Annotation of embedtools/src/butz.c, revision 1.1.2.3
1.1.2.1 misho 1: #include "global.h"
2:
3:
4: cfg_root_t cfg;
5: sched_root_task_t *root;
1.1.2.3 ! misho 6: int Kill, gpio, maxpins, defact, resbut, led = -1;
1.1.2.1 misho 7: extern char compiled[], compiledby[], compilehost[];
8: char szCfgName[PATH_MAX] = BUTZ_CFG;
1.1.2.2 misho 9: char szDevName[PATH_MAX] = _PATH_DEVGPIOC"0";
1.1.2.1 misho 10:
11: static void
12: Usage()
13: {
14: printf( " -= Butz =- Service for board buttons management\n"
15: "=== %s === %s@%s ===\n\n"
16: " Syntax: butz [options] [set_value]\n"
17: "\n"
18: "\t-c <cfgfile>\tConfig file [default: /etc/butz.conf]\n"
1.1.2.2 misho 19: "\t-d <devname>\tGPIO control device [default: /dev/gpioc]\n"
1.1.2.1 misho 20: "\n", compiled, compiledby, compilehost);
21: }
22:
1.1.2.3 ! misho 23: static int
! 24: prepareGPIO()
! 25: {
! 26: const char *str;
! 27: struct gpio_pin pin;
! 28: struct gpio_req req;
! 29:
! 30: str = cfg_getAttribute(&cfg, "reset", "default_after");
! 31: if (str)
! 32: defact = strtol(str, NULL, 0);
! 33: str = cfg_getAttribute(&cfg, "reset", "gpio_led_ping");
! 34: if (str)
! 35: led = strtol(str, NULL, 0);
! 36: str = cfg_getAttribute(&cfg, "reset", "gpio_pin");
! 37: if (!str || maxpins < (resbut = strtol(str, NULL, 0))) {
! 38: EERROR(EINVAL, "Reset button pin not defined or wrong number!");
! 39: return -1;
! 40: }
! 41:
! 42: /* switch button pin into input state */
! 43: pin.gp_pin = resbut;
! 44: pin.gp_flags = GPIO_PIN_INPUT;
! 45: if (ioctl(gpio, GPIOSETCONFIG, &pin) == -1)
! 46: return -1;
! 47: /* toggle led pin */
! 48: if (led != -1) {
! 49: req.gp_pin = led;
! 50: if (ioctl(gpio, GPIOTOGGLE, &req) == -1) {
! 51: ESYSERR(0);
! 52: return -1;
! 53: }
! 54: }
! 55:
! 56: return 0;
! 57: }
! 58:
1.1.2.1 misho 59: static void *
60: sigHandler(sched_task_t *task)
61: {
62: switch (TASK_VAL(task)) {
63: case SIGHUP:
64: cfgUnloadConfig(&cfg);
65: if (cfgLoadConfig(szCfgName, &cfg)) {
66: ELIBERR(cfg);
67: Kill++;
68: }
1.1.2.3 ! misho 69: if (prepareGPIO())
! 70: Kill++;
1.1.2.1 misho 71: break;
72: case SIGTERM:
73: Kill++;
74: break;
75: default:
76: EERROR(EINVAL, "Undefined signal %lu!", TASK_VAL(task));
77: break;
78: }
79: taskExit(task, NULL);
80: }
81:
1.1.2.2 misho 82: static void *
1.1.2.3 ! misho 83: execReset(sched_task_t *task)
! 84: {
! 85: pid_t pid;
! 86: const char *str;
! 87:
! 88: str = cfg_getAttribute(&cfg, "reset", "click");
! 89: if (!str)
! 90: taskExit(task, NULL);
! 91:
! 92: if ((pid = fork()) == -1)
! 93: ESYSERR(0);
! 94: else if (!pid) {
! 95: execl(str, str, "click", NULL);
! 96: ESYSERR(0);
! 97: _exit(127);
! 98: }
! 99:
! 100: taskExit(task, NULL);
! 101: }
! 102:
! 103: static void *
! 104: execDefault(sched_task_t *task)
! 105: {
! 106: pid_t pid;
! 107: const char *str;
! 108:
! 109: str = cfg_getAttribute(&cfg, "reset", "default");
! 110: if (!str)
! 111: taskExit(task, NULL);
! 112:
! 113: if ((pid = fork()) == -1)
! 114: ESYSERR(0);
! 115: else if (!pid) {
! 116: execl(str, str, "default", NULL);
! 117: ESYSERR(0);
! 118: _exit(127);
! 119: }
! 120:
! 121: taskExit(task, NULL);
! 122: }
! 123:
! 124: static void *
1.1.2.2 misho 125: butReset(sched_task_t *task)
126: {
127: struct timespec ts = { 1, 0 };
128: struct gpio_req req;
1.1.2.3 ! misho 129: static int flg = 0;
1.1.2.2 misho 130:
1.1.2.3 ! misho 131: /* toggle led pin */
! 132: if (led != -1) {
! 133: req.gp_pin = led;
! 134: if (ioctl(gpio, GPIOTOGGLE, &req) == -1)
! 135: ESYSERR(0);
! 136: }
! 137: /* check reset button */
! 138: req.gp_pin = resbut;
! 139: if (ioctl(gpio, GPIOGET, &req) == -1) {
! 140: ESYSERR(0);
1.1.2.2 misho 141: goto end;
142: }
1.1.2.3 ! misho 143: /* switch on */
! 144: if (!req.gp_value)
! 145: if (++flg == 1)
! 146: schedSuspend(TASK_ROOT(task), execReset, NULL, flg, NULL, 0);
! 147: if (defact && flg >= defact) {
! 148: schedCancelby(TASK_ROOT(task), taskSUSPEND, CRITERIA_CALL, execReset, NULL);
! 149: schedEvent(TASK_ROOT(task), execDefault, NULL, flg, NULL, 0);
1.1.2.2 misho 150: goto end;
151: }
1.1.2.3 ! misho 152: if (flg && req.gp_value)
! 153: schedResumeby(TASK_ROOT(task), CRITERIA_ID, (void*) 1);
1.1.2.2 misho 154: end:
155: schedTimer(TASK_ROOT(task), TASK_FUNC(task), TASK_ARG(task),
156: ts, TASK_DATA(task), TASK_DATLEN(task));
157: taskExit(task, NULL);
158: }
159:
1.1.2.1 misho 160:
161: int
162: main(int argc, char **argv)
163: {
164: char ch;
1.1.2.2 misho 165: int gpio;
166: struct timespec ts = { 1, 0 };
1.1.2.1 misho 167:
1.1.2.3 ! misho 168: while ((ch = getopt(argc, argv, "hc:d:")) != -1)
1.1.2.1 misho 169: switch (ch) {
1.1.2.2 misho 170: case 'd':
171: strlcpy(szDevName, optarg, sizeof szDevName);
172: break;
1.1.2.1 misho 173: case 'c':
174: strlcpy(szCfgName, optarg, sizeof szCfgName);
175: break;
176: case 'h':
177: default:
178: Usage();
179: return 1;
180: }
181: argc -= optind;
182: argv += optind;
183:
184: openlog("butz", LOG_PID | LOG_CONS, LOG_DAEMON);
1.1.2.2 misho 185: gpio = open(szDevName, O_RDONLY);
186: if (gpio == -1) {
187: printf("Error:: Can't open /dev/gpioc #%d - %s\n",
188: errno, strerror(errno));
189: return 1;
190: }
191: if (ioctl(gpio, GPIOMAXPIN, &maxpins) == -1) {
192: printf("Error:: Can't get max gpio pins #%d - %s\n",
193: errno, strerror(errno));
194: return 1;
195: }
196:
1.1.2.1 misho 197: if (cfgLoadConfig(szCfgName, &cfg)) {
198: ELIBERR(cfg);
1.1.2.2 misho 199: close(gpio);
1.1.2.1 misho 200: return 1;
201: }
1.1.2.3 ! misho 202: if (prepareGPIO()) {
! 203: close(gpio);
! 204: return 1;
! 205: }
1.1.2.1 misho 206: root = schedBegin();
207: if (!root) {
208: ELIBERR(sched);
1.1.2.2 misho 209: close(gpio);
1.1.2.1 misho 210: return 1;
211: }
212:
213: schedSignal(root, sigHandler, NULL, SIGHUP, NULL, 0);
214: schedSignal(root, sigHandler, NULL, SIGTERM, NULL, 0);
1.1.2.2 misho 215: schedTimer(root, butReset, (void*) gpio, ts, NULL, 0);
1.1.2.1 misho 216:
1.1.2.2 misho 217: schedRun(root, &Kill);
1.1.2.1 misho 218: schedEnd(&root);
219: cfgUnloadConfig(&cfg);
1.1.2.2 misho 220: close(gpio);
1.1.2.1 misho 221: closelog();
222: return 0;
223: }
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