user call-back functions More...

#include "config.h"
#include "conf_usb.h"
#include "lib_mcu/usb/usb_drv.h"
#include "usb_descriptors.h"
#include "modules/usb/device_chap9/usb_standard_request.h"
#include "usb_specific_request.h"
#include "lib_mcu/flash/flash_drv.h"

Include dependency graph for usb_specific_request.c:

Go to the source code of this file.

Functions
void	hid_get_report_descriptor (void)
	This function manages hit get repport request.
void	usb_hid_set_report_ouput (void)
	This function manages hit set report request.
void	usb_hid_set_idle (U8 u8_report_id, U8 u8_duration)
	This function manages hid set idle request.
void	usb_hid_get_idle (U8 u8_report_id)
	This function manages hid get idle request.
void	hid_get_hid_descriptor (void)
	This function manages hid get hid descriptor request.
Bool	usb_user_read_request (U8 type, U8 request)
	This function checks the specific request and if known then processes it
void	usb_user_endpoint_init (U8 conf_nb)
	This function configures the endpoints.
U8	usb_user_interface_get (U16 wInterface)
	This function returns the interface alternate setting.
void	usb_user_interface_reset (U16 wInterface, U8 alternate_setting)
	This function selects (and resets) the interface alternate setting.
Bool	usb_user_get_descriptor (U8 type, U8 string)
	This function fills the global descriptor.
Variables
U8 code *	pbuffer
U8	data_to_transfer
code S_usb_hid_report_descriptor_mouse	usb_hid_report_descriptor_mouse
U8	g_u8_report_rate = 0

Detailed Description

user call-back functions

This file contains the user call-back functions corresponding to the application:

Compiler: IAR EWAVR and GNU GCC for AVR
Supported devices: ATmega32U4

Author:: Atmel Corporation: http://www.atmel.com
Support and FAQ: http://support.atmel.no/

Definition in file usb_specific_request.c.

Function Documentation

void hid_get_report_descriptor ( void )

This function manages hit get repport request.

Definition at line 271 of file usb_specific_request.c.

References data_to_transfer, EP_CONTROL_LENGTH, FALSE, Is_usb_read_control_enabled, Is_usb_receive_out, LSB, MSB, pbuffer, S_usb_hid_report_descriptor_mouse::report, TRUE, Usb_ack_receive_out, Usb_ack_receive_setup, usb_hid_report_descriptor_mouse, Usb_read_byte, Usb_send_control_in, and Usb_write_byte.

Referenced by usb_user_read_request().

{
   U16 wLength;
   U8  nb_byte;
   bit zlp = FALSE;
   U16 wInterface;

   LSB(wInterface)=Usb_read_byte();
   MSB(wInterface)=Usb_read_byte();

   data_to_transfer = sizeof(usb_hid_report_descriptor_mouse);
   pbuffer = &(usb_hid_report_descriptor_mouse.report[0]);

   LSB(wLength) = Usb_read_byte();
   MSB(wLength) = Usb_read_byte();
   Usb_ack_receive_setup();

   if (wLength > data_to_transfer)
   {
      if ((data_to_transfer % EP_CONTROL_LENGTH) == 0) { zlp = TRUE; }
      else { zlp = FALSE; }
   }
   else
   {
      data_to_transfer = (U8)wLength;           // send only requested number of data
   }

   while((data_to_transfer != 0) && (!Is_usb_receive_out()))
   {
      while(!Is_usb_read_control_enabled());

      nb_byte=0;
      while(data_to_transfer != 0)              // Send data until necessary
      {
         if(nb_byte++==EP_CONTROL_LENGTH)       // Check endpoint 0 size
         {
            break;
         }
#ifndef __GNUC__
         Usb_write_byte(*pbuffer++);
#else    // AVRGCC does not support point to PGM space
         Usb_write_byte(pgm_read_byte_near((unsigned int)pbuffer++));
#endif
         data_to_transfer --;
      }
      Usb_send_control_in();
   }

   if(Is_usb_receive_out())
   { 
      // abort from Host
      Usb_ack_receive_out();
      return;
   }
   if(zlp == TRUE)
   { 
      while(!Is_usb_read_control_enabled());
      Usb_send_control_in();
   }

   while(!Is_usb_receive_out());
   Usb_ack_receive_out();
}

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void usb_hid_set_report_ouput ( void )

This function manages hit set report request.

Definition at line 338 of file usb_specific_request.c.

References Is_usb_receive_out, Usb_ack_receive_out, Usb_ack_receive_setup, and Usb_send_control_in.

Referenced by usb_user_read_request().

{
   Usb_ack_receive_setup();
   Usb_send_control_in();

   while(!Is_usb_receive_out());
   Usb_ack_receive_out();
   Usb_send_control_in();
}

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void usb_hid_set_idle	(	U8	u8_report_id,
		U8	u8_duration
	)

This function manages hid set idle request.

Parameters:

Duration	When the upper byte of wValue is 0 (zero), the duration is indefinite else from 0.004 to 1.020 seconds
Report	ID 0 the idle rate applies to all input reports, else only applies to the Report ID

Definition at line 354 of file usb_specific_request.c.

References g_u8_report_rate, Is_usb_in_ready, LSB, MSB, Usb_ack_receive_setup, Usb_read_byte, and Usb_send_control_in.

Referenced by usb_user_read_request().

{
   U16 wInterface;
   
   // Get interface number to put in idle mode
   LSB(wInterface)=Usb_read_byte();
   MSB(wInterface)=Usb_read_byte();
   Usb_ack_receive_setup();
  
   g_u8_report_rate = u8_duration;
   
   Usb_send_control_in();
   while(!Is_usb_in_ready());
}

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void usb_hid_get_idle ( U8 u8_report_id )

This function manages hid get idle request.

Parameters:

Report ID 0 the idle rate applies to all input reports, else only applies to the Report ID

Definition at line 374 of file usb_specific_request.c.

References g_u8_report_rate, Is_usb_receive_out, LSB, MSB, Usb_ack_receive_out, Usb_ack_receive_setup, Usb_read_byte, Usb_send_control_in, and Usb_write_byte.

Referenced by usb_user_read_request().

{
   U16 wLength;
   U16 wInterface;

   // Get interface number to put in idle mode
   LSB(wInterface)= Usb_read_byte();
   MSB(wInterface)= Usb_read_byte();
   LSB(wLength)   = Usb_read_byte();
   MSB(wLength)   = Usb_read_byte();
   Usb_ack_receive_setup();
   
   if( wLength != 0 )
   {
      Usb_write_byte(g_u8_report_rate);
      Usb_send_control_in();
   }
   
   while(!Is_usb_receive_out());
   Usb_ack_receive_out();
}

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void hid_get_hid_descriptor ( void )

This function manages hid get hid descriptor request.

Definition at line 399 of file usb_specific_request.c.

References S_usb_hid_descriptor::bLength, data_to_transfer, EP_CONTROL_LENGTH, FALSE, S_usb_user_configuration_descriptor::hid_mouse, Is_usb_read_control_enabled, Is_usb_receive_out, LSB, MSB, pbuffer, TRUE, Usb_ack_receive_out, Usb_ack_receive_setup, usb_conf_desc, Usb_read_byte, Usb_send_control_in, and Usb_write_byte.

Referenced by usb_user_read_request().

{
   U16 wLength;
   U8  nb_byte;
   bit zlp=FALSE;
   U16 wInterface;

   LSB(wInterface)=Usb_read_byte();
   MSB(wInterface)=Usb_read_byte();

   data_to_transfer = sizeof(usb_conf_desc.hid_mouse);
   pbuffer = &(usb_conf_desc.hid_mouse.bLength);

   LSB(wLength) = Usb_read_byte();
   MSB(wLength) = Usb_read_byte();
   Usb_ack_receive_setup();

   if (wLength > data_to_transfer)
   {
      if ((data_to_transfer % EP_CONTROL_LENGTH) == 0) { zlp = TRUE; }
      else { zlp = FALSE; }                     // no need of zero length packet
   }
   else
   {
      data_to_transfer = (U8)wLength;           // send only requested number of data
   }

   while((data_to_transfer != 0) && (!Is_usb_receive_out()))
   {
      while(!Is_usb_read_control_enabled());

      nb_byte=0;
      while(data_to_transfer != 0)              // Send data until necessary
      {
         if(nb_byte++==EP_CONTROL_LENGTH)       // Check endpoint 0 size
         {
            break;
         }
#ifndef __GNUC__
         Usb_write_byte(*pbuffer++);
#else    // AVRGCC does not support point to PGM space
         Usb_write_byte(pgm_read_byte_near((unsigned int)pbuffer++));
#endif
         data_to_transfer --;
      }
      Usb_send_control_in();
   }

   if(Is_usb_receive_out())
   { 
      // abort from Host
      Usb_ack_receive_out();
      return;
   }
   if(zlp == TRUE)
   { 
      while(!Is_usb_read_control_enabled());
      Usb_send_control_in();
   }

   while(!Is_usb_receive_out());
   Usb_ack_receive_out();
}

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Bool usb_user_read_request	(	U8	type,
		U8	request
	)

This function checks the specific request and if known then processes it

Parameters:

type	corresponding at bmRequestType (see USB specification)
request	corresponding at bRequest (see USB specification)

Returns:: TRUE, when the request is processed; FALSE, if the request is'nt know (STALL handshake is managed by the main standard request function).

Definition at line 89 of file usb_specific_request.c.

References DESCRIPTOR_HID, DESCRIPTOR_PHYSICAL, DESCRIPTOR_REPORT, FALSE, hid_get_hid_descriptor(), hid_get_report_descriptor(), REPORT_TYPE_FEATURE, REPORT_TYPE_INPUT, REPORT_TYPE_OUTPUT, SETUP_GET_DESCRIPTOR, SETUP_HID_GET_IDLE, SETUP_HID_GET_PROTOCOL, SETUP_HID_GET_REPORT, SETUP_HID_SET_IDLE, SETUP_HID_SET_PROTOCOL, SETUP_HID_SET_REPORT, TRUE, usb_hid_get_idle(), usb_hid_set_idle(), usb_hid_set_report_ouput(), Usb_read_byte, USB_SETUP_GET_CLASS_INTER, USB_SETUP_GET_STAND_INTERFACE, and USB_SETUP_SET_CLASS_INTER.

Referenced by usb_process_request().

{
   U8    wValue_msb;
   U8    wValue_lsb;

   // Read wValue
   wValue_lsb = Usb_read_byte();
   wValue_msb = Usb_read_byte();

   //** Specific request from Class HID
   if( USB_SETUP_GET_STAND_INTERFACE == type )
   {
      switch( request )
      {
         case SETUP_GET_DESCRIPTOR:
         switch( wValue_msb ) // Descriptor ID
         {
            case DESCRIPTOR_HID:
            hid_get_hid_descriptor();
            return TRUE;
            break;
   
            case DESCRIPTOR_REPORT:
            hid_get_report_descriptor();
            return TRUE;
   
            case DESCRIPTOR_PHYSICAL:
            // TODO
            break;
         }
         break;
      }
   }
   if( USB_SETUP_SET_CLASS_INTER == type )
   {
      switch( request )
      {
         case SETUP_HID_SET_REPORT:
         // The MSB wValue field specifies the Report Type
         // The LSB wValue field specifies the Report ID
         switch (wValue_msb)
         {
            case REPORT_TYPE_INPUT:
            // TODO
            break;
            
            case REPORT_TYPE_OUTPUT:
            usb_hid_set_report_ouput();
            return TRUE;
            break;

            case REPORT_TYPE_FEATURE:
            break;
         }
         break;

         case SETUP_HID_SET_IDLE:
         usb_hid_set_idle(wValue_lsb,wValue_msb);
         return TRUE;
   
         case SETUP_HID_SET_PROTOCOL:
         // TODO
         break;
      }
   }
   if( USB_SETUP_GET_CLASS_INTER == type )
   {
      switch( request )
      {
         case SETUP_HID_GET_REPORT:
         // TODO
         break;
         case SETUP_HID_GET_IDLE:
         usb_hid_get_idle(wValue_lsb);
         return TRUE;
         case SETUP_HID_GET_PROTOCOL:
         // TODO
         break;
      }
   }
   return FALSE;  // No supported request
}

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void usb_user_endpoint_init ( U8 conf_nb )

This function configures the endpoints.

Parameters:

conf_nb configuration number choosed by USB host

Definition at line 177 of file usb_specific_request.c.

References DIRECTION_IN, EP_MOUSE_IN, NYET_ENABLED, ONE_BANK, SIZE_8, TYPE_INTERRUPT, and usb_configure_endpoint.

Referenced by usb_set_configuration().

{
   usb_configure_endpoint( EP_MOUSE_IN,   \
                           TYPE_INTERRUPT,\
                           DIRECTION_IN,  \
                           SIZE_8,        \
                           ONE_BANK,      \
                           NYET_ENABLED);
}

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U8 usb_user_interface_get ( U16 wInterface )

This function returns the interface alternate setting.

Parameters:

wInterface Interface selected

Returns:: alternate setting configurated

Definition at line 194 of file usb_specific_request.c.

Referenced by usb_get_interface().

{
   return 0;  // Only one alternate setting possible for all interface
}

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void usb_user_interface_reset	(	U16	wInterface,
		U8	alternate_setting
	)

This function selects (and resets) the interface alternate setting.

Parameters:

wInterface	Interface selected
alternate_setting	alternate setting selected

Definition at line 205 of file usb_specific_request.c.

References EP_MOUSE_IN, INTERFACE_NB_MOUSE, Usb_disable_stall_handshake, Usb_reset_data_toggle, Usb_reset_endpoint, and Usb_select_endpoint.

Referenced by usb_set_interface().

{  
   // default setting selected = reset data toggle
   if( INTERFACE_NB_MOUSE == wInterface )
   {
      // Interface mouse
      Usb_select_endpoint(EP_MOUSE_IN);
      Usb_disable_stall_handshake();
      Usb_reset_endpoint(EP_MOUSE_IN);
      Usb_reset_data_toggle();
   }
}

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Bool usb_user_get_descriptor	(	U8	type,
		U8	string
	)

This function fills the global descriptor.

Parameters:

type	corresponding at MSB of wValue (see USB specification)
string	corresponding at LSB of wValue (see USB specification)

Returns:: FALSE, if the global descriptor no filled

Definition at line 226 of file usb_specific_request.c.

References S_usb_serial_number::bLength, S_usb_product_string_descriptor::bLength, S_usb_manufacturer_string_descriptor::bLength, S_usb_language_id::bLength, data_to_transfer, DESCRIPTOR_STRING, FALSE, LANG_ID, MAN_INDEX, pbuffer, PROD_INDEX, SN_INDEX, SN_LENGTH, TRUE, usb_user_language_id, usb_user_manufacturer_string_descriptor, usb_user_product_string_descriptor, and usb_user_serial_number.

Referenced by usb_get_descriptor().

{
   switch(type)
   {
      case DESCRIPTOR_STRING:
      switch (string)
      {
         case LANG_ID:
         data_to_transfer = sizeof (usb_user_language_id);
         pbuffer = &(usb_user_language_id.bLength);
         return TRUE;
         break;
        
         case MAN_INDEX:
         data_to_transfer = sizeof (usb_user_manufacturer_string_descriptor);
         pbuffer = &(usb_user_manufacturer_string_descriptor.bLength);
         return TRUE;
         break;
        
         case PROD_INDEX:
         data_to_transfer = sizeof (usb_user_product_string_descriptor);
         pbuffer = &(usb_user_product_string_descriptor.bLength);
         return TRUE;
         break;
           
#if (USB_DEVICE_SN_USE==ENABLE)              
         case SN_INDEX:
         data_to_transfer = sizeof (usb_user_serial_number);
         pbuffer = &(usb_user_serial_number.bLength);
#if (USE_DEVICE_SN_UNIQUE==ENABLE)
         f_get_serial_string=TRUE;
         data_to_transfer += (SN_LENGTH*4);
#endif
         return TRUE;
         break;
#endif
      }
      break;
   }
   return FALSE;
}