ToCoNet_Event_u32TickFrNewState()

Explanation

Obtain the time elapsed since the transition to the current state of the user-defined event function.

Used for timeouts, e.g. waiting for transmission completion.

The value in the initial state E_STATE_IDLE is undefined.

Argument

Type	Name	Remark
tsEvent *	pEv	Management structure for user event definition functions.

Returns

Type	Remark
uint32	the elapsed time since the transition.

Sample code

The following example shows how to process a send (transition to E_STATE_APP_TX_REQUEST) when a certain condition is met in E_STATE_IDLE. If the transmission is successful, cond_if_tx_complete is set to 1 or 0xff, but if this value is not set before 100ms has elapsed, the transmission times out.

uint8 cond_if_tx_complete;

void cbToCoNet_vTxEvent(uint8 u8CbId, uint8 bStatus) {
	if(bStatus & 0x01) {
		cond_if_tx_complete = 0x1; // TX success
	} else {
		cond_if_tx_complete = 0xFF; // TX FAIL
	}
}

void vProcessEvCore(
        tsEvent *pEv,
        teEvent eEvent,
        uint32 u32evarg) {
    static bool_t cond;
	
	switch (pEv->eState) {
	case E_STATE_IDLE:
		...
		if(...) {
			// changer state for wireless transmission
			ToCoNet_Event_SetState(pEv, E_STATE_APP_TX_REQUEST);
		}
		break;
		
	case E_STATE_APP_TX_REQUEST:
		if (eEvent == E_EVENT_NEW_STATE) {
			// place a transmission request.
			tsTxDataApp sTx;
			...
			cond_if_tx_complete = FALSE; // set completion flag as deferred.
			if (!ToCoNet_bMacTxReq(&sTx)) {
				// fails
				ToCoNet_Event_SetState(pEv, E_STATE_APP_ERROR);
			}
		}
		
		// Confirmation of transmission completion conditions
		if (cond_if_tx_complete == 0x1) {
			// Tx success!
			ToCoNet_Event_SetState(pEv, E_STATE_IDLE);
		} else if (cond_if_tx_complete == 0xFF) {
			// Tx fails
 			ToCoNet_Event_SetState(pEv, E_STATE_APP_ERROR);
 		}
		
		// Tx Timeout
		if (ToCoNet_Event_u32TickFrNewState(pEv) > 100) {
			ToCoNet_Event_SetState(pEv, E_STATE_APP_ERROR);
		}
		break;
		
	case E_STATE_APP_ERROR:
		... // error handling
		break;
}