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Author Topic: Low power / shutdown modes  (Read 893 times)

mr_g

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Low power / shutdown modes
« on: February 21, 2012, 04:15:34 am »
Is there available low power od shutdown mode in BR355?

So It would fix its possition very fast after power up...
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GS_TECH01

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Re: Low power / shutdown modes
« Reply #1 on: February 24, 2012, 12:52:05 pm »
After checking with our engineers, the BR-355 does support the low power/shutdown, or formally known as Trickle Mode. Just a quick question, are you familiar or know how to enable the said mode? Please confirm.
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mr_g

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Re: Low power / shutdown modes
« Reply #2 on: February 27, 2012, 02:32:30 am »
No. Plesase info...  :-[
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GS_TECH01

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Re: Low power / shutdown modes
« Reply #3 on: February 28, 2012, 07:04:12 pm »
I will follow up with our engineers about this to see if they have some sort of instructions.
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GS_TECH01

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Re: Low power / shutdown modes
« Reply #4 on: February 29, 2012, 01:47:59 pm »
To enable the Trickle Mode in the device, you can possibly follow the instructions below:

1. Download the SiRFDemo program: (http://www.usglobalsat.com/store/downloads/SiRFDemo387.zip).
2. Extract the file and install the application.
3. Connect the engine module.
4. Open up the software.
5. Select the proper com port and baud rate.
6. Go to Action > Open Data Source.
7. Next, go to Action > Switch to SiRF Protocol.
8. If you see scrolling data in the Response View window, it means the board is in SiRF Mode.
9. Go to Action > Set Low Power (Trickle Power).
10. The Low Power window should come up.
11. Select TricklePower under Mode.
12. You should be able to see the other fields not grayed anymore.
13. change the other settings as you prefer.
14. Click the Send button once you're done.

Note: Be sure not to click on anything else in this software, as you can render your device unusable. Moreover, the device will return to its default settings once the internal battery drains when it is removed from power.
« Last Edit: February 29, 2012, 03:41:23 pm by USG_TECH10 »
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mr_g

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Re: Low power / shutdown modes
« Reply #5 on: March 08, 2012, 07:12:24 am »
I'm not connecting BR355 to PC, but embedded system with uC... So I cannot run sirfdemo on it...

What are the commands. What is the response, how it would effect GPS receiver?

And offcourse how to go back to normal working mode?
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GS_TECH01

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Re: Low power / shutdown modes
« Reply #6 on: March 09, 2012, 01:17:54 pm »
You can possibly read through the following documents to give you some ideas about the commands, response, etc.:

SiRF Binary Protocol: (http://gpsd.googlecode.com/files/SiRF-SiRF-v2_4.pdf)
NMEA Protocol: (http://www.usglobalsat.com/store/downloads/NMEA_commands.pdf)
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