352 lines
13 KiB
C
352 lines
13 KiB
C
|
/*----------------------------------------------------------------------------
|
||
|
|
* U S B - K e r n e l
|
||
|
|
*----------------------------------------------------------------------------
|
||
|
|
* Name: cdcuser.c
|
||
|
|
* Purpose: USB Communication Device Class User module
|
||
|
|
* Version: V1.10
|
||
|
|
*----------------------------------------------------------------------------
|
||
|
|
* 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 "projectconfig.h"
|
||
|
|
|
||
|
|
#include "usb.h"
|
||
|
|
#include "usbhw.h"
|
||
|
|
#include "usbcfg.h"
|
||
|
|
#include "usbcore.h"
|
||
|
|
#include "cdc.h"
|
||
|
|
#include "cdcuser.h"
|
||
|
|
#include "cdc_buf.h"
|
||
|
|
|
||
|
|
// unsigned char BulkBufIn [64]; // Buffer to store USB IN packet
|
||
|
|
unsigned char BulkBufOut [64]; // Buffer to store USB OUT packet
|
||
|
|
unsigned char NotificationBuf [10];
|
||
|
|
|
||
|
|
CDC_LINE_CODING CDC_LineCoding = {CFG_USBCDC_BAUDRATE, 0, 0, 8};
|
||
|
|
unsigned short CDC_SerialState = 0x0000;
|
||
|
|
unsigned short CDC_DepInEmpty = 1; // Data IN EP is empty
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
We need a buffer for incoming data on USB port because USB receives
|
||
|
|
much faster than UART transmits
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
/* Buffer masks */
|
||
|
|
#define CDC_BUF_SIZE (64) // Output buffer in bytes (power 2)
|
||
|
|
// large enough for file transfer
|
||
|
|
#define CDC_BUF_MASK (CDC_BUF_SIZE-1ul)
|
||
|
|
|
||
|
|
/* Buffer read / write macros */
|
||
|
|
#define CDC_BUF_RESET(cdcBuf) (cdcBuf.rdIdx = cdcBuf.wrIdx = 0)
|
||
|
|
#define CDC_BUF_WR(cdcBuf, dataIn) (cdcBuf.data[CDC_BUF_MASK & cdcBuf.wrIdx++] = (dataIn))
|
||
|
|
#define CDC_BUF_RD(cdcBuf) (cdcBuf.data[CDC_BUF_MASK & cdcBuf.rdIdx++])
|
||
|
|
#define CDC_BUF_EMPTY(cdcBuf) (cdcBuf.rdIdx == cdcBuf.wrIdx)
|
||
|
|
#define CDC_BUF_FULL(cdcBuf) (cdcBuf.rdIdx == cdcBuf.wrIdx+1)
|
||
|
|
#define CDC_BUF_COUNT(cdcBuf) (CDC_BUF_MASK & (cdcBuf.wrIdx - cdcBuf.rdIdx))
|
||
|
|
|
||
|
|
|
||
|
|
// CDC output buffer
|
||
|
|
typedef struct __CDC_BUF_T
|
||
|
|
{
|
||
|
|
unsigned char data[CDC_BUF_SIZE];
|
||
|
|
volatile unsigned int wrIdx;
|
||
|
|
volatile unsigned int rdIdx;
|
||
|
|
} CDC_BUF_T;
|
||
|
|
|
||
|
|
CDC_BUF_T CDC_OutBuf; // buffer for all CDC Out data
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
read data from CDC_OutBuf
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
int CDC_RdOutBuf (char *buffer, const int *length)
|
||
|
|
{
|
||
|
|
int bytesToRead, bytesRead;
|
||
|
|
|
||
|
|
/* Read *length bytes, block if *bytes are not avaialable */
|
||
|
|
bytesToRead = *length;
|
||
|
|
bytesToRead = (bytesToRead < (*length)) ? bytesToRead : (*length);
|
||
|
|
bytesRead = bytesToRead;
|
||
|
|
|
||
|
|
|
||
|
|
// ... add code to check for underrun
|
||
|
|
|
||
|
|
while (bytesToRead--) {
|
||
|
|
*buffer++ = CDC_BUF_RD(CDC_OutBuf);
|
||
|
|
}
|
||
|
|
return (bytesRead);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
write data to CDC_OutBuf
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
int CDC_WrOutBuf (const char *buffer, int *length)
|
||
|
|
{
|
||
|
|
int bytesToWrite, bytesWritten;
|
||
|
|
|
||
|
|
// Write *length bytes
|
||
|
|
bytesToWrite = *length;
|
||
|
|
bytesWritten = bytesToWrite;
|
||
|
|
|
||
|
|
|
||
|
|
// ... add code to check for overwrite
|
||
|
|
|
||
|
|
while (bytesToWrite) {
|
||
|
|
CDC_BUF_WR(CDC_OutBuf, *buffer++); // Copy Data to buffer
|
||
|
|
bytesToWrite--;
|
||
|
|
}
|
||
|
|
|
||
|
|
return (bytesWritten);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
check if character(s) are available at CDC_OutBuf
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
int CDC_OutBufAvailChar (int *availChar)
|
||
|
|
{
|
||
|
|
*availChar = CDC_BUF_COUNT(CDC_OutBuf);
|
||
|
|
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
/* end Buffer handling */
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
CDC Initialisation
|
||
|
|
Initializes the data structures and serial port
|
||
|
|
Parameters: None
|
||
|
|
Return Value: None
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
void CDC_Init (void)
|
||
|
|
{
|
||
|
|
CDC_DepInEmpty = 1;
|
||
|
|
CDC_SerialState = CDC_GetSerialState();
|
||
|
|
|
||
|
|
CDC_BUF_RESET(CDC_OutBuf);
|
||
|
|
|
||
|
|
// Initialise the CDC buffer. This is required to buffer outgoing
|
||
|
|
// data (MCU to PC) since data can only be sent 64 bytes per frame
|
||
|
|
// with at least 1ms between frames. To see how the buffer is used,
|
||
|
|
// see 'puts' in systeminit.c
|
||
|
|
cdcBufferInit();
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
CDC SendEncapsulatedCommand Request Callback
|
||
|
|
Called automatically on CDC SEND_ENCAPSULATED_COMMAND Request
|
||
|
|
Parameters: None (global SetupPacket and EP0Buf)
|
||
|
|
Return Value: TRUE - Success, FALSE - Error
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
uint32_t CDC_SendEncapsulatedCommand (void)
|
||
|
|
{
|
||
|
|
return (TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
CDC GetEncapsulatedResponse Request Callback
|
||
|
|
Called automatically on CDC Get_ENCAPSULATED_RESPONSE Request
|
||
|
|
Parameters: None (global SetupPacket and EP0Buf)
|
||
|
|
Return Value: TRUE - Success, FALSE - Error
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
uint32_t CDC_GetEncapsulatedResponse (void)
|
||
|
|
{
|
||
|
|
/* ... add code to handle request */
|
||
|
|
return (TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
CDC SetCommFeature Request Callback
|
||
|
|
Called automatically on CDC Set_COMM_FATURE Request
|
||
|
|
Parameters: FeatureSelector
|
||
|
|
Return Value: TRUE - Success, FALSE - Error
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
uint32_t CDC_SetCommFeature (unsigned short wFeatureSelector)
|
||
|
|
{
|
||
|
|
/* ... add code to handle request */
|
||
|
|
return (TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
CDC GetCommFeature Request Callback
|
||
|
|
Called automatically on CDC Get_COMM_FATURE Request
|
||
|
|
Parameters: FeatureSelector
|
||
|
|
Return Value: TRUE - Success, FALSE - Error
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
uint32_t CDC_GetCommFeature (unsigned short wFeatureSelector)
|
||
|
|
{
|
||
|
|
/* ... add code to handle request */
|
||
|
|
return (TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
CDC ClearCommFeature Request Callback
|
||
|
|
Called automatically on CDC CLEAR_COMM_FATURE Request
|
||
|
|
Parameters: FeatureSelector
|
||
|
|
Return Value: TRUE - Success, FALSE - Error
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
uint32_t CDC_ClearCommFeature (unsigned short wFeatureSelector)
|
||
|
|
{
|
||
|
|
/* ... add code to handle request */
|
||
|
|
return (TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
CDC SetLineCoding Request Callback
|
||
|
|
Called automatically on CDC SET_LINE_CODING Request
|
||
|
|
Parameters: none (global SetupPacket and EP0Buf)
|
||
|
|
Return Value: TRUE - Success, FALSE - Error
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
uint32_t CDC_SetLineCoding (void)
|
||
|
|
{
|
||
|
|
CDC_LineCoding.dwDTERate = (EP0Buf[0] << 0)
|
||
|
|
| (EP0Buf[1] << 8)
|
||
|
|
| (EP0Buf[2] << 16)
|
||
|
|
| (EP0Buf[3] << 24);
|
||
|
|
CDC_LineCoding.bCharFormat = EP0Buf[4];
|
||
|
|
CDC_LineCoding.bParityType = EP0Buf[5];
|
||
|
|
CDC_LineCoding.bDataBits = EP0Buf[6];
|
||
|
|
|
||
|
|
return (TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
CDC GetLineCoding Request Callback
|
||
|
|
Called automatically on CDC GET_LINE_CODING Request
|
||
|
|
Parameters: None (global SetupPacket and EP0Buf)
|
||
|
|
Return Value: TRUE - Success, FALSE - Error
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
uint32_t CDC_GetLineCoding (void)
|
||
|
|
{
|
||
|
|
EP0Buf[0] = (CDC_LineCoding.dwDTERate >> 0) & 0xFF;
|
||
|
|
EP0Buf[1] = (CDC_LineCoding.dwDTERate >> 8) & 0xFF;
|
||
|
|
EP0Buf[2] = (CDC_LineCoding.dwDTERate >> 16) & 0xFF;
|
||
|
|
EP0Buf[3] = (CDC_LineCoding.dwDTERate >> 24) & 0xFF;
|
||
|
|
EP0Buf[4] = CDC_LineCoding.bCharFormat;
|
||
|
|
EP0Buf[5] = CDC_LineCoding.bParityType;
|
||
|
|
EP0Buf[6] = CDC_LineCoding.bDataBits;
|
||
|
|
|
||
|
|
return (TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
CDC SetControlLineState Request Callback
|
||
|
|
Called automatically on CDC SET_CONTROL_LINE_STATE Request
|
||
|
|
Parameters: ControlSignalBitmap
|
||
|
|
Return Value: TRUE - Success, FALSE - Error
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
uint32_t CDC_SetControlLineState (unsigned short wControlSignalBitmap) {
|
||
|
|
|
||
|
|
/* ... add code to handle request */
|
||
|
|
return (TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
CDC SendBreak Request Callback
|
||
|
|
Called automatically on CDC Set_COMM_FATURE Request
|
||
|
|
Parameters: 0xFFFF start of Break
|
||
|
|
0x0000 stop of Break
|
||
|
|
0x#### Duration of Break
|
||
|
|
Return Value: TRUE - Success, FALSE - Error
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
uint32_t CDC_SendBreak (unsigned short wDurationOfBreak) {
|
||
|
|
|
||
|
|
/* ... add code to handle request */
|
||
|
|
return (TRUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
CDC_BulkIn call on DataIn Request
|
||
|
|
Parameters: none
|
||
|
|
Return Value: none
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
void CDC_BulkIn(void)
|
||
|
|
{
|
||
|
|
// int numBytesRead, numBytesAvail;
|
||
|
|
//
|
||
|
|
// // ToDo: Modify BulkIn to send incoming data to USB
|
||
|
|
//
|
||
|
|
// ser_AvailChar (&numBytesAvail);
|
||
|
|
//
|
||
|
|
// // ... add code to check for overwrite
|
||
|
|
//
|
||
|
|
// numBytesRead = ser_Read ((char *)&BulkBufIn[0], &numBytesAvail);
|
||
|
|
//
|
||
|
|
// // send over USB
|
||
|
|
// if (numBytesRead > 0) {
|
||
|
|
// USB_WriteEP (CDC_DEP_IN, &BulkBufIn[0], numBytesRead);
|
||
|
|
// }
|
||
|
|
// else {
|
||
|
|
// CDC_DepInEmpty = 1;
|
||
|
|
// }
|
||
|
|
//
|
||
|
|
//
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
CDC_BulkOut call on DataOut Request
|
||
|
|
Parameters: none
|
||
|
|
Return Value: none
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
void CDC_BulkOut(void)
|
||
|
|
{
|
||
|
|
int numBytesRead;
|
||
|
|
|
||
|
|
// get data from USB into intermediate buffer
|
||
|
|
numBytesRead = USB_ReadEP(CDC_DEP_OUT, &BulkBufOut[0]);
|
||
|
|
|
||
|
|
// ... add code to check for overwrite
|
||
|
|
|
||
|
|
// store data in a buffer to transmit it over serial interface
|
||
|
|
CDC_WrOutBuf ((char *)&BulkBufOut[0], &numBytesRead);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
Get the SERIAL_STATE as defined in usbcdc11.pdf, 6.3.5, Table 69.
|
||
|
|
Parameters: none
|
||
|
|
Return Value: SerialState as defined in usbcdc11.pdf
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
unsigned short CDC_GetSerialState (void)
|
||
|
|
{
|
||
|
|
CDC_SerialState = 0;
|
||
|
|
|
||
|
|
return (CDC_SerialState);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*----------------------------------------------------------------------------
|
||
|
|
Send the SERIAL_STATE notification as defined in usbcdc11.pdf, 6.3.5.
|
||
|
|
*---------------------------------------------------------------------------*/
|
||
|
|
void CDC_NotificationIn (void)
|
||
|
|
{
|
||
|
|
NotificationBuf[0] = 0xA1; // bmRequestType
|
||
|
|
NotificationBuf[1] = CDC_NOTIFICATION_SERIAL_STATE; // bNotification (SERIAL_STATE)
|
||
|
|
NotificationBuf[2] = 0x00; // wValue
|
||
|
|
NotificationBuf[3] = 0x00;
|
||
|
|
NotificationBuf[4] = 0x00; // wIndex (Interface #, LSB first)
|
||
|
|
NotificationBuf[5] = 0x00;
|
||
|
|
NotificationBuf[6] = 0x02; // wLength (Data length = 2 bytes, LSB first)
|
||
|
|
NotificationBuf[7] = 0x00;
|
||
|
|
NotificationBuf[8] = (CDC_SerialState >> 0) & 0xFF; // UART State Bitmap (16bits, LSB first)
|
||
|
|
NotificationBuf[9] = (CDC_SerialState >> 8) & 0xFF;
|
||
|
|
|
||
|
|
USB_WriteEP (CDC_CEP_IN, &NotificationBuf[0], 10); // send notification
|
||
|
|
}
|