ZigBee學習之33—osal_start_system()

1、#1樓主：【原創(chuàng)】ZigBee學習之33osal_start_system()文章發(fā)表于：2010-02-12 17:34 osal_start_system(); /運行系統(tǒng)【OSAL.c】/此函數(shù)是任務系統(tǒng)的主循環(huán)函數(shù)，他將輪詢所有任務事件然后調(diào)用相關的任務處理函數(shù)，沒有任務時將進入休眠狀態(tài)。void osal_start_system( void )#if !defined ( ZBIT )/雖然搞不清楚這個ZBIT什么東西，不過應該是沒有定義的，如果定義了的話所有函數(shù)只會順序跑下來，跑完這個函數(shù)整個系統(tǒng)就結束了，沒有意義，這里看到這個無限循環(huán)應該就是整個系統(tǒng)的運行方式了 for(;)

2、#endif uint8 idx = 0; Hal_ProcessPoll(); / This replaces MT_SerialPoll() and osal_check_timer()./OSAL調(diào)用此函數(shù)來推送UART，TIMER?！緃al_drivers.c】void Hal_ProcessPoll ()/選取定時器 HalTimerTick();/檢查定時器的計數(shù)溢出【hal_timer.c】void HalTimerTick (void) if (!halTimerRecordHW_TIMER_1.intEnable) halProcessTimer1 ();/處理TIMER1事

3、件void halProcessTimer1 (void) if (halTimerRecordhalTimerRemap(HAL_TIMER_3).channelMode = HAL_TIMER_CH_MODE_OUTPUT_COMPARE)/處理通道模式為輸出比較時的情況 if (T1CTL & T1CTL_CH0IF)/檢查通道0中斷標志看是否達到設定的中斷要求 T1CTL &= (T1CTL_CH0IF);/清除中斷標志 halTimerSendCallBack (HAL_TIMER_3, HAL_TIMER_CHANNEL_A, HAL_TIMER_CH_MODE_O

4、UTPUT_COMPARE);/給回調(diào)函數(shù)發(fā)送回應void halTimerSendCallBack (uint8 timerId, uint8 channel, uint8 channelMode) uint8 hwtimerid; hwtimerid = halTimerRemap (timerId); if (halTimerRecordhwtimerid.callBackFunc) (halTimerRecordhwtimerid.callBackFunc) (timerId, channel, channelMode); if (T1CTL & T1CTL_CH1IF) T1

5、CTL &= (T1CTL_CH1IF); halTimerSendCallBack (HAL_TIMER_3, HAL_TIMER_CHANNEL_B, HAL_TIMER_CH_MODE_OUTPUT_COMPARE); if (T1CTL & T1CTL_CH2IF) T1CTL &= (T1CTL_CH2IF); halTimerSendCallBack (HAL_TIMER_3, HAL_TIMER_CHANNEL_C, HAL_TIMER_CH_MODE_OUTPUT_COMPARE); else if (halTimerRecordhalTimerRema

6、p(HAL_TIMER_3).channelMode = HAL_TIMER_CH_MODE_OVERFLOW) if (T1CTL & T1CTL_OVFIF) T1CTL &= (T1CTL_OVFIF); halTimerSendCallBack (HAL_TIMER_3, HAL_TIMER_CHANNEL_SINGLE, HAL_TIMER_CH_MODE_OVERFLOW); if (!halTimerRecordHW_TIMER_3.intEnable) halProcessTimer3 (); if (!halTimerRecordHW_TIMER_4.intE

7、nable) halProcessTimer4 (); /* UART的選取*/#if (defined HAL_UART) && (HAL_UART = TRUE) HalUARTPoll();/【hal_uart.c】typedef struct uint8 *rxBuf; uint8 rxHead; uint8 rxTail; uint8 rxMax; uint8 rxCnt; uint8 rxTick; uint8 rxHigh; uint8 *txBuf;#if HAL_UART_BIG_TX_BUF uint16 txHead; uint16 txTail; uin

8、t16 txMax; uint16 txCnt;#else uint8 txHead; uint8 txTail; uint8 txMax; uint8 txCnt;#endif uint8 txTick; uint8 flag; halUARTCBack_t rxCB; uartCfg_t;/UART數(shù)據(jù)結構，這個數(shù)據(jù)結構在文檔中沒有提到，估計是串口緩存區(qū)的配置串口需要掌握的是HalUARTOpen函數(shù)和halUARTCfg_t數(shù)據(jù)結構#endif do if (tasksEventsidx) /輪詢檢查任務 break; while (+idx < tasksCnt); if (id

9、x < tasksCnt) uint16 events; halIntState_t intState; HAL_ENTER_CRITICAL_SECTION(intState); events = tasksEventsidx; tasksEventsidx = 0; / Clear the Events for this task. HAL_EXIT_CRITICAL_SECTION(intState); events = (tasksArridx)( idx, events );/根據(jù)事件的類型執(zhí)行相關的任務處理函數(shù) HAL_ENTER_CRITICAL_SECTION(intState); tasksEventsidx |= events; / Add back unprocessed events to the current task. HAL_EXIT_CRITICAL_SECTION(intState); #if defined( Power_SAVING ) else / Comp