/*********************************************************************
* @fn simpleTopology_handleKeys
*
* @brief Handles all key events for this device.
*
* @param shift - true if in shift/alt.
* @param keys - bit field for key events. Valid entries:
* HAL_KEY_SW_2
* HAL_KEY_SW_1
*
* @return none
*/
static void simpleTopology_handleKeys(uint8_t shift, uint8_t keys)
{
(void)shift; // Intentionally unreferenced parameter
if (LCDmenu == MAIN_MENU)
{
if (keys & KEY_LEFT) //show discovery results
{
selectKey = DISCOVERED_DEVICES;
// If discovery has occurred and a device was found
if (!scanningStarted && scanRes > 0)
{
// Increment index of current result (with wraparound)
scanIdx++;
if (scanIdx >= scanRes)
{
scanIdx = 0;
}
LCD_WRITE_STRING_VALUE("Device", (scanIdx + 1), 10, LCD_PAGE3);
LCD_WRITE_STRING(Util_convertBdAddr2Str(devList[scanIdx].addr), LCD_PAGE4);
}
return;
}
if (keys & KEY_UP) //Scan for devices
{
// Start or stop discovery
if (gapRoleNumLinks(GAPROLE_AVAILABLE_LINKS) > 0) //if we can connect to another device
{
if (!scanningStarted) //if we're not already scanning
{
scanningStarted = TRUE;
scanRes = 0;
LCD_WRITE_STRING("Discovering...", LCD_PAGE3);
LCD_WRITE_STRING("", LCD_PAGE4);
LCD_WRITE_STRING("", LCD_PAGE6);
GAPRole_StartDiscovery(DEFAULT_DISCOVERY_MODE,
DEFAULT_DISCOVERY_ACTIVE_SCAN,
DEFAULT_DISCOVERY_WHITE_LIST);
}
else //cancel scanning
{
LCD_WRITE_STRING("Discovery Cancelled", LCD_PAGE3);
GAPRole_CancelDiscovery();
scanningStarted = FALSE;
}
}
else // can't add more links at this time
{
LCD_WRITE_STRING("Can't scan:no links ", LCD_PAGE3);
}
return;
}
if (keys & KEY_RIGHT) // turn advertising on / off
{
uint8_t adv;
uint8_t adv_status;
GAPRole_GetParameter(GAPROLE_ADVERT_ENABLED, &adv_status, NULL);
if (adv_status) //turn off
{
adv = FALSE;
GAPRole_SetParameter(GAPROLE_ADVERT_ENABLED, sizeof(uint8_t), &adv, NULL);
}
else //turn on
{
adv = TRUE;
GAPRole_SetParameter(GAPROLE_ADVERT_ENABLED, sizeof(uint8_t), &adv, NULL);
}
return;
}
if (keys & KEY_SELECT) //connect to a discovered device
{
if (selectKey == DISCOVERED_DEVICES) // connect to a device
{
uint8_t addrType;
uint8_t *peerAddr;
if (connecting_state == 1) // if already attempting to connect, cancel connection
{
GAPRole_TerminateConnection(0xFFFE);
LCD_WRITE_STRING("Connecting stopped.", LCD_PAGE3);
connecting_state = 0;
}
else //establish new connection
{
// if there is a scan result
if (scanRes > 0)
{
// connect to current device in scan result
peerAddr = devList[scanIdx].addr;
addrType = devList[scanIdx].addrType;
GAPRole_EstablishLink(DEFAULT_LINK_HIGH_DUTY_CYCLE,
DEFAULT_LINK_WHITE_LIST,
addrType, peerAddr);
connecting_state = 1;
LCD_WRITE_STRING("Connecting", LCD_PAGE3);
LCD_WRITE_STRING(Util_convertBdAddr2Str(peerAddr), LCD_PAGE4);
}
}
}
else if (selectKey == CONNECTED_DEVICES) //enter the device menu
{
if (multiConnInfo[connIdx].gapRole_ConnectionHandle != INVALID_CONNHANDLE)
{
LCDmenu = DEVICE_MENU;
LCD_WRITE_STRING("Device Menu", LCD_PAGE3);
LCD_WRITE_STRING(Util_convertBdAddr2Str(multiConnInfo[connIdx].gapRole_devAddr), LCD_PAGE4);
if (multiConnInfo[connIdx].gapRole_ConnRole == GAP_PROFILE_CENTRAL)
{
LCD_WRITE_STRING("Connected as Central", LCD_PAGE5);
LCD_WRITE_STRING("", LCD_PAGE6);
LCD_WRITE_STRING("", LCD_PAGE7);
}
else //PERIPHERAL
{
LCD_WRITE_STRING("Connected as Periph", LCD_PAGE5);
LCD_WRITE_STRING("", LCD_PAGE6);
LCD_WRITE_STRING("", LCD_PAGE7);
}
//use this connection for all functionality
connHandle = multiConnInfo[connIdx].gapRole_ConnectionHandle;
}
else // no active connection here
LCD_WRITE_STRING("No Connection here.", LCD_PAGE3);
}
return;
}
if (keys & KEY_DOWN) //browse connected devices
{
LCD_WRITE_STRING("Connected Device:", LCD_PAGE3);
if (++connIdx >= MAX_NUM_BLE_CONNS) //increment connIdx
{
connIdx = 0;
}
if (multiConnInfo[connIdx].gapRole_ConnectionHandle != INVALID_CONNHANDLE) //if there is a connection at this index
{
LCD_WRITE_STRING(Util_convertBdAddr2Str(multiConnInfo[connIdx].gapRole_devAddr), LCD_PAGE4);
}
else
{
LCD_WRITE_STRING("N/A", LCD_PAGE4);
}
selectKey = CONNECTED_DEVICES;
}
return;
}
else if (LCDmenu == DEVICE_MENU)
{
if (keys & KEY_UP) //read/whrite char
{
if (charHdl[connIdx] != 0)
{
uint8_t status;
// Do a read or write as long as no other read or write is in progress
if (doWrite)
{
// Do a write
attWriteReq_t req;
req.pValue = GATT_bm_alloc(connHandle, ATT_WRITE_REQ, 1, NULL);
if ( req.pValue != NULL )
{
req.handle = charHdl[connIdx];
req.len = 1;
req.pValue[0] = charVal;
req.sig = 0;
req.cmd = 0;
status = GATT_WriteCharValue(connHandle, &req, selfEntity);
if ( status != SUCCESS )
{
GATT_bm_free((gattMsg_t *)&req, ATT_WRITE_REQ);
}
}
}
else
{
// Do a read
attReadReq_t req;
req.handle = charHdl[connIdx];
status = GATT_ReadCharValue(connHandle, &req, selfEntity);
}
if (status == SUCCESS)
{
doWrite = !doWrite;
}
}
return;
}
if (keys & KEY_RIGHT) //connection update...eventually
{
asm("NOP");
return;
}
if (keys & KEY_SELECT)
{
GAPRole_TerminateConnection(connHandle);
LCD_WRITE_STRING("Disconnecting", LCD_PAGE5);
LCD_WRITE_STRING("", LCD_PAGE6);
return;
}
if (keys & KEY_DOWN) //back to main menu
{
LCDmenu = MAIN_MENU;
LCD_WRITE_STRING("Main Menu", LCD_PAGE3);
//clear screen
LCD_WRITE_STRING("", LCD_PAGE4);
LCD_WRITE_STRING("", LCD_PAGE5);
LCD_WRITE_STRING("", LCD_PAGE6);
LCD_WRITE_STRING("", LCD_PAGE7);
LCD_WRITE_STRING_VALUE("Connected to ", gapRoleNumLinks(GAPROLE_ACTIVE_LINKS) ,10, LCD_PAGE0);
connIdx = 0;
return;
}
}
}
/*********************************************************************
* @fn simpleTopology_taskFxn
*
* @brief Application task entry point for the Simple BLE Multi.
*
* @param a0, a1 - not used.
*
* @return None.
*/
static void simpleTopology_taskFxn(UArg a0, UArg a1)
{
// Initialize application
simpleTopology_init();
// Application main loop
for (;;)
{
// Waits for a signal to the semaphore associated with the calling thread.
// Note that the semaphore associated with a thread is signaled when a
// message is queued to the message receive queue of the thread or when
// ICall_signal() function is called onto the semaphore.
ICall_Errno errno = ICall_wait(ICALL_TIMEOUT_FOREVER);
if (errno == ICALL_ERRNO_SUCCESS)
{
ICall_EntityID dest;
ICall_ServiceEnum src;
ICall_HciExtEvt *pMsg = NULL;
if (ICall_fetchServiceMsg(&src, &dest,
(void **)&pMsg) == ICALL_ERRNO_SUCCESS)
{
uint8 safeToDealloc = TRUE;
if ((src == ICALL_SERVICE_CLASS_BLE) && (dest == selfEntity))
{
// Process inter-task message
safeToDealloc = simpleTopology_processStackMsg((ICall_Hdr *)pMsg);
}
if (pMsg && safeToDealloc)
{
ICall_freeMsg(pMsg);
}
}
// If RTOS queue is not empty, process app message.
while (!Queue_empty(appMsgQueue))
{
sbtEvt_t *pMsg = (sbtEvt_t *)Util_dequeueMsg(appMsgQueue);
if (pMsg)
{
// Process message.
simpleTopology_processAppMsg(pMsg);
// Free the space from the message.
ICall_free(pMsg);
}
}
}
// the trigger was a periodic event
// trigger was the SCAN_EVENT
if (!!(events & SCAN_EVENT))
{
// effectively mark off the event as "handled"
events &= ~SCAN_EVENT;
// now start discovery.
// CJ: I think that the scan parameters are set in such a way
// that it will start and stop itself
scanningStarted = true;
GAPRole_StartDiscovery(DEFAULT_DISCOVERY_MODE, DEFAULT_DISCOVERY_ACTIVE_SCAN,
DEFAULT_DISCOVERY_WHITE_LIST);
}
}
}