--- /dev/null
+/*----------------------------------------------------------------------------
+ * 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 "lpc_types.h"
+
+#include "usb.h"
+#include "hw.h"
+#include "cfg.h"
+#include "core.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 = {9600, 0, 0, 8};
+unsigned short CDC_SerialState = 0x0000;
+unsigned short CDC_DepInEmpty = 1; // Data IN EP is empty
+
+/*----------------------------------------------------------------------------
+ We need a buffer for incomming 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];
+ unsigned int wrIdx;
+ 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 (char portNum ) {
+
+ if ( portNum == 0 )
+ {
+ ser_OpenPort (0);
+ ser_InitPort0 (CDC_LineCoding.dwDTERate,
+ CDC_LineCoding.bDataBits,
+ CDC_LineCoding.bParityType,
+ CDC_LineCoding.bCharFormat);
+ }
+ else
+ {
+ ser_OpenPort (1);
+ ser_InitPort1 (CDC_LineCoding.dwDTERate,
+ CDC_LineCoding.bDataBits,
+ CDC_LineCoding.bParityType,
+ CDC_LineCoding.bCharFormat);
+ }
+ CDC_DepInEmpty = 1;
+ CDC_SerialState = CDC_GetSerialState();
+
+ CDC_BUF_RESET(CDC_OutBuf);
+}
+
+
+/*----------------------------------------------------------------------------
+ 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];
+
+#if PORT_NUM
+ ser_ClosePort(1);
+ ser_OpenPort (1);
+ ser_InitPort1 (CDC_LineCoding.dwDTERate,
+ CDC_LineCoding.bDataBits,
+ CDC_LineCoding.bParityType,
+ CDC_LineCoding.bCharFormat);
+#else
+ ser_ClosePort(0);
+ ser_OpenPort (0);
+ ser_InitPort0 (CDC_LineCoding.dwDTERate,
+ CDC_LineCoding.bDataBits,
+ CDC_LineCoding.bParityType,
+ CDC_LineCoding.bCharFormat);
+#endif
+ 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;
+
+ 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) {
+ unsigned short temp;
+
+ CDC_SerialState = 0;
+ ser_LineState (&temp);
+
+ if (temp & 0x8000) CDC_SerialState |= CDC_SERIAL_STATE_RX_CARRIER;
+ if (temp & 0x2000) CDC_SerialState |= CDC_SERIAL_STATE_TX_CARRIER;
+ if (temp & 0x0010) CDC_SerialState |= CDC_SERIAL_STATE_BREAK;
+ if (temp & 0x4000) CDC_SerialState |= CDC_SERIAL_STATE_RING;
+ if (temp & 0x0008) CDC_SerialState |= CDC_SERIAL_STATE_FRAMING;
+ if (temp & 0x0004) CDC_SerialState |= CDC_SERIAL_STATE_PARITY;
+ if (temp & 0x0002) CDC_SerialState |= CDC_SERIAL_STATE_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
+}