Jason Engelman
/
USBCDC
Port of Keils USBCDC example, compiles ok. Gets stuck at init
cdcuser.c
- Committer:
- tecnosys
- Date:
- 2010-07-05
- Revision:
- 0:0b777ff85deb
File content as of revision 0:0b777ff85deb:
/*---------------------------------------------------------------------------- * 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 "type.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 = {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 }