4 * Copyright (C) 2003 Develer S.r.l. (http://www.develer.com/)
5 * Copyright (C) 2000 Bernardo Innocenti <bernie@codewiz.org>
11 * \author Bernardo Innocenti <bernie@develer.com>
13 * \brief CPU specific serial I/O driver
18 * Revision 1.2 2004/05/23 18:21:53 bernie
19 * Trim CVS logs and cleanup header info.
26 #define SER_HW_ENABLE_TX \
31 (INT_PEND1 |= INT1F_TI) \
35 static volatile bool ser_sending;
38 INTERRUPT(0x30) void TI_interrupt(void)
46 /* Can we send two bytes at the same time? */
47 if (SP_STAT & SPSF_TX_EMPTY)
49 SBUF = fifo_pop(&ser_txfifo);
58 SBUF = fifo_pop(&ser_txfifo);
61 INTERRUPT(0x32) void RI_interrupt(void)
63 ser_status |= SP_STAT &
64 (SPSF_OVERRUN_ERROR | SPSF_PARITY_ERROR | SPSF_FRAMING_ERROR);
65 if (fifo_isfull(&ser_rxfifo))
66 ser_status |= SERRF_RXFIFOOVERRUN;
68 fifo_push(&ser_rxfifo, SBUF);
71 static void ser_setbaudrate(unsigned long rate)
73 // Calcola il periodo per la generazione del baud rate richiesto
74 uint16_t baud = (uint16_t)(((CLOCK_FREQ / 16) / rate) - 1) | 0x8000;
75 BAUD_RATE = (uint8_t)baud;
76 BAUD_RATE = (uint8_t)(baud >> 8);
79 static void ser_hw_init(void)
81 // Inizializza la porta seriale
82 SP_CON = SPCF_RECEIVE_ENABLE | SPCF_MODE1;
83 ioc1_img |= IOC1F_TXD_SEL | IOC1F_EXTINT_SRC;
86 // Svuota il buffer di ricezione
91 // Abilita gli interrupt
92 INT_MASK1 |= INT1F_TI | INT1F_RI;