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#include "main.h"
#include "spectrum.h"
#include "heli.h"
volatile unsigned int CountMilliseconds = 0;
volatile static unsigned int tim_main;
volatile unsigned char UpdateMotor = 0;
volatile unsigned int cntKompass = 0;
volatile unsigned int beeptime = 0;
volatile unsigned char SendSPI = 0;
unsigned int BeepMuster = 0xffff;
volatile int16_t ServoNickValue = 0;
volatile int16_t ServoRollValue = 0;
enum {
STOP = 0,
CK = 1,
CK8 = 2,
CK64 = 3,
CK256 = 4,
CK1024 = 5,
T0_FALLING_EDGE = 6,
T0_RISING_EDGE = 7
};
SIGNAL (SIG_OVERFLOW0) // 9,7kHz
{
static unsigned char cnt_1ms = 1,cnt = 0;
unsigned char pieper_ein = 0;
if(SendSPI) SendSPI--;
if(SpektrumTimer) SpektrumTimer--;
if(!cnt--)
{
cnt = 9;
cnt_1ms++;
cnt_1ms %= 2;
if(!cnt_1ms) UpdateMotor = 1;
CountMilliseconds++;
}
if(beeptime >= 1)
{
beeptime--;
if(beeptime & BeepMuster)
{
pieper_ein = 1;
}
else pieper_ein = 0;
}
else
{
pieper_ein = 0;
BeepMuster = 0xffff;
}
if(pieper_ein)
{
if(PlatinenVersion == 10) PORTD |= (1<<2); // Speaker an PORTD.2
else PORTC |= (1<<7); // Speaker an PORTC.7
}
else
{
if(PlatinenVersion == 10) PORTD &= ~(1<<2);
else PORTC &= ~(1<<7);
}
if(EE_Parameter.GlobalConfig & CFG_KOMPASS_AKTIV)
{
if(PINC & 0x10)
{
cntKompass++;
}
else
{
if((cntKompass) && (cntKompass < 362))
{
cntKompass += cntKompass / 41;
if(cntKompass > 10) KompassValue = cntKompass - 10; else KompassValue = 0;
}
// if(cntKompass < 10) cntKompass =r 10;
// KompassValue = (unsigned long)((unsigned long)(cntKompass-10)*720L + 1L) / 703L;
KompassRichtung = ((540 + KompassValue - KompassStartwert) % 360) - 180;
cntKompass = 0;
}
}
}
// -----------------------------------------------------------------------
unsigned int SetDelay (unsigned int t)
{
// TIMSK0 &= ~_BV(TOIE0);
return(CountMilliseconds + t + 1);
// TIMSK0 |= _BV(TOIE0);
}
// -----------------------------------------------------------------------
char CheckDelay(unsigned int t)
{
// TIMSK0 &= ~_BV(TOIE0);
return(((t - CountMilliseconds) & 0x8000) >> 9);
// TIMSK0 |= _BV(TOIE0);
}
// -----------------------------------------------------------------------
void Delay_ms(unsigned int w)
{
unsigned int akt;
akt = SetDelay(w);
while (!CheckDelay(akt));
}
void Delay_ms_Mess(unsigned int w)
{
unsigned int akt;
akt = SetDelay(w);
while (!CheckDelay(akt)) if(AdReady) {AdReady = 0; ANALOG_ON;}
}
/*****************************************************/
/* Initialize Timer 2 */
/*****************************************************/
// The timer 2 is used to generate the PWM at PD7 (J7)
// to control a camera servo for nick compensation.
void TIMER2_Init(void)
{
uint8_t sreg = SREG;
// disable all interrupts before reconfiguration
cli();
PORTD &= ~(1<<PORTD7); // set PD7 to low
DDRC |= (1<<DDC6); // set PC6 as output (Reset for HEF4017)
HEF4017R_ON;
// Timer/Counter 2 Control Register A
// Timer Mode is FastPWM with timer reload at OCR2A (Bits: WGM22 = 1, WGM21 = 1, WGM20 = 1)
// PD7: Normal port operation, OC2A disconnected, (Bits: COM2A1 = 0, COM2A0 = 0)
// PD6: Normal port operation, OC2B disconnected, (Bits: COM2B1 = 0, COM2B0 = 0)
TCCR2A &= ~((1<<COM2A1)|(1<<COM2A0)|(1<<COM2B1)|(1<<COM2B0));
TCCR2A |= (1<<WGM21)|(1<<WGM20);
// Timer/Counter 2 Control Register B
// Set clock divider for timer 2 to SYSKLOCK/32 = 20MHz / 32 = 625 kHz
// The timer increments from 0x00 to 0xFF with an update rate of 625 kHz or 1.6 us
// hence the timer overflow interrupt frequency is 625 kHz / 256 = 2.44 kHz or 0.4096 ms
// divider 32 (Bits: CS022 = 0, CS21 = 1, CS20 = 1)
TCCR2B &= ~((1<<FOC2A)|(1<<FOC2B)|(1<<CS22));
TCCR2B |= (1<<CS21)|(1<<CS20)|(1<<WGM22);
// Initialize the Timer/Counter 2 Register
TCNT2 = 0;
// Initialize the Output Compare Register A used for PWM generation on port PD7.
OCR2A = 255;
TCCR2A |= (1<<COM2A1); // set or clear at compare match depends on value of COM2A0
// Timer/Counter 2 Interrupt Mask Register
// Enable timer output compare match A Interrupt only
TIMSK2 &= ~((1<<OCIE2B)|(1<<TOIE2));
TIMSK2 |= (1<<OCIE2A);
SREG = sreg;
}
//----------------------------
void Timer_Init(void)
{
tim_main = SetDelay(10);
TCCR0B = CK8;
TCCR0A = (1<<COM0A1)|(1<<COM0B1)|3;//fast PWM
OCR0A = 0;
OCR0B = 120;
TCNT0 = (unsigned char)-TIMER_RELOAD_VALUE; // reload
//OCR1 = 0x00;
TIMSK0 |= _BV(TOIE0);
}
/*****************************************************/
/* Control Servo Position */
/*****************************************************/
ISR(TIMER2_COMPA_vect)
{
// frame len 22.5 ms = 14063 * 1.6 us
// stop pulse: 0.3 ms = 188 * 1.6 us
// min servo pulse: 0.6 ms = 375 * 1.6 us
// max servo pulse: 2.4 ms = 1500 * 1.6 us
// resolution: 1500 - 375 = 1125 steps
#define IRS_RUNTIME 127
#define PPM_STOPPULSE 188
// #define PPM_FRAMELEN (14063
#define PPM_FRAMELEN (1757 * EE_Parameter.ServoNickRefresh)
#define MINSERVOPULSE 375
#define MAXSERVOPULSE 1500
#define SERVORANGE (MAXSERVOPULSE - MINSERVOPULSE)
static uint8_t PulseOutput = 0;
static uint16_t RemainingPulse = 0;
static uint16_t ServoFrameTime = 0;
static uint8_t ServoIndex = 0;
#define MULTIPLYER 4
static int16_t ServoNickOffset = (255 / 2) * MULTIPLYER; // initial value near center positon
static int16_t ServoRollOffset = (255 / 2) * MULTIPLYER; // initial value near center positon
//-----------------------------------------------------
// PPM state machine, onboard demultiplexed by HEF4017
//-----------------------------------------------------
if(!PulseOutput) // pulse output complete
{
if(TCCR2A & (1<<COM2A0)) // we had a low pulse
{
TCCR2A &= ~(1<<COM2A0);// make a high pulse
if(ServoIndex == 0) // if we are at the sync gap
{
RemainingPulse = PPM_FRAMELEN - ServoFrameTime; // generate sync gap by filling time to full frame time
ServoFrameTime = 0; // reset servo frame time
HEF4017R_ON; // enable HEF4017 reset
}
else // servo channels
{
RemainingPulse = MINSERVOPULSE + SERVORANGE/2; // center position ~ 1.5ms
RemainingPulse += 2 * servoValues[ServoIndex - 1]; // add channel value, factor of 2 because timer 1 increments 3.2µs
// range servo pulse width
if(RemainingPulse > MAXSERVOPULSE ) RemainingPulse = MAXSERVOPULSE; // upper servo pulse limit
else if(RemainingPulse < MINSERVOPULSE ) RemainingPulse = MINSERVOPULSE; // lower servo pulse limit
// substract stop pulse width
RemainingPulse -= PPM_STOPPULSE;
// accumulate time for correct sync gap
ServoFrameTime += RemainingPulse;
}
}
else // we had a high pulse
{
TCCR2A |= (1<<COM2A0); // make a low pulse
// set pulsewidth to stop pulse width
RemainingPulse = PPM_STOPPULSE;
// accumulate time for correct sync gap
ServoFrameTime += RemainingPulse;
HEF4017R_OFF; // disable HEF4017 reset
ServoIndex++; // change to next servo channel
if(ServoIndex > EE_Parameter.ServoNickRefresh) ServoIndex = 0; // reset to the sync gap
}
// set pulse output active
PulseOutput = 1;
}
// General pulse output generator
if(RemainingPulse > (255 + IRS_RUNTIME))
{
OCR2A = 255;
RemainingPulse -= 255;
}
else
{
if(RemainingPulse > 255) // this is the 2nd last part
{
if((RemainingPulse - 255) < IRS_RUNTIME)
{
OCR2A = 255 - IRS_RUNTIME;
RemainingPulse -= 255 - IRS_RUNTIME;
}
else // last part > ISR_RUNTIME
{
OCR2A = 255;
RemainingPulse -= 255;
}
}
else // this is the last part
{
OCR2A = RemainingPulse;
RemainingPulse = 0;
PulseOutput = 0; // trigger to stop pulse
}
} // EOF general pulse output generator
}