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70095677 PH |
1 | #ifndef __HARDWARE_H |
2 | #define __HARDWARE_H | |
3 | ||
93cb14d4 | 4 | #include <pin_magic.h> |
70095677 PH |
5 | |
6 | #define PIN_LED _PIN(PORTB, PORTB2) | |
7 | #define PIN_SENSE _PIN(PORTB, PORTB4) | |
8 | #define PIN_DRIVE _PIN(PORTB, PORTB3) | |
9 | #define PIN_BTN _PIN(PORTB, PB1) | |
d0047978 | 10 | #define PIN_TRIGGER _PIN(PORTB, PB0) |
70095677 PH |
11 | #define BTN_PRESSED (!PINVAL(PIN_BTN)) |
12 | ||
70095677 PH |
13 | #define STOP_TIMER1 ({TCCR1 = 0; TCNT1 = 1;}) |
14 | ||
d0047978 PH |
15 | #define PWM_CYCLE 21 |
16 | ||
70095677 PH |
17 | static inline void setup_hw(void) |
18 | { | |
19 | /* Turn off the 1/8 clock prescaler - now running at 16MHz*/ | |
20 | CLKPR = (1 << CLKPCE); | |
21 | CLKPR = 0; | |
22 | ||
23 | INPUT_PIN(PIN_SENSE); | |
24 | INPUT_PIN(PIN_BTN); | |
25 | OUTPUT_PIN(PIN_DRIVE); | |
26 | OUTPUT_PIN(PIN_LED); | |
d0047978 | 27 | OUTPUT_PIN(PIN_TRIGGER); |
70095677 PH |
28 | setpin(PIN_BTN, 1); /* Need pullup */ |
29 | ||
30 | GIMSK |= _BV(PCIE); /* Enable pin change interrupt for sense port */ | |
31 | PCMSK |= _BV(PCINT4); /* PB4, Rail sense input */ | |
32 | ||
33 | /* Change interrupt for button */ | |
34 | PCMSK |= _BV(PCINT1); /* PB1 */ | |
35 | ||
36 | /* Setup timer 0, used for mm_switch */ | |
37 | TCCR0A = 0; /* Normal mode */ | |
d0047978 | 38 | TCCR0B = 2; /* Prescaler 8 */ |
70095677 | 39 | TIMSK |= _BV(OCIE0A); /* Get a match interrupt */ |
d0047978 | 40 | OCR0A = 100; TCCR0B = 2; |
70095677 | 41 | |
dc41eb22 PH |
42 | #ifdef WITH_PWM |
43 | /* Timer 1 as PWM */ | |
d0047978 PH |
44 | OCR1C = PWM_CYCLE; |
45 | OCR1B = PWM_CYCLE; | |
46 | TCCR1 = 0x5; | |
47 | ||
dc41eb22 PH |
48 | GTCCR |= _BV(PWM1B) | _BV(COM1B0); |
49 | #endif | |
50 | ||
70095677 PH |
51 | } |
52 | ||
93cb14d4 PH |
53 | /* |
54 | * Function to trigger an oscilloscope on the drive pin | |
55 | * | |
56 | * Can be altered to use the LED. | |
57 | * | |
58 | */ | |
d0047978 PH |
59 | static inline void __attribute__((unused)) trigger(void) |
60 | { | |
61 | setpin(PIN_TRIGGER, 1); | |
62 | setpin(PIN_TRIGGER, 0); | |
63 | } | |
64 | ||
65 | ||
66 | static inline void __attribute__((unused)) trigger_on(void) | |
67 | { | |
68 | setpin(PIN_TRIGGER, 1); | |
69 | } | |
70 | ||
71 | static inline void __attribute__((unused)) trigger_off(void) | |
93cb14d4 | 72 | { |
d0047978 | 73 | setpin(PIN_TRIGGER, 0); |
93cb14d4 | 74 | } |
70095677 | 75 | |
93cb14d4 PH |
76 | /* |
77 | * Configuration for mm receiver code. | |
78 | */ | |
93cb14d4 | 79 | #define MM_SENSE (!PINVAL(PIN_SENSE)) |
93cb14d4 | 80 | #define MM_TIMER_INT_VECT TIMER0_COMPA_vect |
70095677 | 81 | |
d0047978 PH |
82 | #define MM_TSTART { \ |
83 | GTCCR |= _BV(TSM) | _BV(PSR0); \ | |
84 | TCNT0 = 0; \ | |
85 | TIFR |= _BV(OCF0A); \ | |
86 | GTCCR &= ~_BV(TSM); \ | |
87 | } | |
88 | ||
dc41eb22 PH |
89 | |
90 | #ifdef USE_REGISTER_VARS | |
91 | uint8_t register drive_on asm("r8"); | |
92 | #endif | |
70095677 PH |
93 | |
94 | #endif |