RTOS/CC2650: reconnect BLE CC2650 after disconnect by LINK LOSS service

Luong The Phong

Part Number: CC2650

Tool/software: TI-RTOS

How to reconnect BLE cc2650 with app after disconnect by LINK LOSS use GAPRole_TerminateConnection(); I used uint8_t advertEnabled =TRUE; GAPRole_SetParameter(GAPROLE_ADVERT_ENABLED, sizeof(uint8_t), &advertEnabled); but still not reconnect and advertising to app.

After I disconnect GAPRole_TerminateConnection();, cc2650 no longer advertise. How to advertise continously and reconnect smartphone to cc2650?

over 5 years ago

0 Jessica H. over 5 years ago

TI__Genius 11535 points

Hi Luong,

Where in your code are you calling GAPRole_TerminateConnection() in your code? According to this thread, this function will not work if it is called in a callback/handler or non-ICALL aware task.

0 Luong The Phong over 5 years ago in reply to Jessica H.

Intellectual 610 points

Hi Jessica,

I call GAPRole_TerminateConnection() after check 1 data value into 1 Service ID link loss if data value = 0x00 then cc2650 disconnect with smartphone by function GAPRole_TerminateConnection() . But then I cannot reconnect smartphone with cc2650. Can you tell me how to reconnect?

0 Jessica H. over 5 years ago in reply to Luong The Phong

TI__Genius 11535 points

Hi Luong,

Where in your code do you call this? Are you using the CC2650 as a peripheral device? If so, then the smartphone will need to initiate a connection. Calling GAPRole_TerminateConnection() should not effect your advertising so as long as your device is already advertising, it should be able to reconnect with the smartphone.

0 Jessica H. over 5 years ago in reply to Jessica H.

TI__Genius 11535 points

Hi Luong,

Were you able to resolve your issue?

0 Jessica H. over 5 years ago in reply to Jessica H.

TI__Genius 11535 points

Hi Luong,

I haven’t heard from you for over a weel, so I’m assuming you were able to resolve your issue. If this isn’t the case, please click the "This did NOT resolve my issue" button and reply to this thread with more information. If this thread locks, please click the "Ask a related question" button and in the new thread describe the current status of your issue and any additional details you may have to assist us in helping to solve your issues.

0 Luong The Phong over 5 years ago in reply to Jessica H.

Intellectual 610 points

Hi Jessica,
I recently not access to forum TI because I have some other work. Sorry you for this inconvience. I call GAPRole_TerminateConnection() after I write 1 value data and check if value data = 0x02, function GAPRole_TerminateConnection() will be conducted in link loss service.

0 Jessica H. over 5 years ago in reply to Luong The Phong

TI__Genius 11535 points

Hi Luong,

There was no inconvenience, I want to ensure you get the best support. What function do you handle these in? Do you call GAPRole_TerminateConnection in a BLE task?

0 Luong The Phong over 5 years ago in reply to Jessica H.

Intellectual 610 points

Hi Jessica,

I don't call GAPRole_TerminateConnection in BLE stask. Can you show me how to call GAPRole_TerminateConnection in BLE stask?

I call GAPRole_TerminateConnection in below function:

static bStatus_t Link_Loss_immedAlert_WriteAttrCB(uint16_t connHandle, gattAttribute_t *pAttr,
uint8_t *pValue, uint16_t len, uint16_t offset,
uint8 method)
{
bStatus_t status = SUCCESS;
uint8_t paramID = 0xFF;

// See if request is regarding a Client Characterisic Configuration
if ( ! memcmp(pAttr->type.uuid, clientCharCfgUUID, pAttr->type.len) )
{
// Allow only notifications.
status = GATTServApp_ProcessCCCWriteReq( connHandle, pAttr, pValue, len,
offset, GATT_CLIENT_CFG_NOTIFY);
}
// See if request is regarding the AlertLevel Characteristic Value
else if ( ! memcmp(pAttr->type.uuid, Link_lossCommandUUID, pAttr->type.len) )
{
if ( offset + len > LINK_LOSSLEVEL_LEN )
{
status = ATT_ERR_INVALID_OFFSET;
}
else
{
// Copy pValue into the variable we point to from the attribute table.
memcpy(pAttr->pValue + offset, pValue, len);

// Only notify application if entire expected value is written
if ( offset + len == LINK_LOSSLEVEL_LEN)
paramID = LINK_LOSSLEVEL;
uint8 *pCurValue = (uint8 *)pAttr->pValue;
disconnect = *pCurValue;

if(disconnect == 0x03)
{
GAPRole_TerminateConnection();
}
}
}
else
{
// If we get here, that means you've forgotten to add an if clause for a
// characteristic value attribute in the attribute table that has WRITE permissions.
status = ATT_ERR_ATTR_NOT_FOUND;
}

// Let the application know something changed (if it did) by using the
// callback it registered earlier (if it did).
if (paramID != 0xFF)
if ( pAppCBs && pAppCBs->pfnChangeCb )
pAppCBs->pfnChangeCb( paramID ); // Call app function from stack task context.

return status;
}

Thank for your support.

0 Jessica H. over 5 years ago in reply to Luong The Phong

TI__Genius 11535 points

Hi Luong,

Your issue is most likely due to calling GAPRole_TerminateConnection in a callback function. According to our CC2650 Software User's Guide, the API is not guaranteed to work when calling from a non-ICall aware task - or - a callback/"handler" function. To fix this you can try creating an event in the main application task function or one of the other ICall-aware event processing tasks given by TI.

0 Luong The Phong over 5 years ago in reply to Jessica H.

Intellectual 610 points

I will try your way. tks you.

0 Jessica H. over 5 years ago in reply to Luong The Phong

TI__Genius 11535 points

Hi Luong,

Were you able to get this to work?

0 Jessica H. over 5 years ago in reply to Jessica H.

TI__Genius 11535 points

Hi Luong,

I haven’t heard from you for over a week, so I’m assuming you were able to resolve your issue. If this isn’t the case, please click the "This did NOT resolve my issue" button and reply to this thread with more information. If this thread locks, please click the "Ask a related question" button and in the new thread describe the current status of your issue and any additional details you may have to assist us in helping to solve your issues.