My program uses the userspace parport driver to control a JTAG
interface. Preferably I would like to use full width operations
on the port, however since parport0 is a character device, I must r/w using
I.e. I use the following to write to the data byte:
result = ioctl(fd, PPRDATA, &d);
Using many ioctl calls are slowing my parport access down greatly.
I'm acheiving a ~90kHz data rate on a port that should handle ~200kHz.
Is there a way to read/write a block of data out over the port at a
Any insight appreciated.
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This archive was generated by hypermail 2b29 : Thu Jan 31 2002 - 01:24:11 EST