NRF52 Bluefruit Arduino (Client) Notify transmissions not received from Pulse Oximeter

[EM]

I am trying to connect a BerryMed MD1000 Pulse Oximeter (BLE Server) with an Adafruit Bluefruit Feather (nRF52-enabled) Arduino board (BLE Client). 

I made an Arduino sketch that successfully connects a TI SensorTag with the Arduino board and Notifications are sent successfully. Therefore I know that my Bluefruit Feather is functional and my sketch correctly connects with a BLE Server, configures Notifications and receives them.

I modified the working sketch to use the PulseOx Service/Characteristics but it fails. The Service and Characteristic connections work and setting Notify also works, however no notification transmissions are received. 

I am able to connect the MD1000 with the nRF Connect Android app and verified that Notifications are sent and received. Therefore I know that the Pulse Oximeter BLE Server is working correctly and that it operates in a standard way. 

This is the sample sketch that I derived my sketch from: 

github.com/.../central_custom_hrm.ino

[Jørgen Holmefjord]

Hi,

If you do not get any notifications, this probably means that the notifications have not been enabled correctly. There is no way to know what is wrong without seeing the code you use on your board.

I would recommend that you contact Adafruit, or post in their forum about your issue, as this Arduino solution is not something that is developed by Nordic.

Best regards,
Jørgen