164 lines
4.7 KiB
C
164 lines
4.7 KiB
C
/*----------------------------------------------------------------------------
|
|
* Name: vcomdemo.c
|
|
* Purpose: USB virtual COM port Demo
|
|
* Version: V1.02
|
|
*----------------------------------------------------------------------------
|
|
* This software is supplied "AS IS" without any warranties, express,
|
|
* implied or statutory, including but not limited to the implied
|
|
* warranties of fitness for purpose, satisfactory quality and
|
|
* noninfringement. Keil extends you a royalty-free right to reproduce
|
|
* and distribute executable files created using this software for use
|
|
* on NXP Semiconductors LPC microcontroller devices only. Nothing else
|
|
* gives you the right to use this software.
|
|
*
|
|
* Copyright (c) 2009 Keil - An ARM Company. All rights reserved.
|
|
*---------------------------------------------------------------------------*/
|
|
|
|
#include "LPC13xx.h"
|
|
#include "type.h"
|
|
|
|
#include "usb.h"
|
|
#include "usbcfg.h"
|
|
#include "usbhw.h"
|
|
#include "usbcore.h"
|
|
#include "cdc.h"
|
|
#include "cdcuser.h"
|
|
#include "uart.h"
|
|
#include "vcomdemo.h"
|
|
#include "mscuser.h"
|
|
#include "memory.h"
|
|
#include "stdio.h"
|
|
#include "string.h"
|
|
#include "debug_printf.h"
|
|
|
|
extern uint8_t Memory[MSC_MemorySize]; /* MSC Memory in RAM */
|
|
|
|
#define EN_TIMER32_1 (1<<10)
|
|
#define EN_IOCON (1<<16)
|
|
#define EN_USBREG (1<<14)
|
|
|
|
/*----------------------------------------------------------------------------
|
|
Initializes the VCOM port.
|
|
Call this function before using VCOM_putchar or VCOM_getchar
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
VCOM_Init (void)
|
|
{
|
|
|
|
CDC_Init ();
|
|
}
|
|
|
|
|
|
/*----------------------------------------------------------------------------
|
|
Reads character from serial port buffer and writes to USB buffer
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
VCOM_Serial2Usb (void)
|
|
{
|
|
int numBytesRead;
|
|
|
|
if (UARTCount > 0)
|
|
{
|
|
if (CDC_DepInEmpty)
|
|
{
|
|
numBytesRead = (UARTCount<USB_CDC_BUFSIZE)?UARTCount:USB_CDC_BUFSIZE;
|
|
|
|
CDC_DepInEmpty = 0;
|
|
USB_WriteEP (CDC_DEP_IN, (uint8_t*)&UARTBuffer, numBytesRead);
|
|
UARTCount=0;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
Reads character from USB buffer and writes to serial port buffer
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
VCOM_Usb2Serial (void)
|
|
{
|
|
static char serBuf[32];
|
|
int numBytesToRead, numBytesRead, numAvailByte;
|
|
|
|
CDC_OutBufAvailChar (&numAvailByte);
|
|
if (numAvailByte > 0)
|
|
{
|
|
numBytesToRead = numAvailByte > 32 ? 32 : numAvailByte;
|
|
numBytesRead = CDC_RdOutBuf (&serBuf[0], &numBytesToRead);
|
|
UARTSend ((uint8_t*)&serBuf, numBytesRead);
|
|
}
|
|
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
Reads character from USB buffer and writes to serial port buffer
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
VCOM_Usb2SerialTest (void)
|
|
{
|
|
debug_printf("Hello World!\n");
|
|
}
|
|
|
|
|
|
/*----------------------------------------------------------------------------
|
|
checks the serial state and initiates notification
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
VCOM_CheckSerialState (void)
|
|
{
|
|
unsigned short temp;
|
|
static unsigned short serialState;
|
|
|
|
temp = CDC_GetSerialState ();
|
|
if (serialState != temp)
|
|
{
|
|
serialState = temp;
|
|
CDC_NotificationIn (); // send SERIAL_STATE notification
|
|
}
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
Main Program
|
|
*---------------------------------------------------------------------------*/
|
|
int
|
|
main (void)
|
|
{
|
|
uint32_t n;
|
|
|
|
for (n = 0; n < MSC_ImageSize; n++)
|
|
{ /* Copy Initial Disk Image */
|
|
Memory[n] = DiskImage[n]; /* from Flash to RAM */
|
|
}
|
|
|
|
/* Basic chip initialization is taken care of in SystemInit() called
|
|
* from the startup code. SystemInit() and chip settings are defined
|
|
* in the CMSIS system_<part family>.c file.
|
|
*/
|
|
|
|
/* Enable Timer32_1, IOCON, and USB blocks */
|
|
LPC_SYSCON->SYSAHBCLKCTRL |= (EN_TIMER32_1 | EN_IOCON | EN_USBREG);
|
|
|
|
|
|
USBIOClkConfig ();
|
|
|
|
VCOM_Init (); // VCOM Initialization
|
|
|
|
USB_Init (); // USB Initialization
|
|
USB_Connect (TRUE); // USB Connect
|
|
|
|
while (!USB_Configuration); // wait until USB is configured
|
|
|
|
/* NVIC is installed inside UARTInit file. */
|
|
SystemCoreClockUpdate ();
|
|
UARTInit (115200, 0);
|
|
|
|
VCOM_Usb2SerialTest ();
|
|
|
|
while (1)
|
|
{ // Loop forever
|
|
VCOM_Serial2Usb (); // read serial port and initiate USB event
|
|
VCOM_CheckSerialState ();
|
|
VCOM_Usb2Serial ();
|
|
} // end while
|
|
} // end main ()
|