The DigiX > DigiX Support
DigiX Pinout documentation
gogol:
My biggest problem right now is, that it looks like, that I am missing a piece of information in understanding PWM.
According to the DUE documentation PWM outputs are on the pins 2-13, which are: PD2-PD13
According to the Atmel-Reference of the SAM3X8E there are 8 PWM.channels with Independent Complementary Outputs (Chapter 39.2)
Each of those 8 channels has two OUTPUTS PWMHx and PWMLx (Chapter 39.4)
The single IO-lines from Chapter 39.5.1 don't fit to the DUE-PWM-pins.
Is PWM on the DUE software based? Do I miss something in the Atmel spec, that PWM can be remapped to other pins?
Its for sure, that analog analogWrite() generates PWM on the labeled PWM-pins, however I don't understand why, when looking into the Atmel specs.
Can anyone bring in some light here? Where is the missing piece of information?
gogol:
@Michael:
I can help you with pictures from the board!
I just added them to the wiki.
http://digistump.com/wiki/digix/tutorials/board-version-1-0-aug2013
MichaelMeissner:
Thanks, it looks like I got the high pins completely wrong. I thought the second row of pins on the top were 79-99, and the pins above 99 where on pads underneath the board, but according to the silkscreen it is 90 - 113, with a reset and ground pin thrown in for good measure.
gogol:
Underneath are no pins, only open and closed solder-bridges for enabling/disabling certain features.
The additional pins are on the outside row on the power-connector-side from the board.
The Audio-jack-side, the two-row bottom and the inner power-connector row are almost compatible to the due.
The difference is, that the UART is tied to Wifi instead to the 16u2, but that makes no difference for the pins.
The level shifter shield will also fit into an DUE and connects only to the inner row and lets the additional row free.
That means, the digiX is a little bid wider than a DUE and there is no level shifting for the additional pins.
gogol:
Has anybody already tried, to work with virtual PIN AD15, which is inside the SAM8X3E connected to an temperature sensor?
Anything in the libraries to access it?
(Atmel reference chapter 44.4, page 1330ff )
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