Re: [Tinyos-help] any command for resetting TMOTE SKY
I think you want to implement the WDT watchdog timer to reset the mote automatically after problems. See message number 10518. Regards Simon Davis ___ Tinyos-help mailing list Tinyos-help@Millennium.Berkeley.EDU https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] repost: tmote sky modules stop responding when using Delta app.
Hello,
On occasion(after a few days) a random mote will stop sending data and the red
led will
stay on until the reset button is pressed. (motes that fail do not recover).
Yes, it's annoying isn't it! I looked into this problem and couldn't decide
whether the problem was in Delta
or in the rest of the networking code.
On a side note, can the watchdog be implemented in low-power
mode? And would this be a possible solution of if moving to tinyos 2.0 would
help?
Yes, implement the WDT watchdog timer. This is what I did in Delta:
void touch_watchdog(){
WDTCTL = WDT_ARST_1000;
}
Have a timer touch_watchdog() every 500ms. Since I have Delta sending messages
every 10 minutes (DELTA_TIME = 614400), I use:
uint32_t count = 0;
//DELTA_TIME plus 30 secs
uint32_t WDT_TIME = (int)(((DELTA_TIME/1000)*2)+60);
event result_t TimerWatchdog.fired() {
if(count WDT_TIME){
touch_watchdog();
count = count + 1;
}
return SUCCESS;
}
event result_t SendDeltaMsg.sendDone(TOS_MsgPtr _msg, result_t _success) {
call Leds.redOff();
count = 0;
return SUCCESS;
}
This ensures that if a message fails to send after 10 mins and 30 secs, the
mote will reboot.
I haven't had any lock-ups since.
Regards
Simon Davis
=
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[Tinyos-help] Sensirion SHTxx batch differences?
Hello, I've bought a number of Sensirion SHT11 and 15s as seperate chips to use with Tmote Sky's. I'm soldering them onto ribbon cable and mounting them within modified cable glands as weather-proof housings. I want to ensure that my process isn't affecting the calibration of the sensors. What I'm wondering is whether there's a possibility that Sensirion's humidity calibration process is producing batches of sensors which agree in calibration with each other but not with other batches. For instance I have: 11 SHT15s (the number on them is 436 - week 43 2006) all reading 49-50%. 3 SHT11s (236) reading 58-59%. 2 SHT11s (066) reading 53-54%. I realise there are different accuracies between models but I think the three batches appear to have differing calibrations so that each batch is in agreement within itself but not the other two? The temperature readings on all are within accuracy and are evenly distributed. All have been hand soldered, I don't think this has affected them. Does anyone else notice anything like this? Thanks Simon - ___ Tinyos-help mailing list Tinyos-help@Millennium.Berkeley.EDU https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] multihop and low power modes
Hello, Why do you think there will be a problem? I use Delta (which uses multihop) on Moteiv Tmotes with a 1% low power duty cycle and have no problems. Simon RE: Hi,Maybe someone that knows the inner working of tinyos (or at least more than me) can answer this: Is it safe to assume I'll have a problem using multihop with low power modes?thanks in advance, Bruce ___ Tinyos-help mailing list Tinyos-help@Millennium.Berkeley.EDU https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
[Tinyos-help] TMote / Telos hardware design question
Hello, If a TMote / Telos is plugged into a USB port, 3V appears on U4 - the battery holder connection. If batteries (particularly disposables) are installed, is this going to cause a problem? If the batteries are partially exhausted then there's a danger of a reverse current presumably? Thanks Simon -- Search for products and services at: http://search.mail.com ___ Tinyos-help mailing list Tinyos-help@Millennium.Berkeley.EDU https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] Delta and retransmissions question
Hi, Thanks, it's just that I've never seen a figure over 127 yet, perhaps I should look at my database harder. I suppose the way to keep track of retransmissions is to subtract the current from the previous when every DeltaMsg arrives. Simon -- ___ Play 100s of games for FREE! http://games.mail.com ___ Tinyos-help mailing list Tinyos-help@Millennium.Berkeley.EDU https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] GIO1/ADC2 on Tmote
Well, I guessed it was TOSH_MAKE_ADC2_INPUT(); and it works fine now. -- ___ Play 100s of games for FREE! http://games.mail.com/ ___ Tinyos-help mailing list Tinyos-help@Millennium.Berkeley.EDU https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] GIO1/ADC2 on Tmote
Hi, Thanks for the response. The sensor I'm using requires about 2-3mA for 10ms, so I was hoping to avoid using an FET even though this isn't the sensible way. I like the idea of using GIO1 as a sink. I still have to set ADC2 as an input though? What would the command be? Thanks Simon -- ___ Play 100s of games for FREE! http://games.mail.com/ ___ Tinyos-help mailing list Tinyos-help@Millennium.Berkeley.EDU https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
[Tinyos-help] GIO1/ADC2 on Tmote
Hello, I'm trying to use GIO1 as a power source for a sensor so I can turn it on and off to save power. If I put a voltmeter on the pad of R16 I get the battery voltage of about 3V appearing as it turns on. If I solder a 0ohm bridge on R16 to feed it to pin 7 of the 10 pin header (which is also used by ADC2), the voltage drops to about 1.3V and it draws over 30mA - this is without any load on pin 7. What am I doing wrong!? It's presumably something programmatic. I'm using TOSH_MAKE_GIO1_OUTPUT() and then turning it on and off with TOSH_SET_GIO1_PIN() and TOSH_CLR_GIO1_PIN(). Should I do something with ADC2 and why is the voltage dropping and 30mA being drawn? Many thanks Simon Davis -- ___ Play 100s of games for FREE! http://games.mail.com/ ___ Tinyos-help mailing list Tinyos-help@Millennium.Berkeley.EDU https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Re: [Tinyos-help] calibrating TMote Sky sensors???
Hello, Are the batteries on both motes supplying at least 2.4V? If it falls below, the readings will be different from what they should be. The SHT11's otherwise are calibrated by Sensirion at the factory, that's why they cost what they do! Simon Davis On Tuesday 29 August 2006 09:55 am, Luis E. Palafox-Maestre wrote: Hi, Is there a way of calibrating the onboard sensors on the TMote? I'm asking this because I keep getting different readings for motes that are next to each other, for instance I consistently get temperature readings that are up two Celsius degrees apart. -- ___ Play 100s of games for FREE! http://games.mail.com/ ___ Tinyos-help mailing list Tinyos-help@Millennium.Berkeley.EDU https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
[Tinyos-help] Tmote, Delta and lowpower
Hello, I'm still trying to work out what's going on with the Delta application compiled with lowpower. In the lowpower.extra file there's a setting : LOWPOWER ?= 5 Changing the number doesn't seem to make any difference to the application when it's compiled. The motes run for 88 seconds (sending data to Trawler) and remain off for 5 minutes 34 seconds. Any explanation or comments on what's going on would be appreciated. Thanks Simon -- ___ Play 100s of games for FREE! http://games.mail.com/ ___ Tinyos-help mailing list Tinyos-help@Millennium.Berkeley.EDU https://mail.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
