mouse_task.h File Reference

#include "config.h"

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Functions
void	mouse_task_init (void)
	This function initializes the hardware/software resources required for mouse task.
void	mouse_task (void)
	Task which links mouse events with the USB HID mouse device.
void	sof_action (void)
	This function increments the SOF counter each times.

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Detailed Description

This file contains the function declarations - Compiler: IAR EWAVR and GNU GCC for AVR

• Supported devices: AT90USB162, AT90USB82

  Author:

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

Definition in file mouse_task.h.

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Function Documentation

void mouse_task_init

(

void

)

This function initializes the hardware/software resources required for mouse task.

Definition at line 116 of file mouse_task.c.

References FALSE, g_b_send_ack_report, g_b_send_report, g_u8_cpt_sof, Hwb_button_init, Joy_init, Led0_off, Led1_on, Leds_init, TRUE, and Usb_enable_sof_interrupt.

{
   // Init SOF
   g_u8_cpt_sof=0;
   Usb_enable_sof_interrupt();

   // Init interface board
   Joy_init();
   Leds_init();
   Hwb_button_init();
   Led1_on();
   Led0_off();
   
   // Send a ack report at startup
   g_b_send_report      = FALSE;
   g_b_send_ack_report  = TRUE;
}

void mouse_task

(

void

)

Task which links mouse events with the USB HID mouse device.

Definition at line 137 of file mouse_task.c.

References EP_MOUSE_IN, FALSE, g_b_send_ack_report, g_b_send_report, g_hid_mouse_report, g_u8_cpt_sof, Hid_mouse_report_reset, Is_device_enumerated, is_mouse_event(), Is_usb_write_enabled, Led0_off, Led0_on, NB_IDLE_POLLING_SOF, TRUE, Usb_ack_in_ready, Usb_select_endpoint, and Usb_write_byte.

{
   if(!Is_device_enumerated())
      return;  // Device not ready
   
   // The SOF is used to schedule the task at the same frequency that Endpoint Interrupt frequency
   // This check allow to win a CPU time
   if(g_u8_cpt_sof<NB_IDLE_POLLING_SOF)
      return;  // Wait a delay
   g_u8_cpt_sof=0;

   if(!g_b_send_report)
   {
      // No report sending on going then check mouse event to eventualy fill a new report
      if(is_mouse_event())
      {
         // Enable sending of report
         g_b_send_report      = TRUE;
      }
   }
   
   if((!g_b_send_report)&&(!g_b_send_ack_report))
      return;  // No report and ack to send
   
   //** A report or ack must be send
   Usb_select_endpoint(EP_MOUSE_IN);
   if(!Is_usb_write_enabled())
      return;  // Endpoint no free
   
   Led0_on();      
   if( g_b_send_report )
   {
      g_b_send_report      = FALSE;
      // Send an ack after a "clic" report only
      g_b_send_ack_report = (0!=g_hid_mouse_report[0]);
   }
   else
   {
      Hid_mouse_report_reset();     // Reset report to have a ack report
      g_b_send_ack_report  = FALSE;
   }
   // Send report
   Usb_write_byte(g_hid_mouse_report[0]);
   Usb_write_byte(g_hid_mouse_report[1]);
   Usb_write_byte(g_hid_mouse_report[2]);
   Usb_write_byte(g_hid_mouse_report[3]);
   Usb_ack_in_ready();
   Led0_off();      
}

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