Tool/software: TI-RTOS
HI !!!!!
I have implemented an indication based on the simple peripheral example, but it does not work.
I Changed the value of characteristic 4 in custom service from notify to indicate. However, I can not read the value from my smartphone application.
Also in the glucose_sensor example, indicate did not work correctly.
Is there any part I miss?
Is there an example that includes using indicate instead of notify?
Hello Jinbae,
I successfully modified simple peripheral to send indication from characteristic 4.
I had to pass the Entity ID (Task ID) selfEntity to GATTServApp_ProcessCharCfg in SimpleProfile_SetParameter to register my ICall application task to receive the GATT message ATT_HANDLE_VALUE_CFM which is sent in response from the master after an indication is sent from the slave. I simply added an parameter in SimpleProfile_SetParameter for taskId and passed the selfEntity variable from the application. This is not the cleanest solution, but works to verify functionality. you should also wait for the ATT_HANDLE_VALUE_CFM before you send the next indication and not send periodically as is done in the example.
Add parameter in Set_Parameter:
bStatus_t SimpleProfile_SetParameter( uint8 param, uint8 len, void *value, ICall_EntityID taskId)
In SimpleBLEPeripheral_performPeriodicTask:
SimpleProfile_SetParameter(SIMPLEPROFILE_CHAR4, sizeof(uint8_t), &valueToCopy, selfEntity);
In SimpleProfile_SetParameter:
GATTServApp_ProcessCharCfg( simpleProfileChar4Config, &simpleProfileChar4, FALSE, simpleProfileAttrTbl, GATT_NUM_ATTRS( simpleProfileAttrTbl ), taskId, simpleProfile_ReadAttrCB );
Add in SimpleBLEPeripheral_processGATTMsg:
....
else if (pMsg->method == ATT_HANDLE_VALUE_CFM)
{
Display_print1(dispHandle, 5, 0, "ATT_HANDLE_VALUE_CFM Received : %d", pMsg->method);
}
Test:
1. Connect with BTool (Master).
2. Write random value to char 3.
3. Enable indications on char4 CCCD (write 02:00).
4. The slave will periodically (SimpleBLEPeripheral_performPeriodicTask) copy the value from char 3 to char 4 and send an indication.
