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Diffstat (limited to 'USB_Host_Shield/examples/descriptor_parser/descriptor_parser.pde')
| -rw-r--r-- | USB_Host_Shield/examples/descriptor_parser/descriptor_parser.pde | 720 |
1 files changed, 0 insertions, 720 deletions
diff --git a/USB_Host_Shield/examples/descriptor_parser/descriptor_parser.pde b/USB_Host_Shield/examples/descriptor_parser/descriptor_parser.pde deleted file mode 100644 index d417e76..0000000 --- a/USB_Host_Shield/examples/descriptor_parser/descriptor_parser.pde +++ /dev/null @@ -1,720 +0,0 @@ -/* MAX3421E USB Host controller configuration descriptor parser */ -#include <Spi.h> -#include <Max3421e.h> -#include <Usb.h> -#include "descriptor_parser.h" - -#define LOBYTE(x) ((char*)(&(x)))[0] -#define HIBYTE(x) ((char*)(&(x)))[1] -#define BUFSIZE 256 //buffer size -#define DEVADDR 1 - -#define getReportDescr( addr, ep, nbytes, parse_func, nak_limit ) ctrlXfer( addr, ep, bmREQ_HIDREPORT, USB_REQUEST_GET_DESCRIPTOR, 0x00, HID_DESCRIPTOR_REPORT, 0x0000, nbytes, parse_func, nak_limit ) -#define getReport( addr, ep, nbytes, interface, report_type, report_id, parse_func, nak_limit ) ctrlXfer( addr, ep, bmREQ_HIDIN, HID_REQUEST_GET_REPORT, report_id, report_type, interface, nbytes, parse_func, nak_limit ) - -/* Foeward declarations */ -void setup(); -void loop(); -byte ctrlXfer( byte addr, byte ep, byte bmReqType, byte bRequest, byte wValLo, byte wValHi, unsigned int wInd, uint16_t nbytes, PARSE parse_func, uint16_t nak_limit ); -void HIDreport_parse( uint8_t* buf, uint8_t* head, uint8_t* tail); - -typedef struct { - uint8_t bDescriptorType; - uint16_t wDescriptorLength; -} HID_CLASS_DESCRIPTOR; - - -//typedef void (*PARSE)( int8_t*, int8_t*, int8_t ); - -MAX3421E Max; -USB Usb; - -void setup() -{ - Serial.begin( 115200 ); - printProgStr(PSTR("\r\nStart")); - Max.powerOn(); - delay( 200 ); -} - -void loop() -{ - uint8_t rcode; - uint8_t tmpbyte = 0; - //PARSE pf = &HIDreport_parse; - /**/ - Max.Task(); - Usb.Task(); - if( Usb.getUsbTaskState() >= USB_STATE_CONFIGURING ) { //state configuring or higher - /* printing device descriptor */ - printProgStr(PSTR("\r\nDevice addressed... ")); - printProgStr(PSTR("Requesting device descriptor.")); - tmpbyte = getdevdescr( DEVADDR ); //number of configurations, 0 if error - if( tmpbyte == 0 ) { - printProgStr(PSTR("\r\nDevice descriptor cannot be retrieved. Program Halted\r\n")); - while( 1 ); //stop - }//if( tmpbyte - /* print configuration descriptors for all configurations */ - for( uint8_t i = 0; i < tmpbyte; i++ ) { - getconfdescr( DEVADDR, i ); - } - /* Stop */ - while( 1 ); //stop - } -} - -/* Prints device descriptor. Returns number of configurations or zero if request error occured */ -byte getdevdescr( byte addr ) -{ - USB_DEVICE_DESCRIPTOR buf; - byte rcode; - //Max.toggle( BPNT_0 ); - rcode = Usb.getDevDescr( addr, 0, 0x12, ( char *)&buf ); - if( rcode ) { - printProgStr( rcode_error_msg ); - print_hex( rcode, 8 ); - return( 0 ); - } - printProgStr(PSTR("\r\nDevice descriptor: \r\n")); - //Descriptor length - printProgStr( descr_len ); - print_hex( buf.bLength, 8 ); - //Descriptor type -// printProgStr( descr_type ); -// print_hex( buf.bDescriptorType, 8 ); -// printProgStr( descrtype_parse( buf.bDescriptorType )); - //USB Version - printProgStr(PSTR("\r\nUSB version:\t\t")); - Serial.print(( HIBYTE( buf.bcdUSB )), HEX ); - Serial.print("."); - Serial.print(( LOBYTE( buf.bcdUSB )), HEX ); - //Device class - printProgStr( class_str ); - print_hex( buf.bDeviceClass, 8 ); - printProgStr( classname_parse( buf.bDeviceClass )); - //Device Subclass - printProgStr( subclass_str ); - print_hex( buf.bDeviceSubClass, 8 ); - //Device Protocol - printProgStr( protocol_str ); - print_hex( buf.bDeviceProtocol, 8 ); - //Max.packet size - printProgStr( maxpktsize_str ); - print_hex( buf.bMaxPacketSize0, 8 ); - //VID - printProgStr(PSTR("\r\nVendor ID:\t\t")); - print_hex( buf.idVendor, 16 ); - //PID - printProgStr(PSTR("\r\nProduct ID:\t\t")); - print_hex( buf.idProduct, 16 ); - //Revision - printProgStr(PSTR("\r\nRevision ID:\t\t")); - print_hex( buf.bcdDevice, 16 ); - //Mfg.string - printProgStr (PSTR("\r\nMfg.string index:\t")); - print_hex( buf.iManufacturer, 8 ); - getstrdescr( addr, buf.iManufacturer ); - //Prod.string - printProgStr(PSTR("\r\nProd.string index:\t")); - print_hex( buf.iProduct, 8 ); - //printProgStr( str_cont ); - getstrdescr( addr, buf.iProduct ); - //Serial number string - printProgStr(PSTR("\r\nSerial number index:\t")); - print_hex( buf.iSerialNumber, 8 ); - //printProgStr( str_cont ); - getstrdescr( addr, buf.iSerialNumber ); - //Number of configurations - printProgStr(PSTR("\r\nNumber of conf.:\t")); - print_hex( buf.bNumConfigurations, 8 ); - return( buf.bNumConfigurations ); -} -/* Get string descriptor. Takes device address and string index */ -byte getstrdescr( byte addr, byte idx ) -{ - char buf[ BUFSIZE ]; - byte rcode; - byte length; - byte i; - unsigned int langid; - if( idx == 0 ) { //don't try to get index zero - return( 0 ); - } - rcode = Usb.getStrDescr( addr, 0, 1, 0, 0, buf ); //get language table length - if( rcode ) { - printProgStr(PSTR("\r\nError retrieving LangID table length")); - return( rcode ); - } - length = buf[ 0 ]; //length is the first byte - rcode = Usb.getStrDescr( addr, 0, length, 0, 0, buf ); //get language table - if( rcode ) { - printProgStr(PSTR("\r\nError retrieving LangID table")); - return( rcode ); - } - HIBYTE( langid ) = buf[ 3 ]; //get first langid - LOBYTE( langid ) = buf[ 2 ]; //bytes are swapped to account for endiannes - //printProgStr(PSTR("\r\nLanguage ID: ")); - //print_hex( langid, 16 ); - rcode = Usb.getStrDescr( addr, 0, 1, idx, langid, buf ); - if( rcode ) { - printProgStr(PSTR("\r\nError retrieving string length")); - return( rcode ); - } - length = ( buf[ 0 ] < 254 ? buf[ 0 ] : 254 ); - printProgStr(PSTR(" Length: ")); - Serial.print( length, DEC ); - rcode = Usb.getStrDescr( addr, 0, length, idx, langid, buf ); - if( rcode ) { - printProgStr(PSTR("\r\nError retrieveing string")); - return( rcode ); - } - printProgStr(PSTR(" Contents: ")); - for( i = 2; i < length; i+=2 ) { - Serial.print( buf[ i ] ); - } - return( idx ); -} -/* Returns string to class name */ -const char* classname_parse( byte class_number ) -{ - switch( class_number ) { - case 0x00: - return PSTR(" Use class information in the Interface Descriptor"); - case 0x01: - return PSTR(" Audio"); - case 0x02: - return PSTR(" Communications and CDC Control"); - case 0x03: - return PSTR(" HID (Human Interface Device)"); - case 0x05: - return PSTR(" Physical"); - case 0x06: - return PSTR(" Image"); - case 0x07: - return PSTR(" Printer"); - case 0x08: - return PSTR(" Mass Storage"); - case 0x09: - return PSTR(" Hub"); - case 0x0a: - return PSTR(" CDC-Data"); - case 0x0b: - return PSTR(" Smart Card"); - case 0x0d: - return PSTR(" Content Security"); - case 0x0e: - return PSTR(" Video"); - case 0x0f: - return PSTR(" Personal Healthcare"); - case 0xdc: - return PSTR("Diagnostic Device"); - case 0xe0: - return PSTR(" Wireless Controller"); - case 0xef: - return PSTR(" Miscellaneous"); - case 0xfe: - return PSTR(" Application Specific"); - case 0xff: - return PSTR(" Vendor Specific"); - default: - return unk_msg; - }//switch( class_number -} -/* Getting configuration descriptor */ -byte getconfdescr( byte addr, byte conf ) -{ - char buf[ BUFSIZE ]; - char* buf_ptr = buf; - byte rcode; - byte descr_length; - byte descr_type; - unsigned int total_length; - printProgStr(PSTR("\r\n\nConfiguration number ")); - Serial.print( conf, HEX ); - rcode = Usb.getConfDescr( addr, 0, 4, conf, buf ); //get total length - if( rcode ) { - printProgStr(PSTR("Error retrieving configuration length. Error code ")); - Serial.println( rcode, HEX ); - return( 0 ); - }//if( rcode - LOBYTE( total_length ) = buf[ 2 ]; - HIBYTE( total_length ) = buf[ 3 ]; - printProgStr(PSTR("\r\nTotal configuration length: ")); - Serial.print( total_length, DEC ); - printProgStr(PSTR(" bytes")); - if( total_length > BUFSIZE ) { //check if total length is larger than buffer - printProgStr(PSTR("Total length truncated to ")); - Serial.print( BUFSIZE, DEC); - printProgStr(PSTR("bytes")); - total_length = BUFSIZE; - } - rcode = Usb.getConfDescr( addr, 0, total_length, conf, buf ); //get the whole descriptor - while( buf_ptr < buf + total_length ) { //parsing descriptors - descr_length = *( buf_ptr ); - descr_type = *( buf_ptr + 1 ); - switch( descr_type ) { - case( USB_DESCRIPTOR_CONFIGURATION ): - printconfdescr( buf_ptr ); - break; - case( USB_DESCRIPTOR_INTERFACE ): - printintfdescr( buf_ptr ); - break; - case( USB_DESCRIPTOR_ENDPOINT ): - printepdescr( buf_ptr ); - break; - case( HID_DESCRIPTOR_HID ): - printhid_descr( buf_ptr ); - break; - default: - printunkdescr( buf_ptr ); - break; - }//switch( descr_type - Serial.println(""); - buf_ptr = ( buf_ptr + descr_length ); //advance buffer pointer - }//while( buf_ptr <=... - return( 0 ); -} -/* function to print configuration descriptor */ -void printconfdescr( char* descr_ptr ) -{ - USB_CONFIGURATION_DESCRIPTOR* conf_ptr = ( USB_CONFIGURATION_DESCRIPTOR* )descr_ptr; - uint8_t tmpbyte; - printProgStr(PSTR("\r\n\nConfiguration descriptor:")); - printProgStr(PSTR("\r\nTotal length:\t\t")); - print_hex( conf_ptr->wTotalLength, 16 ); - printProgStr(PSTR("\r\nNumber of interfaces:\t")); - print_hex( conf_ptr->bNumInterfaces, 8 ); - printProgStr(PSTR("\r\nConfiguration value:\t")); - print_hex( conf_ptr->bConfigurationValue, 8 ); - printProgStr(PSTR("\r\nConfiguration string:\t")); - tmpbyte = conf_ptr->iConfiguration; - print_hex( tmpbyte, 8 ); - getstrdescr( DEVADDR, tmpbyte ); - printProgStr(PSTR("\r\nAttributes:\t\t")); - tmpbyte = conf_ptr->bmAttributes; - print_hex( tmpbyte, 8 ); - if( tmpbyte & 0x40 ) { //D6 - printProgStr(PSTR(" Self-powered")); - } - if( tmpbyte & 0x20 ) { //D5 - printProgStr(PSTR(" Remote Wakeup")); - } - printProgStr(PSTR("\r\nMax.power:\t\t")); - tmpbyte = conf_ptr->bMaxPower; - print_hex( tmpbyte, 8 ); - printProgStr(PSTR(" ")); - Serial.print(( tmpbyte * 2 ), DEC); - printProgStr(PSTR("ma")); - return; -} -/* function to print interface descriptor */ -void printintfdescr( char* descr_ptr ) -{ - USB_INTERFACE_DESCRIPTOR* intf_ptr = ( USB_INTERFACE_DESCRIPTOR* )descr_ptr; - uint8_t tmpbyte; - printProgStr(PSTR("\r\nInterface descriptor:")); - printProgStr(PSTR("\r\nInterface number:\t")); - print_hex( intf_ptr->bInterfaceNumber, 8 ); - printProgStr(PSTR("\r\nAlternate setting:\t")); - print_hex( intf_ptr->bAlternateSetting, 8 ); - printProgStr(PSTR("\r\nEndpoints:\t\t")); - print_hex( intf_ptr->bNumEndpoints, 8 ); - printProgStr( class_str ); - tmpbyte = intf_ptr->bInterfaceClass; - print_hex( tmpbyte, 8 ); - printProgStr(classname_parse( tmpbyte )); - printProgStr( subclass_str ); - print_hex( intf_ptr->bInterfaceSubClass, 8 ); - printProgStr( protocol_str ); - print_hex( intf_ptr->bInterfaceProtocol, 8 ); - printProgStr(PSTR("\r\nInterface string:\t")); - tmpbyte = intf_ptr->iInterface; - print_hex( tmpbyte, 8 ); - getstrdescr( DEVADDR, tmpbyte ); - return; -} -/* function to print endpoint descriptor */ -void printepdescr( char* descr_ptr ) -{ - USB_ENDPOINT_DESCRIPTOR* ep_ptr = ( USB_ENDPOINT_DESCRIPTOR* )descr_ptr; - uint8_t tmpbyte; - printProgStr(PSTR("\r\nEndpoint descriptor:")); - printProgStr(PSTR("\r\nEndpoint address:\t")); - tmpbyte = ep_ptr->bEndpointAddress; - print_hex( tmpbyte & 0x0f, 8 ); - printProgStr(PSTR(" Direction: ")); - ( tmpbyte & 0x80 ) ? printProgStr(PSTR("IN")) : printProgStr(PSTR("OUT")); - printProgStr(PSTR("\r\nAttributes:\t\t")); - tmpbyte = ep_ptr->bmAttributes; - print_hex( tmpbyte, 8 ); - printProgStr(PSTR(" Transfer type: ")); - printProgStr((char*)pgm_read_word(&transfer_types[(tmpbyte & 0x03)])); - if(( tmpbyte & 0x03 ) == 1 ) { //Isochronous Transfer - printProgStr(PSTR(", Sync Type: ")); - printProgStr((char*)pgm_read_word(&sync_types[(tmpbyte & 0x0c)])); - printProgStr(PSTR(", Usage Type: ")); - printProgStr((char*)pgm_read_word(&usage_types[(tmpbyte & 0x30)])); - }//if( tmpbyte & 0x01 - printProgStr( maxpktsize_str ); - print_hex( ep_ptr->wMaxPacketSize, 16 ); - printProgStr(PSTR("\r\nPolling interval:\t")); - tmpbyte = ep_ptr->bInterval; - print_hex( tmpbyte, 8 ); - printProgStr(PSTR(" ")); - Serial.print( tmpbyte, DEC ); - printProgStr(PSTR(" ms")); - return; -} -/* function to print HID descriptor */ -void printhid_descr( char* descr_ptr ) -{ - PARSE pf = &HIDreport_parse; - USB_HID_DESCRIPTOR* hid_ptr = ( USB_HID_DESCRIPTOR* )descr_ptr; - uint8_t tmpbyte; - /**/ - printProgStr(PSTR("\r\nHID descriptor:")); - printProgStr(PSTR("\r\nDescriptor length:\t")); - tmpbyte = hid_ptr->bLength; - print_hex( tmpbyte, 8 ); - printProgStr(PSTR(" ")); - Serial.print( tmpbyte, DEC ); - printProgStr(PSTR(" bytes")); - printProgStr(PSTR("\r\nHID version:\t\t")); - Serial.print(( HIBYTE( hid_ptr->bcdHID )), HEX ); - Serial.print("."); - Serial.print(( LOBYTE( hid_ptr->bcdHID )), HEX ); - tmpbyte = hid_ptr->bCountryCode; - printProgStr(PSTR("\r\nCountry Code:\t\t")); - Serial.print( tmpbyte, DEC ); - printProgStr(PSTR(" ")); - ( tmpbyte > 35 ) ? printProgStr(PSTR("Reserved")) : printProgStr((char*)pgm_read_word(&HID_Country_Codes[ tmpbyte ])); - tmpbyte = hid_ptr->bNumDescriptors; - printProgStr(PSTR("\r\nClass Descriptors:\t")); - Serial.print( tmpbyte, DEC ); - //Printing class descriptors - descr_ptr += 6; //advance buffer pointer - for( uint8_t i = 0; i < tmpbyte; i++ ) { - uint8_t tmpdata; - HID_CLASS_DESCRIPTOR* hidclass_ptr = ( HID_CLASS_DESCRIPTOR* )descr_ptr; - tmpdata = hidclass_ptr->bDescriptorType; - printProgStr(PSTR("\r\nClass Descriptor Type:\t")); - Serial.print( tmpdata, HEX ); - if(( tmpdata < 0x21 ) || ( tmpdata > 0x2f )) { - printProgStr(PSTR(" Invalid")); - } - switch( tmpdata ) { - case 0x21: - printProgStr(PSTR(" HID")); - break; - case 0x22: - printProgStr(PSTR(" Report")); - break; - case 0x23: - printProgStr(PSTR(" Physical")); - break; - default: - printProgStr(PSTR(" Reserved")); - break; - }//switch( tmpdata - printProgStr(PSTR("\r\nClass Descriptor Length:")); - Serial.print( hidclass_ptr->wDescriptorLength ); - printProgStr(PSTR(" bytes")); - printProgStr(PSTR("\r\n\nHID report descriptor:\r\n")); - getReportDescr( DEVADDR, 0 , hidclass_ptr->wDescriptorLength, pf, USB_NAK_LIMIT ); - descr_ptr += 3; //advance to the next record - }//for( uint8_t i=... - return; -} -/*function to print unknown descriptor */ -void printunkdescr( char* descr_ptr ) -{ - byte length = *descr_ptr; - byte i; - printProgStr(PSTR("\r\nUnknown descriptor:")); - printProgStr(PSTR("Length:\t\t")); - print_hex( *descr_ptr, 8 ); - printProgStr(PSTR("\r\nType:\t\t")); - print_hex( *(descr_ptr + 1 ), 8 ); - printProgStr(PSTR("\r\nContents:\t")); - descr_ptr += 2; - for( i = 0; i < length; i++ ) { - print_hex( *descr_ptr, 8 ); - descr_ptr++; - } -} -/* Control-IN transfer with callback. Sets address, endpoint, fills control packet with necessary data, dispatches control packet, and initiates bulk IN transfer */ -/* Control, data, and setup stages combined from standard USB library to be able to read large data blocks. Restricted to control-IN transfers with data stage */ -/* data read and MAX3421E RECV FIFO buffer release shall be performed by parse_func callback */ -/* return codes: */ -/* 00 = success */ -/* 01-0f = non-zero HRSLT */ -byte ctrlXfer( byte addr, byte ep, byte bmReqType, byte bRequest, byte wValLo, byte wValHi, unsigned int wInd, uint16_t nbytes, PARSE parse_func, uint16_t nak_limit = USB_NAK_LIMIT ) -{ - byte rcode; - SETUP_PKT sp; - EP_RECORD* ep_rec = Usb.getDevTableEntry( addr, ep ); - byte pktsize; - byte maxpktsize = ep_rec->MaxPktSize; - unsigned int xfrlen = 0; - /**/ - Max.regWr( rPERADDR, addr ); //set peripheral address - /* fill in setup packet */ - sp.ReqType_u.bmRequestType = bmReqType; - sp.bRequest = bRequest; - sp.wVal_u.wValueLo = wValLo; - sp.wVal_u.wValueHi = wValHi; - sp.wIndex = wInd; - sp.wLength = nbytes; - Max.bytesWr( rSUDFIFO, 8, ( char *)&sp ); //transfer to setup packet FIFO - rcode = Usb.dispatchPkt( tokSETUP, ep, nak_limit ); //dispatch packet - //Serial.println("Setup packet"); //DEBUG - if( rcode ) { //return HRSLT if not zero - printProgStr(PSTR("\r\nSetup packet error: ")); - Serial.print( rcode, HEX ); - return( rcode ); - } - /* Data stage */ - //ep_rec->rcvToggle = bmRCVTOG1; - Max.regWr( rHCTL, bmRCVTOG1 ); //set toggle - while( 1 ) { //exited by break - /* request data */ - rcode = Usb.dispatchPkt( tokIN, ep, nak_limit ); - if( rcode ) { - printProgStr(PSTR("\r\nData Stage Error: ")); - Serial.print( rcode, HEX ); - return( rcode ); - } - /* check for RCVDAVIRQ and generate error if not present */ - /* the only case when absense of RCVDAVIRQ makes sense is when toggle error occured. Need to add handling for that */ - if(( Max.regRd( rHIRQ ) & bmRCVDAVIRQ ) == 0 ) { - printProgStr(PSTR("\r\nData Toggle error.")); - return ( 0xf0 ); - } - pktsize = Max.regRd( rRCVBC ); //get received bytes count - parse_func( pktsize ); //call parse function. Parse is expected to read the FIFO completely - Max.regWr( rHIRQ, bmRCVDAVIRQ ); // Clear the IRQ & free the buffer - xfrlen += pktsize; // add this packet's byte count to total transfer length - /* The transfer is complete under two conditions: */ - /* 1. The device sent a short packet (L.T. maxPacketSize) */ - /* 2. 'nbytes' have been transferred. */ - if (( pktsize < maxpktsize ) || (xfrlen >= nbytes )) { // have we transferred 'nbytes' bytes? - break; - } - }//while( 1 ) - rcode = Usb.dispatchPkt( tokOUTHS, ep, nak_limit ); - if( rcode ) { //return error - printProgStr(PSTR("Status packet error: ")); - Serial.print( rcode, HEX ); - } - return( rcode ); -} -/* Parses bitfields in main items */ -void print_mainbitfield( uint8_t byte_toparse ) -{ - ( byte_toparse & 0x01 ) ? printProgStr(PSTR("Constant,")) : printProgStr(PSTR("Data,")); //bit 0 - ( byte_toparse & 0x02 ) ? printProgStr(PSTR("Variable,")) : printProgStr(PSTR("Array,")); //bit 1 - ( byte_toparse & 0x04 ) ? printProgStr(PSTR("Relative,")) : printProgStr(PSTR("Absolute,")); //... - ( byte_toparse & 0x08 ) ? printProgStr(PSTR("Wrap,")) : printProgStr(PSTR("No Wrap,")); - ( byte_toparse & 0x10 ) ? printProgStr(PSTR("Non Linear,")) : printProgStr(PSTR("Linear,")); - ( byte_toparse & 0x20 ) ? printProgStr(PSTR("No preferred,")) : printProgStr(PSTR("Preferred State,")); - ( byte_toparse & 0x40 ) ? printProgStr(PSTR("Null State,")) : printProgStr(PSTR("No Null Position,")); //bit 6 - ( byte_toparse & 0x40 ) ? printProgStr(PSTR("Volatile( ignore for Input),")) : printProgStr(PSTR("Non-volatile(Ignore for Input),")); //bit 7 -} -/* HID Report Desriptor Parser Callback */ -/* called repeatedly from Control transfer function */ -void HIDreport_parse( uint8_t pkt_size ) -{ -#define B_SIZE 0x03 //bSize bitmask -#define B_TYPE 0x0c //bType bitmask -#define B_TAG 0xf0 //bTag bitmask - /* parser states */ - enum STATE { ITEM_START, DATA_PARSE }; - static STATE state = ITEM_START; - static uint8_t databytes_left = 0; - static uint8_t prefix; //item prefix - type and tag - uint8_t byte_toparse; - uint8_t bType; - uint8_t tmpbyte; - /**/ - while( 1 ) { - if( pkt_size ) { - byte_toparse = Max.regRd( rRCVFIFO ); //read a byte from FIFO - pkt_size--; - } - else { - return; //all bytes read - } - switch( state ) { - case ITEM_START: //start of the record - prefix = byte_toparse >>2; //store prefix for databyte parsing - tmpbyte = byte_toparse & B_SIZE; - /* get item length */ - ( tmpbyte == 0x03 ) ? databytes_left = 4 : databytes_left = tmpbyte; - if( databytes_left ) { - state = DATA_PARSE; //read bytes after prefix - } - printProgStr(PSTR("\r\nLength: ")); - Serial.print( databytes_left, DEC ); - /* get item type */ - bType = ( byte_toparse & B_TYPE ) >>2; - printProgStr(PSTR(" Type: ")); - printProgStr((char*)pgm_read_word(&btypes[ bType ])); - /* get item tag */ - printProgStr(PSTR("\t\tTag: ")); - tmpbyte = ( byte_toparse & B_TAG ) >>4 ; - switch( bType ) { - case 0: //Main - if( tmpbyte < 0x08 ) { - printProgStr(PSTR("Invalid Tag")); - } - else if( tmpbyte > 0x0c ) { - printProgStr( reserved_msg ); - } - else { - printProgStr((char*)pgm_read_word(&maintags[ tmpbyte - 8 /* & 0x03 */])); - //Serial.print("Byte: "); - //Serial.println( tmpbyte, HEX ); - } - break;//case 0 Main - case 1: //Global - ( tmpbyte > 0x0b ) ? printProgStr( reserved_msg ) : printProgStr((char*)pgm_read_word(&globaltags[ tmpbyte ])); - break;//case 1 Global - case 2: //Local - ( tmpbyte > 0x0a ) ? printProgStr( reserved_msg ) : printProgStr((char*)pgm_read_word(&localtags[ tmpbyte ])); - break;//case 2 Local - default: - break; - }//switch( bType... - break;//case ITEM_START - case DATA_PARSE: - switch( prefix ) { - case 0x20: //Main Input - case 0x24: //Main Output - case 0x2c: //Main Feature - /* todo: add parsing 8th bit */ - print_mainbitfield( byte_toparse ); - break; - case 0x28: //Main Collection - if(( byte_toparse > 0x06 ) && ( byte_toparse < 0x80 )) { - printProgStr( reserved_msg ); - } - else if(( byte_toparse > 0x7f ) && ( byte_toparse <= 0xff )) { - printProgStr(PSTR("Vendor-defined")); - } - else { - printProgStr((char*)pgm_read_word(&collections[ byte_toparse ])); - } - break;//case 0x28 Main Collection - //case 0x30: //Main End Collection - case 0x01: //Global Usage Page - switch( byte_toparse ) { //see HID Usage Tables doc v.1.12 page 14 - case 0x00: - case 0x01: - case 0x02: - case 0x03: - case 0x04: - case 0x05: - case 0x06: - case 0x07: - case 0x08: - case 0x09: - case 0x0a: - case 0x0b: - case 0x0c: - case 0x0d: - case 0x0e: - case 0x0f: - case 0x10: - printProgStr((char*)pgm_read_word(&usage_pages[ byte_toparse ])); - break; - case 0x14: - printProgStr(PSTR("Alphanumeric Display")); - break; - case 0x40: - printProgStr(PSTR("Medical Instruments")); - break; - case 0x80: - case 0x81: - case 0x82: - case 0x83: - printProgStr(PSTR("Monitor page")); - break; - case 0x84: - case 0x85: - case 0x86: - case 0x87: - printProgStr(PSTR("Power page")); - break; - case 0x8c: - printProgStr(PSTR("Bar Code Scanner page")); - break; - case 0x8d: - printProgStr(PSTR("Scale page")); - break; - case 0x8e: - printProgStr(PSTR("Magnetic Stripe Reading (MSR) Devices")); - break; - case 0x8f: - printProgStr(PSTR("Reserved Point of Sale pages")); - break; - case 0x90: - printProgStr(PSTR("Camera Control Page")); - break; - case 0x91: - printProgStr(PSTR("Arcade Page")); - break; - default: -// printProgStr(PSTR("Data: ")); -// print_hex( byte_toparse, 8 ); - //databytes_left--; - break; - }//switch case 0x01: //Global Usage Page - }//switch( prefix ... - printProgStr(PSTR(" Data: ")); - print_hex( byte_toparse, 8 ); - databytes_left--; - if( !databytes_left ) { - state = ITEM_START; - } - break; - }//switch( state... - }//while( 1 ... -} -/* prints hex numbers with leading zeroes */ -// copyright, Peter H Anderson, Baltimore, MD, Nov, '07 -// source: http://www.phanderson.com/arduino/arduino_display.html -void print_hex(int v, int num_places) -{ - int mask=0, n, num_nibbles, digit; - - for (n=1; n<=num_places; n++) { - mask = (mask << 1) | 0x0001; - } - v = v & mask; // truncate v to specified number of places - - num_nibbles = num_places / 4; - if ((num_places % 4) != 0) { - ++num_nibbles; - } - do { - digit = ((v >> (num_nibbles-1) * 4)) & 0x0f; - Serial.print(digit, HEX); - } - while(--num_nibbles); -} - -/* given a PROGMEM string, use Serial.print() to send it out */ -/* Some non-intuitive casting necessary: */ -/* printProgStr(PSTR("Func.Mode:\t0x")); */ -/* printProgStr((char*)pgm_read_word(&mtpopNames[(op & 0xFF)])); */ -void printProgStr(const char* str) -{ - if(!str) { - return; - } - char c; - while((c = pgm_read_byte(str++))) { - Serial.print(c,BYTE); - } - return; -}
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