Ashwin Athani / Mbed 2 deprecated mX_USB_HID

mX mbed BaseBoard USB HID

Dependencies:   mbed

USBMouse/usbhid.cpp@0:093612081f64, 2010-12-08 (annotated)

Committer:
ashwin_athani
Date:
Wed Dec 08 06:30:25 2010 +0000
Revision:
0:093612081f64

        

        
Who changed what in which revision?

        

            
                
UserRevisionLine numberNew contents of line

            
            


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/* usbhid.cpp */





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/* USB HID class device */





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/* Copyright (c) Phil Wright 2008 */





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#include "mbed.h"





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#include "usbhid.h"





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#include "asciihid.h"





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/* Endpoint packet sizes */





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#define MAX_PACKET_SIZE_EP1 (64)





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/* HID Class */





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#define HID_CLASS         (3)





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#define HID_SUBCLASS_NONE (0)





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#define HID_PROTOCOL_NONE (0)





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#define HID_DESCRIPTOR    (33)





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#define REPORT_DESCRIPTOR (34)





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/* Class requests */





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#define GET_REPORT (0x1)





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#define GET_IDLE   (0x2)





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#define SET_REPORT (0x9)





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#define SET_IDLE   (0xa)





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/* Descriptors */





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unsigned char deviceDescriptor[] = {





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    0x12,                    /* bLength */





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    DEVICE_DESCRIPTOR,       /* bDescriptorType */





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    0x00,                    /* bcdUSB (LSB) */





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    0x02,                    /* bcdUSB (MSB) */





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    0x00,                    /* bDeviceClass */





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    0x00,                    /* bDeviceSubClass */





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    0x00,                    /* bDeviceprotocol */





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    MAX_PACKET_SIZE_EP0,     /* bMaxPacketSize0 */





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    0x28,                    /* idVendor (LSB) */





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    0x0d,                    /* idVendor (MSB) */





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    0x05,                    /* idProduct (LSB) */





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    0x02,                    /* idProduct (MSB) */





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    0x00,                    /* bcdDevice (LSB) */





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    0x00,                    /* bcdDevice (MSB) */





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    0x00,                    /* iManufacturer */





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    0x00,                    /* iProduct */





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    0x00,                    /* iSerialNumber */





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    0x01                     /* bNumConfigurations */





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    };





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unsigned char configurationDescriptor[] = {





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    0x09,                        /* bLength */





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    CONFIGURATION_DESCRIPTOR,    /* bDescriptorType */





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    0x09+0x09+0x09+0x07,         /* wTotalLength (LSB) */





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    0x00,                        /* wTotalLength (MSB) */





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    0x01,                        /* bNumInterfaces */





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    0x01,                        /* bConfigurationValue */





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    0x00,                        /* iConfiguration */





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    0xc0,                        /* bmAttributes */





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    0x00,                        /* bMaxPower */





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    0x09,                        /* bLength */





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    INTERFACE_DESCRIPTOR,        /* bDescriptorType */    





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    0x00,                        /* bInterfaceNumber */





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    0x00,                        /* bAlternateSetting */





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    0x01,                        /* bNumEndpoints */





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    HID_CLASS,                   /* bInterfaceClass */





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    HID_SUBCLASS_NONE,           /* bInterfaceSubClass */





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    HID_PROTOCOL_NONE,           /* bInterfaceProtocol */





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    0x00,                        /* iInterface */





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    0x09,                        /* bLength */





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    HID_DESCRIPTOR,              /* bDescriptorType */





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    0x11,                        /* bcdHID (LSB) */





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    0x01,                        /* bcdHID (MSB) */





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    0x00,                        /* bCountryCode */





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    0x01,                        /* bNumDescriptors */





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    REPORT_DESCRIPTOR,           /* bDescriptorType */





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    0x79,                        /* wDescriptorLength (LSB) */





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    0x00,                        /* wDescriptorLength (MSB) */





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    0x07,                        /* bLength */





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    ENDPOINT_DESCRIPTOR,         /* bDescriptorType */





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    0x81,                        /* bEndpointAddress */





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    0x03,                        /* bmAttributes */





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    MAX_PACKET_SIZE_EP1,         /* wMaxPacketSize (LSB) */





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    0x00,                        /* wMaxPacketSize (MSB) */





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    0x0a,                        /* bInterval */





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    };





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/* HID Class Report Descriptor */





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/* Short items: size is 0, 1, 2 or 3 specifying 0, 1, 2 or 4 (four) bytes of data as per HID Class standard */





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/* Main items */





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#define INPUT(size)             (0x80 | size)





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#define OUTPUT(size)            (0x90 | size)





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#define FEATURE(size)           (0xb0 | size)





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#define COLLECTION(size)        (0xa0 | size)





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#define END_COLLECTION(size)    (0xc0 | size)





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/* Global items */





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#define USAGE_PAGE(size)        (0x04 | size)





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#define LOGICAL_MIN(size)       (0x14 | size)





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#define LOGICAL_MAX(size)       (0x24 | size)





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#define PHYSICAL_MIN(size)      (0x34 | size)





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#define PHYSICAL_MAX(size)      (0x44 | size)





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#define UNIT_EXPONENT(size)     (0x54 | size)





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#define UNIT(size)              (0x64 | size)





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#define REPORT_SIZE(size)       (0x74 | size)





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#define REPORT_ID(size)         (0x84 | size)





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#define REPORT_COUNT(size)      (0x94 | size)





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#define PUSH(size)              (0xa4 | size)





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#define POP(size)               (0xb4 | size)





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/* Local items */





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#define USAGE(size)             (0x08 | size)





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#define USAGE_MIN(size)         (0x18 | size)





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#define USAGE_MAX(size)         (0x28 | size)





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#define DESIGNATOR_INDEX(size)  (0x38 | size)





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#define DESIGNATOR_MIN(size)    (0x48 | size)





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#define DESIGNATOR_MAX(size)    (0x58 | size)





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#define STRING_INDEX(size)      (0x78 | size)





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#define STRING_MIN(size)        (0x88 | size)





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#define STRING_MAX(size)        (0x98 | size)





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#define DELIMITER(size)         (0xa8 | size)





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#define REPORT_ID_KEYBOARD      (1)





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#define REPORT_ID_MOUSE         (2)





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#define MAX_REPORT_SIZE         (8)





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unsigned char reportDescriptor[] = {





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/* Keyboard */





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USAGE_PAGE(1),      0x01,





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USAGE(1),           0x06,





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COLLECTION(1),      0x01,





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REPORT_ID(1),       REPORT_ID_KEYBOARD,





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USAGE_PAGE(1),      0x07,





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USAGE_MIN(1),       0xE0,





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USAGE_MAX(1),       0xE7,





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LOGICAL_MIN(1),     0x00,





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LOGICAL_MAX(1),     0x01,





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REPORT_SIZE(1),     0x01,





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REPORT_COUNT(1),    0x08,





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INPUT(1),           0x02,





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REPORT_COUNT(1),    0x01,





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REPORT_SIZE(1),     0x08,





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INPUT(1),           0x01,





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REPORT_COUNT(1),    0x05,





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REPORT_SIZE(1),     0x01,





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USAGE_PAGE(1),      0x08,





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USAGE_MIN(1),       0x01,





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USAGE_MAX(1),       0x05,





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OUTPUT(1),          0x02,





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REPORT_COUNT(1),    0x01,





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REPORT_SIZE(1),     0x03,





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OUTPUT(1),          0x01,





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REPORT_COUNT(1),    0x06,





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REPORT_SIZE(1),     0x08,





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LOGICAL_MIN(1),     0x00,





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LOGICAL_MAX(2),     0xff, 0x00,





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USAGE_PAGE(1),      0x07,





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USAGE_MIN(1),       0x00,





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USAGE_MAX(2),       0xff, 0x00,





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INPUT(1),           0x00,





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END_COLLECTION(0),





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/* Mouse */





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USAGE_PAGE(1),      0x01, 





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USAGE(1),           0x02, 





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COLLECTION(1),      0x01, 





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USAGE(1),           0x01, 





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COLLECTION(1),      0x00, 





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REPORT_ID(1),       REPORT_ID_MOUSE,





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REPORT_COUNT(1),    0x03,





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REPORT_SIZE(1),     0x01,





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USAGE_PAGE(1),      0x09,





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USAGE_MIN(1),       0x1,





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USAGE_MAX(1),       0x3,





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LOGICAL_MIN(1),     0x00,





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LOGICAL_MAX(1),     0x01,





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INPUT(1),           0x02,





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REPORT_COUNT(1),    0x01,





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REPORT_SIZE(1),     0x05,





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INPUT(1),           0x01,





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REPORT_COUNT(1),    0x03,





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REPORT_SIZE(1),     0x08,





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USAGE_PAGE(1),      0x01,





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USAGE(1),           0x30,





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USAGE(1),           0x31,





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USAGE(1),           0x38,





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LOGICAL_MIN(1),     0x81,





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LOGICAL_MAX(1),     0x7f,





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INPUT(1),           0x06,





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END_COLLECTION(0),





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END_COLLECTION(0),





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};





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volatile bool complete;





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volatile bool configured;





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unsigned char outputReport[MAX_REPORT_SIZE];





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usbhid::usbhid()





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{





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    configured = false;





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    connect();





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}





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void usbhid::deviceEventReset()





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{





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    configured = false;





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    /* Must call base class */ 





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    usbdevice::deviceEventReset();





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}





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bool usbhid::requestSetConfiguration(void)





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{





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    bool result;





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    /* Configure IN interrupt endpoint */





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    realiseEndpoint(EP1IN, MAX_PACKET_SIZE_EP1);





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    enableEndpointEvent(EP1IN);





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    /* Must call base class */





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    result = usbdevice::requestSetConfiguration();





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    if (result)





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    {





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        /* Now configured */





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        configured = true;





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    }





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    return result;





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}





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bool usbhid::requestGetDescriptor(void)





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{





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    bool success = false;





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    switch (DESCRIPTOR_TYPE(transfer.setup.wValue))





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    {





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   239

        case DEVICE_DESCRIPTOR:





ashwin_athani

0:093612081f64


   240

            transfer.remaining = sizeof(deviceDescriptor);





ashwin_athani

0:093612081f64


   241

            transfer.ptr = deviceDescriptor;





ashwin_athani

0:093612081f64


   242

            transfer.direction = DEVICE_TO_HOST;





ashwin_athani

0:093612081f64


   243

            success = true;





ashwin_athani

0:093612081f64


   244

            break;





ashwin_athani

0:093612081f64


   245

        case CONFIGURATION_DESCRIPTOR:





ashwin_athani

0:093612081f64


   246

            transfer.remaining =  sizeof(configurationDescriptor);





ashwin_athani

0:093612081f64


   247

            transfer.ptr = configurationDescriptor;





ashwin_athani

0:093612081f64


   248

            transfer.direction = DEVICE_TO_HOST;





ashwin_athani

0:093612081f64


   249

            success = true;





ashwin_athani

0:093612081f64


   250

            break;





ashwin_athani

0:093612081f64


   251

        case STRING_DESCRIPTOR:





ashwin_athani

0:093612081f64


   252

        case INTERFACE_DESCRIPTOR:





ashwin_athani

0:093612081f64


   253

        case ENDPOINT_DESCRIPTOR:





ashwin_athani

0:093612081f64


   254

            /* TODO: Support is optional, not implemented here */





ashwin_athani

0:093612081f64


   255

            break;





ashwin_athani

0:093612081f64


   256

        case HID_DESCRIPTOR:





ashwin_athani

0:093612081f64


   257

            transfer.remaining = 0x09; /* TODO: Fix hard coded size/offset */





ashwin_athani

0:093612081f64


   258

            transfer.ptr = &configurationDescriptor[18];





ashwin_athani

0:093612081f64


   259

            transfer.direction = DEVICE_TO_HOST;





ashwin_athani

0:093612081f64


   260

            success = true;            





ashwin_athani

0:093612081f64


   261

            break;





ashwin_athani

0:093612081f64


   262

        case REPORT_DESCRIPTOR:





ashwin_athani

0:093612081f64


   263

            transfer.remaining = sizeof(reportDescriptor);





ashwin_athani

0:093612081f64


   264

            transfer.ptr = reportDescriptor;





ashwin_athani

0:093612081f64


   265

            transfer.direction = DEVICE_TO_HOST;





ashwin_athani

0:093612081f64


   266

            success = true;            





ashwin_athani

0:093612081f64


   267

            break;





ashwin_athani

0:093612081f64


   268

        default:





ashwin_athani

0:093612081f64


   269

            break;    





ashwin_athani

0:093612081f64


   270

    }





ashwin_athani

0:093612081f64


   271

    





ashwin_athani

0:093612081f64


   272

    return success;





ashwin_athani

0:093612081f64


   273

}





ashwin_athani

0:093612081f64


   274







ashwin_athani

0:093612081f64


   275

bool usbhid::requestSetup(void)





ashwin_athani

0:093612081f64


   276

{





ashwin_athani

0:093612081f64


   277

    /* Process class requests */





ashwin_athani

0:093612081f64


   278

    bool success = false;





ashwin_athani

0:093612081f64


   279







ashwin_athani

0:093612081f64


   280

    if (transfer.setup.bmRequestType.Type == CLASS_TYPE)





ashwin_athani

0:093612081f64


   281

    {





ashwin_athani

0:093612081f64


   282

        switch (transfer.setup.bRequest)





ashwin_athani

0:093612081f64


   283

        {





ashwin_athani

0:093612081f64


   284

             case SET_REPORT:





ashwin_athani

0:093612081f64


   285

                 switch (transfer.setup.wValue & 0xff)





ashwin_athani

0:093612081f64


   286

                 {





ashwin_athani

0:093612081f64


   287

                    case REPORT_ID_KEYBOARD:                     





ashwin_athani

0:093612081f64


   288

                        /* TODO: LED state */





ashwin_athani

0:093612081f64


   289

                        transfer.remaining = sizeof(outputReport);





ashwin_athani

0:093612081f64


   290

                        transfer.ptr = outputReport;





ashwin_athani

0:093612081f64


   291

                        transfer.direction = HOST_TO_DEVICE;





ashwin_athani

0:093612081f64


   292

                        success = true;    





ashwin_athani

0:093612081f64


   293

                        break;





ashwin_athani

0:093612081f64


   294

                    default:





ashwin_athani

0:093612081f64


   295

                        break;





ashwin_athani

0:093612081f64


   296

                 }





ashwin_athani

0:093612081f64


   297

                 break;





ashwin_athani

0:093612081f64


   298

             default:





ashwin_athani

0:093612081f64


   299

                 break;





ashwin_athani

0:093612081f64


   300

        }





ashwin_athani

0:093612081f64


   301

    }





ashwin_athani

0:093612081f64


   302

    





ashwin_athani

0:093612081f64


   303

    if (success)





ashwin_athani

0:093612081f64


   304

    {





ashwin_athani

0:093612081f64


   305

        /* We've handled this request */





ashwin_athani

0:093612081f64


   306

        return true;





ashwin_athani

0:093612081f64


   307

    }





ashwin_athani

0:093612081f64


   308

    





ashwin_athani

0:093612081f64


   309

    return usbdevice::requestSetup();





ashwin_athani

0:093612081f64


   310

}





ashwin_athani

0:093612081f64


   311







ashwin_athani

0:093612081f64


   312

bool usbhid::sendInputReport(unsigned char id, unsigned char *data, unsigned char size)





ashwin_athani

0:093612081f64


   313

{





ashwin_athani

0:093612081f64


   314

    /* Send an Input Report */





ashwin_athani

0:093612081f64


   315

    /* If data is NULL an all zero report is sent */





ashwin_athani

0:093612081f64


   316

    





ashwin_athani

0:093612081f64


   317

    static unsigned char report[MAX_REPORT_SIZE+1]; /* +1 for report ID */





ashwin_athani

0:093612081f64


   318

    unsigned char i;





ashwin_athani

0:093612081f64


   319







ashwin_athani

0:093612081f64


   320

    if (size > MAX_REPORT_SIZE)





ashwin_athani

0:093612081f64


   321

    {





ashwin_athani

0:093612081f64


   322

        return false;





ashwin_athani

0:093612081f64


   323

    }





ashwin_athani

0:093612081f64


   324

    





ashwin_athani

0:093612081f64


   325

    /* Add report ID */





ashwin_athani

0:093612081f64


   326

    report[0]=id;





ashwin_athani

0:093612081f64


   327







ashwin_athani

0:093612081f64


   328

    /* Add report data */





ashwin_athani

0:093612081f64


   329

    if (data != NULL)





ashwin_athani

0:093612081f64


   330

    {    





ashwin_athani

0:093612081f64


   331

        for (i=0; i<size; i++)





ashwin_athani

0:093612081f64


   332

        {





ashwin_athani

0:093612081f64


   333

            report[i+1] = *data++;





ashwin_athani

0:093612081f64


   334

        }





ashwin_athani

0:093612081f64


   335

    }





ashwin_athani

0:093612081f64


   336

    else





ashwin_athani

0:093612081f64


   337

    {    





ashwin_athani

0:093612081f64


   338

        for (i=0; i<size; i++)





ashwin_athani

0:093612081f64


   339

        {





ashwin_athani

0:093612081f64


   340

            report[i+1] = 0;





ashwin_athani

0:093612081f64


   341

        }





ashwin_athani

0:093612081f64


   342

    }    





ashwin_athani

0:093612081f64


   343

    





ashwin_athani

0:093612081f64


   344

    /* Block if not configured */





ashwin_athani

0:093612081f64


   345

    while (!configured);





ashwin_athani

0:093612081f64


   346

    





ashwin_athani

0:093612081f64


   347

    /* Send report */





ashwin_athani

0:093612081f64


   348

    complete = false;





ashwin_athani

0:093612081f64


   349

    disableEvents();





ashwin_athani

0:093612081f64


   350

    endpointWrite(EP1IN, report, size+1); /* +1 for report ID */





ashwin_athani

0:093612081f64


   351

    enableEvents();





ashwin_athani

0:093612081f64


   352

    





ashwin_athani

0:093612081f64


   353

    /* Wait for completion */





ashwin_athani

0:093612081f64


   354

    while(!complete && configured);    





ashwin_athani

0:093612081f64


   355

    return true;





ashwin_athani

0:093612081f64


   356

}





ashwin_athani

0:093612081f64


   357

    





ashwin_athani

0:093612081f64


   358

void usbhid::endpointEventEP1In(void)





ashwin_athani

0:093612081f64


   359

{





ashwin_athani

0:093612081f64


   360

    complete = true;





ashwin_athani

0:093612081f64


   361

}





ashwin_athani

0:093612081f64


   362







ashwin_athani

0:093612081f64


   363

bool usbhid::keyboard(char c)





ashwin_athani

0:093612081f64


   364

{





ashwin_athani

0:093612081f64


   365

    /* Send a simulated keyboard keypress. Returns true if successful. */    





ashwin_athani

0:093612081f64


   366

    unsigned char report[8]={0,0,0,0,0,0,0,0};





ashwin_athani

0:093612081f64


   367







ashwin_athani

0:093612081f64


   368

    report[0] = keymap[c].modifier;





ashwin_athani

0:093612081f64


   369

    report[2] = keymap[c].usage;





ashwin_athani

0:093612081f64


   370







ashwin_athani

0:093612081f64


   371

    /* Key down */





ashwin_athani

0:093612081f64


   372

    if (!sendInputReport(REPORT_ID_KEYBOARD, report, 8))





ashwin_athani

0:093612081f64


   373

    {





ashwin_athani

0:093612081f64


   374

        return false;





ashwin_athani

0:093612081f64


   375

    }





ashwin_athani

0:093612081f64


   376







ashwin_athani

0:093612081f64


   377

    /* Key up */





ashwin_athani

0:093612081f64


   378

    if (!sendInputReport(REPORT_ID_KEYBOARD, NULL, 8))





ashwin_athani

0:093612081f64


   379

    {





ashwin_athani

0:093612081f64


   380

        return false;





ashwin_athani

0:093612081f64


   381

    }    





ashwin_athani

0:093612081f64


   382







ashwin_athani

0:093612081f64


   383

    return true;





ashwin_athani

0:093612081f64


   384

}





ashwin_athani

0:093612081f64


   385







ashwin_athani

0:093612081f64


   386

bool usbhid::keyboard(char *string)





ashwin_athani

0:093612081f64


   387

{





ashwin_athani

0:093612081f64


   388

    /* Send a string of characters. Returns true if successful. */





ashwin_athani

0:093612081f64


   389

    do {





ashwin_athani

0:093612081f64


   390

        if (!keyboard(*string++))





ashwin_athani

0:093612081f64


   391

        {





ashwin_athani

0:093612081f64


   392

            return false;





ashwin_athani

0:093612081f64


   393

        }





ashwin_athani

0:093612081f64


   394

    } while (*string != '\0');





ashwin_athani

0:093612081f64


   395







ashwin_athani

0:093612081f64


   396

    return true;





ashwin_athani

0:093612081f64


   397

}





ashwin_athani

0:093612081f64


   398







ashwin_athani

0:093612081f64


   399

bool usbhid::mouse(signed char x, signed char y, unsigned char buttons, signed char wheel)





ashwin_athani

0:093612081f64


   400

{





ashwin_athani

0:093612081f64


   401

    /* Send a simulated mouse event. Returns true if successful. */    





ashwin_athani

0:093612081f64


   402

    unsigned char report[4]={0,0,0,0};





ashwin_athani

0:093612081f64


   403







ashwin_athani

0:093612081f64


   404

    report[0] = buttons;





ashwin_athani

0:093612081f64


   405

    report[1] = x;





ashwin_athani

0:093612081f64


   406

    report[2] = y;





ashwin_athani

0:093612081f64


   407

    report[3] = wheel;





ashwin_athani

0:093612081f64


   408

    





ashwin_athani

0:093612081f64


   409

    if (!sendInputReport(REPORT_ID_MOUSE, report, 4))





ashwin_athani

0:093612081f64


   410

    {





ashwin_athani

0:093612081f64


   411

        return false;





ashwin_athani

0:093612081f64


   412

    }    





ashwin_athani

0:093612081f64


   413







ashwin_athani

0:093612081f64


   414

    return true;





ashwin_athani

0:093612081f64


   415

}