CC2340R5: how can read RSSI value

Hi,

Thank you for reaching out.

• On the peripheral side - in app_peripheral.c - Add the following code

Add an event handler:

BLEAppUtil_EventHandler_t peripheralConnNotiHandler =
{
    .handlerType    = BLEAPPUTIL_CONN_NOTI_TYPE,
    .pEventHandler  = Peripheral_GAPConnReportHandler,
    .eventMask      = BLEAPPUTIL_CONN_NOTI_CONN_EVENT_ALL,
};

Create the handling function for the newly created event:

void Peripheral_GAPConnReportHandler(uint32 event, BLEAppUtil_msgHdr_t *pMsgData)
{
    switch(event)
    {

        case BLEAPPUTIL_CONN_NOTI_CONN_EVENT_ALL:
        {
            Gap_ConnEventRpt_t *report = (Gap_ConnEventRpt_t *)pMsgData;
            int8_t rssi = report->lastRssi;
            //Your code
            break;
        }

        default:
        {
            break;
        }
    }
}

Under BLEAPPUTIL_LINK_ESTABLISHED_EVENT, ensure you register the connection for the event:

        case BLEAPPUTIL_LINK_ESTABLISHED_EVENT:
        {
            gapEstLinkReqEvent_t *gapEstMsg = (gapEstLinkReqEvent_t *)pMsgData;
            BLEAppUtil_registerConnNotifHandler(gapEstMsg->connectionHandle);
            
            //...

In Peripheral_start(), register the event handler:

bStatus_t Peripheral_start()
{
    bStatus_t status = SUCCESS;

    //...

    status = BLEAppUtil_registerEventHandler(&peripheralConnNotiHandler);
    if(status != SUCCESS)
    {
        // Return status value
        return(status);
    }

    //...

• On the central side - in app_central.c - Add the following code

Add an event handler

BLEAppUtil_EventHandler_t centralConnNotiHandler =
{
    .handlerType    = BLEAPPUTIL_CONN_NOTI_TYPE,
    .pEventHandler  = Central_GAPConnReportHandler,
    .eventMask      = BLEAPPUTIL_CONN_NOTI_CONN_EVENT_ALL,
};

Create the handling function of the newly created event:

void Central_GAPConnReportHandler(uint32 event, BLEAppUtil_msgHdr_t *pMsgData)
{
    switch(event)
    {

        case BLEAPPUTIL_CONN_NOTI_CONN_EVENT_ALL:
        {
            volatile Gap_ConnEventRpt_t *report = (Gap_ConnEventRpt_t *)pMsgData;
            int8_t rssi = report->lastRssi;
            //Your code
            break;
        }

        default:
        {
            break;
        }
    }
}

In Central_start(), register the event handler:

bStatus_t Central_start()
{
    bStatus_t status = SUCCESS;

    //...

    status = BLEAppUtil_registerEventHandler(&centralConnNotiHandler);
    if(status != SUCCESS)
    {
        // Return status value
        return(status);
    }

    //...

In app_connection.c, register the newly formed connection:

void Connection_ConnEventHandler(uint32 event, BLEAppUtil_msgHdr_t *pMsgData)
{
    switch(event)
    {
        case BLEAPPUTIL_LINK_ESTABLISHED_EVENT:
        {
            //...

            // Register to connection notifications
            BLEAppUtil_registerConnNotifHandler(gapEstMsg->connectionHandle);

            //...
            
            break;
        }
        
        //...

Once these changes are implemented you should receive the RSSI at each connection event!

I hope this will help,

Best regards,