Question about notify characteristic and CCCD descriptors

[alireza sadeghpour]

Hi to all,

i am developing a device with NRF51822 SOC, i want implement a peripheral device and deploy in it a service with two characteristic with notify property, i know that the central device that is paired with my device must write 0x01 in CCCD descriptor to receive notification from my device but i have a question, CCCD is per client or per characteristic or in other means central device must write 0x01 in one CCCD descriptor to receive notifications from both notify characteristics or must write 0x01 in two CCCD descriptor to receive notification from both notify characteristic??

thanks

[CheMax]

In both.

For each characteristic, a different group of descriptors is created. Therefore, you need to allow notifications for each characteristic separately.