3 * Copyright (C) 2000 Bernardo Innocenti <bernie@codewiz.org>
4 * Copyright (C) 2003 Develer S.r.l. (http://www.develer.com/)
9 * \author Bernardo Innocenti <bernie@develer.com>
11 * \brief CPU specific serial I/O driver
16 * Revision 1.1 2004/05/23 18:10:11 bernie
17 * Import drv/ modules.
19 * Revision 1.1 2003/11/20 22:30:21 aleph
27 #define SER_HW_ENABLE_TX \
32 (INT_PEND1 |= INT1F_TI) \
36 static volatile bool ser_sending;
39 INTERRUPT(0x30) void TI_interrupt(void)
47 /* Can we send two bytes at the same time? */
48 if (SP_STAT & SPSF_TX_EMPTY)
50 SBUF = fifo_pop(&ser_txfifo);
59 SBUF = fifo_pop(&ser_txfifo);
62 INTERRUPT(0x32) void RI_interrupt(void)
64 ser_status |= SP_STAT &
65 (SPSF_OVERRUN_ERROR | SPSF_PARITY_ERROR | SPSF_FRAMING_ERROR);
66 if (fifo_isfull(&ser_rxfifo))
67 ser_status |= SERRF_RXFIFOOVERRUN;
69 fifo_push(&ser_rxfifo, SBUF);
72 static void ser_setbaudrate(unsigned long rate)
74 // Calcola il periodo per la generazione del baud rate richiesto
75 uint16_t baud = (uint16_t)(((CLOCK_FREQ / 16) / rate) - 1) | 0x8000;
76 BAUD_RATE = (uint8_t)baud;
77 BAUD_RATE = (uint8_t)(baud >> 8);
80 static void ser_hw_init(void)
82 // Inizializza la porta seriale
83 SP_CON = SPCF_RECEIVE_ENABLE | SPCF_MODE1;
84 ioc1_img |= IOC1F_TXD_SEL | IOC1F_EXTINT_SRC;
87 // Svuota il buffer di ricezione
92 // Abilita gli interrupt
93 INT_MASK1 |= INT1F_TI | INT1F_RI;