//===ISR part===
static void dma_isr ( void * context2, alt_u32 irqnum2 )
{
    asm("nop");
    //set flag
    dmaf=1;
    /* Clear any pending interrupts and the DONE flag */
    IOWR_ALTERA_AVALON_DMA_STATUS (DMA_BASE, 0);
    
}
//===END ISR part===


//---MAIN---
int main (void)
{
    asm ("nop");
    //
    unsigned char i=0;
    // initial values
    cnt_val=0;
    ch=0;
    txf=0;
    dmaf=0;
    //
    for (i=0;i<12;i++)
    {
        inbuffer[i]=0;
        outbuffer[i]=i+1;
    }
    //
    //
    asm("nop");
    //register DMA ISR
    alt_irq_register(DMA_IRQ,(void*)DMA_BASE,dma_isr);
    asm("nop");
    asm("nop");
    //
    //DMA_Init
    /* Clear any pending interrupts and the DONE flag */
    IOWR_ALTERA_AVALON_DMA_STATUS (DMA_BASE, 0);
    asm("nop");
    asm("nop");
    //clear control register
    IOWR_ALTERA_AVALON_DMA_CONTROL (DMA_BASE, 0);
    asm("nop");
    asm("nop");
    /* Halt any current transactions (reset the device) */
    IOWR_ALTERA_AVALON_DMA_CONTROL (DMA_BASE, ALTERA_AVALON_DMA_CONTROL_SOFTWARERESET_MSK);    
    IOWR_ALTERA_AVALON_DMA_CONTROL (DMA_BASE, ALTERA_AVALON_DMA_CONTROL_SOFTWARERESET_MSK);
    asm("nop");
    asm("nop");
    asm("nop");
    //asm("nop");
    //set initial values for tranmit
    //byte orientating transfer
    alt_u32 control=0;
    control |= ALTERA_AVALON_DMA_CONTROL_BYTE_MSK;//byte transfer
    control |= ALTERA_AVALON_DMA_CONTROL_I_EN_MSK;//enable int
    control |= ALTERA_AVALON_DMA_CONTROL_LEEN_MSK;//enable end of transaction by reacing Len 0
    //1st try with mem massives -> no uart
    //control |= ALTERA_AVALON_DMA_CONTROL_RCON_MSK;//read from constant mem - we use uart, so mem == const
    //store control
    IOWR_ALTERA_AVALON_DMA_CONTROL (DMA_BASE, control);
    asm("nop");
    asm("nop");    
    //**
    //DMA_start((int)&inbuffer[0],(int)&outbuffer[0],10);
    //**
    waddr = (int)&inbuffer[0];
    raddr = (int)&outbuffer[0];
    len=10;
    //alt_u32 control;
    control=0;
    //wrire read addr
    IOWR_ALTERA_AVALON_DMA_RADDRESS(DMA_BASE, raddr);
    asm("nop");
    asm("nop");
    //wrire write addr
    IOWR_ALTERA_AVALON_DMA_WADDRESS(DMA_BASE, waddr);
    asm("nop");
    asm("nop");
    //write length
    IOWR_ALTERA_AVALON_DMA_LENGTH(DMA_BASE,len);
    asm("nop");
    asm("nop");
    //start transfer
    control = IORD_ALTERA_AVALON_DMA_CONTROL (DMA_BASE);
    control |= ALTERA_AVALON_DMA_CONTROL_GO_MSK;
    IOWR_ALTERA_AVALON_DMA_CONTROL (DMA_BASE, control);
    //
    dmaf=0;
    asm("nop");
    //**
  while (1)
  {
    /***/
wlabel:
    asm("nop");
    //
    if (dmaf==0) goto wlabel;
    
    asm("nop");
    IOWR_ALTERA_AVALON_PIO_DATA(SEVEN_SEGMENT_PORT_BASE,segments[inbuffer[0]] );        
        asm("nop");
    while (1);
    /***/
  }
  
  return 0;
}

    while ((IORD_ALTERA_AVALON_DMA_STATUS (DMA_0_BASE) & ALTERA_AVALON_DMA_STATUS_BUSY_MSK)); // ждем пока все не передаст

//
    unsigned char i=0;
    for (i=0;i<16;i++)
    {
        inbuffer[i]=0;
        outbuffer[i]=i+1;
    }
    //
    waddr = (alt_u32)&inbuffer[0];
    raddr = (alt_u32)&outbuffer[0];
    buff_length = 8;
    //
    IOWR_ALTERA_AVALON_DMA_STATUS(DMA_BASE, 0); //очистка статуса
    IOWR_ALTERA_AVALON_DMA_CONTROL(DMA_BASE,0); //очистка регистра управления
    //
    IOWR_ALTERA_AVALON_DMA_RADDRESS(DMA_BASE, raddr); //адрес передатчика
    IOWR_ALTERA_AVALON_DMA_WADDRESS(DMA_BASE, waddr); //адрес приемника
    //
    IOWR_ALTERA_AVALON_DMA_LENGTH(DMA_BASE, buff_length); //длина в байтах
    dma_length=IORD_ALTERA_AVALON_DMA_LENGTH(DMA_BASE);
    //
    IOWR_ALTERA_AVALON_DMA_CONTROL(DMA_BASE,
    ALTERA_AVALON_DMA_CONTROL_BYTE_MSK|
    ALTERA_AVALON_DMA_CONTROL_GO_MSK|
    ALTERA_AVALON_DMA_CONTROL_LEEN_MSK);
    
    while ( IORD_ALTERA_AVALON_DMA_STATUS(DMA_BASE) & (ALTERA_AVALON_DMA_STATUS_BUSY_MSK))
    { // ждем пока все не передаст
        asm volatile ("nop");
    }
    //отображение
    printf("!!!");
    printf("inbuffer= ");
    for (i=0; i<buff_length; i++)
    {
        printf("%i ", inbuffer[i]);
        asm volatile ("nop");
    }
    printf("!!!");
    printf("outbuffer= ");
    for (i=0; i<buff_length; i++)
    {
        printf("%i ", outbuffer[i]);
        asm volatile ("nop");
    }
    printf("!!!");
    while (1);

        inbuffer[i]=0;
        outbuffer[i]=i+1;

//---DATA Declaration    
    volatile alt_u8 inbuffer[16];
    volatile alt_u8 outbuffer[16];
    volatile alt_u32 waddr=0;
    volatile alt_u32 raddr=0;
    volatile alt_u32 buff_length=0;
    volatile alt_u32 dma_length=0;
//---END DATA Declaration
//

//---MAIN---
int main (void)
{
....

for (i=0;i<16;i++)
    {
        inbuffer[i]=0;
        outbuffer[i]=i+1;
    }
    //*******
    alt_dcache_flush_all();
    //*******
    waddr = (alt_u32)&inbuffer[0];
    raddr = (alt_u32)&outbuffer[0];
    buff_length = 8;
    //

while ( IORD_ALTERA_AVALON_DMA_STATUS(DMA_BASE) & (ALTERA_AVALON_DMA_STATUS_BUSY_MSK))
    { // ждем пока все не передаст
        asm volatile ("nop");
    }
    //flush
    //alt_dcache_flush_all();
    //отображение
    printf("!!!");