hid_task.c

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//_____  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/util/start_boot.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 ____________________________________________

         volatile U8    cpt_sof=0;
extern            U8    jump_bootloader;
                  U8    g_last_joy       =0;


void hid_report_out  (void);
void hid_report_in   (void);

void hid_task_init(void)
{
   Leds_init();
   Joy_init();
   Leds_off();
}

void hid_task(void)
{
   if(!Is_device_enumerated())          // Check USB HID is enumerated
      return;

   hid_report_out();
   hid_report_in();
}


void hid_report_out(void)
{
   Usb_select_endpoint(EP_HID_OUT);
   if(Is_usb_receive_out())
   {
      //* Read report from HID Generic Demo
      U8 led_state;
      U8 led_number;
      led_state      = Usb_read_byte()&0x0F; // RepportOUT[0] is LEDS value
      led_number     = Usb_read_byte()&0x0F;
      switch (led_number)
      {
         case 1:
            if(led_state)
            {  Led0_on();   }
            else {Led0_off();}
            break;
         case 2:
            if(led_state)
            {  Led1_on();   }
            else {Led1_off();}
            break;
         case 3:
            if(led_state)
            {  Led2_on();   }
            else {Led2_off();}
            break;
      }  
      Usb_ack_receive_out();
   }

   //** Check if we received DFU mode command from host
   if(jump_bootloader)
   {
      U32 volatile tempo;
      Leds_off();
      Usb_detach();                          // Detach actual generic HID application
      for(tempo=0;tempo<70000;tempo++);      // Wait some time before
      start_boot();                          // Jumping to booltoader
   }
}


void hid_report_in(void)
{
   U8 joy   =0;

   Usb_select_endpoint(EP_HID_IN);
   if(!Is_usb_write_enabled())
      return;                                // Not ready to send report
   
   // Build the Joytick report
   if(Is_joy_down())
   {
     joy=0x01;
   }
   if(joy==g_last_joy)
      return;                                // Same report then no send report
   g_last_joy=joy;
  
   // Send report
   Usb_write_byte(g_last_joy);               // Joystick
   Usb_write_byte(GPIOR1);                   // Dummy (not used)
   Usb_write_byte(GPIOR1);                   // Dummy (not used)
   Usb_write_byte(GPIOR1);                   // Dummy (not used)
   Usb_write_byte(GPIOR1);                   // Dummy (not used)
   Usb_write_byte(GPIOR1);                   // Dummy (not used)
   Usb_write_byte(GPIOR1);                   // Dummy (not used)
   Usb_write_byte(GPIOR1);                   // Dummy (not used)
   Usb_ack_in_ready();                       // Send data over the USB
}

void sof_action()
{
   cpt_sof++;
}

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