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 "lib_mcu/adc/adc_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_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.
U16 g_u16_pos_scroll
 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 201 of file device_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 device_mouse_task_by_IT().

00202 {
00203    Hid_mouse_report_reset();
00204    
00205    // Check Click events
00206    if(Is_mouse_click_left_event()) {
00207       Hid_mouse_report_click_left();
00208    }
00209    if(Is_mouse_click_middle_event()) {
00210       Hid_mouse_report_click_middle();
00211    }
00212    if(Is_mouse_click_right_event()) {
00213       Hid_mouse_report_click_right();
00214    }
00215 
00216    // Check Mouve events
00217    if (Is_mouse_left_event()) {
00218       Hid_mouse_report_left();
00219    }
00220    if (Is_mouse_right_event()) {
00221       Hid_mouse_report_right();
00222    }
00223    if (Is_mouse_up_event()) {
00224       Hid_mouse_report_up();
00225    }
00226    if (Is_mouse_down_event()) {
00227       Hid_mouse_report_down();
00228    }
00229 
00230    if (Is_mouse_scroll_up_event()) {
00231       g_u16_pos_scroll+=SCROLL_STEP;
00232       Hid_mouse_report_scroll_up();
00233    }
00234    if (Is_mouse_scroll_down_event()) {
00235       g_u16_pos_scroll-=SCROLL_STEP;
00236       Hid_mouse_report_scroll_down();
00237    }
00238 
00239    // Check report
00240    if((0==g_hid_mouse_report[0])
00241    && (0==g_hid_mouse_report[1])
00242    && (0==g_hid_mouse_report[2])
00243    && (0==g_hid_mouse_report[3]))
00244    {
00245       return FALSE;  // No event
00246    }
00247    return TRUE;      // Event(s) occurs
00248 }

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void device_mouse_task_init ( void   ) 

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

Definition at line 118 of file device_mouse_task.c.

00119 {
00120    // Init SOF
00121    Usb_enable_sof_interrupt();
00122 
00123    // Init interface board
00124    Joy_init();
00125    Leds_init();
00126    Hwb_button_init();
00127    init_adc();
00128    g_u16_pos_scroll=Get_adc_pot_val();
00129    
00130    // Send a ack report at startup
00131    g_b_send_report      = FALSE;
00132    g_b_send_ack_report  = TRUE;
00133 }

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 138 of file device_mouse_task.c.

00139 {
00140    if(Is_usb_id_device())
00141    {
00142       Usb_enable_sof_interrupt();   // In case of interrupt disabled when USB ID pin change
00143    }
00144 }

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 153 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().

00154 {
00155    if(!Is_device_enumerated())
00156       return;  // Device not ready
00157    
00158    if(!g_b_send_report)
00159    {
00160       // No report sending on going then check mouse event to eventualy fill a new report
00161       if(is_device_mouse_event())
00162       {
00163          // Enable sending of report
00164          g_b_send_report      = TRUE;
00165       }
00166    }
00167    
00168    if((!g_b_send_report)&&(!g_b_send_ack_report))
00169       return;  // No report and ack to send
00170    
00171    //** A report or ack must be send
00172    Usb_select_endpoint(EP_MOUSE_IN);
00173    if(!Is_usb_write_enabled())
00174       return;  // Endpoint no free
00175    
00176    if( g_b_send_report )
00177    {
00178       g_b_send_report      = FALSE;
00179       // Send an ack after a "clic" report only
00180       g_b_send_ack_report = (0!=g_hid_mouse_report[0]);
00181    }
00182    else
00183    {
00184       Hid_mouse_report_reset();     // Reset report to have a ack report
00185       g_b_send_ack_report  = FALSE;
00186    }
00187    // Send report
00188    Usb_write_byte(g_hid_mouse_report[0]);
00189    Usb_write_byte(g_hid_mouse_report[1]);
00190    Usb_write_byte(g_hid_mouse_report[2]);
00191    Usb_write_byte(g_hid_mouse_report[3]);
00192    Usb_ack_in_ready();
00193 }

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Variable Documentation

Bool g_b_send_report

Used to flag a 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().

Bool g_b_send_ack_report

Used to flag a ack report ready to send.

Definition at line 106 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 108 of file device_mouse_task.c.

Referenced by device_mouse_task_by_IT(), and is_device_mouse_event().

U16 g_u16_pos_scroll

Used to store the HID mouse report.

Definition at line 110 of file device_mouse_task.c.

Referenced by device_mouse_task_init(), 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 112 of file device_mouse_task.c.

Referenced by sof_action().

volatile U16 g_u16_cpt2_sof = 0

Definition at line 113 of file device_mouse_task.c.

Referenced by hid_report_in(), and sof_action().

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