Class _corec: core of the device

A class _corec object is a core of the device.

It is used in:

• ATmega16U4/32U4 : core0

Actions

configure:

hwa( configure, core0,
 
     //  Whether the `hw( wait, irq )` instruction will put the core in
     //  sleep mode or not
     //
   [ sleep,        enabled,
                 | disabled, ]
 
     //  Wanted sleep mode
     //
   [ sleep_mode,   idle
                 | adc_noise_reduction
                 | power_down
                 | power_save
                 | standby
                 | extended_standby     ]
     );

wait, irq: puts the core into sleeping mode

hw( wait, irq );

Status

The hw(stat,) instruction returns the status flags of the core in a structure whose typename is given by the hw_stat_t() instruction. Available flags are

• porf or reset_by_power_on 1 if reset was caused by power-on
• extrf or reset_by_reset_pin 1 if reset was caused by external pin RESET
• borf or reset_by_brown_out 1 if reset was caused by brown-out detection
• wdrf or reset_by_watchdog 1 if reset was caused by watchdog
• jtrf or reset_by_jtag 1 if reset was caused by JTAG
• usbrf or reset_by_usb 1 if reset was caused by USB

hw_stat_t( core0 ) st ;
st = hw( stat, core0 );
if ( st.wdrf ) {
  n_wdresets++ ;    // Increment watchdog resets count
}

clear: clears the status flags all at once

hwa( clear, core0 );