2 * Copyright © 2009 Keith Packard <keithp@keithp.com>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 2 of the License.
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public License along
14 * with this program; if not, write to the Free Software Foundation, Inc.,
15 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
21 * Basic I/O functions to support SDCC stdio package
24 #ifndef USE_SERIAL_0_STDIN
25 #define USE_SERIAL_0_STDIN 0
27 #ifndef USE_SERIAL_1_STDIN
28 #define USE_SERIAL_1_STDIN 0
30 #ifndef USE_SERIAL_2_STDIN
31 #define USE_SERIAL_2_STDIN 0
33 #ifndef USE_SERIAL_3_STDIN
34 #define USE_SERIAL_3_STDIN 0
36 #ifndef USE_SERIAL_4_STDIN
37 #define USE_SERIAL_4_STDIN 0
39 #ifndef USE_SERIAL_5_STDIN
40 #define USE_SERIAL_5_STDIN 0
42 #ifndef USE_SERIAL_6_STDIN
43 #define USE_SERIAL_6_STDIN 0
45 #ifndef USE_SERIAL_7_STDIN
46 #define USE_SERIAL_7_STDIN 0
48 #ifndef USE_SERIAL_8_STDIN
49 #define USE_SERIAL_8_STDIN 0
51 #ifndef USE_SERIAL_9_STDIN
52 #define USE_SERIAL_9_STDIN 0
54 #ifndef PACKET_HAS_SLAVE
55 #define PACKET_HAS_SLAVE 0
58 #define USE_SERIAL_STDIN (USE_SERIAL_0_STDIN + \
59 USE_SERIAL_1_STDIN + \
60 USE_SERIAL_2_STDIN + \
61 USE_SERIAL_3_STDIN + \
62 USE_SERIAL_4_STDIN + \
63 USE_SERIAL_5_STDIN + \
64 USE_SERIAL_6_STDIN + \
65 USE_SERIAL_7_STDIN + \
66 USE_SERIAL_8_STDIN + \
69 #define AO_NUM_STDIOS (HAS_USB + PACKET_HAS_SLAVE + USE_SERIAL_STDIN)
71 __xdata struct ao_stdio ao_stdios[AO_NUM_STDIOS];
74 __pdata int8_t ao_cur_stdio;
75 __pdata int8_t ao_num_stdios;
77 __pdata int8_t ao_cur_stdio;
78 #define ao_cur_stdio 0
79 #define ao_num_stdios 0
87 extern void ao_debug_out(char c);
95 (*ao_stdios[ao_cur_stdio].putchar)('\r');
96 (*ao_stdios[ao_cur_stdio].putchar)(c);
102 if (ao_stdios[ao_cur_stdio].flush)
103 ao_stdios[ao_cur_stdio].flush();
106 __xdata uint8_t ao_stdin_ready;
109 getchar(void) __reentrant
114 ao_arch_block_interrupts();
115 stdio = ao_cur_stdio;
117 c = ao_stdios[stdio]._pollchar();
118 if (c != AO_READ_AGAIN)
120 #if AO_NUM_STDIOS > 1
121 if (++stdio == ao_num_stdios)
123 if (stdio == ao_cur_stdio)
125 ao_sleep(&ao_stdin_ready);
127 #if AO_NUM_STDIOS > 1
128 ao_cur_stdio = stdio;
130 ao_arch_release_interrupts();
137 return ao_stdios[ao_cur_stdio].echo;
141 ao_add_stdio(int (*_pollchar)(void),
142 void (*putchar)(char),
143 void (*flush)(void)) __reentrant
145 if (ao_num_stdios == AO_NUM_STDIOS)
146 ao_panic(AO_PANIC_STDIO);
147 ao_stdios[ao_num_stdios]._pollchar = _pollchar;
148 ao_stdios[ao_num_stdios].putchar = putchar;
149 ao_stdios[ao_num_stdios].flush = flush;
150 ao_stdios[ao_num_stdios].echo = 1;
151 #if AO_NUM_STDIOS > 1
152 return ao_num_stdios++;