/*---------------------------------------------------------------------------- * 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 #include } #include "usb.h" #include "usbhw.h" #include "usbcfg.h" #include "usbcore.h" #include "cdc.h" #include "cdcuser.h" #include 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) { 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 }