![X[Deca] AVR study
Konkuk University. Department of Electronic Engineering
v0.1 by08蠍 蟾覈
v0.2 by11蠍 燕](https://image.slidesharecdn.com/04-150701021919-lva1-app6892/85/04-external-interrupt-1-320.jpg)
![Page 3
Interrupt
Interrupt
1. ~(sb/sth) (with sth) (襷, ) 覦危[譴る/螳襦襷]
Interrupt ?
- ろ譴 襦蠏碁 殊 譴螻 るジ 襦蠏碁 殊 ｌ ろる 蟆
Polling ?
- 轟 譯手鍵襯 螳讌螻 蠏 譯手鍵 襷 豌襴襯 蠏碁 れ 讌 蟆](https://image.slidesharecdn.com/04-150701021919-lva1-app6892/85/04-external-interrupt-3-320.jpg)
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04. external interrupt
- 1. X[Deca] AVR study Konkuk University. Department of Electronic Engineering v0.1 by08蠍 蟾覈 v0.2 by11蠍 燕
- 2. Page 2 Contents Contents 1 External Interrupt
- 3. Page 3 Interrupt Interrupt 1. ~(sb/sth) (with sth) (襷, ) 覦危[譴る/螳襦襷] Interrupt ? - ろ譴 襦蠏碁 殊 譴螻 るジ 襦蠏碁 殊 ｌ ろる 蟆 Polling ? - 轟 譯手鍵襯 螳讌螻 蠏 譯手鍵 襷 豌襴襯 蠏碁 れ 讌 蟆
- 4. Page 4 External Interrupt External Interrupt in Atmega128 - The External Interrupts INT7:0 pin trigger . - Interrupt襯 enable る 企 pin output朱 朱 interrupt螳 trigger . - External interrupt low level / falling edge / rising edge trigger . - EICRA / EICRB / EIMSK / EIFR Interrupt 覦 蟇 - Global Interrupt Enable - Each Interrupt Enable - Interrupt occur
- 5. Page 5 External Interrupt 1.EICRA External Interrupt Control Register A - INT0 ~ INT3 External interrupt 伎 企 碁ゼ Sensing讌
- 6. Page 6 External Interrupt 2. EICRB External Interrupt Control Register B - INT4 ~ INT7 External interrupt 伎 企 碁ゼ Sensing讌
- 7. Page 7 Exteranl Interrupt 3. EIMSK External Interrupt Mask Register - Global interrupt螳 enable 螻 - EIMSK bit螳 set 覃 ( 螻褐 1襦 讌伎朱) - 企 external interrupt螳 enable . 4. EIFR External Interrupt Flag Register - Global interrupt enable / External interrupt enable - interrupt occur (覦)企 - EIFR 企 bit螳 set(1).
- 8. Page 8 External Interrupt Global interrupt - sei() : Global interrupt enable - cli() : Global interrupt disable Interrupt Service Routine - 誤磯渚 企欧 豌襴襯 貊 朱
- 9. Page 9 External Interrupt_れ1 SW5 1 4 2 3 0 VCC R13 10k PD0(INT0) SW6 1 4 2 3 VCC 0 R14 10k PD1(INT1) C2 103 C3 103 00 1. れ 1 -LED螳 0.5豐 譯手鍵襦 襦 螻 貅讌. -Interruptれ豺襯 襯企, LED1襦 豐蠍壱 .
- 10. Page 10 External Interrupt_れ2 1. れ 2-1 -LED螳 LED1覿 LED8 覦レ朱 1豐 螳蟆朱 貅讌. -Interruptれ豺1 襯企 LED1覿 LED8覦レ朱 貅讌. -Interruptれ豺2襯 襯企 LED8覿 LED1覦レ朱 貅讌. - 覃 (LED1 or LED8) るジ 讓 朱 螳(LED8 or LED1). 2. れ 2-2 -LED螳 LED1覿 LED8 覦レ朱 1豐 螳蟆朱 貅讌. -れ豺1 襯企 LED1覿 LED8覦レ朱 貅讌. -れ豺2襯 襯企 LED8覿 LED1覦レ朱 貅讌. - 覃 (LED1 or LED8) るジ 讓 朱 螳(LED8 or LED1).
- 11. Page 11 External 鴛稼岳艶姻姻顎沿岳喝れ騎2-1
- 12. Page 12 External 鴛稼岳艶姻姻顎沿岳喝れ騎2-2
- 13. Page 13 External Interrupt_れ3 1. れ 3-1 -Interruptれ豺1 襯願 LED豌願 貅讌 襦 讌. -Interruptれ豺1襯 朱, LED豌願 蟶殊 襦 讌. 2. れ 3-2 -LED螳 LED1覿 LED8 覦レ朱 0.5豐 螳蟆朱 貅讌. - 覃 (LED1 or LED8) るジ 讓 朱 螳(LED8 or LED1). -LED 螻 讌. -Interruptれ豺1 襯 , USART旧朱 覃伎 O(覓語 o)豢. -Interruptれ豺2襯 , USART旧朱 覃伎 X(覓語 x)豢.
- 14. Page 14 External 鴛稼岳艶姻姻顎沿岳喝れ騎3喝1
- 15. Page 15 External 鴛稼岳艶姻姻顎沿岳喝れ騎3喝2
Editor's Notes
- #2: 1