查詢 Bluetooth® Low Energy 特性是否可讀。
用法
bleCharacteristic.canRead()
參數
None
返回
- true,如果特征是可讀的,
- false否則
示例
if (characteristic.canRead("2901")) {
Serial.println("characteristic is readable");
}
讀
對特征執行讀取請求。
用法
bleCharacteristic.read()
參數
None
返回
- true,如果成功,
- false失敗時
示例
if (characteristic.read()) {
Serial.println("characteristic value read");
// ...
} else {
Serial.println("error reading characteristic value");
}
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