Array of float in presentation format

[hathach]

hi,

I am using nRF51822 chip, I want to added a presentation format to declare a custom characteristic as an array of float (float [3]). According to developer.bluetooth.org/.../FormatTypes.aspx SIG support Array type, but BLE_GATT_CPF_FORMAT_XXXXX in ble_gatt.h does not have array value.

so what the value i should assign to the char_pf.format ?

char_pf.format = BLE_GATT_CPF_FORMAT_????;

[Carles]

Hi there,

That's because there is no actual number assigned to that array[] format:

developer.bluetooth.org/.../DescriptorViewer.aspx

I'm guessing the closest is "struct":

BLE_GATT_CPF_FORMAT_STRUCT

Carles

[Bastiaan]

thank for the quick reply, It is indeed ambiguous and not decided. In the bluetooth core spec table 3.16 only stop at 0x1b for structure.