Hi luisa, Congratulations! You did a nice job. BR Wayne
On 7/19/10, Luisa <[email protected]> wrote: > Guys! Success!! > > I've just read the full atr out of the card! > > How nice!! I haven't got words to say how much appreciate your > patience, help and support, as any of this wouldn't have been possible > with your tips. > > Well, my findings: > > * With my card, I can read from 500 Khz to 4 Mhz, haven't test 5 Mhz yet. > > * The higher the frequency applied to the card's clock-line is, the > most it takes to return an atr after the TS byte. Then I recalled what > you said Sebastien, that atr is given by software, so it all starts > making sense. > > As soon as I got this working, been trying to connect the chip the > serial port, but it seems the maxim on my adaptor is not up or it > today, so I'll see tomorrow what's wrong with it or make a new one. > > The crystals haven't arrived so far, so the clock line is output by > the chip as well, the bits are read one by one till it gets a byte, > but it works so reliably!. > > The good point of going this lowlevel instead of by usart, is that I > can implement error reporting by means of holding the line low, which > I coulnd't do if using the hardware usart module, appart from > supporting synchronous cards, etc. > > Anyways, I'm so happy, can't wait to have the maxim circuit working so > as to go further with this. > As soon as I have the circuit talking to the pc I'll upload code and > schematics. > > Also, would the specs @ cardwerk I mentioned be up to date regarding > the command protocol? I guess they would. > > hmm, there's soemthing else I was curious about, but can remember now, > will leave it for latter. > > Thanks! > > Regards, > > > > On 7/9/10, Sébastien Lorquet <[email protected]> wrote: >> I was ascertained by my "personal card expert" that the lower limit is >> guaranteed to be lower than 1MHz, so that frequency shall be OK. >> >> Sebastien >> >> On Fri, Jul 9, 2010 at 4:54 PM, Drasko DRASKOVIC >> <[email protected] >>> wrote: >> >>> On Fri, Jul 9, 2010 at 4:04 PM, Sébastien Lorquet <[email protected]> >>> wrote: >>> > Beware: the line is *toggled* every 10 clock pulses, so a period is 20 >>> > pulses or 1 MHz :) >>> >>> Yes, you're right. In that case, rising up this frequency is worth >>> trying, as you mentioned, because we might be on a low limit... >>> >>> _______________________________________________ >>> Muscle mailing list >>> [email protected] >>> http://lists.drizzle.com/mailman/listinfo/muscle >>> >> > > _______________________________________________ > Muscle mailing list > [email protected] > http://lists.drizzle.com/mailman/listinfo/muscle > _______________________________________________ Muscle mailing list [email protected] http://lists.drizzle.com/mailman/listinfo/muscle
