+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction. Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License. This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright (C) 2003,2004 Develer S.r.l. (http://www.develer.com/)
+ * Copyright (C) 2000 Bernardo Innocenti <bernie@codewiz.org>
+ *
+ * -->
+ *
+ * \version $Id$
+ *
+ * \author Bernardo Innocenti <bernie@develer.com>
+ *
+ * \brief CPU specific serial I/O driver
+ */
+
+/*#*
+ *#* $Log$
+ *#* Revision 1.7 2006/07/19 12:56:26 bernie
+ *#* Convert to new Doxygen style.
+ *#*
+ *#* Revision 1.6 2005/11/04 16:20:02 bernie
+ *#* Fix reference to README.devlib in header.
+ *#*
+ *#* Revision 1.5 2004/12/13 11:51:08 bernie
+ *#* DISABLE_INTS/ENABLE_INTS: Convert to IRQ_DISABLE/IRQ_ENABLE.
+ *#*
+ *#* Revision 1.4 2004/08/25 14:12:08 rasky
+ *#* Aggiornato il comment block dei log RCS
+ *#*
+ *#* Revision 1.3 2004/06/03 11:27:09 bernie
+ *#* Add dual-license information.
+ *#*
+ *#* Revision 1.2 2004/05/23 18:21:53 bernie
+ *#* Trim CVS logs and cleanup header info.
+ *#*
+ *#*/
+
+#include "hw.h"
+#include "serhw.h"
+
+#define SER_HW_ENABLE_TX \
+ ATOMIC( \
+ if (!ser_sending) \
+ { \
+ ser_sending = true; \
+ (INT_PEND1 |= INT1F_TI) \
+ } \
+ );
+
+static volatile bool ser_sending;
+
+// Serial TX intr
+INTERRUPT(0x30) void TI_interrupt(void)
+{
+ if (CANT_SEND)
+ {
+ ser_sending = false;
+ return;
+ }
+
+ /* Can we send two bytes at the same time? */
+ if (SP_STAT & SPSF_TX_EMPTY)
+ {
+ SBUF = fifo_pop(&ser_txfifo);
+
+ if (CANT_SEND)
+ {
+ ser_sending = false;
+ return;
+ }
+ }
+
+ SBUF = fifo_pop(&ser_txfifo);
+}
+
+INTERRUPT(0x32) void RI_interrupt(void)
+{
+ ser_status |= SP_STAT &
+ (SPSF_OVERRUN_ERROR | SPSF_PARITY_ERROR | SPSF_FRAMING_ERROR);
+ if (fifo_isfull(&ser_rxfifo))
+ ser_status |= SERRF_RXFIFOOVERRUN;
+ else
+ fifo_push(&ser_rxfifo, SBUF);
+}
+
+static void ser_setbaudrate(unsigned long rate)
+{
+ // Calcola il periodo per la generazione del baud rate richiesto
+ uint16_t baud = (uint16_t)(((CLOCK_FREQ / 16) / rate) - 1) | 0x8000;
+ BAUD_RATE = (uint8_t)baud;
+ BAUD_RATE = (uint8_t)(baud >> 8);
+}
+
+static void ser_hw_init(void)
+{
+ // Inizializza la porta seriale
+ SP_CON = SPCF_RECEIVE_ENABLE | SPCF_MODE1;
+ ioc1_img |= IOC1F_TXD_SEL | IOC1F_EXTINT_SRC;
+ IOC1 = ioc1_img;
+
+ // Svuota il buffer di ricezione
+ {
+ uint8_t dummy = SBUF;
+ }
+
+ // Abilita gli interrupt
+ INT_MASK1 |= INT1F_TI | INT1F_RI;
+}
+