INITIAL VERSION - needs optimization
| 64 | |
| 65 | // INITIAL VERSION - needs optimization |
| 66 | bool SGP30::getID() |
| 67 | { |
| 68 | _command(0x3682); |
| 69 | delay(1); |
| 70 | if (_wire->requestFrom(_address, (uint8_t)9) == 9) |
| 71 | { |
| 72 | for (uint8_t i = 0, j = 0; i < 3; i++) |
| 73 | { |
| 74 | _id[j++] = _wire->read(); |
| 75 | _id[j++] = _wire->read(); |
| 76 | uint8_t crc = _wire->read(); |
| 77 | uint16_t val = _id[j-2] * 256 + _id[j-1]; |
| 78 | if (_CRC8(val) != crc) |
| 79 | { |
| 80 | _error = SGP30_ERROR_CRC; |
| 81 | return false; |
| 82 | } |
| 83 | } |
| 84 | _error = SGP30_OK; |
| 85 | return true; |
| 86 | } |
| 87 | _error = SGP30_ERROR_I2C; |
| 88 | return false; |
| 89 | } |
| 90 | |
| 91 | |
| 92 | // expect to return 0x0022 |