altos: control TD GPIO pins directly with the 'o' command
[fw/altos] / src / ao_pins.c
1 /*
2  * Copyright © 2010 Keith Packard <keithp@keithp.com>
3  *
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.
7  *
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.
12  *
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.
16  */
17
18 #include "ao.h"
19 #include "ao_pins.h"
20
21 static void
22 ao_pins_enable(void)
23 {
24 #if defined(TELEDONGLE_V_0_2)
25         P0DIR = 0xff;
26         P1DIR = 0x3f;
27         P2DIR = 0x1f;
28 #elif defined(TELEDONGLE_V_0_1)
29         P0DIR = 0xff;
30         P1DIR = 0x3f;
31         P2DIR = 0x1f;
32 #else
33 #error "ao_pins not configured for this device"
34 #endif
35 }
36
37 static void
38 ao_pins_set(void)
39 {
40         uint8_t reg, val;
41
42         ao_pins_enable();
43         for (;;) {
44                 ao_cmd_white();
45                 if (ao_cmd_lex_c == '\n')
46                         break;
47                 ao_cmd_hex();
48                 reg = ao_cmd_lex_i;
49                 ao_cmd_hex();
50                 val = ao_cmd_lex_i;
51                 if (ao_cmd_status != ao_cmd_success)
52                         break;
53                 switch (reg) {
54                 case 0:
55                         P0 = val;
56                         break;
57                 case 1:
58                         P1 = val;
59                         break;
60                 case 2:
61                         P2 = val;
62                         break;
63                 }
64         }
65 }
66
67 __code struct ao_cmds ao_pins_cmds[] = {
68         { 'o',  ao_pins_set,    "o <0|1|2> <hex value> ...          Set GPIO output" },
69         { 0,    ao_pins_set,    0 },
70 };
71
72 void
73 ao_pins_init(void)
74 {
75         ao_cmd_register(&ao_pins_cmds[0]);
76 }