API unique to LNS designs configured as a GATT Client role.
A letter 'c' is appended to the API name: Cy_BLE_LNSC_
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cy_en_ble_api_result_t | Cy_BLE_LNSC_SetCharacteristicValue (cy_stc_ble_conn_handle_t connHandle, cy_en_ble_lns_char_index_t charIndex, uint8_t attrSize, uint8_t *attrValue) |
| This function is used to write the characteristic (which is identified by charIndex) value attribute in the server. More...
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cy_en_ble_api_result_t | Cy_BLE_LNSC_GetCharacteristicValue (cy_stc_ble_conn_handle_t connHandle, cy_en_ble_lns_char_index_t charIndex) |
| This function is used to read the characteristic Value from a server, as identified by its charIndex. More...
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cy_en_ble_api_result_t | Cy_BLE_LNSC_SetCharacteristicDescriptor (cy_stc_ble_conn_handle_t connHandle, cy_en_ble_lns_char_index_t charIndex, cy_en_ble_lns_descr_index_t descrIndex, uint8_t attrSize, uint8_t *attrValue) |
| This function is used to write the characteristic Value to the server, as identified by its charIndex. More...
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cy_en_ble_api_result_t | Cy_BLE_LNSC_GetCharacteristicDescriptor (cy_stc_ble_conn_handle_t connHandle, cy_en_ble_lns_char_index_t charIndex, cy_en_ble_lns_descr_index_t descrIndex) |
| Gets the characteristic descriptor of the specified characteristic. More...
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◆ Cy_BLE_LNSC_SetCharacteristicValue()
This function is used to write the characteristic (which is identified by charIndex) value attribute in the server.
As a result a Write Request is sent to the GATT Server and on successful execution of the request on the server side, the CY_BLE_EVT_LNSS_WRITE_CHAR event is generated. On successful request execution on the server side, the Write Response is sent to the client.
- Parameters
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connHandle | The connection handle. |
charIndex | The index of the service characteristic. |
attrSize | The size of the characteristic value attribute. |
attrValue | The pointer to the characteristic value data that should be sent to the server device. |
- Returns
- A return value of type cy_en_ble_api_result_t.
Error Codes | Description |
CY_BLE_SUCCESS | The request was handled successfully. |
CY_BLE_ERROR_INVALID_PARAMETER | Validation of the input parameter failed. |
CY_BLE_ERROR_INVALID_OPERATION | Operation is invalid for this characteristic. |
CY_BLE_ERROR_GATT_DB_INVALID_ATTR_HANDLE | The peer device doesn't have the particular characteristic. |
CY_BLE_ERROR_INVALID_STATE | Connection with the client is not established. |
CY_BLE_ERROR_MEMORY_ALLOCATION_FAILED | Memory allocation failed. |
- Events
- In case of successful execution (return value = CY_BLE_SUCCESS) the following events can appear:
If the LNS service-specific callback is registered (with Cy_BLE_LNS_RegisterAttrCallback):
Otherwise (if the LNS service-specific callback is not registered):
◆ Cy_BLE_LNSC_GetCharacteristicValue()
This function is used to read the characteristic Value from a server, as identified by its charIndex.
The Read Response returns the characteristic Value in the Attribute Value parameter.
The Read Response only contains the characteristic Value that is less than or equal to (MTU - 1) octets in length. If the characteristic Value is greater than (MTU - 1) octets in length, the Read Long Characteristic Value procedure may be used if the rest of the characteristic Value is required.
- Parameters
-
connHandle | The connection handle. |
charIndex | The index of the service characteristic. |
- Returns
- A return value of type cy_en_ble_api_result_t.
Error Codes | Description |
CY_BLE_SUCCESS | The request was handled successfully. |
CY_BLE_ERROR_INVALID_PARAMETER | Validation of the input parameter failed. |
CY_BLE_ERROR_INVALID_OPERATION | Operation is invalid for this characteristic. |
CY_BLE_ERROR_GATT_DB_INVALID_ATTR_HANDLE | The peer device doesn't have the particular characteristic. |
CY_BLE_ERROR_INVALID_STATE | Connection with the client is not established. |
CY_BLE_ERROR_MEMORY_ALLOCATION_FAILED | Memory allocation failed. |
- Events
- In case of successful execution (return value = CY_BLE_SUCCESS) the following events can appear:
If the LNS service-specific callback is registered (with Cy_BLE_LNS_RegisterAttrCallback):
Otherwise (if the LNS service-specific callback is not registered):
◆ Cy_BLE_LNSC_SetCharacteristicDescriptor()
This function is used to write the characteristic Value to the server, as identified by its charIndex.
Internally, Write Request is sent to the GATT Server and on successful execution of the request on the server side, the following events can be generated:
- Parameters
-
connHandle | The connection handle. |
charIndex | The index of the service characteristic. |
descrIndex | The index of the service characteristic descriptor. |
attrSize | The size of the characteristic descriptor value attribute. |
attrValue | The pointer to the characteristic descriptor value data that should be sent to the server device. |
- Returns
- A return value of type cy_en_ble_api_result_t.
Error Codes | Description |
CY_BLE_SUCCESS | The request was handled successfully. |
CY_BLE_ERROR_INVALID_PARAMETER | Validation of the input parameter failed. |
CY_BLE_ERROR_INVALID_OPERATION | This operation is not permitted on the specified attribute. |
CY_BLE_ERROR_GATT_DB_INVALID_ATTR_HANDLE | The peer device doesn't have the particular characteristic. |
CY_BLE_ERROR_INVALID_STATE | The state is not valid. |
CY_BLE_ERROR_MEMORY_ALLOCATION_FAILED | Memory allocation failed. |
- Events
- In case of successful execution (return value = CY_BLE_SUCCESS) the following events can appear:
If the LNS service-specific callback is registered (with Cy_BLE_LNS_RegisterAttrCallback):
Otherwise (if the LNS service-specific callback is not registered):
◆ Cy_BLE_LNSC_GetCharacteristicDescriptor()
Gets the characteristic descriptor of the specified characteristic.
- Parameters
-
connHandle | The connection handle. |
charIndex | The index of the service characteristic. |
descrIndex | The index of the service characteristic descriptor. |
- Returns
- A return value of type cy_en_ble_api_result_t.
Error Codes | Description |
CY_BLE_SUCCESS | The request was handled successfully. |
CY_BLE_ERROR_INVALID_PARAMETER | Validation of the input parameter failed. |
CY_BLE_ERROR_INVALID_OPERATION | This operation is not permitted on the specified attribute. |
CY_BLE_ERROR_GATT_DB_INVALID_ATTR_HANDLE | The peer device doesn't have the particular descriptor. |
CY_BLE_ERROR_INVALID_STATE | The state is not valid. |
CY_BLE_ERROR_MEMORY_ALLOCATION_FAILED | Memory allocation failed. |
- Events
- In case of successful execution (return value = CY_BLE_SUCCESS) the following events can appear:
If the LNS service-specific callback is registered (with Cy_BLE_LNS_RegisterAttrCallback):
Otherwise (if the LNS service-specific callback is not registered):