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AT89C5131 project = How to change LENGTH OF REPORT Value (greater than 32 bytes)


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Aniolek

Thu Jul 02 2009, 10:00AM

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Joined: Thu Jul 02 2009, 09:46AM

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Hello,

I'm working on the c5131_usb_generic file. I'm sending datas from my USB device to my PC.
The LENGHT OF REPORT is define as 0x20, I'd like to send 128 bytes, but when I change the value of the LENGHT OF REPORT to 0x80, the device isn't recognised by the PC! I can change the value only if it is lower than 0x20.
Does someone has managed to make a change of the LENGHT OF REPORT value to send mores than 32 bytes?
Maybe it's impossible to do this with this microcontroller.

Thanks :bye
Isabel

[ Edited Fri Jul 03 2009, 04:34AM ]

Ajay Bhargav

Fri Jul 03 2009, 08:30AM

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Aniolek

Mon Jul 06 2009, 04:50AM

Registered Member #19894

Joined: Thu Jul 02 2009, 09:46AM

Posts: 2
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Of course, I've taken the code on atmel website :
http://www.atmel.com/dyn/resources/prod_documents/c5131-usb-generic-1_2_0.zip

I've modified the file user_application.c like this, more accurately:

CODE:

void user_application_task (void)

{

  int var = 0;

  int i,j=0;

  unsigned char* chaine;

  chaine = (char*) calloc (256,sizeof(unsigned char));

  chaine = "000110101101010010101010101011001101010101010101010

101010100101010101010101010101010101010101010101010101010101

010101010101010101010101010101010101010101010101010101010101

010101010101101010010101011001010101100101101010101010100101

010101010101010101010101010101010101010101010101010101010101

010101010101010101010101010101010101010101010101010101010101

011010010110101010010101011001101001011010101010101010101010

101010010101100101100101101001101010010110101010010101010101

010101010110011001100101100110011001011000110101101010010101

010101011001101010101010101010101010100101010101010101010101

010101010101010101010101010101010101010101010101010101010101

010101010101010101010101010101010101010101101010010101011001

010101100101101010101010100101010101010101010101010101010101

010101010101010101010101010101010101010101010101010101010101

010101010101010101010101010101011010010110101010010101011001

101001011010101010101010101010101010010101100101100101101001

101010010110101010010101010101010101010110011001100101100110

0110010110111";

  if(Is_new_data_read())

    {

       usb_read_continuous(data_received);

           if((data_received[0]=='1')&&(data_received[1]=='1'))

           {

           j=0;  

                                                 for(i=0;i<29;i++)

                                {        

                                  data_to_send[i] = chaine[j];

                                  j++;

                                }

                                data_to_send[i] = '\0';

                                usb_write_continuous(data_to_send,30);

                }

           if((data_received[0]=='1')&&(data_received[1]=='2'))

           {

           j=29;  

                                                 for(i=0;i<29;i++)

                                {        

                                  data_to_send[i] = chaine[j];

                                  j++;

                                }

                                data_to_send[i] = '\0';

                                usb_write_continuous(data_to_send,30);

                }

    }

    if (INT0_button != last_INT0_button_state)   // INT0 button pressed

    {

       if (Is_write_data_ready())

       {

          data_to_send[0] = !INT0_button;

          last_INT0_button_state = INT0_button;

       }

    }

    if (reset_to_bootloader == TRUE)

    {

       Usb_detach();

       Led_all_off();

       Enable_ale();

       Configure_led(0,STANDARD_PORT);

       Configure_led(1,STANDARD_PORT);

       Configure_led(2,STANDARD_PORT);

       Configure_led(3,STANDARD_PORT);

       for (data_received[0]=0; data_received[0]<250; data_received[0]++);

       Usb_disable();

       Pll_stop();

       EA = 0;

       MAP_BOOT;

       __API_JMP_BOOTLOADER();

    }

}

[ Edited Mon Jul 06 2009, 04:57AM ]


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