mirror of
https://github.com/Keychron/qmk_firmware.git
synced 2024-11-25 01:47:10 +06:00
63 lines
2.0 KiB
Plaintext
63 lines
2.0 KiB
Plaintext
Time to Sleep
|
|
=============
|
|
USB suspend no activity on USB line for 3ms
|
|
No Interaction no user interaction
|
|
matrix has no change
|
|
matrix has no switch on
|
|
|
|
|
|
AVR Power Management
|
|
====================
|
|
|
|
V-USB suspend
|
|
USB suspend
|
|
http://vusb.wikidot.com/examples
|
|
|
|
MCUSR MCU Status Register
|
|
WDRF Watchdog Reset Flag
|
|
BORF
|
|
EXTRF
|
|
PORF Power-on Reset Flag
|
|
|
|
SMCR Sleep Mode Control Register
|
|
SE Sleep Enable
|
|
SM2:0
|
|
#define set_sleep_mode(mode) \
|
|
#define SLEEP_MODE_IDLE (0)
|
|
#define SLEEP_MODE_ADC _BV(SM0)
|
|
#define SLEEP_MODE_PWR_DOWN _BV(SM1)
|
|
#define SLEEP_MODE_PWR_SAVE (_BV(SM0) | _BV(SM1))
|
|
#define SLEEP_MODE_STANDBY (_BV(SM1) | _BV(SM2))
|
|
#define SLEEP_MODE_EXT_STANDBY (_BV(SM0) | _BV(SM1) | _BV(SM2))
|
|
|
|
|
|
ACSR Analog Comparator Control and Status Register
|
|
To disable Analog Comparator
|
|
ACSR = 0x80;
|
|
or
|
|
ACSR &= ~_BV(ACIE);
|
|
ACSR |= _BV(ACD);
|
|
|
|
ACD: Analog Comparator Disable
|
|
When this bit is written logic one, the power to the Analog Comparator is
|
|
switched off. This bit can be set at any time to turn off the Analog
|
|
Comparator. This will reduce power consumption in Active and Idle mode.
|
|
When changing the ACD bit, the Analog Comparator Interrupt must be disabled
|
|
by clearing the ACIE bit in ACSR. Otherwise an interrupt can occur when
|
|
the bit is changed.
|
|
|
|
DIDR1 Digital Input Disable Register 1
|
|
AIN1D
|
|
AIN0D
|
|
When this bit is written logic one, the digital input buffer on the AIN1/0 pin is disabled. The corresponding PIN Register bit will always read as zero when this bit is set. When an analog signal is applied to the AIN1/0 pin and the digital input from this pin is not needed, this bit should be written logic one to reduce power consumption in the digital input buffer.
|
|
|
|
|
|
PRR Power Reduction Register
|
|
PRTWI
|
|
PRTIM2
|
|
PRTIM0
|
|
PRTIM1
|
|
PRSPI
|
|
PRUSART0
|
|
PRADC
|