trennfix/sw/config/trennfix_0.4.h

   1 #ifndef __HARDWARE_H
   2 #define __HARDWARE_H
   3
   4 #include <pin_magic.h>
   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)
  10 #define PIN_TRIGGER _PIN(PORTB, PB0)
  11 #define BTN_PRESSED (!PINVAL(PIN_BTN))
  12
  13 #define STOP_TIMER1 ({TCCR1 = 0; TCNT1 = 1;})
  14
  15 #define PWM_CYCLE 14
  16
  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         setpin(PIN_LED, 0);
  24         setpin(PIN_TRIGGER, 0);
  25         setpin(PIN_BTN, 1);   /* Need pullup              */
  26         INPUT_PIN(PIN_SENSE);
  27         INPUT_PIN(PIN_BTN);
  28         OUTPUT_PIN(PIN_DRIVE);
  29         OUTPUT_PIN(PIN_LED);
  30         OUTPUT_PIN(PIN_TRIGGER);
  31
  32         GIMSK |= _BV(PCIE);     /* Enable pin change interrupt for sense port */
  33         PCMSK |= _BV(PCINT4);    /* PB4, Rail sense input */
  34
  35         /* Change interrupt for button */
  36         PCMSK |= _BV(PCINT1);    /* PB1 */
  37
  38         /* Setup timer 0, used for mm_switch */
  39         TCCR0A = 0; /* Normal mode */
  40         TCCR0B = 2; /* Prescaler 8 */
  41
  42         TIMSK |= _BV(TOIE0);
  43         TCCR0B = 2;
  44
  45 #ifdef WITH_PWM
  46         /* Timer 1 as PWM */
  47         OCR1C = PWM_CYCLE;
  48         OCR1B = PWM_CYCLE;
  49         TCCR1 = 0x5;
  50
  51         GTCCR |= _BV(PWM1B) | _BV(COM1B0);
  52 #endif
  53
  54 }
  55
  56 /*
  57  * Function to trigger an oscilloscope on the drive pin
  58  *
  59  * Can be altered to use the LED.
  60  *
  61  */
  62 static inline void __attribute__((unused)) trigger(void)
  63 {
  64         setpin(PIN_TRIGGER, 1);
  65         setpin(PIN_TRIGGER, 0);
  66 }
  67
  68 static inline void __attribute__((unused)) trigger_on(void)
  69 {
  70         setpin(PIN_TRIGGER, 1);
  71 }
  72
  73 static inline void __attribute__((unused)) trigger_off(void)
  74 {
  75         setpin(PIN_TRIGGER, 0);
  76 }
  77
  78 /*
  79  * Configuration for mm receiver code.
  80  */
  81 #define MM_SENSE (PINVAL(PIN_SENSE))
  82 #define MM_TIMER_INT_VECT TIMER0_OVF_vect
  83
  84 #define MM_TSTART {                                                     \
  85                 GTCCR  |= _BV(TSM) | _BV(PSR0);                         \
  86                 TCNT0   = 0;                                            \
  87                 GTCCR  &= ~_BV(TSM);                                    \
  88         }
  89
  90 #define MM_RESETFLAG  TIFR   |= _BV(OVF0)
  91 //#define MM_USE_QUEUE
  92 #define MM_QUEUE_DEPTH 8
  93 #define MM_USE_CALLBACK
  94
  95 #ifdef USE_REGISTER_VARS
  96 uint8_t register drive_on asm("r12");
  97 uint8_t register slope asm("r13");
  98 #endif
  99
 100 #endif