upp问题

tulipyyf · 发表于 2014-12-22 14:33:24

下面的任务，只能在第一次执行UPP时成功，后面的均不成功，请创龙工程师看看为什么？
Void UPP_TASK(Void)
{

int i,j,k,target_int_count=2;
char ch[2];

upp_interrupt_count  = 0;
upp_error_count = 0;

UARTPuts("\tResetting uPP buffers...\r\n",-2);
// Initialize data buffers
for (i = 0; i < upp_frame_size; i++)
{
   upp_buffer_b =i;
   upp_buffer_a = 0xDEAD;
}

//for(i=0;i<1024;i++)
// temp=0;

//UPPReset();
/*启动UPP DMA传输*/
UARTPuts("upp_prog_dma_i\n",-2);
upp_reg_hdl->UPID0 = (Uint32)upp_buffer_a;
upp_reg_hdl->UPID1 = ((Uint32)upp_line_count << 16) | (Uint32)upp_line_size*sizeof(Int16);
upp_reg_hdl->UPID2 = (Uint32)upp_line_offset*sizeof(Int16);

UARTPuts("upp_prog_dma_i\n",-2);
upp_reg_hdl->UPQD0 = (Uint32)upp_buffer_b;
upp_reg_hdl->UPQD1 = ((Uint32)upp_line_count << 16) | (Uint32)upp_line_size*sizeof(Int16);
upp_reg_hdl->UPQD2 = (Uint32)upp_line_offset*sizeof(Int16);

/*等待UPP传输完毕*/
//i=0;
//j=0;
while (upp_interrupt_count < target_int_count && upp_error_count == 0)
{
      /*  测试UPP传输的同时操作普通DDR数据
      temp=i;
      i++;
      if(i==1024)
      {
         i=0;
         j++;
      }
      */

   asm(" nop");

   //UARTprintf( "upp_interrupt_count=%d\n",upp_interrupt_count);
}

/*检查UPP传输的数据是否正确 (loopback modes only)*/
//UARTprintf( "i=%d\n",i);
//UARTprintf( "j=%d\n",j);
UARTPuts("Data mismatch in buffers.\n",-2);
if (upp_interrupt_count == 2 && upp_error_count == 0)
{
      for (i = 0; i<upp_frame_size; i++)
      {
         if (upp_buffer_a != upp_buffer_b)
         {
            upp_error_count++;
         }
      }
}

/* 报告通信结果*/
if(upp_error_count != 0)
      UARTprintf( "upp_error_count=%d\n",upp_error_count);
else
      UARTPuts("uPP transfers complete!\n",-2);

UARTPuts("Do you want to print all the data?(y/n) ",-2);
UARTGets(ch,2);
UARTPuts("\n", -2);

if(ch[0] == 'y')
{
      /*打印全部读到的数据*/
      for(i=0; i<upp_frame_size; )
      {
         for(j=0; j<5; j++)
         {
            UARTprintf("upp_buffer_a[%d]=%d ",i,upp_buffer_a);
            i++;
            //if(i >= 4096)
            // break;

         }
         UARTPuts("\n",-2);
      }
}

}