cdc_task.c

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00001 /*This file is prepared for Doxygen automatic documentation generation.*/
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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00037  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
00038  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
00039  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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00041  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00042  */
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 <stdio.h>
00056 
00057 
00058 //_____ M A C R O S ________________________________________________________
00059 
00060 //#define CHECK_CDC_MAX_SPEED
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 #ifdef CHECK_CDC_MAX_SPEED
00082 Bool b_interrupt_init = FALSE;
00083 #endif
00084 
00085 
00094 void cdc_task_init(void)
00095 {
00096    uart_init();
00097    Uart_enable_it_rx();
00098    Leds_init();
00099    Joy_init();
00100    Hwb_button_init();
00101    Usb_enable_sof_interrupt();
00102 #ifdef __GNUC__
00103    fdevopen((int (*)(char, FILE*))(uart_usb_putchar),(int (*)(FILE*))uart_usb_getchar); //for printf redirection
00104 #endif
00105 }
00106 
00114 void cdc_task(void)
00115 {
00116 #ifdef CHECK_CDC_MAX_SPEED
00117    if( Is_device_enumerated() && line_status.DTR ) //Enumeration processs OK and COM port openned ?
00118    {
00119      if( !b_interrupt_init )
00120      {
00121         b_interrupt_init = TRUE;
00122         Usb_select_endpoint(RX_EP);
00123         Usb_enable_receive_out_interrupt();
00124      }
00125      if (Is_joy_down())
00126      {
00127         Usb_select_endpoint(TX_EP);
00128         Usb_enable_in_ready_interrupt();
00129      }else{
00130         Usb_select_endpoint(TX_EP);
00131         Usb_disable_in_ready_interrupt();
00132      }
00133    }
00134 #else
00135    if(Is_device_enumerated() && line_status.DTR) //Enumeration processs OK and COM port openned ?
00136    {
00137       if (Uart_tx_ready())    //USART free ?
00138       {
00139          if (uart_usb_test_hit())   // Something received from the USB ?
00140          {
00141              while (rx_counter)
00142             {
00143                uart_putchar(uart_usb_getchar());   // loop back USB to USART
00144                Led3_toggle();
00145             }
00146          }
00147       }
00148 
00149       if ( cpt_sof>=REPEAT_KEY_PRESSED)   //Debounce joystick events
00150       {
00151          if (Is_btn_middle()){
00152             printf ("Select Pressed !\r\n");
00153          }
00154          if (Is_joy_right()) {
00155             printf ("Right Pressed !\r\n");
00156             serial_state.bDCD = TRUE;
00157          }
00158          else
00159             serial_state.bDCD = FALSE;
00160 
00161          if (Is_joy_left()) {
00162             printf ("Left Pressed !\r\n");
00163             serial_state.bDSR = TRUE;
00164          }
00165          else
00166             serial_state.bDSR = FALSE;
00167 
00168          if (Is_joy_down())
00169          printf ("Down Pressed !\r\n");
00170 
00171          if (Is_joy_up())
00172          printf ("Up Pressed !\r\n");
00173 
00174          if(Is_btn_left())
00175          printf("Hello from AT90USBXXX !\r\n");
00176          
00177          cdc_update_serial_state();
00178       }
00179 
00180       if(usb_request_break_generation==TRUE)
00181       {
00182          usb_request_break_generation=FALSE;
00183          Led2_toggle();
00184       }
00185    }
00186 #endif
00187 }
00188 
00200 void sof_action()
00201 {
00202    cpt_sof++;
00203 }
00204 
00205 
00211 #ifdef __GNUC__
00212  ISR(USART1_RX_vect)
00213 #else
00214 #pragma vector = USART1_RX_vect
00215 __interrupt void usart_receive_interrupt()
00216 #endif
00217 {
00218    U8 i=0;
00219    U8 save_ep;
00220    
00221    if(Is_device_enumerated()) 
00222    {
00223       save_ep=Usb_get_selected_endpoint();   
00224       Usb_select_endpoint(TX_EP);
00225       do 
00226       {
00227          if(Uart_rx_ready())
00228          {
00229             rs2usb[i]=Uart_get_byte();
00230             i++;
00231          }
00232       }while(Is_usb_write_enabled()==FALSE );
00233       uart_usb_send_buffer((U8*)&rs2usb,i);
00234       Usb_select_endpoint(save_ep);
00235    }
00236 }
00237 
00238 
00239 #ifdef CHECK_CDC_MAX_SPEED
00240 #ifdef __GNUC__
00241  ISR(USB_Endpoint_Pipe_vect)
00242 #else
00243 #pragma vector = USB_Endpoint_Pipe_vect
00244 __interrupt void usb_endpoint_interrupt()
00245 #endif
00246 {
00247    U8 rx_counter, data_rx;
00248    U8 save_ep;
00249 
00250    save_ep=Usb_get_selected_endpoint();   
00251 
00252    // Read data received on the endpoint OUT
00253    Usb_select_endpoint(RX_EP);
00254    if (Is_usb_receive_out())
00255    {
00256       for( U8 u8_i=Usb_byte_counter(); u8_i!=0; u8_i-- ) {
00257          data_rx=Usb_read_byte();
00258       }
00259       Usb_ack_receive_out();
00260    }
00261    
00262    if (Is_joy_down())
00263    {   
00264       // Send data on the endpoint IN
00265       Usb_select_endpoint(TX_EP);
00266       if( Is_usb_write_enabled() )
00267       {
00268          for( U8 u8_i=0; u8_i<64; u8_i++ ) {
00269             Usb_write_byte(0x30);
00270          }
00271          Usb_ack_in_ready();
00272       }
00273    }
00274 
00275    Usb_select_endpoint(save_ep);   
00276 }
00277 #endif

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