After upgrading the firmware of Redbear duo to v0.3.2, the BLE notification was received once from the client side and then stopped no matter i sent other strings from the Serial Monitor. No problem was found on firmware v0.2.4.
The SimpleChat.ino was uploaded to the redbear duo, the client side was Samsung Galaxy Tab S2 running “nRF Connect” to test and log the BLE communication as well. Please kindly refer to the attached screenshots.
Would you please suggest any solution for this issue? Thank you very much!