInterval(uint16_t interval);
>> 	command void setDelayAfterReceive(uint16_t interval);
>>
>> 	command uint16_t getRxSleepInterval();
>> 	command uint16_t getDelayAfterReceive();
>> }
>> 
>> The setX calls are used by the user application while the getX are used by 
>> LplAMSenderP and DefaulLplP. One drawback of this is the fact that it 
>> doesn't prevent the user from calling the setX at the wrong time. :|
>
> This looks good -- I think my one comment would be to change RxSleepInterval 
> to DefaultDestinationSleepInterval. That seems clearer to me.

Good point. I'll make this change.

> I agree on the issues with the set calls. One solution here is that you have 
> an error_t return value, with can return FAIL if done at the wrong time 
> (e.g., radio is on).
>

I'm going to try to add this too by hooking up to the SplitControl of the 
ActiveMessageC and and tracking the startDone/stopDone.

--
Razvan ME