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; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
22 * Basic I/O functions to support SDCC stdio package
25 #ifndef USE_SERIAL_0_STDIN
26 #define USE_SERIAL_0_STDIN 0
28 #ifndef USE_SERIAL_1_STDIN
29 #define USE_SERIAL_1_STDIN 0
31 #ifndef USE_SERIAL_2_STDIN
32 #define USE_SERIAL_2_STDIN 0
34 #ifndef USE_SERIAL_3_STDIN
35 #define USE_SERIAL_3_STDIN 0
37 #ifndef USE_SERIAL_4_STDIN
38 #define USE_SERIAL_4_STDIN 0
40 #ifndef USE_SERIAL_5_STDIN
41 #define USE_SERIAL_5_STDIN 0
43 #ifndef USE_SERIAL_6_STDIN
44 #define USE_SERIAL_6_STDIN 0
46 #ifndef USE_SERIAL_7_STDIN
47 #define USE_SERIAL_7_STDIN 0
49 #ifndef USE_SERIAL_8_STDIN
50 #define USE_SERIAL_8_STDIN 0
52 #ifndef USE_SERIAL_9_STDIN
53 #define USE_SERIAL_9_STDIN 0
55 #ifndef PACKET_HAS_SLAVE
56 #define PACKET_HAS_SLAVE 0
59 #define USE_SERIAL_STDIN (USE_SERIAL_0_STDIN + \
60 USE_SERIAL_1_STDIN + \
61 USE_SERIAL_2_STDIN + \
62 USE_SERIAL_3_STDIN + \
63 USE_SERIAL_4_STDIN + \
64 USE_SERIAL_5_STDIN + \
65 USE_SERIAL_6_STDIN + \
66 USE_SERIAL_7_STDIN + \
67 USE_SERIAL_8_STDIN + \
70 #define AO_NUM_STDIOS (HAS_USB + PACKET_HAS_SLAVE + USE_SERIAL_STDIN)
72 __xdata struct ao_stdio ao_stdios[AO_NUM_STDIOS];
75 __pdata int8_t ao_cur_stdio;
76 __pdata int8_t ao_num_stdios;
78 __pdata int8_t ao_cur_stdio;
79 #define ao_cur_stdio 0
80 #define ao_num_stdios 0
88 extern void ao_debug_out(char c);
96 (*ao_stdios[ao_cur_stdio].putchar)('\r');
97 (*ao_stdios[ao_cur_stdio].putchar)(c);
103 if (ao_stdios[ao_cur_stdio].flush)
104 ao_stdios[ao_cur_stdio].flush();
107 __xdata uint8_t ao_stdin_ready;
110 getchar(void) __reentrant
115 ao_arch_block_interrupts();
116 stdio = ao_cur_stdio;
118 c = ao_stdios[stdio]._pollchar();
119 if (c != AO_READ_AGAIN)
121 #if AO_NUM_STDIOS > 1
122 if (++stdio == ao_num_stdios)
124 if (stdio == ao_cur_stdio)
126 ao_sleep(&ao_stdin_ready);
128 #if AO_NUM_STDIOS > 1
129 ao_cur_stdio = stdio;
131 ao_arch_release_interrupts();
138 return ao_stdios[ao_cur_stdio].echo;
142 ao_add_stdio(int (*_pollchar)(void),
143 void (*putchar)(char),
144 void (*flush)(void)) __reentrant
146 if (ao_num_stdios == AO_NUM_STDIOS)
147 ao_panic(AO_PANIC_STDIO);
148 ao_stdios[ao_num_stdios]._pollchar = _pollchar;
149 ao_stdios[ao_num_stdios].putchar = putchar;
150 ao_stdios[ao_num_stdios].flush = flush;
151 ao_stdios[ao_num_stdios].echo = 1;
152 #if AO_NUM_STDIOS > 1
153 return ao_num_stdios++;