mouse_task.c File Reference

#include "config.h"
#include "conf_usb.h"
#include "mouse_task.h"
#include "usb_descriptors.h"
#include "lib_mcu/usb/usb_drv.h"
#include "lib_mcu/adc/adc_drv.h"
#include "lib_mcu/wdt/wdt_drv.h"
#include "lib_mcu/power/power_drv.h"
#include "modules/usb/device_chap9/usb_standard_request.h"

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Defines
#define	Hid_mouse_report_up()   (g_hid_mouse_report[2]-=MOUSE_SPEED)
#define	Hid_mouse_report_down()   (g_hid_mouse_report[2]+=MOUSE_SPEED)
#define	Hid_mouse_report_left()   (g_hid_mouse_report[1]-=MOUSE_SPEED)
#define	Hid_mouse_report_right()   (g_hid_mouse_report[1]+=MOUSE_SPEED)
#define	Hid_mouse_report_scroll_up()   (g_hid_mouse_report[3]+=MOUSE_SPEED)
#define	Hid_mouse_report_scroll_down()   (g_hid_mouse_report[3]-=MOUSE_SPEED)
#define	Hid_mouse_report_click_left()   (g_hid_mouse_report[0] |= 0x01)
#define	Hid_mouse_report_click_right()   (g_hid_mouse_report[0] |= 0x02)
#define	Hid_mouse_report_click_middle()   (g_hid_mouse_report[0] |= 0x04)
#define	Hid_mouse_report_reset()   (g_hid_mouse_report[0]=0,g_hid_mouse_report[1]=0,g_hid_mouse_report[2]=0,g_hid_mouse_report[3]=0)
#define	Is_mouse_left_event()   Is_joy_left()
#define	Is_mouse_right_event()   Is_joy_right()
#define	Is_mouse_up_event()   Is_joy_up()
#define	Is_mouse_down_event()   Is_joy_down()
#define	SCROLL_STEP   10
#define	Is_mouse_scroll_up_event()   ((g_u16_pos_scroll+SCROLL_STEP) < Get_adc_pot_val())
#define	Is_mouse_scroll_down_event()   ((g_u16_pos_scroll-SCROLL_STEP) > Get_adc_pot_val())
#define	Is_mouse_click_left_event()   Is_btn_left()
#define	Is_mouse_click_middle_event()   FALSE
#define	Is_mouse_click_right_event()   Is_btn_middle()
Functions
bit	is_mouse_event (void)
	This function checks the board interface and fill the HID mouse report.
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 ()
	This function increments the SOF counter each times.
void	suspend_action (void)
	This function enables switches interruptions and enters the CPU in power down mode.
__interrupt void	switch_event_int ()
	This function exits the CPU of the power down mode and disables switches interruptions.
Variables
Bool	g_b_send_report
	Used to flag a report ready to send.
Bool	g_b_send_ack_report
	Used to flag a ack report ready to send.
U8	g_hid_mouse_report [4]
	Used to store the HID mouse report.
U16	g_u16_pos_scroll
	Used to store the HID mouse report.
volatile U8	g_u8_cpt_sof
	Used to count the number of SOF and create a timer counter.

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Detailed Description

This file manages the Mouse task.

• Compiler: IAR EWAVR and GNU GCC for AVR
• Supported devices: AT90USB1287, AT90USB1286, AT90USB647, AT90USB646

Author:

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

Definition in file mouse_task.c.

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Function Documentation

bit is_mouse_event

(

void

)

This function checks the board interface and fill the HID mouse report.

Returns:

TRUE if an event occurs. In this case, the HID mouse report is filled

FALSE if not event

Definition at line 214 of file mouse_task.c.

References FALSE, g_hid_mouse_report, g_u16_pos_scroll, Hid_mouse_report_click_left, Hid_mouse_report_click_middle, Hid_mouse_report_click_right, Hid_mouse_report_down, Hid_mouse_report_left, Hid_mouse_report_reset, Hid_mouse_report_right, Hid_mouse_report_scroll_down, Hid_mouse_report_scroll_up, Hid_mouse_report_up, Is_mouse_click_left_event, Is_mouse_click_middle_event, Is_mouse_click_right_event, Is_mouse_down_event, Is_mouse_left_event, Is_mouse_right_event, Is_mouse_scroll_down_event, Is_mouse_scroll_up_event, Is_mouse_up_event, SCROLL_STEP, and TRUE.

Referenced by mouse_task().

{
   Hid_mouse_report_reset();
   
   // Check Click events
   if(Is_mouse_click_left_event()) {
      Hid_mouse_report_click_left();
   }
   if(Is_mouse_click_middle_event()) {
      Hid_mouse_report_click_middle();
   }
   if(Is_mouse_click_right_event()) {
      Hid_mouse_report_click_right();
   }

   // Check Mouve events
   if (Is_mouse_left_event()) {
      Hid_mouse_report_left();
   }
   if (Is_mouse_right_event()) {
      Hid_mouse_report_right();
   }
   if (Is_mouse_up_event()) {
      Hid_mouse_report_up();
   }
   if (Is_mouse_down_event()) {
      Hid_mouse_report_down();
   }
#if (TARGET_BOARD==STK525)
   if (Is_mouse_scroll_up_event()) {
      g_u16_pos_scroll+=SCROLL_STEP;
      Hid_mouse_report_scroll_up();
   }
   if (Is_mouse_scroll_down_event()) {
      g_u16_pos_scroll-=SCROLL_STEP;
      Hid_mouse_report_scroll_down();
   }
#endif

   // Check report
   if((0==g_hid_mouse_report[0])
   && (0==g_hid_mouse_report[1])
   && (0==g_hid_mouse_report[2])
   && (0==g_hid_mouse_report[3]))
   {
      return FALSE;  // No event
   }
   return TRUE;      // Event(s) occurs
}

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void mouse_task

(

void

)

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

Definition at line 146 of file mouse_task.c.

{
   if(Is_usb_vbus_low())
   {
      // Before power down the USB Stack must be call to manage the VBus low state
      usb_task();
      Usb_enable_vbus_interrupt();  // To exit of power down mode when VBus is plugged
      Setup_power_down_mode();
      Sleep_instruction();
      Usb_disable_vbus_interrupt();
   }

   if(!Is_device_enumerated())
      return;  // Device not ready
   
#if (USB_LOW_SPEED_DEVICE==DISABLE)
   // 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;
#endif

   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();      
}

__interrupt void switch_event_int

(

)

This function exits the CPU of the power down mode and disables switches interruptions.

//! This function is executed when a switche interruption is received
//! 

Definition at line 310 of file mouse_task.c.

References Switches_disable_it, and usb_generate_remote_wakeup().

{
   Switches_disable_it();
   usb_generate_remote_wakeup();
}

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Variable Documentation

Bool g_b_send_report

Used to flag a report ready to send.

Definition at line 106 of file mouse_task.c.

Referenced by mouse_task(), and mouse_task_init().

Bool g_b_send_ack_report

Used to flag a ack report ready to send.

Definition at line 108 of file mouse_task.c.

Referenced by mouse_task(), and mouse_task_init().

U8 g_hid_mouse_report[4]

Used to store the HID mouse report.

Definition at line 110 of file mouse_task.c.

Referenced by is_mouse_event(), and mouse_task().

U16 g_u16_pos_scroll

Used to store the HID mouse report.

Definition at line 113 of file mouse_task.c.

Referenced by is_mouse_event(), and mouse_task_init().

volatile U8 g_u8_cpt_sof

Used to count the number of SOF and create a timer counter.

Definition at line 116 of file mouse_task.c.

Referenced by mouse_task(), mouse_task_init(), and sof_action().

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