diff options
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/POWER.txt | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/docs/POWER.txt b/docs/POWER.txt deleted file mode 100644 index 0abbbe48e..000000000 --- a/docs/POWER.txt +++ /dev/null @@ -1,62 +0,0 @@ -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 |