EXAMPLES
To present the value 0x5a to the data port, drive STROBE low and then high again, the following code fragment can be used:
int fd;
u_int8_t val;
val = 0x5a;
ioctl(fd, PPISDATA, &val);
ioctl(fd, PPIGCTRL, &val);
val |= STROBE;
ioctl(fd, PPISCTRL, &val);
val &= ~STROBE;
ioctl(fd, PPISCTRL, &val);
BUGS
The inverse sense of signals is confusing. The ioctl interface is slow, and there is no way (yet) to chain multiple operations together.
The headers required for user applications are not installed as part of the standard system.
