1: /*************************************************************************
2: * (C) 2011 AITNET - Sofia/Bulgaria - <office@aitbg.com>
3: * by Michael Pounov <misho@aitbg.com>
4: *
5: * $Author: misho $
6: * $Id: pceng_run.c,v 1.2 2012/07/22 22:46:47 misho Exp $
7: *
8: *************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
46: #include "global.h"
47: #include "pceng.h"
48:
49:
50: const u_int led_base[2][MAX_GPIO_PINS] = {{0xf410, 0xf400, 0xf400, 0xf400},
51: {0x61b0, 0x6100, 0x6180, 0x6180}};
52: const int led_bit[2][MAX_GPIO_PINS] = {{8, 2, 3, 18}, {8, 6, 9, 11}};
53: const int gpio_off[2] = { 0x4, 0x10 };
54:
55:
56: static inline board_t
57: getBoard()
58: {
59: board_t type;
60: ait_val_t v;
61:
62: FTRACE(3);
63:
64: cfg_loadAttribute(&cfg, "pceng", "board", &v, DEFAULT_BOARD);
65: if (!strcasecmp(AIT_GET_STR(&v), "alix"))
66: type = alix;
67: else if (!strcasecmp(AIT_GET_STR(&v), "wrap"))
68: type = wrap;
69: else {
70: type = unknown;
71: syslog(LOG_ERR, "Error:: unknown board type %s", AIT_GET_STR(&v));
72: }
73:
74: AIT_FREE_VAL(&v);
75: return type;
76: }
77:
78: static u_int
79: gpioRead(u_char ledno)
80: {
81: u_int n;
82: board_t type = getBoard();
83:
84: FTRACE(3);
85:
86: switch (type) {
87: case wrap:
88: n = inl(led_base[type - 1][ledno] + gpio_off[type - 1]);
89: if (n & (1 << led_bit[type - 1][ledno]))
90: n = 1;
91: else
92: n = 0;
93: break;
94: case alix:
95: n = inl(led_base[type - 1][ledno]);
96: if (n & (1 << led_bit[type - 1][ledno]))
97: n = 0;
98: else
99: n = 1;
100: break;
101: default:
102: return -1;
103: }
104:
105: return n;
106: }
107:
108:
109: int
110: LED(u_char ledno, u_char state)
111: {
112: u_int n;
113: board_t type = getBoard();
114:
115: FTRACE(3);
116:
117: switch (type) {
118: case wrap:
119: n = inl(led_base[type - 1][ledno]);
120: /* read */
121: if (state == (u_char) -1)
122: return (n &= (1 << led_bit[type - 1][ledno]));
123:
124: if (state)
125: n |= (1 << led_bit[type - 1][ledno]);
126: else
127: n &= ~(1 << led_bit[type - 1][ledno]);
128: break;
129: case alix:
130: /* read */
131: if (state == (u_char) -1) {
132: n = inl(led_base[type - 1][ledno]);
133: return !(n &= (1 << led_bit[type - 1][ledno]));
134: }
135:
136: if (state)
137: n = (1 << (led_bit[type - 1][ledno] + gpio_off[type - 1]));
138: else
139: n = (1 << led_bit[type - 1][ledno]);
140: break;
141: default: /* unknown */
142: return -1;
143: }
144:
145: outl(led_base[type - 1][ledno], n);
146: return (int) state;
147: }
148:
149: static int
150: RunCmd(u_char pin, u_int state)
151: {
152: char szArg[STRSIZ] = { 0 };
153: ait_val_t v;
154:
155: FTRACE(3);
156:
157: switch (pin) {
158: case 0: /* button */
159: cfg_loadAttribute(&cfg, "event", "button_exec", &v, NULL);
160: break;
161: case 1: /* LEDs */
162: case 2:
163: case 3:
164: cfg_loadAttribute(&cfg, "event", "led_exec", &v, NULL);
165: break;
166: }
167: if (AIT_ISEMPTY(&v))
168: return 0;
169: if (pin)
170: snprintf(szArg, sizeof szArg, "%d=%d", pin, state);
171: else
172: snprintf(szArg, sizeof szArg, "%d", state);
173:
174: switch (fork()) {
175: case -1:
176: syslog(LOG_ERR, "Error:: RunCmd #%d - %s\n", errno, strerror(errno));
177: AIT_FREE_VAL(&v);
178: return -1;
179: case 0: /* execute command */
180: return execl(AIT_GET_STR(&v), AIT_GET_STR(&v), szArg, NULL);
181: }
182:
183: AIT_FREE_VAL(&v);
184: return 0;
185: }
186:
187: int
188: Run()
189: {
190: register u_char i;
191: u_int ret, t, slice, states = 0;
192: ait_val_t v;
193:
194: FTRACE(3);
195:
196: /* init array */
197: for (i = 0; i < MAX_GPIO_PINS; i++)
198: if ((ret = gpioRead(i)) == -1)
199: return 126;
200: else
201: states |= ret ? (1 << i) : 0;
202:
203: /* state machine */
204: while (!Kill) {
205: cfg_loadAttribute(&cfg, "event", "button_slice", &v, DEFAULT_SLICE);
206: slice = strtol(AIT_GET_STR(&v), NULL, 0);
207: AIT_FREE_VAL(&v);
208: if (!slice)
209: slice = strtol(DEFAULT_SLICE, NULL, 0);
210: slice *= 1000;
211:
212: for (i = t = 0; i < MAX_GPIO_PINS; t = 0, i++) {
213: if ((ret = gpioRead(i)) == -1)
214: return 127;
215:
216: if (ret != ((states >> i) & 0x1)) {
217: if (!i) { /* button */
218: t = 0;
219: do {
220: t++;
221: usleep(slice);
222: if (gpioRead(i) != ret)
223: break;
224: } while (!Kill);
225: } else { /* leds */
226: t = ret;
227: if (ret)
228: states |= (1 << i);
229: else
230: states &= ~(1 << i);
231: }
232:
233: RunCmd(i, t);
234: }
235: }
236:
237: usleep(slice);
238: }
239:
240: return 0;
241: }
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