uniapp 低功耗蓝牙BLE分包

ble.js

  // 分包写入蓝牙
  async sendWriteBLECharacteristicValue(
    deviceId,
    serviceId,
    writeCharacteristicId,
    readCharacteristicId,
    buffer,
    success, // 成功回调
    failure, // 失败回调
  ) {
    const offset = 500; // 偏移量
    let pos = 0; // 位置
    let bytes = buffer.byteLength; // 总字节
    let that = this;
    while (bytes > 0) {
      let endPos = bytes > offset ? pos + offset : pos + bytes;
      const tempBuffer = buffer.slice(pos, endPos);
      pos += offset;
      bytes -= offset;
      // 延迟发送
      await that.sendDelay(150, tempBuffer).then((buffer) => {
        that.writeBLECharacteristicValue(
          deviceId,
          serviceId,
          writeCharacteristicId,
          buffer,
          (res) => {
            if (buffer.byteLength < offset) {
              success(res);
            }
          },
          (err) => {
            failure(err);
          }