device_mouse_task.c File Reference

#include "config.h"
#include "conf_usb.h"
#include "device_mouse_task.h"
#include "usb_descriptors.h"
#include "lib_mcu/usb/usb_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_device_mouse_event (void)
 This function checks the board interface and fill the HID mouse report.
void device_mouse_task_init (void)
 This function initializes the hardware/software resources required for mouse task.
void device_mouse_task (void)
 This function has no effect, but is called by scheduler.
void device_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.

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 = 0
 Used to count the number of SOF and create a timer counter.
volatile U16 g_u16_cpt2_sof = 0

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 device_mouse_task.c.

Function Documentation

bit is_device_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 195 of file device_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_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_up_event, and TRUE.

Referenced by device_mouse_task_by_IT().

00196 {
00197    Hid_mouse_report_reset();
00198    
00199    // Check Click events
00200    if(Is_mouse_click_left_event()) {
00201       Hid_mouse_report_click_left();
00202    }
00203    if(Is_mouse_click_middle_event()) {
00204       Hid_mouse_report_click_middle();
00205    }
00206    if(Is_mouse_click_right_event()) {
00207       Hid_mouse_report_click_right();
00208    }
00209 
00210    // Check Mouve events
00211    if (Is_mouse_left_event()) {
00212       Hid_mouse_report_left();
00213    }
00214    if (Is_mouse_right_event()) {
00215       Hid_mouse_report_right();
00216    }
00217    if (Is_mouse_up_event()) {
00218       Hid_mouse_report_up();
00219    }
00220    if (Is_mouse_down_event()) {
00221       Hid_mouse_report_down();
00222    }
00223 
00224    // Check report
00225    if((0==g_hid_mouse_report[0])
00226    && (0==g_hid_mouse_report[1])
00227    && (0==g_hid_mouse_report[2])
00228    && (0==g_hid_mouse_report[3]))
00229    {
00230       return FALSE;  // No event
00231    }
00232    return TRUE;      // Event(s) occurs
00233 }

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void device_mouse_task_init ( void   ) 

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

Definition at line 114 of file device_mouse_task.c.

00115 {
00116    // Init SOF
00117    Usb_enable_sof_interrupt();
00118 
00119    // Init interface board
00120    Joy_init();
00121    Leds_init();
00122    Hwb_button_init();
00123    
00124    // Send a ack report at startup
00125    g_b_send_report      = FALSE;
00126    g_b_send_ack_report  = TRUE;
00127 }

void device_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 132 of file device_mouse_task.c.

00133 {
00134    if(Is_usb_id_device())
00135    {
00136       Usb_enable_sof_interrupt();   // In case of interrupt disabled when USB ID pin change
00137    }
00138 }

void device_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 147 of file device_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_device_mouse_event(), Is_usb_write_enabled, TRUE, Usb_ack_in_ready, Usb_select_endpoint, and Usb_write_byte.

Referenced by sof_action().

00148 {
00149    if(!Is_device_enumerated())
00150       return;  // Device not ready
00151    
00152    if(!g_b_send_report)
00153    {
00154       // No report sending on going then check mouse event to eventualy fill a new report
00155       if(is_device_mouse_event())
00156       {
00157          // Enable sending of report
00158          g_b_send_report      = TRUE;
00159       }
00160    }
00161    
00162    if((!g_b_send_report)&&(!g_b_send_ack_report))
00163       return;  // No report and ack to send
00164    
00165    //** A report or ack must be send
00166    Usb_select_endpoint(EP_MOUSE_IN);
00167    if(!Is_usb_write_enabled())
00168       return;  // Endpoint no free
00169    
00170    if( g_b_send_report )
00171    {
00172       g_b_send_report      = FALSE;
00173       // Send an ack after a "clic" report only
00174       g_b_send_ack_report = (0!=g_hid_mouse_report[0]);
00175    }
00176    else
00177    {
00178       Hid_mouse_report_reset();     // Reset report to have a ack report
00179       g_b_send_ack_report  = FALSE;
00180    }
00181    // Send report
00182    Usb_write_byte(g_hid_mouse_report[0]);
00183    Usb_write_byte(g_hid_mouse_report[1]);
00184    Usb_write_byte(g_hid_mouse_report[2]);
00185    Usb_write_byte(g_hid_mouse_report[3]);
00186    Usb_ack_in_ready();
00187 }

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Variable Documentation

Bool g_b_send_report

Used to flag a report ready to send.

Definition at line 102 of file device_mouse_task.c.

Referenced by device_mouse_task_by_IT(), and device_mouse_task_init().

Bool g_b_send_ack_report

Used to flag a ack report ready to send.

Definition at line 104 of file device_mouse_task.c.

Referenced by device_mouse_task_by_IT(), and device_mouse_task_init().

U8 g_hid_mouse_report[4]

Used to store the HID mouse report.

Definition at line 106 of file device_mouse_task.c.

Referenced by device_mouse_task_by_IT(), and is_device_mouse_event().

volatile U8 g_u8_cpt_sof = 0

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

Definition at line 108 of file device_mouse_task.c.

Referenced by sof_action().

volatile U16 g_u16_cpt2_sof = 0

Definition at line 109 of file device_mouse_task.c.

Referenced by hid_report_in(), and sof_action().

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