hid_task.c

ATMEL 90usb128 USB source,include USB protocol stack.

//!
//! @file hid_task.c,v
//!
//! Copyright (c) 2004 Atmel.
//!
//! Please read file license.txt for copyright notice.
//!
//! @brief This file manages the generic HID IN/OUT task.
//!
//!
//! @version 1.4 at90usb128-usbkey-demo-3enum-host-mouse-1_0_4 $Id: hid_task.c,v 1.4 2006/07/12 15:17:29 rletendu Exp $
//!
//! @todo
//! @bug
//!/

//_____  I N C L U D E S ___________________________________________________

#include "config.h"
#include "conf_usb.h"
#include "hid_task.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\adc\adc_drv.h"



//_____ M A C R O S ________________________________________________________


//_____ D E F I N I T I O N S ______________________________________________



//_____ D E C L A R A T I O N S ____________________________________________

extern bit   usb_connected;
extern U8   usb_configuration_nb;
extern volatile U8 joy_for_mouse;
extern volatile U16 cpt_sof_tempe;
   U8 volatile tempe;


//! Declare function pointer to USB bootloader entry point
void (*start_bootloader) (void)=(void (*)(void))0xf000;


//!
//! @brief This function initializes the target board ressources.
//!
//! @warning Code:?? bytes (function code length)
//!
//! @param none
//!
//! @return none
//!
//!/
void hid_task_init(void)
{
   init_adc();
   Leds_init();
   Joy_init();
}





//! @brief Entry point of the HID generic communication task
//!
//! This function manages IN/OUT repport management.
//!
//! @warning Code:?? bytes (function code length)
//!
//! @param none
//!
//! @return none
void hid_task(void)
{
   U8 dummy;
   U8 dummy2;
   U8 volatile pot=0;

   U8 joy;
   U32 volatile tempo;


    if(Is_device_enumerated() )          //! Check USB HID is enumerated
    {
      Usb_select_endpoint(EP_HID_OUT);    //! Get Data repport from Host
      if(Is_usb_receive_out())
      {
         Leds_set_val(Usb_read_byte());   //! RepportOUT[0] is LEDS value
         GPIOR1=Usb_read_byte();          //! not used
         GPIOR1=Usb_read_byte();          //! not used
         dummy=Usb_read_byte();           //! In combinaisoon with nex byte allows
         dummy2=Usb_read_byte();          //! the host to send an enter DFU mode event
         Usb_ack_receive_out();
      }

      if(dummy==0x55 && dummy2==0xAA)     //! Check if we received DFU mode command from host
      {
         Usb_detach();                    //! Detach actual generic HID application
         for(tempo=0;tempo<70000;tempo++);//! Wait some time before
         (*start_bootloader)();           //! Jumping to booltoader
      }


      if (cpt_sof_tempe>=500)
      {
         tempe=(S8)Read_temperature();       //! Get temperature value from ADC converter
         cpt_sof_tempe=0;
      }
      joy=0;
         //! Now we build the Joytick information
         if(Is_joy_up())                     //! Check for UP event
         {
            joy+=0x01;
         }
         if(Is_joy_down())                   //! Check for DOWN event
         {
            joy+=0x02;
         }
         if(Is_joy_right())                  //! Check for RIGHT event
         {
            joy+=0x04;
         }
         if(Is_joy_left())                   //! Check for LEFT event
         {
            joy+=0x08;
         }

      Usb_select_endpoint(EP_HID_IN);     //! Ready to send these information to the host application
      if(Is_usb_in_ready())
      {
         Usb_write_byte(Leds_get_val());           //! Leds
         Usb_write_byte(joy);             //! Joystick
         Usb_write_byte(pot);             //! Potentiometer
         Usb_write_byte(tempe);           //! Temperature
         Usb_write_byte(GPIOR1);          //! Dummy (not used)
         Usb_write_byte(~PINE);           //! Dummy (not used)
         Usb_write_byte(~PINE);           //! Dummy (not used)
         Usb_write_byte(~PINE);           //! Dummy (not used)
         Usb_ack_fifocon();               //! Send data over the USB
      }
    }

}