ALL info needed are inside the "net4801 series boards and systems. User's Manual" that is available on Soekris website. Inside of it is written black on white : "3.11 D2, Error LED. This red LED is connected to the SC1100 processor GPIO20, pin D21. It is connected so that it will be on at power on,....". The GPIO on the board edge are connected to the PC87266. Pinning can be found section 3.5 of the same document.
For programming the error LED the rest of the info (register address and usage) can be found on the AMD Geode SC1100 Databook page 204 and following. 2007/11/22, ajv <[EMAIL PROTECTED]>: > > The net4801 contains a SC1100 processor and a PC87366 I/O controller. > Both chips have GPIO pins. I think the GPIO pins of the PC87366 are used. > To see how it is wired I would like to have the schematic diagram of the > 4801 printed > circuit board, but was unable to find it on the Soekris site. > > Is this diagram available? > > Anthony Vogelaar. > > ==================================================================== > > Antoine Zen-Ruffinen wrote: > > Have a look page 204 and following of the SC1100 databook. There is > > everything you need to program it. > > > > 2007/11/22, Antoine Zen-Ruffinen <[EMAIL PROTECTED]>: > > > >> Hello, > >> > >> If you look a the net4801, it is written section 3.11: " This red LED > >> is connected to the SC1100 processor GPIO20, pin D21. It is connected > >> so that it will be on at power on,....". Then you should have a look > >> at the SC1100 datasheet for how to program it. > >> > >> I have programmed the GPIO of the PC87366 unsing inb and outb, it work > >> fine. I assume you can do the same with the GPIO of the SC1100. > >> > >> Antoine > >> > >> 2007/11/22, ajv <[EMAIL PROTECTED]>: > >> > >>> Hello, > >>> > >>> I am programming the 4801 in assembler under Linux (Slax) > >>> Can you point me to a document or provide me with a piece of code > >>> written in assembler using direct port I/O (not using a kernel driver) > >>> to switch the error LED on and off? > >>> > >>> cat/proc/ioports shows : 6100-612B NatSemi SCx200 GPIO > >>> I assume I can use inb and outb into this region? > >>> > >>> Thanks in advance. > >>> > >>> _______________________________________________ > >>> Soekris-tech mailing list > >>> [email protected] > >>> http://lists.soekris.com/mailman/listinfo/soekris-tech > >>> > >>> > > > > > > > _______________________________________________ > Soekris-tech mailing list > [email protected] > http://lists.soekris.com/mailman/listinfo/soekris-tech > _______________________________________________ Soekris-tech mailing list [email protected] http://lists.soekris.com/mailman/listinfo/soekris-tech
