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Cypress PSoC 6 Bluetooth Low Energy Middleware Library 3.60
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Cypress PSoC 6 Bluetooth Low Energy Middleware Library 3.60
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GATT database structure used in the GATT Server.
Data Fields | |
| uint16_t | attHandle |
| Index for querying BLE GATT database. | |
| uint16_t | attType |
| UUID: 16-bit UUID type for an attribute entry. More... | |
| uint32_t | permission |
| The permission bits are stored in a 32-bit field. More... | |
| uint16_t | attEndHandle |
| Attribute end handle, indicating logical boundary of given attribute. More... | |
| cy_stc_ble_gatts_att_value_t | attValue |
| Attribute value format, it can be one of following: uint16_t 16bit - UUID for 16-bit service and characteristic declaration cy_ble_gatts_att_generic_val_t attFormatValue - Buffer containing 32-bit or 128-bit UUID values for service & characteristic declaration cy_ble_gatts_att_generic_val_t attFormatValue - Buffer containing generic characteristic definition value or generic descriptor values. | |
| uint16_t cy_stc_ble_gatts_db_t::attType |
UUID: 16-bit UUID type for an attribute entry.
For 32-bit and 128-bit UUIDs, the last 16 bits should be stored in this entry. The GATT DB access layer shall retrieve complete 128-bit UUID from the cy_ble_gatts_att_generic_val_t structure.
| uint32_t cy_stc_ble_gatts_db_t::permission |
The permission bits are stored in a 32-bit field.
These 32-bits can be grouped in four bytes. The least significant byte is byte 0 (B0) and the most significant byte is byte 3 (B3). The bytes where the permissions have been grouped is as given below. Attribute permissions for read (B0) Attribute permissions for write (B1) Characteristic properties (B2) Implementation specific permission (B3) If permission is set to CY_BLE_GATT_DB_ATTR_CHAR_VAL_RD_EVENT, all GATT characteristic read requests will be indicated to the application using the CY_BLE_EVT_GATTS_READ_CHAR_VAL_ACCESS_REQ event.
| uint16_t cy_stc_ble_gatts_db_t::attEndHandle |
Attribute end handle, indicating logical boundary of given attribute.