4 * Copyright (C) 2003,2004 Develer S.r.l. (http://www.develer.com/)
5 * Copyright (C) 2000 Bernardo Innocenti <bernie@codewiz.org>
6 * This file is part of DevLib - See devlib/README for information.
11 * \author Bernardo Innocenti <bernie@develer.com>
13 * \brief CPU specific serial I/O driver
18 * Revision 1.3 2004/06/03 11:27:09 bernie
19 * Add dual-license information.
21 * Revision 1.2 2004/05/23 18:21:53 bernie
22 * Trim CVS logs and cleanup header info.
29 #define SER_HW_ENABLE_TX \
34 (INT_PEND1 |= INT1F_TI) \
38 static volatile bool ser_sending;
41 INTERRUPT(0x30) void TI_interrupt(void)
49 /* Can we send two bytes at the same time? */
50 if (SP_STAT & SPSF_TX_EMPTY)
52 SBUF = fifo_pop(&ser_txfifo);
61 SBUF = fifo_pop(&ser_txfifo);
64 INTERRUPT(0x32) void RI_interrupt(void)
66 ser_status |= SP_STAT &
67 (SPSF_OVERRUN_ERROR | SPSF_PARITY_ERROR | SPSF_FRAMING_ERROR);
68 if (fifo_isfull(&ser_rxfifo))
69 ser_status |= SERRF_RXFIFOOVERRUN;
71 fifo_push(&ser_rxfifo, SBUF);
74 static void ser_setbaudrate(unsigned long rate)
76 // Calcola il periodo per la generazione del baud rate richiesto
77 uint16_t baud = (uint16_t)(((CLOCK_FREQ / 16) / rate) - 1) | 0x8000;
78 BAUD_RATE = (uint8_t)baud;
79 BAUD_RATE = (uint8_t)(baud >> 8);
82 static void ser_hw_init(void)
84 // Inizializza la porta seriale
85 SP_CON = SPCF_RECEIVE_ENABLE | SPCF_MODE1;
86 ioc1_img |= IOC1F_TXD_SEL | IOC1F_EXTINT_SRC;
89 // Svuota il buffer di ricezione
94 // Abilita gli interrupt
95 INT_MASK1 |= INT1F_TI | INT1F_RI;