问LowPower库:关闭(睡眠)一个ATMega32u4工作，但唤醒不会发生

EN

attachInterrupt( digitalPinToInterrupt( TEP_PIN_TOUCHSENSOR ), wakeup, HIGH );

#include <LowPower.h>          // To enter sleep mode, save power 
#include <avr/wdt.h>           // For watchDog device reset


......

#define TEP_IR_RECV_PIN         16
#define TEP_PIN_TOUCHSENSOR     9

    ......
    ......

namespace TEP_LIB_FUNCS
{

void pciSetup(uint8_t iPin)
{
    *digitalPinToPCMSK( iPin ) |= bit( digitalPinToPCMSKbit( iPin ) );  // enable pin
    PCIFR|= bit( digitalPinToPCICRbit( iPin )); // clear any outstanding interrupt
    PCICR|= bit( digitalPinToPCICRbit( iPin )); // enable interrupt for the group
}

#if defined( TEP_PIN_TOUCHSENSOR )
 #if TEP_PIN_TOUCHSENSOR >= 8 && TEP_PIN_TOUCHSENSOR <= 13 
 ISR(PCINT0_vect) 
 {    
  #define TEP_SLEEP_WAKEUP_PIN_ENABLED 0 
  // Event handler for pins: D8 to D13 
  // Pin change wakeup event handler, does nothing but is required. 
  // Do not remove this.
 } 
 #elif defined(A0) && defined(A5) && TEP_PIN_TOUCHSENSOR >= A0 && TEP_PIN_TOUCHSENSOR <= A5 
 ISR(PCINT1_vect) 
 {    
  #define TEP_SLEEP_WAKEUP_PIN_ENABLED 1 
  // Event handler for pins: A0 to A5 
  // Pin change wakeup event handler, does nothing but is required. 
  // Do not remove this.
 } 
 #elif TEP_PIN_TOUCHSENSOR >= 0 && TEP_PIN_TOUCHSENSOR <= 7 
 ISR(PCINT2_vect) 
 {    
  #define TEP_SLEEP_WAKEUP_PIN_ENABLED 0 
  // Event handler for pins: A0 to A5 
  // Pin change wakeup event handler, does nothing but is required. 
  // Do not remove this.
 } 
 #endif
#endif

void sleep()
{
  // Possible pins Micro, Leonardo, other 32u4-based:  0, 1, 2, 3, 7.
  // Because we use all pins already by other functions, we cannot
  // use attachInterrupt(), it doesn't work.
  // see also: https://www.arduino.cc/en/Reference/AttachInterrupt
  // Instead of this we use a change event interrupt to wake up 
  // the device from sleep state.  
  //
  // The device can be woke up by using:
  // - The reset button
  // - The touch sensor

  // Okay, lets go
  // We enable interrupts here to be sure it is going to work
 interrupts();

 #ifdef TEP_SLEEP_WAKEUP_PIN_ENABLED
  // Set pin change interrupt enabled for sensor pin
  // (See also https://playground.arduino.cc/Main/PinChangeInterrupt)
   // old code: attachInterrupt( digitalPinToInterrupt( TEP_PIN_TOUCHSENSOR ), wakeup, HIGH );
   // old code: attachInterrupt( digitalPinToInterrupt( TEP_IR_RECV_PIN ), wakeup, HIGH ); 
  pciSetup( TEP_PIN_TOUCHSENSOR );
 #endif

 // Enter power down state with ADC and BOD module disabled.
 // Wake up when wake up pin has changed.
 LowPower.powerDown( SLEEP_FOREVER, ADC_OFF, BOD_OFF );

 // Disable external pin interrupt on wake up pin.
  // old code: detachInterrupt( TEP_PIN_TOUCHSENSOR );
  // old code: detachInterrupt( TEP_IR_RECV_PIN ); 
}


 void softReset()
 {
   wdt_enable(WDTO_15MS);  
   while(true) {}
 } 

  // Function Implementation
 void init(void)
 {
   MCUSR = 0;
   wdt_disable();
 }

} // end namespace TEP_LIB_FUNCS

void TEnjoyPad::setSleepMode()
{
  // Notify user device entering sleep mode, beep twice
 setBeep( 200 );
 setBeep( 200, 100, false );

  // To be sure: Trigger end / unhandled down events and reset states
 reset(init);

  // Shut down any 
 broadcastSleepMode();

  // Handle sleep event
 eventSleep();

  // Stop all peripherals
 end();

  // Turn off onboard led
 digitalWrite( 13, LOW );
 pinMode( 13, INPUT ); 

  // Finally go to sleep, code stops here
 TEP_LIB_FUNCS::sleep();

  // Device woke up
 setBeep( 500, 100, false );

  // Handle wake up event
 eventAwake();

  // Restart whole device, start from scratch.
  // This seems to be the best way to guarantee all 
  // peripherals will be initialized properly
  // and without errors.
 TEP_LIB_FUNCS::softReset();
}