* 38400bps on a 16MHz 80196.
*
* MODULE CONFIGURATION
- * \li \c CONFIG_SER_HWHANDSHAKE define this preprocessor symbol to enable
- * support for RTS/CTS handshake. Support is incomplete/untested
- * for 80196.
+ *
+ * \li \c CONFIG_SER_HWHANDSHAKE - set to 1 to enable RTS/CTS handshake.
+ * Support is incomplete/untested.
* \li \c CONFIG_SER_TXTIMEOUT - Enable software serial transmission timeouts
*
*
* \author Bernardo Innocenti <bernie@develer.com>
*/
-/*
- * $Log$
- * Revision 1.8 2004/07/29 22:57:09 bernie
- * ser_drain(): New function; Make Serial::is_open a debug-only feature; Switch to new-style CONFIG_* macros.
- *
- * Revision 1.7 2004/07/18 21:49:03 bernie
- * Make CONFIG_SER_DEFBAUDRATE optional.
- *
- * Revision 1.6 2004/06/07 15:56:28 aleph
- * Remove cast-as-lvalue extension abuse
- *
- * Revision 1.5 2004/06/06 16:41:44 bernie
- * ser_putchar(): Use fifo_push_locked() to fix potential race on 8bit processors.
- *
- * Revision 1.4 2004/06/03 11:27:09 bernie
- * Add dual-license information.
- *
- * Revision 1.3 2004/06/02 21:35:24 aleph
- * Serial enhancements: interruptible receive handler and 8 bit serial status for AVR; remove volatile attribute to FIFOBuffer, useless for new fifobuf routens
- *
- * Revision 1.2 2004/05/23 18:21:53 bernie
- * Trim CVS logs and cleanup header info.
- *
- */
+/*#*
+ *#* $Log$
+ *#* Revision 1.17 2004/09/14 21:06:07 bernie
+ *#* Use debug.h instead of kdebug.h; Spelling fixes.
+ *#*
+ *#* Revision 1.16 2004/09/06 21:40:50 bernie
+ *#* Move buffer handling in chip-specific driver.
+ *#*
+ *#* Revision 1.15 2004/08/25 14:12:08 rasky
+ *#* Aggiornato il comment block dei log RCS
+ *#*
+ *#* Revision 1.14 2004/08/24 16:22:57 bernie
+ *#* Thinkos; Doxygen fixes
+ *#*
+ *#* Revision 1.13 2004/08/24 16:20:48 bernie
+ *#* ser_read(): Make buffer argument void *#* for consistency with ANSI C and ser_write()
+ *#*
+ *#* Revision 1.12 2004/08/24 13:49:39 bernie
+ *#* Fix thinko.
+ *#*
+ *#* Revision 1.11 2004/08/15 05:32:22 bernie
+ *#* ser_resync(): New function.
+ *#*
+ *#* Revision 1.10 2004/08/10 06:29:50 bernie
+ *#* Rename timer_gettick() to timer_ticks().
+ *#*
+ *#* Revision 1.9 2004/08/08 06:06:20 bernie
+ *#* Use new-style CONFIG_ idiom; Fix module-wide documentation.
+ *#*
+ *#* Revision 1.8 2004/07/29 22:57:09 bernie
+ *#* ser_drain(): New function; Make Serial::is_open a debug-only feature; Switch to new-style CONFIG_* macros.
+ *#*
+ *#* Revision 1.7 2004/07/18 21:49:03 bernie
+ *#* Make CONFIG_SER_DEFBAUDRATE optional.
+ *#*
+ *#* Revision 1.6 2004/06/07 15:56:28 aleph
+ *#* Remove cast-as-lvalue extension abuse
+ *#*
+ *#* Revision 1.5 2004/06/06 16:41:44 bernie
+ *#* ser_putchar(): Use fifo_push_locked() to fix potential race on 8bit processors.
+ *#*
+ *#* Revision 1.4 2004/06/03 11:27:09 bernie
+ *#* Add dual-license information.
+ *#*
+ *#* Revision 1.3 2004/06/02 21:35:24 aleph
+ *#* Serial enhancements: interruptible receive handler and 8 bit serial status for AVR; remove volatile attribute to FIFOBuffer, useless for new fifobuf routens
+ *#*
+ *#* Revision 1.2 2004/05/23 18:21:53 bernie
+ *#* Trim CVS logs and cleanup header info.
+ *#*
+ *#*/
#include <mware/formatwr.h>
-#include <drv/kdebug.h>
+#include <debug.h>
#include "ser.h"
#include "ser_p.h"
#include "hw.h"
*/
int ser_putchar(int c, struct Serial *port)
{
+ //ASSERT_VALID_FIFO(&port->txfifo);
if (fifo_isfull_locked(&port->txfifo))
{
#if CONFIG_SER_TXTIMEOUT != -1
- time_t start_time = timer_gettick();
+ time_t start_time = timer_ticks();
#endif
/* Attende finche' il buffer e' pieno... */
do
{
-#ifdef CONFIG_KERN_SCHED
+#if defined(CONFIG_KERN_SCHED) && CONFIG_KERN_SCHED
/* Give up timeslice to other processes. */
proc_switch();
#endif
#if CONFIG_SER_TXTIMEOUT != -1
- if (timer_gettick() - start_time >= port->txtimeout)
+ if (timer_ticks() - start_time >= port->txtimeout)
{
port->status |= SERRF_TXTIMEOUT;
return EOF;
if (fifo_isempty_locked(&port->rxfifo))
{
#if CONFIG_SER_RXTIMEOUT != -1
- time_t start_time = timer_gettick();
+ time_t start_time = timer_ticks();
#endif
/* Wait while buffer is empty */
do
proc_switch();
#endif
#if CONFIG_SER_RXTIMEOUT != -1
- if (timer_gettick() - start_time >= port->rxtimeout)
+ if (timer_ticks() - start_time >= port->rxtimeout)
{
port->status |= SERRF_RXTIMEOUT;
return EOF;
* Get a byte from the FIFO (avoiding sign-extension),
* re-enable RTS, then return result.
*/
- result = (int)(unsigned char)fifo_pop(&port->rxfifo);
+ result = (int)(unsigned char)fifo_pop_locked(&port->rxfifo);
return port->status ? EOF : result;
}
return EOF;
/* NOTE: the double cast prevents unwanted sign extension */
- return (int)(unsigned char)fifo_pop(&port->rxfifo);
+ return (int)(unsigned char)fifo_pop_locked(&port->rxfifo);
}
/*!
- * Read at most size bytes and puts them
- * in buf.
- * \return number of bytes read or EOF in case
- * of error.
+ * Read at most \a size bytes from \a port and put them in \a buf
+ *
+ * \return number of bytes actually read, or EOF in
+ * case of error.
*/
-int ser_read(struct Serial *port, char *buf, size_t size)
+int ser_read(struct Serial *port, void *buf, size_t size)
{
size_t i = 0;
+ char *_buf = (char *)buf;
int c;
while (i < size)
{
if ((c = ser_getchar(port)) == EOF)
return EOF;
- buf[i++] = c;
+ _buf[i++] = c;
}
return i;
}
#endif /* CONFIG_SER_RXTIMEOUT || CONFIG_SER_TXTIMEOUT */
+#if CONFIG_SER_RXTIMEOUT != -1
+/*!
+ * Discard input to resynchronize with remote end.
+ *
+ * Discard incoming data until the port stops receiving
+ * characters for at least \a delay milliseconds.
+ *
+ * \note Serial errors are reset before and after executing the purge.
+ */
+void ser_resync(struct Serial *port, time_t delay)
+{
+ time_t old_rxtimeout = port->rxtimeout;
+
+ ser_settimeouts(port, delay, port->txtimeout);
+ do
+ {
+ ser_setstatus(port, 0);
+ ser_getchar(port);
+ }
+ while (!(ser_getstatus(port) & SERRF_RXTIMEOUT));
+
+ /* Restore port to an usable status */
+ ser_setstatus(port, 0);
+ ser_settimeouts(port, old_rxtimeout, port->txtimeout);
+}
+#endif /* CONFIG_SER_RXTIMEOUT */
+
void ser_setbaudrate(struct Serial *port, unsigned long rate)
{
/*!
* Flush both the RX and TX buffers.
*/
-void ser_purge(struct Serial *ser)
+void ser_purge(struct Serial *port)
{
- fifo_flush_locked(&ser->rxfifo);
- fifo_flush_locked(&ser->txfifo);
+ fifo_flush_locked(&port->rxfifo);
+ fifo_flush_locked(&port->txfifo);
}
+
/*!
* Wait until all pending output is completely
* transmitted to the other end.
*/
void ser_drain(struct Serial *ser)
{
- while(!fifo_isempty(&ser->txfifo))
+ while (!fifo_isempty(&ser->txfifo))
{
#if defined(CONFIG_KERN_SCHED) && CONFIG_KERN_SCHED
/* Give up timeslice to other processes. */
port->unit = unit;
- /* Initialize circular buffer */
- fifo_init(&port->rxfifo, port->rxbuffer, sizeof(port->rxbuffer));
- fifo_init(&port->txfifo, port->txbuffer, sizeof(port->txbuffer));
-
port->hw = ser_hw_getdesc(unit);
+
+ /* Initialize circular buffers */
+ fifo_init(&port->txfifo, port->hw->txbuffer, port->hw->txbuffer_size);
+ fifo_init(&port->rxfifo, port->hw->rxbuffer, port->hw->rxbuffer_size);
+
port->hw->table->init(port->hw, port);
/* Set default values */
projects / bertos.git / blobdiff