Is there a trick to set the MTU size?

[mikedorin]

Sometimes it works, and sometimes I get a timeout/error.
Is there a trick to setting it?
Is there a maximum value?
Thank you,
Mike

[hcyAndroid]

private suspend fun initBleMTU(bleDevice: BleDevice): Boolean {
    val MAX_MTU = 180
    return withContext(Dispatchers.IO) {
        suspendCoroutine { continuation ->
            BleManager.getInstance()
                .setMtu(bleDevice, MAX_MTU, object : BleMtuChangedCallback() {
                    override fun onSetMTUFailure(exception: BleException) {
                        // 设置 MTU 失败
                        Logger.e("$TAG 设置MTU失败==${exception.description}")
                        if (isActive) {
                            continuation.resume(false) // 返回 false 表示初始化失败
                        }

                    }

                    override fun onMtuChanged(mtu: Int) {
                        // 设置 MTU 成功
                        Logger.d("$TAG 设置MTU成功==${mtu}")
                        if (isActive) {
                            continuation.resume(true) // 返回 true 表示初始化成功
                        }
                    }
                })
        }
    }

},

mtu between 23 and 512