device_template_task.c File Reference

#include "config.h"
#include "conf_usb.h"
#include "device_template_task.h"
#include "lib_mcu/usb/usb_drv.h"
#include "usb_descriptors.h"
#include "modules/usb/device_chap9/usb_standard_request.h"
#include "lib_mcu/wdt/wdt_drv.h"

Include dependency graph for device_template_task.c:

Go to the source code of this file.

Functions

void device_template_task_init (void)
void device_template_task (void)
void sof_action ()

Variables

volatile U8 cpt_sof
U8 buf [256]
U8 rxok


Detailed Description

This file manages the high level application device task.

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

Definition in file device_template_task.c.


Function Documentation

void device_template_task_init ( void   ) 

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

Parameters:
none 
Returns:
none
/

Definition at line 81 of file device_template_task.c.

00082 {
00083    Joy_init();
00084    Hwb_button_init();
00085    Leds_init();
00086    cpt_sof=0;
00087    Usb_enable_sof_interrupt();
00088    rxok=FALSE;
00089 }

void device_template_task ( void   ) 

Entry point of the device application This function links the application with the USB bus.

Parameters:
none 
Returns:
none

Definition at line 98 of file device_template_task.c.

00099 {
00100    U8 i;
00101    U8 *ptr;
00102    static U8 dummy_data;
00103 
00104    //.. FIRST CHECK THE DEVICE ENUMERATION STATE
00105    if (Is_device_enumerated())
00106    {
00107       //.. HERE START THE USB DEVICE APPLICATIVE CODE
00108       //.. The example bellow just perform a loop back transmition/reception
00109       //.. All data received wth the OUT endpoint are store in a ram buffer and
00110       //.. send back to the IN endpoint
00111 
00112       //.. For example, blink a led with start of frame counter
00113       if(cpt_sof>0x7F)
00114       {  Led0_on(); }
00115       else { Led0_off();}
00116 
00117       //.. First interface management
00118       //.. Select the OUT endpoint declared in descriptors
00119       //.. load the endpoint with the content of a ram buffer for example
00120       Usb_select_endpoint(EP_TEMP_OUT);
00121       if ( Is_usb_receive_out())
00122       {
00123          ptr=buf;
00124          for(i=Usb_byte_counter();i;i--)
00125          {
00126             *ptr++=Usb_read_byte();
00127          }
00128          Usb_ack_receive_out();
00129          rxok=TRUE;
00130       }
00131       //.. First interface management (cont)
00132       //.. Select the IN endpoint declared in descriptors
00133       //.. If we receive something, just store in the ram buffer
00134       Usb_select_endpoint(EP_TEMP_IN);
00135       if ( Is_usb_read_control_enabled()&&(rxok==TRUE))
00136       {
00137          ptr=buf;
00138          for(i=0;i<EP_IN_LENGTH_TEMP1;i++)
00139          Usb_write_byte(*ptr++);
00140          Usb_ack_in_ready();
00141          rxok=FALSE;
00142       }
00143 
00144       //.. Second interface management (interrupt IN endpoint)
00145       //.. Just Send dummy data bytes
00146       Usb_select_endpoint(EP_TEMP_INT_IN);    // Select this enpoint
00147       if (Is_usb_write_enabled())             // Check data can be loaded
00148       {                                       // And load dummy data...
00149          Usb_write_byte(dummy_data);
00150          Usb_write_byte(dummy_data+1);
00151          Usb_write_byte(dummy_data+2);
00152          Usb_write_byte(dummy_data+3);
00153          Usb_ack_in_ready();
00154          dummy_data+=4;
00155       }
00156    }
00157 }


Variable Documentation

volatile U8 cpt_sof

Definition at line 65 of file device_template_task.c.

Referenced by device_template_task(), device_template_task_init(), and sof_action().

U8 buf[256]

Definition at line 67 of file device_template_task.c.

Referenced by device_template_task().

U8 rxok

Definition at line 68 of file device_template_task.c.

Referenced by device_template_task(), and device_template_task_init().


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