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258 lines
9.9 KiB
258 lines
9.9 KiB
/*----------------------------------------------------------------------------
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* U S B - K e r n e l
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*----------------------------------------------------------------------------
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* Name: cdcuser.c
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* Purpose: USB Communication Device Class User module
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* Version: V1.10
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*----------------------------------------------------------------------------
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* This software is supplied "AS IS" without any warranties, express,
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* implied or statutory, including but not limited to the implied
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* warranties of fitness for purpose, satisfactory quality and
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* noninfringement. Keil extends you a royalty-free right to reproduce
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* and distribute executable files created using this software for use
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* on NXP Semiconductors LPC microcontroller devices only. Nothing else
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* gives you the right to use this software.
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*
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* Copyright (c) 2009 Keil - An ARM Company. All rights reserved.
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*---------------------------------------------------------------------------*/
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extern "C" {
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#include <lpc_types.h>
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#include <debug_frmwrk.h>
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}
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#include "usb.h"
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#include "usbhw.h"
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#include "usbcfg.h"
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#include "usbcore.h"
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#include "cdc.h"
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#include "cdcuser.h"
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#include <serial.h>
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unsigned char BulkBufIn[USB_CDC_BUFSIZE]; // Buffer to store USB IN packet
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unsigned char BulkBufOut[USB_CDC_BUFSIZE]; // Buffer to store USB OUT packet
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unsigned char NotificationBuf[10];
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CDC_LINE_CODING CDC_LineCoding = { 921600, 0, 0, 8 };
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unsigned short CDC_DepInEmpty = 1; // Data IN EP is empty
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unsigned short CDC_LineState = 0;
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unsigned short CDC_SerialState = 0;
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extern HalSerial usb_serial;
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/*----------------------------------------------------------------------------
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write data to CDC_OutBuf
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*---------------------------------------------------------------------------*/
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uint32_t CDC_WrOutBuf(const char *buffer, uint32_t *length) {
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uint32_t bytesToWrite, bytesWritten;
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// Write *length bytes
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bytesToWrite = *length;
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bytesWritten = bytesToWrite;
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while (bytesToWrite) {
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usb_serial.receive_buffer.write(*buffer++); // Copy Data to buffer
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bytesToWrite--;
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}
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return (bytesWritten);
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}
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/*----------------------------------------------------------------------------
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check if character(s) are available at CDC_OutBuf
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*---------------------------------------------------------------------------*/
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uint32_t CDC_OutBufAvailChar(uint32_t *availChar) {
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*availChar = usb_serial.transmit_buffer.available();
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return (0);
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}
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/* end Buffer handling */
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/*----------------------------------------------------------------------------
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CDC Initialisation
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Initializes the data structures and serial port
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Parameters: None
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Return Value: None
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*---------------------------------------------------------------------------*/
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void CDC_Init() {
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CDC_DepInEmpty = 1;
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}
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/*----------------------------------------------------------------------------
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CDC SendEncapsulatedCommand Request Callback
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Called automatically on CDC SEND_ENCAPSULATED_COMMAND Request
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Parameters: None (global SetupPacket and EP0Buf)
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Return Value: TRUE - Success, FALSE - Error
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*---------------------------------------------------------------------------*/
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uint32_t CDC_SendEncapsulatedCommand(void) {
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return (TRUE);
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}
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/*----------------------------------------------------------------------------
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CDC GetEncapsulatedResponse Request Callback
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Called automatically on CDC Get_ENCAPSULATED_RESPONSE Request
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Parameters: None (global SetupPacket and EP0Buf)
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Return Value: TRUE - Success, FALSE - Error
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*---------------------------------------------------------------------------*/
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uint32_t CDC_GetEncapsulatedResponse(void) {
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/* ... add code to handle request */
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return (TRUE);
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}
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/*----------------------------------------------------------------------------
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CDC SetCommFeature Request Callback
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Called automatically on CDC Set_COMM_FATURE Request
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Parameters: FeatureSelector
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Return Value: TRUE - Success, FALSE - Error
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*---------------------------------------------------------------------------*/
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uint32_t CDC_SetCommFeature(unsigned short wFeatureSelector) {
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/* ... add code to handle request */
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return (TRUE);
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}
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/*----------------------------------------------------------------------------
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CDC GetCommFeature Request Callback
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Called automatically on CDC Get_COMM_FATURE Request
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Parameters: FeatureSelector
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Return Value: TRUE - Success, FALSE - Error
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*---------------------------------------------------------------------------*/
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uint32_t CDC_GetCommFeature(unsigned short wFeatureSelector) {
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/* ... add code to handle request */
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return (TRUE);
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}
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/*----------------------------------------------------------------------------
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CDC ClearCommFeature Request Callback
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Called automatically on CDC CLEAR_COMM_FATURE Request
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Parameters: FeatureSelector
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Return Value: TRUE - Success, FALSE - Error
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*---------------------------------------------------------------------------*/
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uint32_t CDC_ClearCommFeature(unsigned short wFeatureSelector) {
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/* ... add code to handle request */
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return (TRUE);
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}
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/*----------------------------------------------------------------------------
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CDC SetLineCoding Request Callback
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Called automatically on CDC SET_LINE_CODING Request
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Parameters: none (global SetupPacket and EP0Buf)
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Return Value: TRUE - Success, FALSE - Error
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*---------------------------------------------------------------------------*/
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uint32_t CDC_SetLineCoding(void) {
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CDC_LineCoding.dwDTERate = (EP0Buf[0] << 0) | (EP0Buf[1] << 8) | (EP0Buf[2] << 16) | (EP0Buf[3] << 24);
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CDC_LineCoding.bCharFormat = EP0Buf[4];
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CDC_LineCoding.bParityType = EP0Buf[5];
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CDC_LineCoding.bDataBits = EP0Buf[6];
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return (TRUE);
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}
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/*----------------------------------------------------------------------------
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CDC GetLineCoding Request Callback
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Called automatically on CDC GET_LINE_CODING Request
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Parameters: None (global SetupPacket and EP0Buf)
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Return Value: TRUE - Success, FALSE - Error
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*---------------------------------------------------------------------------*/
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uint32_t CDC_GetLineCoding(void) {
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EP0Buf[0] = (CDC_LineCoding.dwDTERate >> 0) & 0xFF;
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EP0Buf[1] = (CDC_LineCoding.dwDTERate >> 8) & 0xFF;
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EP0Buf[2] = (CDC_LineCoding.dwDTERate >> 16) & 0xFF;
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EP0Buf[3] = (CDC_LineCoding.dwDTERate >> 24) & 0xFF;
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EP0Buf[4] = CDC_LineCoding.bCharFormat;
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EP0Buf[5] = CDC_LineCoding.bParityType;
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EP0Buf[6] = CDC_LineCoding.bDataBits;
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return (TRUE);
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}
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/*----------------------------------------------------------------------------
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CDC SetControlLineState Request Callback
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Called automatically on CDC SET_CONTROL_LINE_STATE Request
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Parameters: ControlSignalBitmap
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Return Value: TRUE - Success, FALSE - Error
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*---------------------------------------------------------------------------*/
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uint32_t CDC_SetControlLineState(unsigned short wControlSignalBitmap) {
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CDC_LineState = wControlSignalBitmap;
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usb_serial.host_connected = wControlSignalBitmap > 0 ? true : false;
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return true;
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}
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/*----------------------------------------------------------------------------
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CDC SendBreak Request Callback
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Called automatically on CDC Set_COMM_FATURE Request
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Parameters: 0xFFFF start of Break
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0x0000 stop of Break
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0x#### Duration of Break
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Return Value: TRUE - Success, FALSE - Error
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*---------------------------------------------------------------------------*/
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uint32_t CDC_SendBreak(unsigned short wDurationOfBreak) {
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/* ... add code to handle request */
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return (TRUE);
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}
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/*----------------------------------------------------------------------------
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CDC_BulkIn call on DataIn Request
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Parameters: none
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Return Value: none
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*---------------------------------------------------------------------------*/
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void CDC_BulkIn(void) {
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uint32_t numBytesAvail = usb_serial.transmit_buffer.available();
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if (numBytesAvail > 0) {
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numBytesAvail = numBytesAvail > (USB_CDC_BUFSIZE - 1) ? (USB_CDC_BUFSIZE - 1) : numBytesAvail;
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for(uint32_t i = 0; i < numBytesAvail; ++i) {
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BulkBufIn[i] = usb_serial.transmit_buffer.read(); //todo: optimise
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}
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USB_WriteEP(CDC_DEP_IN, &BulkBufIn[0], numBytesAvail);
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} else {
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CDC_DepInEmpty = 1;
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}
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}
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/*----------------------------------------------------------------------------
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CDC_BulkOut call on DataOut Request
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Parameters: none
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Return Value: none
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*---------------------------------------------------------------------------*/
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void CDC_BulkOut(void) {
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uint32_t numBytesRead = USB_ReadEP(CDC_DEP_OUT, &BulkBufOut[0]);
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CDC_WrOutBuf((char *) &BulkBufOut[0], &numBytesRead);
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}
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/*----------------------------------------------------------------------------
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Get the SERIAL_STATE as defined in usbcdc11.pdf, 6.3.5, Table 69.
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Parameters: none
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Return Value: SerialState as defined in usbcdc11.pdf
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*---------------------------------------------------------------------------*/
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unsigned short CDC_GetSerialState(void) {
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CDC_SerialState = CDC_LineState;
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//todo: detect buffer overrun
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return (CDC_SerialState);
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}
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/*----------------------------------------------------------------------------
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Send the SERIAL_STATE notification as defined in usbcdc11.pdf, 6.3.5.
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*---------------------------------------------------------------------------*/
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void CDC_NotificationIn(void) {
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NotificationBuf[0] = 0xA1; // bmRequestType
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NotificationBuf[1] = CDC_NOTIFICATION_SERIAL_STATE; // bNotification (SERIAL_STATE)
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NotificationBuf[2] = 0x00; // wValue
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NotificationBuf[3] = 0x00;
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NotificationBuf[4] = 0x00; // wIndex (Interface #, LSB first)
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NotificationBuf[5] = 0x00;
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NotificationBuf[6] = 0x02; // wLength (Data length = 2 bytes, LSB first)
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NotificationBuf[7] = 0x00;
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NotificationBuf[8] = (CDC_SerialState >> 0) & 0xFF; // UART State Bitmap (16bits, LSB first)
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NotificationBuf[9] = (CDC_SerialState >> 8) & 0xFF;
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USB_WriteEP(CDC_CEP_IN, &NotificationBuf[0], 10); // send notification
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}
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