| 62 | |
| 63 | |
| 64 | bool MCP23008::isConnected() |
| 65 | { |
| 66 | _wire->beginTransmission(_address); |
| 67 | if (_wire->endTransmission() != 0) |
| 68 | { |
| 69 | _error = MCP23008_I2C_ERROR; |
| 70 | return false; |
| 71 | } |
| 72 | _error = MCP23008_OK; |
| 73 | return true; |
| 74 | } |
| 75 | |
| 76 | |
| 77 | // single pin interface |