Hallo all: File cpukit/libcsupport/include/rtems/termiostypes.h defines the following constants:
/* * FIXME: this should move to libio.h! * values for rtems_termios_callbacks.outputUsesInterrupts */ #define TERMIOS_POLLED 0 #define TERMIOS_IRQ_DRIVEN 1 #define TERMIOS_TASK_DRIVEN 2 However, some modules initialise rtems_termios_callbacks structures with fixed values like this: .outputUsesInterrupts = 1, Others use one of the constants above. I noticed because some drivers initialise a similar field in structure console_fns with true/false, while others use the same constants as above. Routine console_open() in c/src/lib/libbsp/shared/console.c copies this flag as follows: Callbacks.outputUsesInterrupts = cptr->pDeviceFns->deviceOutputUsesInterrupts; That is copying information from structure console_fns to structure rtems_termios_callbacks, but cptr->pDeviceFns->deviceOutputUsesInterrupts is of type bool, whereas Callbacks.outputUsesInterrupts is an int. What does TERMIOS_TASK_DRIVEN mean anyway? I didn't manage to find any documentation about it. Thanks, rdiez _______________________________________________ rtems-devel mailing list [email protected] http://www.rtems.org/mailman/listinfo/rtems-devel
