Hi Frank and Christophe Frank Pagliughi wrote:
> Hi, I was going to grab my SAM3 eval boards from the closet, but to make > space for them on my desk I had to put away the Micromint Eagle 100 > board that was sitting there. Then got to thinking the Eagle 100 would > be a really good board for eCos. It's a COTS board around a Stellaris > LM3S6918 with a decent amount of I/O. I'm not an Ethernet guy, so I > probably couldn't get networking going on the board, but could probably > manage the rest of the port pretty quickly. > > I looked at the existing Stellaris eCos port for the lm3s8xx, and > thought to make a corresponding lm3s6xxx. But on closer inspection, I > found 19 processors in the 6000 series, all with different memory sizes > and I/O. The only thing they share in common is that they have Ethernet > but not CAN. The 8000 series has Ethernet and CAN. The 5000 series has > CAN and USB. And so on... > > So the breakdown of the Stellaris series doesn't exactly mesh with eCos > directory structure, since the chip internals may have more in common > with chips across the different series than within it. > > So I'm at a loss on how to proceed. Any advice? A quick glance of the parametric search table suggests that the various sub-families of LM3S parts do indeed offer different permutations of on-chip peripherals. I expect that all these parts can be accommodated by extending the existing eCos LM3S8xx variant HAL package. Christophe, do you concur? John Dallaway eCos maintainer http://www.dallaway.org.uk/john
