Commit | Line | Data |
---|---|---|
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) | |
dc41eb22 | 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 | ||
70095677 PH |
18 | static inline void setup_hw(void) |
19 | { | |
20 | /* Turn off the 1/8 clock prescaler - now running at 16MHz*/ | |
21 | CLKPR = (1 << CLKPCE); | |
22 | CLKPR = 0; | |
23 | ||
24 | INPUT_PIN(PIN_SENSE); | |
25 | INPUT_PIN(PIN_BTN); | |
26 | OUTPUT_PIN(PIN_DRIVE); | |
27 | OUTPUT_PIN(PIN_LED); | |
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 */ | |
38 | TCCR0B = 0; /* Timer off */ | |
39 | TIMSK |= _BV(OCIE0A); /* Get a match interrupt */ | |
70095677 | 40 | |
dc41eb22 PH |
41 | #ifdef WITH_PWM |
42 | /* Timer 1 as PWM */ | |
43 | OCR1C = 14; | |
44 | OCR1B = 14; | |
45 | TCCR1 = 0x6; | |
46 | GTCCR |= _BV(PWM1B) | _BV(COM1B0); | |
47 | #endif | |
48 | ||
70095677 PH |
49 | } |
50 | ||
93cb14d4 PH |
51 | /* |
52 | * Function to trigger an oscilloscope on the drive pin | |
53 | * | |
54 | * Can be altered to use the LED. | |
55 | * | |
56 | */ | |
57 | static void __attribute__((unused)) trigger(void) | |
58 | { | |
59 | setpin(PIN_DRIVE, 1); | |
60 | _delay_us(4); | |
61 | setpin(PIN_DRIVE, 0); | |
62 | _delay_us(4); | |
63 | } | |
70095677 | 64 | |
93cb14d4 PH |
65 | /* |
66 | * Configuration for mm receiver code. | |
67 | */ | |
70095677 | 68 | |
93cb14d4 | 69 | #define MM_SENSE (!PINVAL(PIN_SENSE)) |
dc41eb22 | 70 | #define MM_TSTART ({TCNT0 = 0; GTCCR |= 1; OCR0A = 115; TCCR0B = 2;}) |
93cb14d4 | 71 | #define MM_TIMER_INT_VECT TIMER0_COMPA_vect |
70095677 | 72 | |
dc41eb22 | 73 | /* Costs 38 bytes program memory */ |
93cb14d4 | 74 | #define MM_FILTER_REPEATED |
dc41eb22 PH |
75 | #define USE_EEPROM_UPDATE |
76 | ||
77 | #ifdef USE_REGISTER_VARS | |
78 | uint8_t register drive_on asm("r8"); | |
79 | #endif | |
70095677 PH |
80 | |
81 | #endif |