Start thinking what features will have a Jaluino board with 18F47J53... (I would like to be able tu use RTC,, useful for a SD Card logger). Then start cutting for a smaller board as Jaluino BEE (Pinout is very important - where is possible). So, better to start with a 10x10cm board ? ;)
Vasi On Feb 6, 6:02 pm, Sebastien Lelong <[email protected]> wrote: > 18F27J53 has two MSSP modules. MSSP1 can be used for both I²C and SPI, while > MSSP2 can only be used for SPI. Since I want i²C, and SPI for embedded > sd-card, I²C must use RB4 and RB5 pins (pullups for SDA1 and SCL1). > > I thus need to use different pins for SPI. MSSP2 has remappable pins (RPn > pins on datasheets, see screenshot). Interesting feature, I'm supposed to > select whatever remappable pins needed for SPI... Need more thoughts, but I > think I'll remap them on RP2, RP11, RP12 and RP13. > > Datasheet reading......... > > [image: 18f27j53.png] > > Cheers, > Seb > > 2011/2/6 Sebastien Lelong <[email protected]> > > > > > Hi Vasi, > > > 2011/2/6 funlw65(Vasi) <[email protected]> > > >> The board will be less general with the two 4k7 resistors on RB1-2... > > > Arf... These were supposed to be I²C pull-up resistors, but they aren't > > connected to the correct pins ! Nice catch, thanks, I'll fix this asap ! If > > you don't want this feature, just don't solder resistors, that's the idea. > > > BTW I tried to move traces and add more spaces as you suggested. I'll post > > the result soon. > > > cheers, > > Seb > > -- > Sébastien Lelonghttp://www.sirloon.nethttp://sirbot.org > > 18f27j53.png > 56KViewDownload -- You received this message because you are subscribed to the Google Groups "jallib" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/jallib?hl=en.
