elyon
Joined: 21 Mar 2017
Posts: 9
Location: Italy
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| HID USB Mouse descriptor doesn't work |
 Posted: Wed Apr 19, 2017 9:19 am |
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Hi all! 
I'm trying to modify the usb_desc_mouse.h example to change logical minimum and maximum of X and Y to emulate mouse with absolute coordinates with my pic18f2550, but everytime I change something nothing works any more.
Here is my entire header
| Code: |
///////////////////////////////////////////////////////////////////////////
/// usb_desc_mouse.h ////
//// ////
//// An example set of device / configuration descriptors. ////
//// This set works exclusively with ex_usb_mouse.c example. ////
//// ////
///////////////////////////////////////////////////////////////////////////
//// ////
//// Version History: ////
//// ////
//// March 5th, 2009: ////
//// Cleanup for Wizard. ////
//// PIC24 Initial release. ////
//// ////
//// June 20th, 2005: ////
//// Initial 18Fxx5x release ////
//// ////
//// March 21st, 2005: ////
//// EP 0x81 now uses USB_EP1_TX_SIZE to define max packet size, to ////
//// make it easier for dynamically changed code. ////
//// EP 0x81 will now use 1ms polling interval if using a full speed ////
//// device. ////
//// ////
//// June 24th, 2002: Cleanup ////
//// ////
///////////////////////////////////////////////////////////////////////////
//// (C) Copyright 1996,2005 Custom Computer Services ////
//// This source code may only be used by licensed users of the CCS ////
//// C compiler. This source code may only be distributed to other ////
//// licensed users of the CCS C compiler. No other use, ////
//// reproduction or distribution is permitted without written ////
//// permission. Derivative programs created using this software ////
//// in object code form are not restricted in any way. ////
///////////////////////////////////////////////////////////////////////////
#IFNDEF __USB_DESCRIPTORS__
#DEFINE __USB_DESCRIPTORS__
///////// config options, although it's best to leave alone for this demo /////
#define USB_CONFIG_PID 0x0022
#define USB_CONFIG_VID 0x0461
#define USB_CONFIG_BUS_POWER 100 //100mA (range is 0..500)
#define USB_CONFIG_VERSION 0x0100 //01.00 //range is 00.00 to 99.99
//////// end config ///////////////////////////////////////////////////////////
#DEFINE USB_HID_DEVICE TRUE //Tells the CCS PIC USB firmware
//to include HID handling code.
//turn on EP1 for IN interrupt transfers. (IN = PIC -> PC)
#define USB_EP1_TX_ENABLE USB_ENABLE_INTERRUPT
#ifndef USB_EP1_TX_SIZE
#define USB_EP1_TX_SIZE 16 //max packet size of this endpoint
#endif
#include <usb.h>
//////////////////////////////////////////////////////////////////
///
/// HID Report. Tells HID driver how to handle and deal with
/// received data. HID Reports can be extremely complex,
/// see HID specifcation for help on writing your own.
///
/// This examples configures HID driver to take received data
/// as mouse x, y and button data.
///
//////////////////////////////////////////////////////////////////
const char USB_CLASS_SPECIFIC_DESC[] =
{
0x05, 0x01, // usage page (generic desktop Choose the usage page "mouse" is on
0x09, 0x02, // usage (mouse) Device is a mouse
0xA1, 0x01, // collection (application) This collection encompasses the report format
0x09, 0x01, // usage (pointer) Choose the key code usage page
0xA1, 0x00, // collection (physical) Physical collection
0x05, 0x09, // usage page (buttons) Choose the "button" usage page
0x19, 0x01, // usage minimum (1) There are three buttons
0x29, 0x03, // usage maximum (3)
0x15, 0x00, // logical minimum (0) Each button is represented by one bit
0x25, 0x01, // logical maximum (1)
0x95, 0x03, // report count (3) Three reports, one bit each
0x75, 0x01, // report size (1)
0x81, 0x02, // input (data, variable, absolute) Defined bits above are data bits
0x95, 0x01, // report count (1) One report, five bits in length
0x75, 0x05, // report size (5)
0x81, 0x01, // input (constant) Bit stuff to fill byte
0x05, 0x01, // usage page (generic desktop) Choose the usage pare "X" and "Y" are on
0x09, 0x30, // usage (X) X direction of pointer
0x09, 0x31, // usage (Y) Y direction of pointer
0x09, 0x38 // usage (wheel)
0x15, 0x00, // logical minimum (-0)
0x25, 0xFF, 0x00 // logical maximum (255)
0x75, 0x08, // report size (8) Two reports, eight bits each
0x95, 0x03, // report count (3)
0x81, 0x06, // input (data, variable, absolute) Defined bits above are data bits
0xC0, // end collection End physical collection
0xC0 // end collection End application collection
};
//if a class has an extra descriptor not part of the config descriptor,
// this lookup table defines where to look for it in the const
// USB_CLASS_SPECIFIC_DESC[] array.
//first element is the config number (if your device has more than one config)
//second element is which interface number
//set element to 0xFFFF if this config/interface combo doesn't exist
const int16 USB_CLASS_SPECIFIC_DESC_LOOKUP[USB_NUM_CONFIGURATIONS][1] =
{
//config 1
//interface 0
0
};
//if a class has an extra descriptor not part of the config descriptor,
// this lookup table defines the size of that descriptor.
//first element is the config number (if your device has more than one config)
//second element is which interface number
//set element to 0xFFFF if this config/interface combo doesn't exist
const int16 USB_CLASS_SPECIFIC_DESC_LOOKUP_SIZE[USB_NUM_CONFIGURATIONS][1] =
{
//config 1
//interface 0
sizeof(USB_CLASS_SPECIFIC_DESC)
};
//////////////////////////////////////////////////////////////////
///
/// start config descriptor
/// right now we only support one configuration descriptor.
/// the config, interface, class, and endpoint goes into this array.
///
//////////////////////////////////////////////////////////////////
#DEFINE USB_TOTAL_CONFIG_LEN 34 //config+interface+class+endpoint
const char USB_CONFIG_DESC[] = {
//IN ORDER TO COMPLY WITH WINDOWS HOSTS, THE ORDER OF THIS ARRAY MUST BE:
// config(s)
// interface(s)
// class(es)
// endpoint(s)
//config_descriptor for config index 1
USB_DESC_CONFIG_LEN, //length of descriptor size ==1
USB_DESC_CONFIG_TYPE, //constant CONFIGURATION (CONFIGURATION 0x02) ==2
USB_TOTAL_CONFIG_LEN,0, //size of all data returned for this config ==3,4
1, //number of interfaces this device supports ==5
0x01, //identifier for this configuration. (IF we had more than one configurations) ==6
0x00, //index of string descriptor for this configuration ==7
#if USB_CONFIG_BUS_POWER
0x80, //bit 6=1 if self powered, bit 5=1 if supports remote wakeup (we don't), bits 0-4 unused and bit7=1 ==8
#else
0xC0, //bit 6=1 if self powered, bit 5=1 if supports remote wakeup (we don't), bits 0-4 unused and bit7=1 ==8
#endif
USB_CONFIG_BUS_POWER/2, //maximum bus power required (maximum milliamperes/2) (0x32 = 100mA) ==9
//interface descriptor 1
USB_DESC_INTERFACE_LEN, //length of descriptor =10
USB_DESC_INTERFACE_TYPE, //constant INTERFACE (INTERFACE 0x04) =11
0x00, //number defining this interface (IF we had more than one interface) ==12
0x00, //alternate setting ==13
1, //number of endpoints, except 0 ==14
0x03, //class code, 03 = HID ==15
0x00, //0x01, //subclass code //boot ==16
0x00, //0x02, //protocol code ==17
0x00, //index of string descriptor for interface ==18
//class descriptor 1 (HID)
USB_DESC_CLASS_LEN, //length of descriptor ==19
USB_DESC_CLASS_TYPE, //dscriptor type (0x21 == HID) ==20
0x00,0x01, //hid class release number (1.0) (try 1.10) ==21,22
0x00, //localized country code (0 = none) ==23
0x01, //number of hid class descrptors that follow (1) ==24
0x22, //report descriptor type (0x22 == HID) ==25
USB_CLASS_SPECIFIC_DESC_LOOKUP_SIZE[0][0], 0x00, //length of report descriptor ==26,27
//endpoint descriptor
USB_DESC_ENDPOINT_LEN, //length of descriptor ==28
USB_DESC_ENDPOINT_TYPE, //constant ENDPOINT (ENDPOINT 0x05) ==29
0x81, //endpoint number and direction (0x81 = EP1 IN) ==30
USB_ENDPOINT_TYPE_INTERRUPT, //transfer type supported (0x03 is interrupt) ==31
USB_EP1_TX_SIZE,0x00, //maximum packet size supported ==32,33
10 //polling interval, in ms. (cant be smaller than 10 for slow speed devices) ==34
};
//****** BEGIN CONFIG DESCRIPTOR LOOKUP TABLES ********
//since we can't make pointers to constants in certain pic16s, this is an offset table to find
// a specific descriptor in the above table.
//NOTE: DO TO A LIMITATION OF THE CCS CODE, ALL HID INTERFACES MUST START AT 0 AND BE SEQUENTIAL
// FOR EXAMPLE, IF YOU HAVE 2 HID INTERFACES THEY MUST BE INTERFACE 0 AND INTERFACE 1
#define USB_NUM_HID_INTERFACES 1
//the maximum number of interfaces seen on any config
//for example, if config 1 has 1 interface and config 2 has 2 interfaces you must define this as 2
#define USB_MAX_NUM_INTERFACES 1
//define how many interfaces there are per config. [0] is the first config, etc.
const char USB_NUM_INTERFACES[USB_NUM_CONFIGURATIONS]={1};
//define where to find class descriptors
//first dimension is the config number
//second dimension specifies which interface
//last dimension specifies which class in this interface to get, but most will only have 1 class per interface
//if a class descriptor is not valid, set the value to 0xFFFF
const int16 USB_CLASS_DESCRIPTORS[USB_NUM_CONFIGURATIONS][USB_NUM_HID_INTERFACES][1]=
{
//config 1
//interface 0
//class 1
18
};
#if (sizeof(USB_CONFIG_DESC) != USB_TOTAL_CONFIG_LEN)
#error USB_TOTAL_CONFIG_LEN not defined correctly
#endif
//////////////////////////////////////////////////////////////////
///
/// start device descriptors
///
//////////////////////////////////////////////////////////////////
const char USB_DEVICE_DESC[] = {
//starts of with device configuration. only one possible
USB_DESC_DEVICE_LEN, //the length of this report ==1
0x01, //the constant DEVICE (DEVICE 0x01) ==2
0x10,0x01, //usb version in bcd (pic167xx is 1.1) ==3,4
0x00, //class code ==5
0x00, //subclass code ==6
0x00, //protocol code ==7
USB_MAX_EP0_PACKET_LENGTH, //max packet size for endpoint 0. (SLOW SPEED SPECIFIES 8) ==8
USB_CONFIG_VID & 0xFF, ((USB_CONFIG_VID >> 8) & 0xFF), //vendor id ==9, 10
USB_CONFIG_PID & 0xFF, ((USB_CONFIG_PID >> 8) & 0xFF), //product id, don't use 0xffff ==11, 12
USB_CONFIG_VERSION & 0xFF, ((USB_CONFIG_VERSION >> 8) & 0xFF), //device release number ==13,14
0x01, //index of string description of manufacturer. therefore we point to string_1 array (see below) ==15
0x02, //index of string descriptor of the product ==16
0x00, //index of string descriptor of serial number ==17
USB_NUM_CONFIGURATIONS //number of possible configurations ==18
};
#if (sizeof(USB_DEVICE_DESC) != USB_DESC_DEVICE_LEN)
#error USB_DESC_DEVICE_LEN not defined correctly
#endif
//////////////////////////////////////////////////////////////////
///
/// start string descriptors
/// String 0 is a special language string, and must be defined. People in U.S.A. can leave this alone.
///
//////////////////////////////////////////////////////////////////
//the offset of the starting location of each string. offset[0] is the start of string 0, offset[1] is the start of string 1, etc.
const char USB_STRING_DESC_OFFSET[]={0,4,12};
//number of strings you have, including string 0.
#define USB_STRING_DESC_COUNT sizeof(USB_STRING_DESC_OFFSET)
// Here is where the "CCS" Manufacturer string and "CCS USB Mouse" are stored.
// Strings are saved as unicode.
char const USB_STRING_DESC[]={
//string 0
4, //length of string index
USB_DESC_STRING_TYPE, //descriptor type 0x03 (STRING)
0x09,0x04, //Microsoft Defined for US-English
//string 1
8, //length of string index
USB_DESC_STRING_TYPE, //descriptor type 0x03 (STRING)
'C',0,
'C',0,
'S',0,
//string 2
28, //length of string index
USB_DESC_STRING_TYPE, //descriptor type 0x03 (STRING)
'C',0,
'C',0,
'S',0,
' ',0,
'U',0,
'S',0,
'B',0,
' ',0,
'M',0,
'o',0,
'u',0,
's',0,
'e',0
};
#endif
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As you see, I changed line 55:
| Code: |
#define USB_EP1_TX_SIZE 16 //max packet size of this endpoint
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From 8 to 16, and line 94:
| Code: |
0x26, 0xFF, 0x00 // logical maximum (255)
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where I added 1 byte 0x00 to set maximum to 255 (I tried also without 0x00 and with 0x25 and with packet size 8, but It did not work, anyway).
I've read the HID 1.11 pdf from USB.org and I should have understood how to modify the descriptor, but, obviously, I did not understand so well as I should 
To send packets to my PC, I use usb_put_packet function (I don't know if is it the right function).
I think that the problem is not in the USB_CLASS_SPECIFIC_DESC, but it is somewhere in the rest of code (maybe in interface, hid or endpoint descriptor?)
There is someone that can help me? 
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