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UM1865

Vendor specific commands

132

4.6.5

Evt_Blue_Gatt_Write_Permit_req

This event is given to the application when a write request, write command or signed write

command is received by the server from the client. This event will be given to the application

only if the event bit for this event generation is set when the characteristic was added.

When this event is received, the application has to check whether the value being requested

for write can be allowed to be written and respond with the command Aci_Gatt_Write_Resp.

The details of the parameters of the command can be found. Based on the response from

the application, the attribute value will be modified by the stack. If the write is rejected by the

application, then the value of the attribute will not be modified. In case of a write REQ, an

error response will be sent to the client, with the error code as specified by the application.

In case of write/signed write commands, no response is sent to the client but the attribute is

not modified.

4.6.6

Evt_Blue_Gatt_Read_Permit_Req

This event is given to the application when a read request or read blob request is received

by the server from the client. This event will be given to the application only if the event bit

for this event generation is set when the characteristic was added.

On receiving this event, the application can update the value of the handle if it desires and

when done, it has to send the Aci_Gatt_Allow_Read command to indicate to the stack that it

can send the response to the client.

Table 260. Evt_Blue_Gatt_Disc_Read_Charac_By_UUID_Resp

Parameter

Size

Description

Event_code

2 bytes

The event code of the vendor specific

event

Connection_Handle

2 bytes

Connection handle where the procedure

started.

Data_len

1 byte

Length of following data

Attribute_Handle

2 bytes

Handle of the discovered attribute

Attribute_Value

(Data_len - 2) bytes

Attribute value

Table 261. Evt_Blue_Gatt_Write_Permit_req

Parameter

Size

Description

Event code

2 bytes

The event code of the vendor specific event

Connection handle

2 bytes

Handle of the connection on which there was the request to write

the attribute

Attribute handle

2 bytes

The handle of the attribute for which the write request has been

made by the client

data_len

1 byte

The length of the data to follow

data buffer

0-N bytes

The data that the client has requested to write

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