Tim, See bellow...
[]'s, Scop mailto:scop at vanet.com.br ------------------------------------------------------------------ It might look like I'm doing nothing, but at the cellular level I'm really quite busy. Friday, June 21, 2002, 4:42:34 PM, you wrote: TL> I am interested in both input/output operation TL> on the console. If I just set CONFIG_SERIAL_CONSOLE, TL> will I be able read input from the console? TL> The main application will be started from init(), TL> and the application will need to read and write TL> to the console. Are there are method to communicate TL> to the serial port other than open("/dev/ttyS0")? Not AFAIK. The VFS (Virtual File System) is at the very heart of Linux and _is_ the abstraction used to deal with I/O devices. You don't need to try avoiding it. A simple initrd will do the job and can be as light as you make it. >> >> You don't need a filesystem to get output on the >> serial console >> you just need to enable the console with >> CONFIG_SERIAL_CONSOLE=y >> in your kernel configuration (atleast for mpc860 >> that all) >> but you will have a hard time producing much more >> than a blinking >> cursor if you boot a Linux kernel and have no >> application that >> it then can run on the root-filesystem - what would >> be the point >> of such a setup - 1MB kernel code for a blinking >> cursor on a >> serial port seems expensive. you get the network protocol stacks, too... ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/