Add power control of keyswitch board and tweak scan wait
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					 3 changed files with 77 additions and 6 deletions
				
			
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			@ -71,7 +71,7 @@ MCU = atmega32u4
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#     does not *change* the processor frequency - it should merely be updated to
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#     reflect the processor speed set externally so that the code can use accurate
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#     software delays.
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F_CPU = 8000000
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F_CPU = 16000000
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#
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			@ -109,7 +109,7 @@ OPT_DEFS += -DBOOTLOADER_SIZE=4096
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# Build Options
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#   comment out to disable the options.
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#
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BOOTMAGIC_ENABLE = yes	# Virtual DIP switch configuration
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#BOOTMAGIC_ENABLE = yes	# Virtual DIP switch configuration
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MOUSEKEY_ENABLE = yes	# Mouse keys
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EXTRAKEY_ENABLE = yes	# Audio control and System control
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CONSOLE_ENABLE = yes	# Console for debug
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										48
									
								
								keyboard/hhkb/doc/Power.txt
									
										
									
									
									
										Normal file
									
								
							
							
						
						
									
										48
									
								
								keyboard/hhkb/doc/Power.txt
									
										
									
									
									
										Normal file
									
								
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			@ -0,0 +1,48 @@
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HHKB Power consumption
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----------------------
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**Power consumption
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    board   clock/prescaler     keyswitch   power ctrl      current
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    --------------------------------------------------------------------------
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    tmk     16MHz               no          no              26.4mA
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    tmk     16MHz               pro1        no              45.1mA
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    tmk     16MHz/2             no          no              18.1mA
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    tmk     16MHz/2             pro1        no              37.3mA
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    tmk     8MHz                no          no              18.9mA
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    tmk     8MHz                pro2        no(w/o FET)     32.1mA
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    tmk     8MHz                pro2        no(w FET)       32.1mA withou POWER_ON/FF
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    tmk     8MHz                pro2        no(w FET)       32.6mA with POWR_ON/OFF
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    tmk     8MHz                pro2        15ms(w FET)     21.3mA with POWR_ON/OFF, enumerated but error -32
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    tmk     8MHz                pro2        60ms(w FET)     13.3mA with POWR_ON/OFF, not enumerated
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    gh60    16MHz                                           25.8mA
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    gh60    16MHz               USB suspend w LED breathing 17.6-29.1mA
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    gh60    16MHz               USB suspend w/o LED         0.2mA(0.231-0.276mA)
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    Poker                                                    5.6mA
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    Poker                       USB suspend                  0.3mA(0.301mA)
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    gh60    16MHz               stock firmware by komar     26.8mA
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    HHKB pro2 Over All                                     139.4mA
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    HHKB pro2 Controller                                   115.1mA
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    HHKB pro1 Controller                                    25.9mA
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keyswitch power consumption:
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pro1: 45.1-26.4=18.7mA
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      37.3-18.1=19.2mA
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pro2: 32.1-18.9=13.2mA
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**Low Freq Crystal or Prescaler?
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No advantage of Low Freq Crystal against Prescaled.
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Clock routing
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X'tal --+---->Prescaler-------> System Clock
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        |
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        +---------------------> USB PLL
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Design Decision: Install 16MHz crystal on board with using clock rescaler.
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			@ -63,7 +63,7 @@ static matrix_row_t _matrix1[MATRIX_ROWS];
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    PORTE |= (1<<6);                    \
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} while (0)
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#define KEY_SELECT(ROW, COL)    (PORTB = (PORTB & 0xC0) |       \
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                                         (((COL) & 0x07)<<3) |    \
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                                         (((COL) & 0x07)<<3) |  \
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                                         ((ROW) & 0x07))
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#define KEY_ENABLE()            (PORTB &= ~(1<<6))
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#define KEY_UNABLE()            (PORTB |=  (1<<6))
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			@ -79,16 +79,20 @@ static matrix_row_t _matrix1[MATRIX_ROWS];
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// col:     PB3-5,6
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// key:     PD7(pull-uped)
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// prev:    PB7
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// power:   PD4(L:off/H:on)
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#define KEY_INIT()              do {    \
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    DDRB  = 0xFF;                       \
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    PORTB = 0x00;                       \
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    DDRD  &= ~0x80;                     \
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    PORTD |= 0x80;                      \
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    /* keyswitch board power on */      \
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    DDRD  |=  (1<<4);                   \
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    PORTD |=  (1<<4);                   \
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    KEY_UNABLE();                       \
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    KEY_PREV_OFF();                     \
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} while (0)
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#define KEY_SELECT(ROW, COL)    (PORTB = (PORTB & 0xC0) |       \
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                                         (((COL) & 0x07)<<3) |    \
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                                         (((COL) & 0x07)<<3) |  \
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                                         ((ROW) & 0x07))
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#define KEY_ENABLE()            (PORTB &= ~(1<<6))
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#define KEY_UNABLE()            (PORTB |=  (1<<6))
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			@ -97,6 +101,20 @@ static matrix_row_t _matrix1[MATRIX_ROWS];
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#define KEY_PREV_OFF()          (PORTB &= ~(1<<7))
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#define KEY_POWER_ON()
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#define KEY_POWER_OFF()
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/*
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#define KEY_POWER_ON()          do {    \
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    KEY_INIT();                         \
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    PORTD |=  (1<<4);                   \
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    _delay_ms(1);                       \
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} while (0)
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#define KEY_POWER_OFF()         do {    \
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    PORTD &= ~(1<<4);                   \
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    DDRB  &= ~0xFF;                     \
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    PORTB &= ~0xFF;                     \
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    DDRB  &= ~0x80;                     \
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    PORTB &= ~0x80;                     \
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} while (0)
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*/
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#elif defined(__AVR_ATmega328P__)
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			@ -195,16 +213,21 @@ uint8_t matrix_scan(void)
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            uint8_t last = TIMER_RAW;
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            KEY_ENABLE();
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            // Wait for KEY_STATE outputs its value.
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            // 1us was ok on one HHKB, but not worked on another.
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            // no   wait doesn't work on Teensy++ with pro(1us works)
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            // no   wait does    work on tmk PCB(8MHz) with pro2
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            // 1us  wait does    work on both of above
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            // 1us  wait doesn't work on tmk(16MHz)
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            // 5us  wait does    work on tmk(16MHz)
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            // 5us  wait does    work on tmk(16MHz/2)
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            // 5us  wait does    work on tmk(8MHz)
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            // 10us wait does    work on Teensy++ with pro
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            // 10us wait does    work on 328p+iwrap with pro
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            // 10us wait doesn't work on tmk PCB(8MHz) with pro2(very lagged scan)
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            _delay_us(1);
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//            _delay_us(10);
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            _delay_us(5);
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            if (KEY_STATE()) {
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                matrix[row] &= ~(1<<col);
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            } else {
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