--- /dev/null
+/*----------------------------------------------------------------------------\r
+ * U S B - K e r n e l\r
+ *----------------------------------------------------------------------------\r
+ * Name: cdcuser.c\r
+ * Purpose: USB Communication Device Class User module\r
+ * Version: V1.10\r
+ *----------------------------------------------------------------------------\r
+* This software is supplied "AS IS" without any warranties, express,\r
+ * implied or statutory, including but not limited to the implied\r
+ * warranties of fitness for purpose, satisfactory quality and\r
+ * noninfringement. Keil extends you a royalty-free right to reproduce\r
+ * and distribute executable files created using this software for use\r
+ * on NXP Semiconductors LPC microcontroller devices only. Nothing else\r
+ * gives you the right to use this software.\r
+ *\r
+ * Copyright (c) 2009 Keil - An ARM Company. All rights reserved.\r
+ *---------------------------------------------------------------------------*/\r
+\r
+#include "lpc_types.h"\r
+\r
+#include "usb.h"\r
+#include "usbhw.h"\r
+#include "usbcfg.h"\r
+#include "usbcore.h"\r
+#include "cdc.h"\r
+#include "cdcuser.h"\r
+#include "serial.h"\r
+\r
+\r
+unsigned char BulkBufIn [USB_CDC_BUFSIZE]; // Buffer to store USB IN packet\r
+unsigned char BulkBufOut [USB_CDC_BUFSIZE]; // Buffer to store USB OUT packet\r
+unsigned char NotificationBuf [10];\r
+\r
+CDC_LINE_CODING CDC_LineCoding = {9600, 0, 0, 8};\r
+unsigned short CDC_SerialState = 0x0000;\r
+unsigned short CDC_DepInEmpty = 1; // Data IN EP is empty\r
+\r
+/*----------------------------------------------------------------------------\r
+ We need a buffer for incomming data on USB port because USB receives\r
+ much faster than UART transmits\r
+ *---------------------------------------------------------------------------*/\r
+/* Buffer masks */\r
+#define CDC_BUF_SIZE (64) // Output buffer in bytes (power 2)\r
+ // large enough for file transfer\r
+#define CDC_BUF_MASK (CDC_BUF_SIZE-1ul)\r
+\r
+/* Buffer read / write macros */\r
+#define CDC_BUF_RESET(cdcBuf) (cdcBuf.rdIdx = cdcBuf.wrIdx = 0)\r
+#define CDC_BUF_WR(cdcBuf, dataIn) (cdcBuf.data[CDC_BUF_MASK & cdcBuf.wrIdx++] = (dataIn))\r
+#define CDC_BUF_RD(cdcBuf) (cdcBuf.data[CDC_BUF_MASK & cdcBuf.rdIdx++])\r
+#define CDC_BUF_EMPTY(cdcBuf) (cdcBuf.rdIdx == cdcBuf.wrIdx)\r
+#define CDC_BUF_FULL(cdcBuf) (cdcBuf.rdIdx == cdcBuf.wrIdx+1)\r
+#define CDC_BUF_COUNT(cdcBuf) (CDC_BUF_MASK & (cdcBuf.wrIdx - cdcBuf.rdIdx))\r
+\r
+\r
+// CDC output buffer\r
+typedef struct __CDC_BUF_T {\r
+ unsigned char data[CDC_BUF_SIZE];\r
+ unsigned int wrIdx;\r
+ unsigned int rdIdx;\r
+} CDC_BUF_T;\r
+\r
+CDC_BUF_T CDC_OutBuf; // buffer for all CDC Out data\r
+\r
+/*----------------------------------------------------------------------------\r
+ read data from CDC_OutBuf\r
+ *---------------------------------------------------------------------------*/\r
+int CDC_RdOutBuf (char *buffer, const int *length) {\r
+ int bytesToRead, bytesRead;\r
+\r
+ /* Read *length bytes, block if *bytes are not avaialable */\r
+ bytesToRead = *length;\r
+ bytesToRead = (bytesToRead < (*length)) ? bytesToRead : (*length);\r
+ bytesRead = bytesToRead;\r
+\r
+\r
+ // ... add code to check for underrun\r
+\r
+ while (bytesToRead--) {\r
+ *buffer++ = CDC_BUF_RD(CDC_OutBuf);\r
+ }\r
+ return (bytesRead);\r
+}\r
+\r
+/*----------------------------------------------------------------------------\r
+ write data to CDC_OutBuf\r
+ *---------------------------------------------------------------------------*/\r
+int CDC_WrOutBuf (const char *buffer, int *length) {\r
+ int bytesToWrite, bytesWritten;\r
+\r
+ // Write *length bytes\r
+ bytesToWrite = *length;\r
+ bytesWritten = bytesToWrite;\r
+\r
+\r
+ // ... add code to check for overwrite\r
+\r
+ while (bytesToWrite) {\r
+ CDC_BUF_WR(CDC_OutBuf, *buffer++); // Copy Data to buffer\r
+ bytesToWrite--;\r
+ }\r
+\r
+ return (bytesWritten);\r
+}\r
+\r
+/*----------------------------------------------------------------------------\r
+ check if character(s) are available at CDC_OutBuf\r
+ *---------------------------------------------------------------------------*/\r
+int CDC_OutBufAvailChar (int *availChar) {\r
+\r
+ *availChar = CDC_BUF_COUNT(CDC_OutBuf);\r
+\r
+ return (0);\r
+}\r
+/* end Buffer handling */\r
+\r
+\r
+/*----------------------------------------------------------------------------\r
+ CDC Initialisation\r
+ Initializes the data structures and serial port\r
+ Parameters: None\r
+ Return Value: None\r
+ *---------------------------------------------------------------------------*/\r
+void CDC_Init (char portNum ) {\r
+\r
+ if ( portNum == 0 )\r
+ {\r
+ ser_OpenPort (0);\r
+ ser_InitPort0 (CDC_LineCoding.dwDTERate,\r
+ CDC_LineCoding.bDataBits,\r
+ CDC_LineCoding.bParityType,\r
+ CDC_LineCoding.bCharFormat);\r
+ }\r
+ else\r
+ {\r
+ ser_OpenPort (1);\r
+ ser_InitPort1 (CDC_LineCoding.dwDTERate,\r
+ CDC_LineCoding.bDataBits,\r
+ CDC_LineCoding.bParityType,\r
+ CDC_LineCoding.bCharFormat);\r
+ }\r
+ CDC_DepInEmpty = 1;\r
+ CDC_SerialState = CDC_GetSerialState();\r
+\r
+ CDC_BUF_RESET(CDC_OutBuf);\r
+}\r
+\r
+\r
+/*----------------------------------------------------------------------------\r
+ CDC SendEncapsulatedCommand Request Callback\r
+ Called automatically on CDC SEND_ENCAPSULATED_COMMAND Request\r
+ Parameters: None (global SetupPacket and EP0Buf)\r
+ Return Value: TRUE - Success, FALSE - Error\r
+ *---------------------------------------------------------------------------*/\r
+uint32_t CDC_SendEncapsulatedCommand (void) {\r
+\r
+ return (TRUE);\r
+}\r
+\r
+\r
+/*----------------------------------------------------------------------------\r
+ CDC GetEncapsulatedResponse Request Callback\r
+ Called automatically on CDC Get_ENCAPSULATED_RESPONSE Request\r
+ Parameters: None (global SetupPacket and EP0Buf)\r
+ Return Value: TRUE - Success, FALSE - Error\r
+ *---------------------------------------------------------------------------*/\r
+uint32_t CDC_GetEncapsulatedResponse (void) {\r
+\r
+ /* ... add code to handle request */\r
+ return (TRUE);\r
+}\r
+\r
+\r
+/*----------------------------------------------------------------------------\r
+ CDC SetCommFeature Request Callback\r
+ Called automatically on CDC Set_COMM_FATURE Request\r
+ Parameters: FeatureSelector\r
+ Return Value: TRUE - Success, FALSE - Error\r
+ *---------------------------------------------------------------------------*/\r
+uint32_t CDC_SetCommFeature (unsigned short wFeatureSelector) {\r
+\r
+ /* ... add code to handle request */\r
+ return (TRUE);\r
+}\r
+\r
+\r
+/*----------------------------------------------------------------------------\r
+ CDC GetCommFeature Request Callback\r
+ Called automatically on CDC Get_COMM_FATURE Request\r
+ Parameters: FeatureSelector\r
+ Return Value: TRUE - Success, FALSE - Error\r
+ *---------------------------------------------------------------------------*/\r
+uint32_t CDC_GetCommFeature (unsigned short wFeatureSelector) {\r
+\r
+ /* ... add code to handle request */\r
+ return (TRUE);\r
+}\r
+\r
+\r
+/*----------------------------------------------------------------------------\r
+ CDC ClearCommFeature Request Callback\r
+ Called automatically on CDC CLEAR_COMM_FATURE Request\r
+ Parameters: FeatureSelector\r
+ Return Value: TRUE - Success, FALSE - Error\r
+ *---------------------------------------------------------------------------*/\r
+uint32_t CDC_ClearCommFeature (unsigned short wFeatureSelector) {\r
+\r
+ /* ... add code to handle request */\r
+ return (TRUE);\r
+}\r
+\r
+\r
+/*----------------------------------------------------------------------------\r
+ CDC SetLineCoding Request Callback\r
+ Called automatically on CDC SET_LINE_CODING Request\r
+ Parameters: none (global SetupPacket and EP0Buf)\r
+ Return Value: TRUE - Success, FALSE - Error\r
+ *---------------------------------------------------------------------------*/\r
+uint32_t CDC_SetLineCoding (void) {\r
+\r
+ CDC_LineCoding.dwDTERate = (EP0Buf[0] << 0)\r
+ | (EP0Buf[1] << 8)\r
+ | (EP0Buf[2] << 16)\r
+ | (EP0Buf[3] << 24);\r
+ CDC_LineCoding.bCharFormat = EP0Buf[4];\r
+ CDC_LineCoding.bParityType = EP0Buf[5];\r
+ CDC_LineCoding.bDataBits = EP0Buf[6];\r
+\r
+#if PORT_NUM\r
+ ser_ClosePort(1);\r
+ ser_OpenPort (1);\r
+ ser_InitPort1 (CDC_LineCoding.dwDTERate,\r
+ CDC_LineCoding.bDataBits,\r
+ CDC_LineCoding.bParityType,\r
+ CDC_LineCoding.bCharFormat);\r
+#else\r
+ ser_ClosePort(0);\r
+ ser_OpenPort (0);\r
+ ser_InitPort0 (CDC_LineCoding.dwDTERate,\r
+ CDC_LineCoding.bDataBits,\r
+ CDC_LineCoding.bParityType,\r
+ CDC_LineCoding.bCharFormat);\r
+#endif\r
+ return (TRUE);\r
+}\r
+\r
+\r
+/*----------------------------------------------------------------------------\r
+ CDC GetLineCoding Request Callback\r
+ Called automatically on CDC GET_LINE_CODING Request\r
+ Parameters: None (global SetupPacket and EP0Buf)\r
+ Return Value: TRUE - Success, FALSE - Error\r
+ *---------------------------------------------------------------------------*/\r
+uint32_t CDC_GetLineCoding (void) {\r
+\r
+ EP0Buf[0] = (CDC_LineCoding.dwDTERate >> 0) & 0xFF;\r
+ EP0Buf[1] = (CDC_LineCoding.dwDTERate >> 8) & 0xFF;\r
+ EP0Buf[2] = (CDC_LineCoding.dwDTERate >> 16) & 0xFF;\r
+ EP0Buf[3] = (CDC_LineCoding.dwDTERate >> 24) & 0xFF;\r
+ EP0Buf[4] = CDC_LineCoding.bCharFormat;\r
+ EP0Buf[5] = CDC_LineCoding.bParityType;\r
+ EP0Buf[6] = CDC_LineCoding.bDataBits;\r
+\r
+ return (TRUE);\r
+}\r
+\r
+\r
+/*----------------------------------------------------------------------------\r
+ CDC SetControlLineState Request Callback\r
+ Called automatically on CDC SET_CONTROL_LINE_STATE Request\r
+ Parameters: ControlSignalBitmap\r
+ Return Value: TRUE - Success, FALSE - Error\r
+ *---------------------------------------------------------------------------*/\r
+uint32_t CDC_SetControlLineState (unsigned short wControlSignalBitmap) {\r
+\r
+ /* ... add code to handle request */\r
+ return (TRUE);\r
+}\r
+\r
+\r
+/*----------------------------------------------------------------------------\r
+ CDC SendBreak Request Callback\r
+ Called automatically on CDC Set_COMM_FATURE Request\r
+ Parameters: 0xFFFF start of Break\r
+ 0x0000 stop of Break\r
+ 0x#### Duration of Break\r
+ Return Value: TRUE - Success, FALSE - Error\r
+ *---------------------------------------------------------------------------*/\r
+uint32_t CDC_SendBreak (unsigned short wDurationOfBreak) {\r
+\r
+ /* ... add code to handle request */\r
+ return (TRUE);\r
+}\r
+\r
+\r
+/*----------------------------------------------------------------------------\r
+ CDC_BulkIn call on DataIn Request\r
+ Parameters: none\r
+ Return Value: none\r
+ *---------------------------------------------------------------------------*/\r
+void CDC_BulkIn(void) {\r
+ int numBytesRead, numBytesAvail;\r
+\r
+ ser_AvailChar (&numBytesAvail);\r
+\r
+ // ... add code to check for overwrite\r
+\r
+ numBytesRead = ser_Read ((char *)&BulkBufIn[0], &numBytesAvail);\r
+\r
+ // send over USB\r
+ if (numBytesRead > 0) {\r
+ USB_WriteEP (CDC_DEP_IN, &BulkBufIn[0], numBytesRead);\r
+ }\r
+ else {\r
+ CDC_DepInEmpty = 1;\r
+ }\r
+}\r
+\r
+\r
+/*----------------------------------------------------------------------------\r
+ CDC_BulkOut call on DataOut Request\r
+ Parameters: none\r
+ Return Value: none\r
+ *---------------------------------------------------------------------------*/\r
+void CDC_BulkOut(void) {\r
+ int numBytesRead;\r
+\r
+ // get data from USB into intermediate buffer\r
+ numBytesRead = USB_ReadEP(CDC_DEP_OUT, &BulkBufOut[0]);\r
+\r
+ // ... add code to check for overwrite\r
+\r
+ // store data in a buffer to transmit it over serial interface\r
+ CDC_WrOutBuf ((char *)&BulkBufOut[0], &numBytesRead);\r
+\r
+}\r
+\r
+\r
+/*----------------------------------------------------------------------------\r
+ Get the SERIAL_STATE as defined in usbcdc11.pdf, 6.3.5, Table 69.\r
+ Parameters: none\r
+ Return Value: SerialState as defined in usbcdc11.pdf\r
+ *---------------------------------------------------------------------------*/\r
+unsigned short CDC_GetSerialState (void) {\r
+ unsigned short temp;\r
+\r
+ CDC_SerialState = 0;\r
+ ser_LineState (&temp);\r
+\r
+ if (temp & 0x8000) CDC_SerialState |= CDC_SERIAL_STATE_RX_CARRIER;\r
+ if (temp & 0x2000) CDC_SerialState |= CDC_SERIAL_STATE_TX_CARRIER;\r
+ if (temp & 0x0010) CDC_SerialState |= CDC_SERIAL_STATE_BREAK;\r
+ if (temp & 0x4000) CDC_SerialState |= CDC_SERIAL_STATE_RING;\r
+ if (temp & 0x0008) CDC_SerialState |= CDC_SERIAL_STATE_FRAMING;\r
+ if (temp & 0x0004) CDC_SerialState |= CDC_SERIAL_STATE_PARITY;\r
+ if (temp & 0x0002) CDC_SerialState |= CDC_SERIAL_STATE_OVERRUN;\r
+\r
+ return (CDC_SerialState);\r
+}\r
+\r
+\r
+/*----------------------------------------------------------------------------\r
+ Send the SERIAL_STATE notification as defined in usbcdc11.pdf, 6.3.5.\r
+ *---------------------------------------------------------------------------*/\r
+void CDC_NotificationIn (void) {\r
+\r
+ NotificationBuf[0] = 0xA1; // bmRequestType\r
+ NotificationBuf[1] = CDC_NOTIFICATION_SERIAL_STATE; // bNotification (SERIAL_STATE)\r
+ NotificationBuf[2] = 0x00; // wValue\r
+ NotificationBuf[3] = 0x00;\r
+ NotificationBuf[4] = 0x00; // wIndex (Interface #, LSB first)\r
+ NotificationBuf[5] = 0x00;\r
+ NotificationBuf[6] = 0x02; // wLength (Data length = 2 bytes, LSB first)\r
+ NotificationBuf[7] = 0x00;\r
+ NotificationBuf[8] = (CDC_SerialState >> 0) & 0xFF; // UART State Bitmap (16bits, LSB first)\r
+ NotificationBuf[9] = (CDC_SerialState >> 8) & 0xFF;\r
+\r
+ USB_WriteEP (CDC_CEP_IN, &NotificationBuf[0], 10); // send notification\r
+}\r
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