260 lines
10 KiB
C++
260 lines
10 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.
|
|
*---------------------------------------------------------------------------*/
|
|
|
|
extern "C" {
|
|
#include <lpc_types.h>
|
|
#include <debug_frmwrk.h>
|
|
}
|
|
|
|
#include "usb.h"
|
|
#include "usbhw.h"
|
|
#include "usbcfg.h"
|
|
#include "usbcore.h"
|
|
#include "cdc.h"
|
|
#include "cdcuser.h"
|
|
|
|
#include <serial.h>
|
|
|
|
unsigned char BulkBufIn[USB_CDC_BUFSIZE]; // Buffer to store USB IN packet
|
|
unsigned char BulkBufOut[USB_CDC_BUFSIZE]; // Buffer to store USB OUT packet
|
|
unsigned char NotificationBuf[10];
|
|
|
|
CDC_LINE_CODING CDC_LineCoding = { 921600, 0, 0, 8 };
|
|
unsigned short CDC_DepInEmpty = 1; // Data IN EP is empty
|
|
unsigned short CDC_LineState = 0;
|
|
unsigned short CDC_SerialState = 0;
|
|
|
|
extern HalSerial usb_serial;
|
|
/*----------------------------------------------------------------------------
|
|
write data to CDC_OutBuf
|
|
*---------------------------------------------------------------------------*/
|
|
uint32_t CDC_WrOutBuf(const char *buffer, uint32_t *length) {
|
|
uint32_t bytesToWrite, bytesWritten;
|
|
|
|
// Write *length bytes
|
|
bytesToWrite = *length;
|
|
bytesWritten = bytesToWrite;
|
|
|
|
while (bytesToWrite) {
|
|
#if ENABLED(EMERGENCY_PARSER)
|
|
emergency_parser.update(usb_serial.emergency_state, *buffer);
|
|
#endif
|
|
usb_serial.receive_buffer.write(*buffer++); // Copy Data to buffer
|
|
bytesToWrite--;
|
|
}
|
|
|
|
return (bytesWritten);
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
check if character(s) are available at CDC_OutBuf
|
|
*---------------------------------------------------------------------------*/
|
|
uint32_t CDC_OutBufAvailChar(uint32_t *availChar) {
|
|
*availChar = usb_serial.transmit_buffer.available();
|
|
return (0);
|
|
}
|
|
/* end Buffer handling */
|
|
|
|
/*----------------------------------------------------------------------------
|
|
CDC Initialisation
|
|
Initializes the data structures and serial port
|
|
Parameters: None
|
|
Return Value: None
|
|
*---------------------------------------------------------------------------*/
|
|
void CDC_Init() {
|
|
CDC_DepInEmpty = 1;
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
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) {
|
|
CDC_LineState = wControlSignalBitmap;
|
|
usb_serial.host_connected = wControlSignalBitmap > 0 ? true : false;
|
|
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) {
|
|
uint32_t numBytesAvail = usb_serial.transmit_buffer.available();
|
|
|
|
if (numBytesAvail > 0) {
|
|
numBytesAvail = numBytesAvail > (USB_CDC_BUFSIZE - 1) ? (USB_CDC_BUFSIZE - 1) : numBytesAvail;
|
|
for(uint32_t i = 0; i < numBytesAvail; ++i) {
|
|
BulkBufIn[i] = usb_serial.transmit_buffer.read(); //todo: optimise
|
|
}
|
|
USB_WriteEP(CDC_DEP_IN, &BulkBufIn[0], numBytesAvail);
|
|
} else {
|
|
CDC_DepInEmpty = 1;
|
|
}
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------
|
|
CDC_BulkOut call on DataOut Request
|
|
Parameters: none
|
|
Return Value: none
|
|
*---------------------------------------------------------------------------*/
|
|
void CDC_BulkOut(void) {
|
|
uint32_t numBytesRead = USB_ReadEP(CDC_DEP_OUT, &BulkBufOut[0]);
|
|
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 = CDC_LineState;
|
|
//todo: detect buffer overrun
|
|
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
|
|
}
|