Mercurial > mbsePi-apps / file comparison
comparison: thermferm/devices.c
thermferm/devices.c
- changeset 220
- 382938c5fce2
- parent 215
- 5ad534c79a22
- child 235
- 885ad8d52126
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| 219:ae720212accc | 220:382938c5fce2 |
|---|---|
| 38 | 38 |
| 39 int dht11_pin = -1; | 39 int dht11_pin = -1; |
| 40 int dht11_temperature = -1; | 40 int dht11_temperature = -1; |
| 41 int dht11_humidity = -1; | 41 int dht11_humidity = -1; |
| 42 int dht11_valid = FALSE; | 42 int dht11_valid = FALSE; |
| 43 time_t dht11_last = (time_t)0; | |
| 43 | 44 |
| 44 | 45 |
| 45 static uint8_t sizecvt(const int read_value) { | 46 static uint8_t sizecvt(const int read_value) { |
| 46 /* | 47 /* |
| 47 * digitalRead() and friends from wiringpi are defined as returning a value | 48 * digitalRead() and friends from wiringpi are defined as returning a value |
| 403 { | 404 { |
| 404 devices_list *device; | 405 devices_list *device; |
| 405 char *addr = NULL, line[60], *p = NULL; | 406 char *addr = NULL, line[60], *p = NULL; |
| 406 FILE *fp; | 407 FILE *fp; |
| 407 int temp, rc; | 408 int temp, rc; |
| 409 time_t now; | |
| 408 | 410 |
| 409 syslog(LOG_NOTICE, "Thread my_devices_loop started"); | 411 syslog(LOG_NOTICE, "Thread my_devices_loop started"); |
| 410 | 412 |
| 411 /* | 413 /* |
| 412 * Loop forever until the external shutdown variable is set. | 414 * Loop forever until the external shutdown variable is set. |
| 467 } | 469 } |
| 468 break; | 470 break; |
| 469 | 471 |
| 470 #ifdef HAVE_WIRINGPI_H | 472 #ifdef HAVE_WIRINGPI_H |
| 471 case DEVTYPE_DHT: | 473 case DEVTYPE_DHT: |
| 472 if (device->subdevice == 0) { | 474 /* |
| 475 * Make sure we don't read the sensor withing 2 seconds. | |
| 476 */ | |
| 477 now = time(NULL); | |
| 478 if ((int)(now - dht11_last) > 2) { | |
| 473 dht11_pin = device->gpiopin; | 479 dht11_pin = device->gpiopin; |
| 474 dht11Read(); | 480 dht11Read(); |
| 481 dht11_last = now; | |
| 482 } | |
| 483 if (device->subdevice == 0) { | |
| 475 if (dht11_valid) { | 484 if (dht11_valid) { |
| 476 device->value = dht11_temperature * 1000; | 485 device->value = dht11_temperature * 1000; |
| 477 device->timestamp = time(NULL); | 486 device->timestamp = time(NULL); |
| 478 device->present = DEVPRESENT_YES; | 487 device->present = DEVPRESENT_YES; |
| 479 } else { | 488 } else { |
