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crashtest-r0ket/core/usbcdc/cdcuser.c

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/*----------------------------------------------------------------------------
* 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
}
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