cdc_task.c

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00013 
00014 /* Copyright (c) 2009 Atmel Corporation. All rights reserved.
00015  *
00016  * Redistribution and use in source and binary forms, with or without
00017  * modification, are permitted provided that the following conditions are met:
00018  *
00019  * 1. Redistributions of source code must retain the above copyright notice,
00020  * this list of conditions and the following disclaimer.
00021  *
00022  * 2. Redistributions in binary form must reproduce the above copyright notice,
00023  * this list of conditions and the following disclaimer in the documentation
00024  * and/or other materials provided with the distribution.
00025  *
00026  * 3. The name of Atmel may not be used to endorse or promote products derived
00027  * from this software without specific prior written permission.
00028  *
00029  * 4. This software may only be redistributed and used in connection with an Atmel
00030  * AVR product.
00031  *
00032  * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
00033  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
00034  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE EXPRESSLY AND
00035  * SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
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00041  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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00043 
00044 //_____  I N C L U D E S ___________________________________________________
00045 
00046 #include "config.h"
00047 #include "conf_usb.h"
00048 #include "cdc_task.h"
00049 #include "lib_mcu/usb/usb_drv.h"
00050 #include "usb_descriptors.h"
00051 #include "modules/usb/device_chap9/usb_standard_request.h"
00052 #include "usb_specific_request.h"
00053 #include "lib_mcu/uart/uart_lib.h"
00054 #include "uart_usb_lib.h"
00055 #include "lib_mcu/util/start_boot.h"
00056 #include <stdio.h>
00057 
00058 
00059 //_____ M A C R O S ________________________________________________________
00060 
00061 
00062 
00063 //_____ D E F I N I T I O N S ______________________________________________
00064 
00065 
00066 
00067 //_____ D E C L A R A T I O N S ____________________________________________
00068 
00069 
00070 volatile U8 cpt_sof;
00071 extern U8    rx_counter;
00072 extern U8    tx_counter;
00073 extern volatile U8 usb_request_break_generation;
00074 
00075 S_line_coding line_coding;
00076 S_line_status line_status;      // for detection of serial state input lines
00077 S_serial_state serial_state;   // for serial state output lines
00078 
00079 volatile U8 rs2usb[10];
00080 
00081 
00090 void cdc_task_init(void)
00091 {
00092    uart_init();
00093    Uart_enable_it_rx();
00094    Leds_init();
00095    Joy_init();
00096    Hwb_button_init();
00097    Usb_enable_sof_interrupt();
00098 #ifdef __GNUC__
00099    fdevopen((int (*)(char, FILE*))(uart_usb_putchar),(int (*)(FILE*))uart_usb_getchar); //for printf redirection
00100 #endif
00101 }
00102 
00103 
00104 
00112 void cdc_task(void)
00113 {
00114       
00115    if(Is_device_enumerated() && line_status.DTR) //Enumeration processs OK and COM port openned ?
00116         {
00117       if (Uart_tx_ready())    //USART free ?
00118       {
00119          if (uart_usb_test_hit())   // Something received from the USB ?
00120          {
00121              while (rx_counter)
00122             {
00123                uart_putchar(uart_usb_getchar());   // loop back USB to USART
00124                Led1_toggle();
00125             }
00126          }
00127       }
00128 
00129       if ( cpt_sof>=REPEAT_KEY_PRESSED)   //Debounce joystick events
00130       {
00131          if (Is_joy_select()) {
00132          printf ("Select Pressed !\r\n");
00133          }
00134          if (Is_joy_right()) {
00135             printf ("Right Pressed !\r\n");
00136             serial_state.bDCD = TRUE;
00137          }
00138          else
00139             serial_state.bDCD = FALSE;
00140 
00141          if (Is_joy_left()) {
00142             printf ("Left Pressed !\r\n");
00143             serial_state.bDSR = TRUE;
00144          }
00145          else
00146             serial_state.bDSR = FALSE;
00147 
00148          if (Is_joy_down())
00149          printf ("Down Pressed !\r\n");
00150 
00151          if (Is_joy_up())
00152          printf ("Up Pressed !\r\n");
00153 
00154          if(Is_hwb())
00155          printf("Hello from ATmega32U4 !\r\n");
00156          
00157          cdc_update_serial_state();
00158       }
00159 
00160       if(usb_request_break_generation==TRUE)
00161       {
00162          U32 volatile tempo;
00163          usb_request_break_generation=FALSE;
00164          Led2_toggle();
00165          Usb_detach();                          // Detach actual USB Device
00166          for(tempo=0;tempo<70000;tempo++);      // Wait some time before
00167          start_boot();                          // Jumping to booltoader
00168       }
00169    }
00170 }
00171 
00183 void sof_action()
00184 {
00185    cpt_sof++;
00186 }
00187 
00188 
00194 #ifdef __GNUC__
00195  ISR(USART1_RX_vect)
00196 #else
00197 #pragma vector = USART1_RX_vect
00198 __interrupt void usart_receive_interrupt()
00199 #endif
00200 {
00201    U8 i=0;
00202    U8 save_ep;
00203    
00204    if(Is_device_enumerated()) 
00205    {
00206       save_ep=Usb_get_selected_endpoint();   
00207       Usb_select_endpoint(TX_EP);
00208       do 
00209       {
00210          if(Uart_rx_ready())
00211          {
00212             rs2usb[i]=Uart_get_byte();
00213             i++;
00214          }
00215       }while(Is_usb_write_enabled()==FALSE );
00216       uart_usb_send_buffer((U8*)&rs2usb,i);
00217       Usb_select_endpoint(save_ep);
00218    }
00219 }

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