D3. Simplify the IO Pin Service, possible to expose the edge connector pins only. Possibly drop it to save memory and use the event service to transport pin values in either direction. Needs further thought.
D1. Lose the System LED State characteristic since it cannot be controlled from the BLE MCU.DONE.
D2. Lose the Scrolling State characteristic – complexity and memory constraints. DONE.
D4. Generic Access Service: Peripheral Privacy Flag is optional and I don’t think we need it. Ditto Reconnection Address, ditto Peripheral Preferred Connection Parameters --> Removed optional characteristics Peripheral Privacy Flag, Reconnection Address and Peripheral Preferred Connection Parameters from Generic Access Service.
D6. Device Information Service: All characteristics are optional. Which ones do we really want/need? Save a little memory --> Removed PnP ID, IEEE 11073-20601 Regulatory Certification Data List, System ID and Software Revision String characteristics.
D7. Why does LED Matrix State support “Write Without Response”? I think this should be plain “Write” so that no further writes are made until there’s been an ACK back from the previous one. Changed.
D8. MicroBit Requirements supports Write. This is (ironically and puntastically) wrong. Client should not be able to modify the requirements the MicroBit has. Changed.