Subversion Repositories FlightCtrl

#include <avr/boot.h>

#include <avr/io.h>

#include <avr/interrupt.h>

#include <util/delay.h>

#include "timer0.h"

#include "timer2.h"

#include "uart0.h"

#include "output.h"

#include "attitude.h"

#include "flight.h"

#include "controlMixer.h"

#include "rc.h"

#include "analog.h"

#include "configuration.h"

#include "twimaster.h"

#ifdef USE_NAVICTRL

#include "spi.h"

#endif

#ifdef USE_MK3MAG

#include "mk3mag.h"

#endif

#include "eeprom.h"

int16_t main(void) {

  uint16_t timer;

  // disable interrupts global

  cli();

  // analyze hardware environment

  CPUType = getCPUType();

  BoardRelease = getBoardRelease();

  // disable watchdog

  MCUSR &= ~(1 << WDRF);

  WDTCSR |= (1 << WDCE) | (1 << WDE);

  WDTCSR = 0;

  // PPM_in[CH_THROTTLE] = 0;

  // Why??? They are already initialized to 0.

  // stickPitch = stickRoll = stickYaw = 0;

  RED_OFF;

  // initalize modules

  output_init();

  timer0_init();

  usart0_Init();

  RC_Init();

  analog_init();

  I2C_init();

#ifdef USE_NAVICTRL

  SPI_MasterInit();

#endif

#ifdef USE_MK3MAG

  MK3MAG_Init();

#endif

  // enable interrupts global

  sei();

  // Parameter Set handling

  ParamSet_Init();

  // Wait for a short time (otherwise the RC channel check won't work below)

  // timer = SetDelay(500);

  // while(!CheckDelay(timer));

  // Instead, while away the time by flashing the 2 outputs:

  // First J16, then J17. Makes it easier to see which is which.

  timer = setDelay(500);

  OUTPUT_SET(0,1);

  GRN_OFF;

  RED_ON;

  while (!checkDelay(timer))

    ;

  OUTPUT_SET(0,0);

  timer = setDelay(500);

  while (!checkDelay(timer))

    ;

  OUTPUT_SET(1,1);

  RED_OFF;

  GRN_ON;

  timer = setDelay(500);

  while (!checkDelay(timer))

    ;

  timer = setDelay(500);

  while (!checkDelay(timer))

    ;

  OUTPUT_SET(1,0);

  beep(2000);

  timer = setDelay(4000);

  while (!checkDelay(timer))

    ;

  controlMixer_setNeutral();

  // Cal. attitude sensors and reset integrals.

  attitude_setNeutral();

  // Init flight parameters

  flight_setNeutral();

  // RED_OFF;

  beep(1000);

  timer2_init();

  I2CTimeout = 5000;

  while (1) {

    if (runFlightControl) { // control interval

      runFlightControl = 0; // reset Flag, is enabled every 2 ms by ISR of timer0

      if (!analogDataReady) {

        DebugOut.Digital[0] |= DEBUG_MAINLOOP_TIMER;

      } else {

        DebugOut.Digital[0] &= ~DEBUG_MAINLOOP_TIMER;

        J4HIGH;

        flight_control();

        J4LOW;

        // Allow Serial Data Transmit if motors must not updated or motors are not running

        if (!runFlightControl || !(MKFlags & MKFLAG_MOTOR_RUN)) {

          usart0_TransmitTxData();

        }

        usart0_ProcessRxData();

        if (checkDelay(timer)) {

          if (UBat <= UBAT_AT_5V) {

            // Do nothing. The voltage on the input side of the regulator is <5V;

            // we must be running off USB power. Keep it quiet.

          } else if (UBat < staticParams.LowVoltageWarning) {

            beepBatteryAlarm();

          }

#ifdef USE_NAVICTRL

          SPI_StartTransmitPacket();

          SendSPI = 4;

#endif

          timer = setDelay(20); // every 20 ms

        }

        output_update();

      }

#ifdef USE_NAVICTRL

      if(!SendSPI) {

        // SendSPI is decremented in timer0.c with a rate of 9.765 kHz.

        // within the SPI_TransmitByte() routine the value is set to 4.

        // I.e. the SPI_TransmitByte() is called at a rate of 9.765 kHz/4= 2441.25 Hz,

        // and therefore the time of transmission of a complete spi-packet (32 bytes) is 32*4/9.765 kHz = 13.1 ms.

        SPI_TransmitByte();

      }

#endif

    }

  }

  return (1);

}