4 Copyright 2008, 2009 Michel Pollet <buserror@gmail.com>
6 This file is part of simavr.
8 simavr is free software: you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation, either version 3 of the License, or
11 (at your option) any later version.
13 simavr is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with simavr. If not, see <http://www.gnu.org/licenses/>.
22 #ifndef __AVR_IOPORT_H__
23 #define __AVR_IOPORT_H__
29 IOPORT_IRQ_PIN1,IOPORT_IRQ_PIN2,IOPORT_IRQ_PIN3,IOPORT_IRQ_PIN4,
30 IOPORT_IRQ_PIN5,IOPORT_IRQ_PIN6,IOPORT_IRQ_PIN7,
32 IOPORT_IRQ_DIRECTION_ALL,
36 #define AVR_IOPORT_OUTPUT 0x100
38 // add port name (uppercase) to get the real IRQ
39 #define AVR_IOCTL_IOPORT_GETIRQ(_name) AVR_IOCTL_DEF('i','o','g',(_name))
42 // this ioctl takes a avr_regbit_t, compares the register address
43 // to PORT/PIN/DDR and return the corresponding IRQ(s) if it matches
44 typedef struct avr_ioport_getirq_t {
45 avr_regbit_t bit; // bit wanted
46 avr_irq_t * irq[8]; // result, terminated by NULL if < 8
47 } avr_ioport_getirq_t;
49 #define AVR_IOCTL_IOPORT_GETIRQ_REGBIT AVR_IOCTL_DEF('i','o','g','r')
52 * ioctl used to get a port state.
54 * for (int i = 'A'; i <= 'F'; i++) {
55 * avr_ioport_state_t state;
56 * if (avr_ioctl(AVR_IOCTL_IOPORT_GETSTATE(i), &state) == 0)
57 * printf("PORT%c %02x DDR %02x PIN %02x\n",
58 * state.name, state.port, state.ddr, state.pin);
61 typedef struct avr_ioport_state_t {
62 unsigned long name : 7,
63 port : 8, ddr : 8, pin : 8;
66 // add port name (uppercase) to get the port state
67 #define AVR_IOCTL_IOPORT_GETSTATE(_name) AVR_IOCTL_DEF('i','o','s',(_name))
72 typedef struct avr_iopin_t {
73 uint16_t port : 8; ///< port e.g. 'B'
74 uint16_t pin : 8; ///< pin number
76 #define AVR_IOPIN(_port, _pin) { .port = _port, .pin = _pin }
79 * Definition for an IO port
81 typedef struct avr_ioport_t {
88 avr_int_vector_t pcint; // PCINT vector
89 avr_io_addr_t r_pcint; // pcint 8 pins mask
92 void avr_ioport_init(avr_t * avr, avr_ioport_t * port);
95 #endif /* __AVR_IOPORT_H__ */