Hola a todos, tengo que conectar el pic por usb al pc usando el ejemplo que tiene el CCS, el que genera un puerto COMx virtual al conectar el cable usb, el ejemplo esta hecho segun me parece, para otro pic, alguien sabe como adaptarlo al 18F4455?
este es el codigo que tiene el .c que aparece en la carpeta ejemlos.
/////////////////////////////////////////////////////////////////////////
//// ////
//// ex_usb_serial.c ////
//// ////
//// A demonstration of the USB CDC API that is provided by CCS. ////
//// The USB CDC API that CCS provides will create a virtual UART ////
//// port. USB CDC drivers are included with most versions of ////
//// Microsoft Windows, and when properly loaded will create a COMx ////
//// port from which you can write and read to your PIC device ////
//// like any serial device that has a COMx port. ////
//// ////
//// This example creates a USB<->UART converter. Open ////
//// Hyperterminal to COM1 (or whatever COM port is your usual RS232 ////
//// serial COM port). Plug the PIC to USB. Open Hypertimernal to ////
//// the new COM port that is the USB<->UART COM port (for this ////
//// example say it is COM2). Typing a character in COM1 will cause ////
//// it to be sent out COM2, and vice-versa. ////
//// ////
//// See usb_cdc.h for API documentation. ////
//// ////
/////////////////////////////////////////////////////////////////////////
//// ////
//// VERSION HISTORY ////
//// ////
//// July 1st, 2005: Initial Release. ////
//// ////
/////////////////////////////////////////////////////////////////////////
//// (C) Copyright 1996,2005 Custom Computer Services ////
//// This source code may only be used by licensed users of the CCS ////
//// C compiler. This source code may only be distributed to other ////
//// licensed users of the CCS C compiler. No other use, ////
//// reproduction or distribution is permitted without written ////
//// permission. Derivative programs created using this software ////
//// in object code form are not restricted in any way. ////
/////////////////////////////////////////////////////////////////////////
//set to 1 to use a PIC's internal USB Peripheral
//set to 0 to use a National USBN960x peripheral
#define __USB_PIC_PERIF__ 1
#if !defined(__PCH__)
#error USB CDC Library requires PIC18
#endif
#if __USB_PIC_PERIF__
#DEFINE LED1 PIN_A5
#include <18F4550.h>
#fuses HSPLL,NOWDT,NOPROTECT,NOLVP,NODEBUG,USBDIV,PLL5,CPUDIV1,VREGEN
#use delay(clock=48000000)
#else //use the National USBN960x peripheral
#DEFINE LED1 PIN_B3
#include <18F4455.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP
#use delay(clock=20000000)
#endif //endif check to see which peripheral to use
#use rs232(baud=9600, xmit=PIN_C6, rcv=PIN_C7)
/////////////////////////////////////////////////////////////////////////////
//
// If you are using a USB connection sense pin, define it here. If you are
// not using connection sense, comment out this line. Without connection
// sense you will not know if the device gets disconnected.
// (connection sense should look like this:
// 100k
// VBUS-----+----/\/\/\/\/\----- (I/O PIN ON PIC)
// |
// +----/\/\/\/\/\-----GND
// 100k
// (where VBUS is pin1 of the USB connector)
//
/////////////////////////////////////////////////////////////////////////////
///only the 18F4550 development kit has this pin
#if __USB_PIC_PERIF__ && defined(__PCH__)
#define USB_CON_SENSE_PIN PIN_B2
#endif
#include <usb_cdc.h>
/////////////////////////////////////////////////////////////////////////////
//
// Configure the demonstration I/O
//
/////////////////////////////////////////////////////////////////////////////
#define LED2 PIN_B4
#define LED3 PIN_B5
#DEFINE BUTTON PIN_A4
#define LED_ON output_low
#define LED_OFF output_high
/////////////////////////////////////////////////////////////////////////////
//
// usb_debug_task()
//
// When called periodically, displays debugging information over serial
// to display enumeration and connection states. Also lights LED1 based upon
// enumeration and status.
//
/////////////////////////////////////////////////////////////////////////////
void usb_debug_task(void) {
static int8 last_connected;
static int8 last_enumerated;
int8 new_connected;
int8 new_enumerated;
static int8 last_cdc;
int8 new_cdc;
new_connected=usb_attached();
new_enumerated=usb_enumerated();
new_cdc=usb_cdc_connected();
if (new_enumerated)
LED_ON(LED1);
else
LED_OFF(LED1);
if (new_cdc)
LED_ON(LED2);
else
LED_OFF(LED2);
if (usb_cdc_carrier.dte_present)
LED_ON(LED3);
else
LED_OFF(LED3);
if (new_connected && !last_connected)
printf("USB connected, waiting for enumaration...\r\n\n");
if (!new_connected && last_connected)
printf("USB disconnected, waiting for connection...\r\n\n");
if (new_enumerated && !last_enumerated)
printf("USB enumerated by PC/HOST\r\n\n");
if (!new_enumerated && last_enumerated)
printf("USB unenumerated by PC/HOST, waiting for enumeration...\r\n\n");
if (new_cdc && !last_cdc) {
printf("Serial program initiated on USB<->UART COM Port\r\n\n");
printf(usb_cdc_putc, "\r\n\nCCS CDC (Virtual RS232) Example\r\n\n");
}
last_connected=new_connected;
last_enumerated=new_enumerated;
last_cdc=new_cdc;
}
void main(void) {
char c;
LED_OFF(LED1);
LED_OFF(LED2);
LED_OFF(LED3);
printf("\r\n\nCCS CDC (Virtual RS232) Example\r\n");
#ifdef __PCH__
printf("PCH: v");
printf(__PCH__);
#else
printf("PCM: v");
printf(__PCM__);
#endif
printf("\r\n");
usb_init_cs();
#if !(__USB_PIC_PERIF__)
printf("USBN: 0x%X", usbn_get_version());
printf("\r\n\n");
#endif
while (TRUE) {
usb_task();
usb_debug_task();
if (kbhit()) {
c=getc();
if (c=='\n') {usb_cdc_putc('\r'); usb_cdc_putc('\n');}
if (c=='\r') {usb_cdc_putc('\r'); usb_cdc_putc('\n');}
else {usb_cdc_putc(c);}
}
if (usb_cdc_kbhit()) {
c=usb_cdc_getc();
if (c=='\n') {putc('\r'); putc('\n');}
if (c=='\r') {putc('\r'); putc('\n');}
else {putc(c);}
}
}
}
gracias por su ayuda
