#include "sys/alt_irq.h"
#include "system.h"

#include "altera_avalon_pio_regs.h"
#include "altera_avalon_timer_regs.h"

#include "pwm_avalon_interface_regs.h"
#include "pwm_avalon_interface.h"
#include "pwm_avalon_interface.c"

//********************** Global Variables ***********************************************
volatile unsigned short int led_dir;
volatile int return_code;
volatile unsigned char i = 0;
volatile unsigned int duty_cycle[8] = {499999, 150000, 60000, 10000, 5000, 2500, 800, 1};

//********************** ISR functions **************************************************
static void timer_isr (void * context)
{ volatile unsigned char* led_ptr;
  volatile unsigned char* dir_ptr;

  IOWR_ALTERA_AVALON_TIMER_STATUS(TIMER_BASE, 0);

  dir_ptr = (volatile unsigned char*)context;
  led_ptr = dir_ptr + 1;

  return_code = altera_avalon_pwm_change_duty_cycle(LED_PWM_BASE, duty_cycle[i]);
  IOWR_ALTERA_AVALON_PIO_DATA(LED_PIO_BASE, *led_ptr);

  if(*dir_ptr)
    { *led_ptr >>= 1;
      i--;
    }
  else
    { *led_ptr <<= 1;
      i++;
    }
  if(*led_ptr & 0x81)
    *dir_ptr ^= 0x1;

}

//********************** Auxiliary functions ********************************************
void check_return_code(unsigned int address, int return_code)
{ if(return_code != ALTERA_AVALON_PWM_OK)
;
//          print_error(address, return_code);
}

//********************* Main function ***************************************************
int main (void)
{ void* led_dir_ptr = (void*)&led_dir;

  led_dir = 0x0100;

  //Timer Initialization
  IOWR_ALTERA_AVALON_TIMER_CONTROL(TIMER_BASE, 0x0003);
  IOWR_ALTERA_AVALON_TIMER_STATUS(TIMER_BASE, 0);

  IOWR_ALTERA_AVALON_TIMER_PERIODL(TIMER_BASE, 0x9f00);
  IOWR_ALTERA_AVALON_TIMER_PERIODH(TIMER_BASE, 0x0055);//0x0014);

  //Register ISR for timer event
  alt_ic_isr_register(TIMER_IRQ_INTERRUPT_CONTROLLER_ID, TIMER_IRQ, timer_isr, led_dir_ptr, 0);

  //Initialize PWM and Check Return Code
  return_code = altera_avalon_pwm_init(LED_PWM_BASE, 500000, 1);
  check_return_code(LED_PWM_BASE, return_code);

  //Enable PWM and Check Return Code
  return_code = altera_avalon_pwm_enable(LED_PWM_BASE);
  check_return_code(LED_PWM_BASE, return_code);

  //Start timer and begin the work
  IOWR_ALTERA_AVALON_TIMER_CONTROL(TIMER_BASE, 0x0007);

//  IOWR_ALTERA_AVALON_PIO_DATA(LED_PIO_BASE, led);

  while (1)
   check_return_code(LED_PWM_BASE, return_code);

}

static void timer_isr (void * context)

alt_ic_isr_register(TIMER_IRQ_INTERRUPT_CONTROLLER_ID, TIMER_IRQ, timer_isr, led_dir_ptr, 0);

gun.c:6: first defined here

top.c:31: warning: implicit declaration of function 'Irq_init'

unsigned char start=0;

extern unsigned char start;

#include "xxx.h"
if(start)
{
}

#ifndef __HEADER_H__
#define __HEADER_H__ 1
.
.
. /* всякие декларации */
.
#endif

#ifndef GLOBAL_H_
#define GLOBAL_H_
......
#endif /* GLOBAL_H_ */

#ifndef XXX_H_
#define XXX_H_
...
...
...
#endif /*XXX_H_*/

%QUARTUS_ROOTDIR%\bin\cygwin\bin\bash.exe

"%QUARTUS_ROOTDIR%\bin\cygwin\bin\bash.exe" --rcfile "%SOPC_KIT_NIOS2%\nios2_sdk_shell_bashrc"

%QUARTUS_ROOTDIR12%\bin\cygwin\bin\bash.exe

"%QUARTUS_ROOTDIR12%\bin\cygwin\bin\bash.exe" --rcfile "/cygdrive/c/altera/12.1/nios2eds/qpsk"

#!/bin/sh

cd e:\out
# Creating .flash file for the FPGA configuration
sof2flash --epcs --input=qpsk.sof --output=qpsk_hw.flash  --verbose

#Creating .flash file for the NIOS project
elf2flash --input=qpsk_v4.elf --output=qpsk_sw.flash --epcs --after=qpsk_hw.flash --verbose

#Creating .hex file for the project
nios2-elf-objcopy -I srec -O ihex qpsk_sw.flash  qpsk_sw.hex --verbose

if [ -n "$*" ]; then
    exec $@
else
    echo "------------------------------------------------"
    echo "Altera Nios2 Command Shell [GCC 4]"
    echo
    echo "Version 12.1, Build 177"
    echo "------------------------------------------------"

    # Use bash --norc to get a clean shell
    # Use bash --rcfile <bashrc> to for a user rcfile
    # Default to using ~/.bashrc
    bash ./qpsk.sh
fi