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/wdt/wdt_drv.h"
#include "lib_mcu/power/power_drv.h"
#include "lib_mcu/pll/pll_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 Is_mouse_scroll_up_event()   FALSE
#define Is_mouse_scroll_down_event()   FALSE
#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)
 This function has no effect, but is called by scheduler.
void mouse_task_by_IT (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.
volatile U8 g_u8_cpt_sof
 Used to count the number of SOF and create a timer counter.

Detailed Description

This file manages the Mouse task.

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

Definition in file mouse_task.c.

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 200 of file mouse_task.c.

References FALSE, g_hid_mouse_report, 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, and TRUE.

Referenced by mouse_task_by_IT().

00201 {
00202    Hid_mouse_report_reset();
00203    
00204    // Check Click events
00205    if(Is_mouse_click_left_event()) {
00206       Hid_mouse_report_click_left();
00207    }
00208    if(Is_mouse_click_middle_event()) {
00209       Hid_mouse_report_click_middle();
00210    }
00211    if(Is_mouse_click_right_event()) {
00212       Hid_mouse_report_click_right();
00213    }
00214 
00215    // Check Mouve events
00216    if (Is_mouse_left_event()) {
00217       Hid_mouse_report_left();
00218    }
00219    if (Is_mouse_right_event()) {
00220       Hid_mouse_report_right();
00221    }
00222    if (Is_mouse_up_event()) {
00223       Hid_mouse_report_up();
00224    }
00225    if (Is_mouse_down_event()) {
00226       Hid_mouse_report_down();
00227    }
00228    if (Is_mouse_scroll_up_event()) {
00229       Hid_mouse_report_scroll_up();
00230    }
00231    if (Is_mouse_scroll_down_event()) {
00232       Hid_mouse_report_scroll_down();
00233    }
00234 
00235    // Check report
00236    if((0==g_hid_mouse_report[0])
00237    && (0==g_hid_mouse_report[1])
00238    && (0==g_hid_mouse_report[2])
00239    && (0==g_hid_mouse_report[3]))
00240    {
00241       return FALSE;  // No event
00242    }
00243    return TRUE;      // Event(s) occurs
00244 }

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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.

00117 {
00118    // Init SOF
00119    g_u8_cpt_sof=0;
00120    Usb_enable_sof_interrupt();
00121 
00122    // Init interface board
00123    Joy_init();
00124    Leds_init();
00125    Hwb_button_init();
00126    Led1_on();
00127    Led0_off();
00128    
00129    // Send a ack report at startup
00130    g_b_send_report      = FALSE;
00131    g_b_send_ack_report  = TRUE;
00132 }

void mouse_task ( void   ) 

This function has no effect, but is called by scheduler.

It is replaced by mouse_task_by_IT() that is interrupt handled

Definition at line 137 of file mouse_task.c.

00138 {
00139 }

void mouse_task_by_IT ( void   ) 

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

//! This task is interrupt handled : the function is called periodically from the ISR of Start of Frame reception
//! That makes possible moving the mouse while the mass storage is used (file copy for example)
//!

Definition at line 150 of file mouse_task.c.

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

Referenced by sof_action().

00151 {
00152    if(!Is_device_enumerated())
00153       return;  // Device not ready
00154   
00155    if(!g_b_send_report)
00156    {
00157       // No report sending on going then check mouse event to eventualy fill a new report
00158       if(is_mouse_event())
00159       {
00160          // Enable sending of report
00161          g_b_send_report      = TRUE;
00162       }
00163    }
00164    
00165    if((!g_b_send_report)&&(!g_b_send_ack_report))
00166       return;  // No report and ack to send
00167    
00168    //** A report or ack must be send
00169    Usb_select_endpoint(EP_MOUSE_IN);
00170    if(!Is_usb_write_enabled())
00171       return;  // Endpoint no free
00172    
00173    Led0_on();      
00174    if( g_b_send_report )
00175    {
00176       g_b_send_report      = FALSE;
00177       // Send an ack after a "clic" report only
00178       g_b_send_ack_report = (0!=g_hid_mouse_report[0]);
00179    }
00180    else
00181    {
00182       Hid_mouse_report_reset();     // Reset report to have a ack report
00183       g_b_send_ack_report  = FALSE;
00184    }
00185    // Send report
00186    Usb_write_byte(g_hid_mouse_report[0]);
00187    Usb_write_byte(g_hid_mouse_report[1]);
00188    Usb_write_byte(g_hid_mouse_report[2]);
00189    Usb_write_byte(g_hid_mouse_report[3]);
00190    Usb_ack_in_ready();
00191    Led0_off();      
00192 }

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__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 302 of file mouse_task.c.

References Switches_disable_it, and usb_generate_remote_wakeup().

00304 {
00305    Switches_disable_it();
00306    usb_generate_remote_wakeup();
00307 }

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Variable Documentation

Bool g_b_send_report

Used to flag a report ready to send.

Definition at line 105 of file mouse_task.c.

Referenced by mouse_task_by_IT(), and mouse_task_init().

Bool g_b_send_ack_report

Used to flag a ack report ready to send.

Definition at line 107 of file mouse_task.c.

Referenced by mouse_task_by_IT(), and mouse_task_init().

U8 g_hid_mouse_report[4]

Used to store the HID mouse report.

Definition at line 109 of file mouse_task.c.

Referenced by is_mouse_event(), and mouse_task_by_IT().

volatile U8 g_u8_cpt_sof

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

Definition at line 111 of file mouse_task.c.

Referenced by mouse_task_init(), and sof_action().

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