On 02/11/2011 10:29 PM, mattschinkel wrote:
Well, it is an option since you only need to change the device include
block and pins. PIC18F4458 should be good (2kb ram). I see it runs up
to 48mhz which is great.
Matt...
I've run into a bit of a problem with the PIC18F4458 chip.
Two of the three SPI pins are multiplexed on Port B!
Specifically SCK is multiplexed with RB1, and SDI is multiplexed with RB0.
SDO on this chip is multiplexed with RC7/RX, which isn't a problem.
Given that Port A only has 5 pins (6 if you don't use OSC2), and Port C
has lost RC3 to VUSB on this chip,
Port B is the only viable option for the lower byte.
Wouldn't this make SPI unusable?
Does Jallib provide away to "bit-bang" SPI on other pins?
Thanks
Lyos Gemini Norezel
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