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1，Z-STACK裏面包含了一個OSAL ，所以要爲用戶分配任務，任務中任何事情的交互都要靠事件，按鍵也不列外。SampleApp.c中先要註冊按鍵事件，否則事件和響應事件不會關聯起來。 事件： 註冊事件 搜尋事件發送到OSAL OSAL響應事件 void SampleApp_Init( uint8 task_id ) { SampleApp_TaskID = task_id; SampleApp_NwkState = DEV_INIT; SampleApp_TransID = 0; // Device hardware initialization can be added here or in main() (Zmain.c). // If the hardware is application specific - add it here. // If the hardware is other parts of the device add it in main(). #if defined ( BUILD_ALL_DEVICES ) // The "Demo" target is setup to have BUILD_ALL_DEVICES and HOLD_AUTO_START // We are looking at a jumper (defined in SampleAppHw.c) to be jumpered // together - if they are - we will start up a coordinator. Otherwise, // the device will start as a router. if ( readCoordinatorJumper() ) zgDeviceLogicalType = ZG_DEVICETYPE_COORDINATOR; else zgDeviceLogicalType = ZG_DEVICETYPE_ROUTER; #endif // BUILD_ALL_DEVICES #if defined ( HOLD_AUTO_START ) // HOLD_AUTO_START is a compile option that will surpress ZDApp // from starting the device and wait for the application to // start the device. ZDOInitDevice(0); #endif // Setup for the periodic message's destination address // Broadcast to everyone SampleApp_Periodic_DstAddr.addrMode = (afAddrMode_t)AddrBroadcast; SampleApp_Periodic_DstAddr.endPoint = SAMPLEAPP_ENDPOINT; SampleApp_Periodic_DstAddr.addr.shortAddr = 0xFFFF; // Setup for the flash command's destination address - Group 1 SampleApp_Flash_DstAddr.addrMode = (afAddrMode_t)afAddrGroup; SampleApp_Flash_DstAddr.endPoint = SAMPLEAPP_ENDPOINT; SampleApp_Flash_DstAddr.addr.shortAddr = SAMPLEAPP_FLASH_GROUP; // Fill out the endpoint description. SampleApp_epDesc.endPoint = SAMPLEAPP_ENDPOINT; SampleApp_epDesc.task_id = &SampleApp_TaskID; SampleApp_epDesc.simpleDesc = (SimpleDescriptionFormat_t *)&SampleApp_SimpleDesc; SampleApp_epDesc.latencyReq = noLatencyReqs; // Register the endpoint description with the AF afRegister( &SampleApp_epDesc ); // Register for all key events - This app will handle all key events RegisterForKeys( SampleApp_TaskID ); // By default, all devices start out in Group 1 SampleApp_Group.ID = 0x0001; osal_memcpy( SampleApp_Group.name, "Group 1", 7 ); aps_AddGroup( SAMPLEAPP_ENDPOINT, &SampleApp_Group ); #if defined ( LCD_SUPPORTED ) HalLcdWriteString( "SampleApp", HAL_LCD_LINE_1 ); #endif } uint8 RegisterForKeys( uint8 task_id ) { // Allow only the first task if ( registeredKeysTaskID == NO_TASK_ID ) { registeredKeysTaskID = task_id; return ( true ); } else return ( false ); } 2，按鍵初始化,這裏面主要設置IO的方向和上拉之類的： void HalKeyInit( void ) { /* Initialize previous key to 0 */ halKeySavedKeys = 0; HAL_KEY_SW_6_SEL &= ~(HAL_KEY_SW_6_BIT); /* Set pin function to GPIO */ HAL_KEY_SW_6_DIR &= ~(HAL_KEY_SW_6_BIT); /* Set pin direction to Input */ HAL_KEY_JOY_MOVE_SEL &= ~(HAL_KEY_JOY_MOVE_BIT); /* Set pin function to GPIO */ HAL_KEY_JOY_MOVE_DIR &= ~(HAL_KEY_JOY_MOVE_BIT); /* Set pin direction to Input */ /* Initialize callback function */ pHalKeyProcessFunction = NULL;//回調函數暫時還沒配置 /* Start with key is not configured */ HalKeyConfigured = FALSE;//這裏說明還沒配置好按鍵 } hal_driver.c void HalDriverInit (void) { /* TIMER */ #if (defined HAL_TIMER) && (HAL_TIMER == TRUE) #error "The hal timer driver module is removed." #endif /* ADC */ #if (defined HAL_ADC) && (HAL_ADC == TRUE) HalAdcInit(); #endif /* DMA */ #if (defined HAL_DMA) && (HAL_DMA == TRUE) // Must be called before the init call to any module that uses DMA. HalDmaInit(); #endif /* AES */ #if (defined HAL_AES) && (HAL_AES == TRUE) HalAesInit(); #endif /* LCD */ #if (defined HAL_LCD) && (HAL_LCD == TRUE) HalLcdInit(); #endif /* LED */ #if (defined HAL_LED) && (HAL_LED == TRUE) HalLedInit(); #endif /* UART */ #if (defined HAL_UART) && (HAL_UART == TRUE) HalUARTInit(); #endif /* KEY */ #if (defined HAL_KEY) && (HAL_KEY == TRUE) HalKeyInit(); #endif /* SPI */ #if (defined HAL_SPI) && (HAL_SPI == TRUE) HalSpiInit(); #endif /* HID */ #if (defined HAL_HID) && (HAL_HID == TRUE) usbHidInit(); #endif } void HalKeyInit( void ) { /* Initialize previous key to 0 */ halKeySavedKeys = 0; HAL_KEY_SW_6_SEL &= ~(HAL_KEY_SW_6_BIT); /* Set pin function to GPIO */ HAL_KEY_SW_6_DIR &= ~(HAL_KEY_SW_6_BIT); /* Set pin direction to Input */ HAL_KEY_JOY_MOVE_SEL &= ~(HAL_KEY_JOY_MOVE_BIT); /* Set pin function to GPIO */ HAL_KEY_JOY_MOVE_DIR &= ~(HAL_KEY_JOY_MOVE_BIT); /* Set pin direction to Input */ /* Initialize callback function */ pHalKeyProcessFunction = NULL; /* Start with key is not configured */ HalKeyConfigured = FALSE; } 3,首先按鍵模式設置，其次是設置回調函數 onboard.c 中 InitBoard ==》HalKeyConfig幹這個事，是中斷還是不是中斷。其實說中斷時定時中斷然後查詢按鍵。不是真的按鍵中斷。所以下面的函數有兩個參數。 HAL_KEY.C中 void HalKeyConfig (bool interruptEnable, halKeyCBack_t cback)
{
/* Enable/Disable Interrupt or */
Hal_KeyIntEnable = interruptEnable;
/* Register the callback fucntion */
pHalKeyProcessFunction = cback;
/* Determine if interrupt is enable or not */
if (Hal_KeyIntEnable)
{
/* Rising/Falling edge configuratinn */
PICTL &= ~(HAL_KEY_SW_6_EDGEBIT); /* Clear the edge bit */
/* For falling edge, the bit must be set. */
#if (HAL_KEY_SW_6_EDGE == HAL_KEY_FALLING_EDGE)
PICTL |= HAL_KEY_SW_6_EDGEBIT;
#endif
/* Interrupt configuration:
* - Enable interrupt generation at the port
* - Enable CPU interrupt
* - Clear any pending interrupt
*/
HAL_KEY_SW_6_ICTL |= HAL_KEY_SW_6_ICTLBIT;
HAL_KEY_SW_6_IEN |= HAL_KEY_SW_6_IENBIT;
HAL_KEY_SW_6_PXIFG = ~(HAL_KEY_SW_6_BIT);
/* Rising/Falling edge configuratinn */
HAL_KEY_JOY_MOVE_ICTL &= ~(HAL_KEY_JOY_MOVE_EDGEBIT); /* Clear the edge bit */
/* For falling edge, the bit must be set. */
#if (HAL_KEY_JOY_MOVE_EDGE == HAL_KEY_FALLING_EDGE)
HAL_KEY_JOY_MOVE_ICTL |= HAL_KEY_JOY_MOVE_EDGEBIT;
#endif
/* Interrupt configuration:
* - Enable interrupt generation at the port
* - Enable CPU interrupt
* - Clear any pending interrupt
*/
HAL_KEY_JOY_MOVE_ICTL |= HAL_KEY_JOY_MOVE_ICTLBIT;
HAL_KEY_JOY_MOVE_IEN |= HAL_KEY_JOY_MOVE_IENBIT;
HAL_KEY_JOY_MOVE_PXIFG = ~(HAL_KEY_JOY_MOVE_BIT);
/* Do this only after the hal_key is configured - to work with sleep stuff */
if (HalKeyConfigured == TRUE)
{
osal_stop_timerEx(Hal_TaskID, HAL_KEY_EVENT); /* Cancel polling if active */
}
}
else /* Interrupts NOT enabled */
{
HAL_KEY_SW_6_ICTL &= ~(HAL_KEY_SW_6_ICTLBIT); /* don't generate interrupt */
HAL_KEY_SW_6_IEN &= ~(HAL_KEY_SW_6_IENBIT); /* Clear interrupt enable bit */
osal_set_event(Hal_TaskID, HAL_KEY_EVENT);
//啓動第一次定時按鍵事件，後面就在Hal_ProcessEvent中 osal_start_timerEx( Hal_TaskID, HAL_KEY_EVENT, 100);//定時出現按鍵查詢事件
}
/* Key now is configured */
HalKeyConfigured = TRUE;
}
調用這個的函數是在onboard.c的InitBoard
void InitBoard( uint8 level )
{
if( level == OB_COLD )
{
// IAR does not zero-out this byte below the XSTACK.
*(uint8 *)0x0 = 0;
// Interrupts off
osal_int_disable( INTS_ALL );
// Check for Brown-Out reset
ChkReset();
}
else // !OB_COLD
{
/* Initialize Key stuff */
HalKeyConfig(HAL_KEY_INTERRUPT_DISABLE, OnBoard_KeyCallback);
}
}
到此，按鍵模式設置和回調函數的指向已經確定了。
4,系統怎麼查按鍵呢？
Hal_ProcessEvent==>HalKeyPoll 這裏查到按鍵值併發送消息
Hal_ProcessEvent也有 osal_start_timerEx，讓按鍵定時查詢
這個裏面
hal_driver.c:
uint16 Hal_ProcessEvent( uint8 task_id,uint16 events )
{
uint8 *msgPtr;
(void)task_id; // Intentionallyunreferenced parameter
if( events & SYS_EVENT_MSG
{
msgPtr = osal_msg_receive(Hal_TaskID);
while (msgPtr)
{
/* Do something here - for now, just deallocate the msg and move on */
/* De-allocate */
osal_msg_deallocate( msgPtr );
/* Next */
msgPtr = osal_msg_receive( Hal_TaskID );
}
return events ^ SYS_EVENT_MSG;
}
if( events & HAL_LED_BLINK_EVENT )
{
#if (defined (BLINK_LEDS)) &&(HAL_LED == TRUE)
HalLedUpdate();
#endif /* BLINK_LEDS && HAL_LED */
return events ^ HAL_LED_BLINK_EVENT;
}
if(events & HAL_KEY_EVENT)
{
#if (defined HAL_KEY) && (HAL_KEY== TRUE)
/* Check for keys */
HalKeyPoll();
/* if interrupt disabled, do next polling */
if (!Hal_KeyIntEnable)
{
osal_start_timerEx( Hal_TaskID, HAL_KEY_EVENT, 100);//定時出現按鍵查詢事件
}
#endif // HAL_KEY
return events ^ HAL_KEY_EVENT;
}
#ifdef POWER_SAVING
if( events & HAL_SLEEP_TIMER_EVENT )
{
halRestoreSleepLevel();
return events ^ HAL_SLEEP_TIMER_EVENT;
}
#endif
#ifdef CC2591_COMPRESSION_WORKAROUND
if( events & PERIOD_RSSI_RESET_EVT )
{
macRxResetRssi();
return (events ^ PERIOD_RSSI_RESET_EVT);
}
#endif
/*Nothing interested, discard the message */
return 0;
}
HalKeyPoll 也在hal_key.c中
void HalKeyPoll (void)
{
uint8 keys = 0;
//這裏注意了，ZSTACK的工程師們把這裏定義了很多宏，其實我們懂51的，不用那麼複雜，直接的吧哪些宏幹掉還看得舒服點，哈哈。
if (P0_2 ==0)
{
keys |= HAL_KEY_SW_1;////////
}
if (!HAL_PUSH_BUTTON1())
{
keys |= HAL_KEY_SW_2;////////HAL_KEY_SW_6;
}
//按鍵是哪一個放到keys /* Invoke Callback if new keys were depressed */
if (keys && (pHalKeyProcessFunction))
{
(pHalKeyProcessFunction) (keys, HAL_KEY_STATE_NORMAL);//這裏調用回調函數處理髮送keys按鍵消息到OSAL
}
}
void OnBoard_KeyCallback ( uint8 keys, uint8 state )
{
uint8 shift;
(void)state;
shift = (keys & HAL_KEY_SW_6) ? true : false;
if ( OnBoard_SendKeys( keys, shift ) != ZSuccess ) //
{
// Process SW1 here
if ( keys & HAL_KEY_SW_1 ) // Switch 1
{
}
// Process SW2 here
if ( keys & HAL_KEY_SW_2 ) // Switch 2
{
}
// Process SW3 here
if ( keys & HAL_KEY_SW_3 ) // Switch 3
{
}
// Process SW4 here
if ( keys & HAL_KEY_SW_4 ) // Switch 4
{
}
// Process SW5 here
if ( keys & HAL_KEY_SW_5 ) // Switch 5
{
}
// Process SW6 here
if ( keys & HAL_KEY_SW_6 ) // Switch 6
{
}
}
}
onboard.c中：
*********************************************************************/
uint8 OnBoard_SendKeys( uint8 keys, uint8state )
{
keyChange_t *msgPtr;
if( registeredKeysTaskID != NO_TASK_ID )
{
// Send the address to the task
msgPtr = (keyChange_t *)osal_msg_allocate( sizeof(keyChange_t) );
if ( msgPtr )
{
msgPtr->hdr.event = KEY_CHANGE;
msgPtr->state = state;
msgPtr->keys = keys;
osal_msg_send( registeredKeysTaskID, (uint8 *)msgPtr );
}
return ( ZSuccess );
}
else
return ( ZFailure );
}
到此，按鍵的消息到了OSAL 5,下面就是響應消息： SampleApp.c中調用SampleApp_ProcessEvent響應按鍵消息 uint16 SampleApp_ProcessEvent( uint8 task_id, uint16 events ) { afIncomingMSGPacket_t *MSGpkt; (void)task_id; // Intentionally unreferenced parameter if ( events & SYS_EVENT_MSG ) { MSGpkt = (afIncomingMSGPacket_t *)osal_msg_receive( SampleApp_TaskID ); while ( MSGpkt ) { switch ( MSGpkt->hdr.event ) { // Received when a key is pressed case KEY_CHANGE: SampleApp_HandleKeys( ((keyChange_t *)MSGpkt)->state, ((keyChange_t *)MSGpkt)->keys ); break; // Received when a messages is received (OTA) for this endpoint case AF_INCOMING_MSG_CMD: SampleApp_MessageMSGCB( MSGpkt ); break; // Received whenever the device changes state in the network case ZDO_STATE_CHANGE: SampleApp_NwkState = (devStates_t)(MSGpkt->hdr.status); if ( (SampleApp_NwkState == DEV_ZB_COORD) || (SampleApp_NwkState == DEV_ROUTER) || (SampleApp_NwkState == DEV_END_DEVICE) ) { // Start sending the periodic message in a regular interval. osal_start_timerEx( SampleApp_TaskID, SAMPLEAPP_SEND_PERIODIC_MSG_EVT, SAMPLEAPP_SEND_PERIODIC_MSG_TIMEOUT ); } else { // Device is no longer in the network } break; default: break; } // Release the memory osal_msg_deallocate( (uint8 *)MSGpkt ); // Next - if one is available MSGpkt = (afIncomingMSGPacket_t *)osal_msg_receive( SampleApp_TaskID ); } // return unprocessed events return (events ^ SYS_EVENT_MSG); } // Send a message out - This event is generated by a timer // (setup in SampleApp_Init()). if ( events & SAMPLEAPP_SEND_PERIODIC_MSG_EVT ) { // Send the periodic message SampleApp_SendPeriodicMessage(); // Setup to send message again in normal period (+ a little jitter) osal_start_timerEx( SampleApp_TaskID, SAMPLEAPP_SEND_PERIODIC_MSG_EVT, (SAMPLEAPP_SEND_PERIODIC_MSG_TIMEOUT + (osal_rand() & 0x00FF)) ); // return unprocessed events return (events ^ SAMPLEAPP_SEND_PERIODIC_MSG_EVT); } // Discard unknown events return 0; } /********************************************************************* * Event Generation Functions */ /********************************************************************* * @fn SampleApp_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 */ void SampleApp_HandleKeys( uint8 shift, uint8 keys ) { (void)shift; // Intentionally unreferenced parameter if ( keys & HAL_KEY_SW_1 ) { /* This key sends the Flash Command is sent to Group 1. * This device will not receive the Flash Command from this * device (even if it belongs to group 1). */ SampleApp_SendFlashMessage( SAMPLEAPP_FLASH_DURATION ); } if ( keys & HAL_KEY_SW_2 ) { /* The Flashr Command is sent to Group 1. * This key toggles this device in and out of group 1. * If this device doesn't belong to group 1, this application * will not receive the Flash command sent to group 1. */ aps_Group_t *grp; grp = aps_FindGroup( SAMPLEAPP_ENDPOINT, SAMPLEAPP_FLASH_GROUP ); if ( grp ) { // Remove from the group aps_RemoveGroup( SAMPLEAPP_ENDPOINT, SAMPLEAPP_FLASH_GROUP ); } else { // Add to the flash group aps_AddGroup( SAMPLEAPP_ENDPOINT, &SampleApp_Group ); } } } 就這幾點，還有中間一些藍色標記的細節。複雜。疏理了下好像是簡單了點。貽笑大方了。 轉載: http://bbs.eeworld.com.cn/thread-455980-1-1.html |
