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Topic: ATMEL Mega1284P evaluation board avalible (Read 76 times) previous topic - next topic

CrossRoads

You guys ok with just one working SD socket? I am pretty sure the library for the uSD has the pins swapped end for end.

Can anyone confirm?

Here's a blog with definition of the pins.

http://elasticsheep.com/2010/01/reading-an-sd-card-with-an-atmega168/
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

skyjumper


You guys ok with just one working SD socket? I am pretty sure the library for the uSD has the pins swapped end for end.

Can anyone confirm?

Here's a blog with definition of the pins.

http://elasticsheep.com/2010/01/reading-an-sd-card-with-an-atmega168/


I know I could be shot for pointing this out, but if the iossue is that the pins for the uSD card are hooked up backwards, well that's fixable in software (DUCKING)...

CrossRoads

Ha ha, never thought I'd hear that from a software guy! XD

But in this case, sadly is not true.

Here's why:
Needs to be, What it is
1 NC            NC
2 NC            Data Out
3 CS            GND
4 Data IN      SCK
5 +5V           +5V
6 SCK          Data In
7 GND          CS
8 Data Out    NC
9 NC            NC

Everything comes from hardware SPI tho, so it can't be faked in software.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

skyjumper

Oh that's a shame, so you need new PCBs. That sucks. But hey, how many designes work ont he first try?

skyjumper

Oh wait, was the problem that the lib is wrong, or could it be that Eagle didn't mirror the bottom layer when you made the gerbers?

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