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Add keyboard_setup() and matrix_setup()
[qmk_firmware.git] / tmk_core / common / avr / suspend.c
1 #include <stdbool.h>
2 #include <avr/sleep.h>
3 #include <avr/wdt.h>
4 #include <avr/interrupt.h>
5 #include "matrix.h"
6 #include "action.h"
7 #include "backlight.h"
8 #include "suspend_avr.h"
9 #include "suspend.h"
10 #include "timer.h"
11 #ifdef PROTOCOL_LUFA
12 #include "lufa.h"
13 #endif
14
15
16 #define wdt_intr_enable(value)   \
17 __asm__ __volatile__ (  \
18     "in __tmp_reg__,__SREG__" "\n\t"    \
19     "cli" "\n\t"    \
20     "wdr" "\n\t"    \
21     "sts %0,%1" "\n\t"  \
22     "out __SREG__,__tmp_reg__" "\n\t"   \
23     "sts %0,%2" "\n\t" \
24     : /* no outputs */  \
25     : "M" (_SFR_MEM_ADDR(_WD_CONTROL_REG)), \
26     "r" (_BV(_WD_CHANGE_BIT) | _BV(WDE)), \
27     "r" ((uint8_t) ((value & 0x08 ? _WD_PS3_MASK : 0x00) | \
28         _BV(WDIE) | (value & 0x07)) ) \
29     : "r0"  \
30 )
31
32
33 void suspend_idle(uint8_t time)
34 {
35     cli();
36     set_sleep_mode(SLEEP_MODE_IDLE);
37     sleep_enable();
38     sei();
39     sleep_cpu();
40     sleep_disable();
41 }
42
43 /* Power down MCU with watchdog timer
44  * wdto: watchdog timer timeout defined in <avr/wdt.h>
45  *          WDTO_15MS
46  *          WDTO_30MS
47  *          WDTO_60MS
48  *          WDTO_120MS
49  *          WDTO_250MS
50  *          WDTO_500MS
51  *          WDTO_1S
52  *          WDTO_2S
53  *          WDTO_4S
54  *          WDTO_8S
55  */
56 static uint8_t wdt_timeout = 0;
57 static void power_down(uint8_t wdto)
58 {
59 #ifdef PROTOCOL_LUFA
60     if (USB_DeviceState == DEVICE_STATE_Configured) return;
61 #endif
62     wdt_timeout = wdto;
63
64     // Watchdog Interrupt Mode
65     wdt_intr_enable(wdto);
66
67     // TODO: more power saving
68     // See PicoPower application note
69     // - I/O port input with pullup
70     // - prescale clock
71     // - BOD disable
72     // - Power Reduction Register PRR
73     set_sleep_mode(SLEEP_MODE_PWR_DOWN);
74     sleep_enable();
75     sei();
76     sleep_cpu();
77     sleep_disable();
78
79     // Disable watchdog after sleep
80     wdt_disable();
81 }
82
83 void suspend_power_down(void)
84 {
85     power_down(WDTO_15MS);
86 }
87
88 __attribute__ ((weak)) void matrix_power_up(void) {}
89 __attribute__ ((weak)) void matrix_power_down(void) {}
90 bool suspend_wakeup_condition(void)
91 {
92     matrix_power_up();
93     matrix_scan();
94     matrix_power_down();
95     for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
96         if (matrix_get_row(r)) return true;
97     }
98     return false;
99 }
100
101 // run immediately after wakeup
102 void suspend_wakeup_init(void)
103 {
104     // clear keyboard state
105     clear_keyboard();
106 #ifdef BACKLIGHT_ENABLE
107     backlight_init();
108 #endif
109 }
110
111 #ifndef NO_SUSPEND_POWER_DOWN
112 /* watchdog timeout */
113 ISR(WDT_vect)
114 {
115     // compensate timer for sleep
116     switch (wdt_timeout) {
117         case WDTO_15MS:
118             timer_count += 15 + 2;  // WDTO_15MS + 2(from observation)
119             break;
120         default:
121             ;
122     }
123 }
124 #endif