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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) | |
7c08d02a PH |
8 | //#define PIN_DRIVE _PIN(PORTB, PORTB3) |
9 | #define PIN_DRIVE PIN_LED | |
70095677 PH |
10 | #define PIN_BTN _PIN(PORTB, PB1) |
11 | ||
70095677 PH |
12 | #define BTN_PRESSED (!PINVAL(PIN_BTN)) |
13 | ||
14 | #define START_TIMER0 ({TCNT0 = 0; TCCR0B = 2;}) | |
15 | #define START_TIMER1 ({TCNT1 = 1; TCCR1 = 7; GTCCR |= 2;}) | |
16 | #define STOP_TIMER1 ({TCCR1 = 0; TCNT1 = 1;}) | |
17 | ||
18 | ||
93cb14d4 PH |
19 | /* |
20 | * Various sinks for valuable program memory | |
21 | * | |
22 | */ | |
23 | // #define USE_EEPROM_UPDATE /* 14 bytes */ | |
24 | //#define INTERPRET_DRIVE_COMMANDS | |
25 | #define INTERPRET_DRIVE_SIMPLE | |
26 | ||
70095677 PH |
27 | static inline void setup_hw(void) |
28 | { | |
29 | /* Turn off the 1/8 clock prescaler - now running at 16MHz*/ | |
30 | CLKPR = (1 << CLKPCE); | |
31 | CLKPR = 0; | |
32 | ||
33 | INPUT_PIN(PIN_SENSE); | |
34 | INPUT_PIN(PIN_BTN); | |
35 | OUTPUT_PIN(PIN_DRIVE); | |
36 | OUTPUT_PIN(PIN_LED); | |
37 | setpin(PIN_BTN, 1); /* Need pullup */ | |
38 | ||
39 | GIMSK |= _BV(PCIE); /* Enable pin change interrupt for sense port */ | |
40 | PCMSK |= _BV(PCINT4); /* PB4, Rail sense input */ | |
41 | ||
42 | /* Change interrupt for button */ | |
43 | PCMSK |= _BV(PCINT1); /* PB1 */ | |
44 | ||
45 | /* Setup timer 0, used for mm_switch */ | |
46 | TCCR0A = 0; /* Normal mode */ | |
47 | TCCR0B = 0; /* Timer off */ | |
48 | TIMSK |= _BV(OCIE0A); /* Get a match interrupt */ | |
49 | ||
50 | /* We need 13 + 45,5 us delay, That's 464 clocks @8MHz*/ | |
51 | //OCR0A = 91; /* Prescaler 8 is used */ | |
52 | ||
53 | /* Timer 1 for timeout */ | |
54 | /* We set it to 1024us by prescaler 64 and running full 256 */ | |
55 | // TCCR1 = 7; | |
56 | // TIMSK |= _BV(TOIE1); /* Overflow interrupt */ | |
57 | } | |
58 | ||
93cb14d4 PH |
59 | /* |
60 | * Function to trigger an oscilloscope on the drive pin | |
61 | * | |
62 | * Can be altered to use the LED. | |
63 | * | |
64 | */ | |
65 | static void __attribute__((unused)) trigger(void) | |
66 | { | |
67 | setpin(PIN_DRIVE, 1); | |
68 | _delay_us(4); | |
69 | setpin(PIN_DRIVE, 0); | |
70 | _delay_us(4); | |
71 | } | |
70095677 | 72 | |
93cb14d4 PH |
73 | /* |
74 | * Configuration for mm receiver code. | |
75 | */ | |
70095677 | 76 | |
93cb14d4 | 77 | #define MM_SENSE (!PINVAL(PIN_SENSE)) |
7c08d02a PH |
78 | #define MM_TSTART_FAST ({TCNT0 = 0; GTCCR |= 1; OCR0A = 120; TCCR0B = 2;}) |
79 | #define MM_TSTART_SLOW ({TCNT0 = 0; GTCCR |= 1; OCR0A = 230; TCCR0B = 2;}) | |
93cb14d4 PH |
80 | #define MM_TSTOP ({TCCR0B = 0;}) |
81 | #define MM_TIMER_INT_VECT TIMER0_COMPA_vect | |
70095677 | 82 | |
93cb14d4 PH |
83 | /* Costs 63 bytes program memory */ |
84 | #define MM_FILTER_REPEATED | |
70095677 | 85 | |
93cb14d4 | 86 | #define USE_EEPROM_UPDATE |
70095677 | 87 | #endif |