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よくある質問
When programming with the ICP Programming Tool, does user need to initialize watchdog in the program after enabling the "Watchdog" option in the Configuration Bits setting? Does user need to clear the time-out flag? 日付:2017-04-24
When programming with the ICP Programming Tool, click the "Setting" button under the Config Bits to open the Chip Options. In the chip options, user can enable the “Watchdog” option, as shown below:
After the "Watchdog" is enabled, the user does not need to initialize the watchdog. After chip reset (except System Reset and CPU Reset), the following initialization is automatically performed for the watchdog:
- Set WDTEN (WDT Enable) andRSTEN(WDTTime-outReset Enable Control) to 1.
- Set WDTSEL (Watchdog Timer Clock Source Selection) to 111, i.e. 10 kHz LIRC.
- TOUTSEL (WDT Time-out Interval Selection) is preset 111, i.e. the time-out time is 218 * WDT_CLK (about 26.214 seconds)
The user needs to clear the time-out flag after the watchdog timer triggers a time-out event; otherwise it will cause watchdog reset (WDT Reset). The user can also modify WDTSEL and TOUTSEL in the program, and select the appropriate clock source and time-out.
| 製品: | マイクロコントローラ ,Arm Cortex-M0 MCU ,M0518シリーズ ,M0519シリーズ ,ナノ 100/102 ベースシリーズ ,Nano103 ベースシリーズ ,ナノ 110/112 LCD シリーズ ,ナノ 120 USB シリーズ ,ナノ 130 アドバンストシリーズ ,Arm Cortex-M4 MCU ,M451 Base シリーズ ,M451M シリーズ ,M452 USB シリーズ ,M453 CAN シリーズ ,M4TK タッチキーシリーズ ,NUC442/472 シリーズ |
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| アプリケーション: | |
| 機能: | Peripherals,Timer and PWM,Watchdog Timer (WDT),Software and Tools,Nu Tools,In Circuit Programming (ICP) Tool |