| 76 | |
| 77 | |
| 78 | int DHT12::_readSensor() |
| 79 | { |
| 80 | // GET CONNECTION |
| 81 | _wire->beginTransmission(DHT12_ADDRESS); |
| 82 | _wire->write(0); |
| 83 | int rv = _wire->endTransmission(); |
| 84 | if (rv < 0) return rv; |
| 85 | |
| 86 | // GET DATA |
| 87 | const uint8_t length = 5; |
| 88 | int bytes = _wire->requestFrom(DHT12_ADDRESS, length); |
| 89 | |
| 90 | if (bytes == 0) return DHT12_ERROR_CONNECT; |
| 91 | if (bytes < length) return DHT12_MISSING_BYTES; |
| 92 | |
| 93 | for (int i = 0; i < bytes; i++) |
| 94 | { |
| 95 | _bits[i] = _wire->read(); |
| 96 | } |
| 97 | |
| 98 | return bytes; |
| 99 | } |
| 100 | |
| 101 | |
| 102 | // -- END OF FILE -- |