Brick

Questions and discussion about The WiPy 1.0 board and CC3200 boards.
Target audience: Users with a WiPy 1.0 or CC3200 board.
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slothy
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Brick

Post by slothy » Sun Jan 31, 2016 8:04 pm

Hi all!

A stupid mistake on the boot.py forced me to do a "safe" boot. Connected the 3.3v to the GP28, did a reset and it is not starting anymore.

:(

Please, does someone have any trick or advice to try on the board ?

Thanks

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danicampora
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Re: Brick

Post by danicampora » Mon Feb 01, 2016 9:03 am

Hi,

Are you sure you didn't connect VIN instead of 3V3 by mistake? What do you mean it's not starting anymore? In safe boot or in normal mode?
Does the LED flash?

Cheers,
Daniel

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slothy
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Re: Brick

Post by slothy » Mon Feb 01, 2016 10:31 am

Thanks, danicampora

No, sure 3v3 and GP28.

The hearthbeat does not blink, but with a multimeter I got some some voltage on random pins.

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danicampora
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Re: Brick

Post by danicampora » Mon Feb 01, 2016 10:45 am

Can you disconnect everything from the board, and just power it with GP28 connected to 3V3? Do you see the blinking pattern described by the docs in the boot modes section?

Cheers,
Daniel

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slothy
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Re: Brick

Post by slothy » Mon Feb 01, 2016 11:18 am

Yeah, already tested, with no success :P

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slothy
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Re: Brick

Post by slothy » Mon Feb 01, 2016 12:19 pm

Seems bad doctor....

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slothy
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Re: Brick

Post by slothy » Mon Feb 01, 2016 8:42 pm

Hi,

May be, I've reproduced the cause...

On the process of wiring the 3V3 with the GP28, I first inserted the cable on the 3V3 hole, on the way to insert the second part of the cable, if it touches the processor shield, seems a kind of shortcut is made (i'm not an expert, but seems right to me that shield is wired to ground).

So i've repeated the process of SAFEBOOT various times without luck.

Any advice, any idea ?

Thanks

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Roberthh
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Re: Brick

Post by Roberthh » Mon Feb 01, 2016 9:00 pm

Shorting the 3.3 output to GND should not hurt. The 3.3 regulator of the WiPy is current limited at 2.8 Amps and thermally protected, the switching transistor at the input is rated at > 6 Amps. That looks all pretty robust. Can you tell, whether there is still 3.3 V on the output? How do you supply the Wipy? Is Vin fine?

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slothy
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Re: Brick

Post by slothy » Mon Feb 22, 2016 7:56 am

Roberthh wrote:Shorting the 3.3 output to GND should not hurt. The 3.3 regulator of the WiPy is current limited at 2.8 Amps and thermally protected, the switching transistor at the input is rated at > 6 Amps. That looks all pretty robust. Can you tell, whether there is still 3.3 V on the output? How do you supply the Wipy? Is Vin fine?
Hey!

Sorry, there has been a while, this afternoon i'll do the tests.

Thanks

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