USBCDC - Port of Keils USBCDC example, compiles ok. Gets s…

Users » tecnosys » Code » USBCDC

Jason Engelman / Mbed 2 deprecated USBCDC

Port of Keils USBCDC example, compiles ok. Gets stuck at init

cdcuser.c@0:0b777ff85deb, 2010-07-05 (annotated)

Committer:: tecnosys
Date:: Mon Jul 05 10:16:57 2010 +0000
Revision:: 0:0b777ff85deb

Who changed what in which revision?

User	Revision	Line number	New contents of line
tecnosys	0:0b777ff85deb	1	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	2	* U S B - K e r n e l
tecnosys	0:0b777ff85deb	3	*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	4	* Name: cdcuser.c
tecnosys	0:0b777ff85deb	5	* Purpose: USB Communication Device Class User module
tecnosys	0:0b777ff85deb	6	* Version: V1.10
tecnosys	0:0b777ff85deb	7	*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	8	* This software is supplied "AS IS" without any warranties, express,
tecnosys	0:0b777ff85deb	9	* implied or statutory, including but not limited to the implied
tecnosys	0:0b777ff85deb	10	* warranties of fitness for purpose, satisfactory quality and
tecnosys	0:0b777ff85deb	11	* noninfringement. Keil extends you a royalty-free right to reproduce
tecnosys	0:0b777ff85deb	12	* and distribute executable files created using this software for use
tecnosys	0:0b777ff85deb	13	* on NXP Semiconductors LPC microcontroller devices only. Nothing else
tecnosys	0:0b777ff85deb	14	* gives you the right to use this software.
tecnosys	0:0b777ff85deb	15	*
tecnosys	0:0b777ff85deb	16	* Copyright (c) 2009 Keil - An ARM Company. All rights reserved.
tecnosys	0:0b777ff85deb	17	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	18
tecnosys	0:0b777ff85deb	19	#include "type.h"
tecnosys	0:0b777ff85deb	20
tecnosys	0:0b777ff85deb	21	#include "usb.h"
tecnosys	0:0b777ff85deb	22	#include "usbhw.h"
tecnosys	0:0b777ff85deb	23	#include "usbcfg.h"
tecnosys	0:0b777ff85deb	24	#include "usbcore.h"
tecnosys	0:0b777ff85deb	25	#include "cdc.h"
tecnosys	0:0b777ff85deb	26	#include "cdcuser.h"
tecnosys	0:0b777ff85deb	27	#include "serial.h"
tecnosys	0:0b777ff85deb	28
tecnosys	0:0b777ff85deb	29
tecnosys	0:0b777ff85deb	30	unsigned char BulkBufIn [USB_CDC_BUFSIZE]; // Buffer to store USB IN packet
tecnosys	0:0b777ff85deb	31	unsigned char BulkBufOut [USB_CDC_BUFSIZE]; // Buffer to store USB OUT packet
tecnosys	0:0b777ff85deb	32	unsigned char NotificationBuf [10];
tecnosys	0:0b777ff85deb	33
tecnosys	0:0b777ff85deb	34	CDC_LINE_CODING CDC_LineCoding = {9600, 0, 0, 8};
tecnosys	0:0b777ff85deb	35	unsigned short CDC_SerialState = 0x0000;
tecnosys	0:0b777ff85deb	36	unsigned short CDC_DepInEmpty = 1; // Data IN EP is empty
tecnosys	0:0b777ff85deb	37
tecnosys	0:0b777ff85deb	38	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	39	We need a buffer for incomming data on USB port because USB receives
tecnosys	0:0b777ff85deb	40	much faster than UART transmits
tecnosys	0:0b777ff85deb	41	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	42	/* Buffer masks */
tecnosys	0:0b777ff85deb	43	#define CDC_BUF_SIZE (64) // Output buffer in bytes (power 2)
tecnosys	0:0b777ff85deb	44	// large enough for file transfer
tecnosys	0:0b777ff85deb	45	#define CDC_BUF_MASK (CDC_BUF_SIZE-1ul)
tecnosys	0:0b777ff85deb	46
tecnosys	0:0b777ff85deb	47	/* Buffer read / write macros */
tecnosys	0:0b777ff85deb	48	#define CDC_BUF_RESET(cdcBuf) (cdcBuf.rdIdx = cdcBuf.wrIdx = 0)
tecnosys	0:0b777ff85deb	49	#define CDC_BUF_WR(cdcBuf, dataIn) (cdcBuf.data[CDC_BUF_MASK & cdcBuf.wrIdx++] = (dataIn))
tecnosys	0:0b777ff85deb	50	#define CDC_BUF_RD(cdcBuf) (cdcBuf.data[CDC_BUF_MASK & cdcBuf.rdIdx++])
tecnosys	0:0b777ff85deb	51	#define CDC_BUF_EMPTY(cdcBuf) (cdcBuf.rdIdx == cdcBuf.wrIdx)
tecnosys	0:0b777ff85deb	52	#define CDC_BUF_FULL(cdcBuf) (cdcBuf.rdIdx == cdcBuf.wrIdx+1)
tecnosys	0:0b777ff85deb	53	#define CDC_BUF_COUNT(cdcBuf) (CDC_BUF_MASK & (cdcBuf.wrIdx - cdcBuf.rdIdx))
tecnosys	0:0b777ff85deb	54
tecnosys	0:0b777ff85deb	55
tecnosys	0:0b777ff85deb	56	// CDC output buffer
tecnosys	0:0b777ff85deb	57	typedef struct __CDC_BUF_T {
tecnosys	0:0b777ff85deb	58	unsigned char data[CDC_BUF_SIZE];
tecnosys	0:0b777ff85deb	59	unsigned int wrIdx;
tecnosys	0:0b777ff85deb	60	unsigned int rdIdx;
tecnosys	0:0b777ff85deb	61	} CDC_BUF_T;
tecnosys	0:0b777ff85deb	62
tecnosys	0:0b777ff85deb	63	CDC_BUF_T CDC_OutBuf; // buffer for all CDC Out data
tecnosys	0:0b777ff85deb	64
tecnosys	0:0b777ff85deb	65	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	66	read data from CDC_OutBuf
tecnosys	0:0b777ff85deb	67	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	68	int CDC_RdOutBuf (char buffer, const int length) {
tecnosys	0:0b777ff85deb	69	int bytesToRead, bytesRead;
tecnosys	0:0b777ff85deb	70
tecnosys	0:0b777ff85deb	71	/* Read length bytes, block if bytes are not avaialable */
tecnosys	0:0b777ff85deb	72	bytesToRead = *length;
tecnosys	0:0b777ff85deb	73	bytesToRead = (bytesToRead < (length)) ? bytesToRead : (length);
tecnosys	0:0b777ff85deb	74	bytesRead = bytesToRead;
tecnosys	0:0b777ff85deb	75
tecnosys	0:0b777ff85deb	76
tecnosys	0:0b777ff85deb	77	// ... add code to check for underrun
tecnosys	0:0b777ff85deb	78
tecnosys	0:0b777ff85deb	79	while (bytesToRead--) {
tecnosys	0:0b777ff85deb	80	*buffer++ = CDC_BUF_RD(CDC_OutBuf);
tecnosys	0:0b777ff85deb	81	}
tecnosys	0:0b777ff85deb	82	return (bytesRead);
tecnosys	0:0b777ff85deb	83	}
tecnosys	0:0b777ff85deb	84
tecnosys	0:0b777ff85deb	85	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	86	write data to CDC_OutBuf
tecnosys	0:0b777ff85deb	87	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	88	int CDC_WrOutBuf (const char buffer, int length) {
tecnosys	0:0b777ff85deb	89	int bytesToWrite, bytesWritten;
tecnosys	0:0b777ff85deb	90
tecnosys	0:0b777ff85deb	91	// Write *length bytes
tecnosys	0:0b777ff85deb	92	bytesToWrite = *length;
tecnosys	0:0b777ff85deb	93	bytesWritten = bytesToWrite;
tecnosys	0:0b777ff85deb	94
tecnosys	0:0b777ff85deb	95
tecnosys	0:0b777ff85deb	96	// ... add code to check for overwrite
tecnosys	0:0b777ff85deb	97
tecnosys	0:0b777ff85deb	98	while (bytesToWrite) {
tecnosys	0:0b777ff85deb	99	CDC_BUF_WR(CDC_OutBuf, *buffer++); // Copy Data to buffer
tecnosys	0:0b777ff85deb	100	bytesToWrite--;
tecnosys	0:0b777ff85deb	101	}
tecnosys	0:0b777ff85deb	102
tecnosys	0:0b777ff85deb	103	return (bytesWritten);
tecnosys	0:0b777ff85deb	104	}
tecnosys	0:0b777ff85deb	105
tecnosys	0:0b777ff85deb	106	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	107	check if character(s) are available at CDC_OutBuf
tecnosys	0:0b777ff85deb	108	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	109	int CDC_OutBufAvailChar (int *availChar) {
tecnosys	0:0b777ff85deb	110
tecnosys	0:0b777ff85deb	111	*availChar = CDC_BUF_COUNT(CDC_OutBuf);
tecnosys	0:0b777ff85deb	112
tecnosys	0:0b777ff85deb	113	return (0);
tecnosys	0:0b777ff85deb	114	}
tecnosys	0:0b777ff85deb	115	/* end Buffer handling */
tecnosys	0:0b777ff85deb	116
tecnosys	0:0b777ff85deb	117
tecnosys	0:0b777ff85deb	118	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	119	CDC Initialisation
tecnosys	0:0b777ff85deb	120	Initializes the data structures and serial port
tecnosys	0:0b777ff85deb	121	Parameters: None
tecnosys	0:0b777ff85deb	122	Return Value: None
tecnosys	0:0b777ff85deb	123	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	124	void CDC_Init (char portNum ) {
tecnosys	0:0b777ff85deb	125
tecnosys	0:0b777ff85deb	126	if ( portNum == 0 )
tecnosys	0:0b777ff85deb	127	{
tecnosys	0:0b777ff85deb	128	ser_OpenPort (0);
tecnosys	0:0b777ff85deb	129	ser_InitPort0 (CDC_LineCoding.dwDTERate,
tecnosys	0:0b777ff85deb	130	CDC_LineCoding.bDataBits,
tecnosys	0:0b777ff85deb	131	CDC_LineCoding.bParityType,
tecnosys	0:0b777ff85deb	132	CDC_LineCoding.bCharFormat);
tecnosys	0:0b777ff85deb	133	}
tecnosys	0:0b777ff85deb	134	else
tecnosys	0:0b777ff85deb	135	{
tecnosys	0:0b777ff85deb	136	ser_OpenPort (1);
tecnosys	0:0b777ff85deb	137	ser_InitPort1 (CDC_LineCoding.dwDTERate,
tecnosys	0:0b777ff85deb	138	CDC_LineCoding.bDataBits,
tecnosys	0:0b777ff85deb	139	CDC_LineCoding.bParityType,
tecnosys	0:0b777ff85deb	140	CDC_LineCoding.bCharFormat);
tecnosys	0:0b777ff85deb	141	}
tecnosys	0:0b777ff85deb	142	CDC_DepInEmpty = 1;
tecnosys	0:0b777ff85deb	143	CDC_SerialState = CDC_GetSerialState();
tecnosys	0:0b777ff85deb	144
tecnosys	0:0b777ff85deb	145	CDC_BUF_RESET(CDC_OutBuf);
tecnosys	0:0b777ff85deb	146	}
tecnosys	0:0b777ff85deb	147
tecnosys	0:0b777ff85deb	148
tecnosys	0:0b777ff85deb	149	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	150	CDC SendEncapsulatedCommand Request Callback
tecnosys	0:0b777ff85deb	151	Called automatically on CDC SEND_ENCAPSULATED_COMMAND Request
tecnosys	0:0b777ff85deb	152	Parameters: None (global SetupPacket and EP0Buf)
tecnosys	0:0b777ff85deb	153	Return Value: TRUE - Success, FALSE - Error
tecnosys	0:0b777ff85deb	154	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	155	uint32_t CDC_SendEncapsulatedCommand (void) {
tecnosys	0:0b777ff85deb	156
tecnosys	0:0b777ff85deb	157	return (TRUE);
tecnosys	0:0b777ff85deb	158	}
tecnosys	0:0b777ff85deb	159
tecnosys	0:0b777ff85deb	160
tecnosys	0:0b777ff85deb	161	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	162	CDC GetEncapsulatedResponse Request Callback
tecnosys	0:0b777ff85deb	163	Called automatically on CDC Get_ENCAPSULATED_RESPONSE Request
tecnosys	0:0b777ff85deb	164	Parameters: None (global SetupPacket and EP0Buf)
tecnosys	0:0b777ff85deb	165	Return Value: TRUE - Success, FALSE - Error
tecnosys	0:0b777ff85deb	166	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	167	uint32_t CDC_GetEncapsulatedResponse (void) {
tecnosys	0:0b777ff85deb	168
tecnosys	0:0b777ff85deb	169	/* ... add code to handle request */
tecnosys	0:0b777ff85deb	170	return (TRUE);
tecnosys	0:0b777ff85deb	171	}
tecnosys	0:0b777ff85deb	172
tecnosys	0:0b777ff85deb	173
tecnosys	0:0b777ff85deb	174	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	175	CDC SetCommFeature Request Callback
tecnosys	0:0b777ff85deb	176	Called automatically on CDC Set_COMM_FATURE Request
tecnosys	0:0b777ff85deb	177	Parameters: FeatureSelector
tecnosys	0:0b777ff85deb	178	Return Value: TRUE - Success, FALSE - Error
tecnosys	0:0b777ff85deb	179	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	180	uint32_t CDC_SetCommFeature (unsigned short wFeatureSelector) {
tecnosys	0:0b777ff85deb	181
tecnosys	0:0b777ff85deb	182	/* ... add code to handle request */
tecnosys	0:0b777ff85deb	183	return (TRUE);
tecnosys	0:0b777ff85deb	184	}
tecnosys	0:0b777ff85deb	185
tecnosys	0:0b777ff85deb	186
tecnosys	0:0b777ff85deb	187	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	188	CDC GetCommFeature Request Callback
tecnosys	0:0b777ff85deb	189	Called automatically on CDC Get_COMM_FATURE Request
tecnosys	0:0b777ff85deb	190	Parameters: FeatureSelector
tecnosys	0:0b777ff85deb	191	Return Value: TRUE - Success, FALSE - Error
tecnosys	0:0b777ff85deb	192	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	193	uint32_t CDC_GetCommFeature (unsigned short wFeatureSelector) {
tecnosys	0:0b777ff85deb	194
tecnosys	0:0b777ff85deb	195	/* ... add code to handle request */
tecnosys	0:0b777ff85deb	196	return (TRUE);
tecnosys	0:0b777ff85deb	197	}
tecnosys	0:0b777ff85deb	198
tecnosys	0:0b777ff85deb	199
tecnosys	0:0b777ff85deb	200	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	201	CDC ClearCommFeature Request Callback
tecnosys	0:0b777ff85deb	202	Called automatically on CDC CLEAR_COMM_FATURE Request
tecnosys	0:0b777ff85deb	203	Parameters: FeatureSelector
tecnosys	0:0b777ff85deb	204	Return Value: TRUE - Success, FALSE - Error
tecnosys	0:0b777ff85deb	205	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	206	uint32_t CDC_ClearCommFeature (unsigned short wFeatureSelector) {
tecnosys	0:0b777ff85deb	207
tecnosys	0:0b777ff85deb	208	/* ... add code to handle request */
tecnosys	0:0b777ff85deb	209	return (TRUE);
tecnosys	0:0b777ff85deb	210	}
tecnosys	0:0b777ff85deb	211
tecnosys	0:0b777ff85deb	212
tecnosys	0:0b777ff85deb	213	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	214	CDC SetLineCoding Request Callback
tecnosys	0:0b777ff85deb	215	Called automatically on CDC SET_LINE_CODING Request
tecnosys	0:0b777ff85deb	216	Parameters: none (global SetupPacket and EP0Buf)
tecnosys	0:0b777ff85deb	217	Return Value: TRUE - Success, FALSE - Error
tecnosys	0:0b777ff85deb	218	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	219	uint32_t CDC_SetLineCoding (void) {
tecnosys	0:0b777ff85deb	220
tecnosys	0:0b777ff85deb	221	CDC_LineCoding.dwDTERate = (EP0Buf[0] << 0)
tecnosys	0:0b777ff85deb	222	\| (EP0Buf[1] << 8)
tecnosys	0:0b777ff85deb	223	\| (EP0Buf[2] << 16)
tecnosys	0:0b777ff85deb	224	\| (EP0Buf[3] << 24);
tecnosys	0:0b777ff85deb	225	CDC_LineCoding.bCharFormat = EP0Buf[4];
tecnosys	0:0b777ff85deb	226	CDC_LineCoding.bParityType = EP0Buf[5];
tecnosys	0:0b777ff85deb	227	CDC_LineCoding.bDataBits = EP0Buf[6];
tecnosys	0:0b777ff85deb	228
tecnosys	0:0b777ff85deb	229	#if PORT_NUM
tecnosys	0:0b777ff85deb	230	ser_ClosePort(1);
tecnosys	0:0b777ff85deb	231	ser_OpenPort (1);
tecnosys	0:0b777ff85deb	232	ser_InitPort1 (CDC_LineCoding.dwDTERate,
tecnosys	0:0b777ff85deb	233	CDC_LineCoding.bDataBits,
tecnosys	0:0b777ff85deb	234	CDC_LineCoding.bParityType,
tecnosys	0:0b777ff85deb	235	CDC_LineCoding.bCharFormat);
tecnosys	0:0b777ff85deb	236	#else
tecnosys	0:0b777ff85deb	237	ser_ClosePort(0);
tecnosys	0:0b777ff85deb	238	ser_OpenPort (0);
tecnosys	0:0b777ff85deb	239	ser_InitPort0 (CDC_LineCoding.dwDTERate,
tecnosys	0:0b777ff85deb	240	CDC_LineCoding.bDataBits,
tecnosys	0:0b777ff85deb	241	CDC_LineCoding.bParityType,
tecnosys	0:0b777ff85deb	242	CDC_LineCoding.bCharFormat);
tecnosys	0:0b777ff85deb	243	#endif
tecnosys	0:0b777ff85deb	244	return (TRUE);
tecnosys	0:0b777ff85deb	245	}
tecnosys	0:0b777ff85deb	246
tecnosys	0:0b777ff85deb	247
tecnosys	0:0b777ff85deb	248	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	249	CDC GetLineCoding Request Callback
tecnosys	0:0b777ff85deb	250	Called automatically on CDC GET_LINE_CODING Request
tecnosys	0:0b777ff85deb	251	Parameters: None (global SetupPacket and EP0Buf)
tecnosys	0:0b777ff85deb	252	Return Value: TRUE - Success, FALSE - Error
tecnosys	0:0b777ff85deb	253	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	254	uint32_t CDC_GetLineCoding (void) {
tecnosys	0:0b777ff85deb	255
tecnosys	0:0b777ff85deb	256	EP0Buf[0] = (CDC_LineCoding.dwDTERate >> 0) & 0xFF;
tecnosys	0:0b777ff85deb	257	EP0Buf[1] = (CDC_LineCoding.dwDTERate >> 8) & 0xFF;
tecnosys	0:0b777ff85deb	258	EP0Buf[2] = (CDC_LineCoding.dwDTERate >> 16) & 0xFF;
tecnosys	0:0b777ff85deb	259	EP0Buf[3] = (CDC_LineCoding.dwDTERate >> 24) & 0xFF;
tecnosys	0:0b777ff85deb	260	EP0Buf[4] = CDC_LineCoding.bCharFormat;
tecnosys	0:0b777ff85deb	261	EP0Buf[5] = CDC_LineCoding.bParityType;
tecnosys	0:0b777ff85deb	262	EP0Buf[6] = CDC_LineCoding.bDataBits;
tecnosys	0:0b777ff85deb	263
tecnosys	0:0b777ff85deb	264	return (TRUE);
tecnosys	0:0b777ff85deb	265	}
tecnosys	0:0b777ff85deb	266
tecnosys	0:0b777ff85deb	267
tecnosys	0:0b777ff85deb	268	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	269	CDC SetControlLineState Request Callback
tecnosys	0:0b777ff85deb	270	Called automatically on CDC SET_CONTROL_LINE_STATE Request
tecnosys	0:0b777ff85deb	271	Parameters: ControlSignalBitmap
tecnosys	0:0b777ff85deb	272	Return Value: TRUE - Success, FALSE - Error
tecnosys	0:0b777ff85deb	273	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	274	uint32_t CDC_SetControlLineState (unsigned short wControlSignalBitmap) {
tecnosys	0:0b777ff85deb	275
tecnosys	0:0b777ff85deb	276	/* ... add code to handle request */
tecnosys	0:0b777ff85deb	277	return (TRUE);
tecnosys	0:0b777ff85deb	278	}
tecnosys	0:0b777ff85deb	279
tecnosys	0:0b777ff85deb	280
tecnosys	0:0b777ff85deb	281	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	282	CDC SendBreak Request Callback
tecnosys	0:0b777ff85deb	283	Called automatically on CDC Set_COMM_FATURE Request
tecnosys	0:0b777ff85deb	284	Parameters: 0xFFFF start of Break
tecnosys	0:0b777ff85deb	285	0x0000 stop of Break
tecnosys	0:0b777ff85deb	286	0x#### Duration of Break
tecnosys	0:0b777ff85deb	287	Return Value: TRUE - Success, FALSE - Error
tecnosys	0:0b777ff85deb	288	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	289	uint32_t CDC_SendBreak (unsigned short wDurationOfBreak) {
tecnosys	0:0b777ff85deb	290
tecnosys	0:0b777ff85deb	291	/* ... add code to handle request */
tecnosys	0:0b777ff85deb	292	return (TRUE);
tecnosys	0:0b777ff85deb	293	}
tecnosys	0:0b777ff85deb	294
tecnosys	0:0b777ff85deb	295
tecnosys	0:0b777ff85deb	296	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	297	CDC_BulkIn call on DataIn Request
tecnosys	0:0b777ff85deb	298	Parameters: none
tecnosys	0:0b777ff85deb	299	Return Value: none
tecnosys	0:0b777ff85deb	300	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	301	void CDC_BulkIn(void) {
tecnosys	0:0b777ff85deb	302	int numBytesRead, numBytesAvail;
tecnosys	0:0b777ff85deb	303
tecnosys	0:0b777ff85deb	304	ser_AvailChar (&numBytesAvail);
tecnosys	0:0b777ff85deb	305
tecnosys	0:0b777ff85deb	306	// ... add code to check for overwrite
tecnosys	0:0b777ff85deb	307
tecnosys	0:0b777ff85deb	308	numBytesRead = ser_Read ((char *)&BulkBufIn[0], &numBytesAvail);
tecnosys	0:0b777ff85deb	309
tecnosys	0:0b777ff85deb	310	// send over USB
tecnosys	0:0b777ff85deb	311	if (numBytesRead > 0) {
tecnosys	0:0b777ff85deb	312	USB_WriteEP (CDC_DEP_IN, &BulkBufIn[0], numBytesRead);
tecnosys	0:0b777ff85deb	313	}
tecnosys	0:0b777ff85deb	314	else {
tecnosys	0:0b777ff85deb	315	CDC_DepInEmpty = 1;
tecnosys	0:0b777ff85deb	316	}
tecnosys	0:0b777ff85deb	317	}
tecnosys	0:0b777ff85deb	318
tecnosys	0:0b777ff85deb	319
tecnosys	0:0b777ff85deb	320	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	321	CDC_BulkOut call on DataOut Request
tecnosys	0:0b777ff85deb	322	Parameters: none
tecnosys	0:0b777ff85deb	323	Return Value: none
tecnosys	0:0b777ff85deb	324	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	325	void CDC_BulkOut(void) {
tecnosys	0:0b777ff85deb	326	int numBytesRead;
tecnosys	0:0b777ff85deb	327
tecnosys	0:0b777ff85deb	328	// get data from USB into intermediate buffer
tecnosys	0:0b777ff85deb	329	numBytesRead = USB_ReadEP(CDC_DEP_OUT, &BulkBufOut[0]);
tecnosys	0:0b777ff85deb	330
tecnosys	0:0b777ff85deb	331	// ... add code to check for overwrite
tecnosys	0:0b777ff85deb	332
tecnosys	0:0b777ff85deb	333	// store data in a buffer to transmit it over serial interface
tecnosys	0:0b777ff85deb	334	CDC_WrOutBuf ((char *)&BulkBufOut[0], &numBytesRead);
tecnosys	0:0b777ff85deb	335
tecnosys	0:0b777ff85deb	336	}
tecnosys	0:0b777ff85deb	337
tecnosys	0:0b777ff85deb	338
tecnosys	0:0b777ff85deb	339	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	340	Get the SERIAL_STATE as defined in usbcdc11.pdf, 6.3.5, Table 69.
tecnosys	0:0b777ff85deb	341	Parameters: none
tecnosys	0:0b777ff85deb	342	Return Value: SerialState as defined in usbcdc11.pdf
tecnosys	0:0b777ff85deb	343	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	344	unsigned short CDC_GetSerialState (void) {
tecnosys	0:0b777ff85deb	345	unsigned short temp;
tecnosys	0:0b777ff85deb	346
tecnosys	0:0b777ff85deb	347	CDC_SerialState = 0;
tecnosys	0:0b777ff85deb	348	ser_LineState (&temp);
tecnosys	0:0b777ff85deb	349
tecnosys	0:0b777ff85deb	350	if (temp & 0x8000) CDC_SerialState \|= CDC_SERIAL_STATE_RX_CARRIER;
tecnosys	0:0b777ff85deb	351	if (temp & 0x2000) CDC_SerialState \|= CDC_SERIAL_STATE_TX_CARRIER;
tecnosys	0:0b777ff85deb	352	if (temp & 0x0010) CDC_SerialState \|= CDC_SERIAL_STATE_BREAK;
tecnosys	0:0b777ff85deb	353	if (temp & 0x4000) CDC_SerialState \|= CDC_SERIAL_STATE_RING;
tecnosys	0:0b777ff85deb	354	if (temp & 0x0008) CDC_SerialState \|= CDC_SERIAL_STATE_FRAMING;
tecnosys	0:0b777ff85deb	355	if (temp & 0x0004) CDC_SerialState \|= CDC_SERIAL_STATE_PARITY;
tecnosys	0:0b777ff85deb	356	if (temp & 0x0002) CDC_SerialState \|= CDC_SERIAL_STATE_OVERRUN;
tecnosys	0:0b777ff85deb	357
tecnosys	0:0b777ff85deb	358	return (CDC_SerialState);
tecnosys	0:0b777ff85deb	359	}
tecnosys	0:0b777ff85deb	360
tecnosys	0:0b777ff85deb	361
tecnosys	0:0b777ff85deb	362	/*----------------------------------------------------------------------------
tecnosys	0:0b777ff85deb	363	Send the SERIAL_STATE notification as defined in usbcdc11.pdf, 6.3.5.
tecnosys	0:0b777ff85deb	364	---------------------------------------------------------------------------/
tecnosys	0:0b777ff85deb	365	void CDC_NotificationIn (void) {
tecnosys	0:0b777ff85deb	366
tecnosys	0:0b777ff85deb	367	NotificationBuf[0] = 0xA1; // bmRequestType
tecnosys	0:0b777ff85deb	368	NotificationBuf[1] = CDC_NOTIFICATION_SERIAL_STATE; // bNotification (SERIAL_STATE)
tecnosys	0:0b777ff85deb	369	NotificationBuf[2] = 0x00; // wValue
tecnosys	0:0b777ff85deb	370	NotificationBuf[3] = 0x00;
tecnosys	0:0b777ff85deb	371	NotificationBuf[4] = 0x00; // wIndex (Interface #, LSB first)
tecnosys	0:0b777ff85deb	372	NotificationBuf[5] = 0x00;
tecnosys	0:0b777ff85deb	373	NotificationBuf[6] = 0x02; // wLength (Data length = 2 bytes, LSB first)
tecnosys	0:0b777ff85deb	374	NotificationBuf[7] = 0x00;
tecnosys	0:0b777ff85deb	375	NotificationBuf[8] = (CDC_SerialState >> 0) & 0xFF; // UART State Bitmap (16bits, LSB first)
tecnosys	0:0b777ff85deb	376	NotificationBuf[9] = (CDC_SerialState >> 8) & 0xFF;
tecnosys	0:0b777ff85deb	377
tecnosys	0:0b777ff85deb	378	USB_WriteEP (CDC_CEP_IN, &NotificationBuf[0], 10); // send notification
tecnosys	0:0b777ff85deb	379	}

Repository toolbox

Export to desktop IDE

Build repository

Repository details

Type:	Program
Mbed OS support:	Mbed 2 deprecated
Created:	05 Jul 2010
Imports:	131
Forks:	0
Commits:	1
Dependents:	0
Dependencies:	1
Followers:	4

cdcuser.c@0:0b777ff85deb, 2010-07-05 (annotated)

Who changed what in which revision?

Repository toolbox

Repository details

Important Information for this Arm website

Access Warning