Mouse example is not working in Pic18F2450
Hello all,
I am new to USB.
I have been trying for more than a week to get the mouse example working in Pic18F2450 but it either doesn't get recognized by PC or it says unknown usb device.
I am using PicBasic Pro 2.60 and Pic uses external 24Mhz crystal in low speed usb.
Here is the code:
Code:Include "hid_desc.bas" ' Include the HID descriptors Define OSC 24 buffer Var Byte[3] loopcnt Var Byte state Var Byte Pause 10 USBInit ' Get USB going buffer[0] = 0 buffer[1] = 0 buffer[2] = 0 movecursor: For state = 0 To 3 ' Move through each state For loopcnt = 1 To 16 ' 16 steps in each direction Branch state, [up, right, down, left] up: buffer[1] = 0 buffer[2] = -2 Goto endgame down: buffer[1] = 0 buffer[2] = 2 Goto endgame left: buffer[1] = -2 buffer[2] = 0 Goto endgame right: buffer[1] = 2 buffer[2] = 0 endgame: USBService ' Must service USB regularly USBOut 1, buffer, 3, endgame ' Send buffer to endpoint 1 Next loopcnt Next state Goto movecursor ' Do it forever
Descriptor code:
Code:' hid_desc.bas 'USBMEMORYADDRESS Con $400 ' USB RAM starts here (set in device header file) USBMEMORYSIZE Con 256 ' USB RAM size in bytes USBReservedMemory Var Byte[USBMEMORYSIZE] USBMEMORYADDRESS ' Reserve memory used by USB assembler code Goto hid_desc_end ' Skip over all of the USB assembler code Asm #define USB_EP0_BUFF_SIZE 8 ; 8, 16, 32, or 64 #define USB_MAX_NUM_INT 1 #define USB_MAX_EP_NUMBER 1 #define NUM_CONFIGURATIONS 1 #define NUM_INTERFACES 1 ;#define UCFG_VAL USB_PULLUP_ENABLE|USB_INTERNAL_TRANSCEIVER|USB_FULL_SPEED|USB_PING_PONG__NO_PING_PONG #define UCFG_VAL USB_PULLUP_ENABLE|USB_INTERNAL_TRANSCEIVER|USB_LOW_SPEED|USB_PING_PONG__NO_PING_PONG ;#define USE_SELF_POWER_SENSE_IO ;#define USE_USB_BUS_SENSE_IO #define USB_POLLING ; HID ; Endpoints Allocation #define HID_INTF_ID 0x00 #define HID_EP 1 #define HID_INT_OUT_EP_SIZE 3 #define HID_INT_IN_EP_SIZE 3 #define HID_NUM_OF_DSC 1 include "usb_hid.asm" ; Include rest of USB files, starting with HID class code ; ****************************************************************** ; This table is polled by the host immediately after USB Reset has been released. ; This table defines the maximum packet size EP0 can take. ; See section 9.6.1 of the Rev 1.0 USB specification. ; These fields are application DEPENDENT. Modify these to meet ; your specifications. ; ****************************************************************** DeviceDescriptor retlw (EndDeviceDescriptor-DeviceDescriptor)/2 ; Size of this descriptor in bytes retlw USB_DESCRIPTOR_DEVICE ; DEVICE descriptor type retlw 0x10 ; USB Spec Release Number in BCD format - 1.10 (low byte) retlw 0x01 ; (high byte) retlw 0x00 ; Class Code retlw 0x00 ; Subclass code retlw 0x00 ; Protocol code retlw USB_EP0_BUFF_SIZE ; Max packet size for EP0 retlw 0xD8 ; Vendor ID - 0x04D8 is Microchip Vendor ID (low byte) retlw 0x04 ; (high byte) retlw 0x00 ; Product ID: Mouse in a circle fw demo (low byte) retlw 0x00 ; (high byte) retlw 0x03 ; Device release number in BCD format (low byte) retlw 0x00 ; (high byte) retlw 0x01 ; Manufacturer string index retlw 0x02 ; Product string index retlw 0x00 ; Device serial number string index retlw NUM_CONFIGURATIONS ; Number of possible configurations EndDeviceDescriptor ; ****************************************************************** ; This table is retrieved by the host after the address has been set. ; This table defines the configurations available for the device. ; See section 9.6.2 of the Rev 1.0 USB specification (page 184). ; These fields are application DEPENDENT. ; Modify these to meet your specifications. ; ****************************************************************** ; Configuration pointer table USB_CD_Ptr Configs db low Config1, high Config1 db upper Config1, 0 ; Configuration Descriptor Config1 retlw (Interface1-Config1)/2 ; Size of this descriptor in bytes retlw USB_DESCRIPTOR_CONFIGURATION ; CONFIGURATION descriptor type Config1Len retlw low ((EndConfig1-Config1)/2) ; Total length of data for this cfg retlw high ((EndConfig1-Config1)/2) retlw NUM_INTERFACES ; Number of interfaces in this cfg retlw 0x01 ; Index value of this configuration retlw 0x00 ; Configuration string index retlw _DEFAULT|_SELF ; Attributes retlw 50 ; Max power consumption (2X mA) Interface1 retlw (HIDDescriptor1-Interface1)/2 ; Size of this descriptor in bytes retlw USB_DESCRIPTOR_INTERFACE ; INTERFACE descriptor type retlw 0x00 ; Interface Number retlw 0x00 ; Alternate Setting Number retlw 0x01 ; Number of endpoints in this intf retlw HID_INTF ; Class code retlw BOOT_INTF_SUBCLASS ; Subclass code retlw HID_PROTOCOL_MOUSE ; Protocol code retlw 0x00 ; Interface string index HIDDescriptor1 retlw (Endpoint1-HIDDescriptor1)/2 ; Size of this descriptor in bytes retlw DSC_HID ; HID descriptor type retlw 0x11 ; HID Spec Release Number in BCD format - 1.11 (low byte) retlw 0x01 ; (high byte) retlw 0x00 ; Country Code (0x00 for Not supported) retlw HID_NUM_OF_DSC ; Number of class descriptors retlw DSC_RPT ; Report descriptor type (HID) ReportDescriptor1Len retlw low ((EndReportDescriptor1-ReportDescriptor1)/2) retlw high ((EndReportDescriptor1-ReportDescriptor1)/2) Endpoint1 retlw (EndConfig1-Endpoint1)/2 ; Size of this descriptor in bytes retlw USB_DESCRIPTOR_ENDPOINT ; ENDPOINT descriptor type retlw HID_EP|_EP_IN ; Endpoint Address retlw _INT ; Attributes retlw low (HID_INT_IN_EP_SIZE) ; Size of the endpoint buffer in bytes (low byte) retlw high (HID_INT_IN_EP_SIZE) ; (high byte) retlw 0x0A ; Polling interval (10ms) EndConfig1 ReportDescriptor1 retlw 0x05 retlw 0x01 ; usage page (generic desktop) retlw 0x09 retlw 0x02 ; usage (mouse) retlw 0xA1 retlw 0x01 ; collection (application) retlw 0x09 retlw 0x01 ; usage (pointer) retlw 0xA1 retlw 0x00 ; collection (linked) retlw 0x05 retlw 0x09 ; usage page (buttons) retlw 0x19 retlw 0x01 ; usage minimum (1) retlw 0x29 retlw 0x03 ; usage maximum (3) retlw 0x15 retlw 0x00 ; logical minimum (0) retlw 0x25 retlw 0x01 ; logical maximum (1) retlw 0x95 retlw 0x03 ; report count (3) retlw 0x75 retlw 0x01 ; report size (1) retlw 0x81 retlw 0x02 ; input (3 button bits) retlw 0x95 retlw 0x01 ; report count (1) retlw 0x75 retlw 0x05 ; report size (5) retlw 0x81 retlw 0x01 ; input (constant 5 bit padding) retlw 0x05 retlw 0x01 ; usage page (generic desktop) retlw 0x09 retlw 0x30 ; usage (X) retlw 0x09 retlw 0x31 ; usage (Y) retlw 0x15 retlw 0x81 ; logical minimum (-127) retlw 0x25 retlw 0x7F ; logical maximum (127) retlw 0x75 retlw 0x08 ; report size (8) retlw 0x95 retlw 0x02 ; report count (2) retlw 0x81 retlw 0x06 ; input (2 position bytes X & Y) retlw 0xC0 ; end collection retlw 0xC0 ; end collection EndReportDescriptor1 ; String pointer table USB_SD_Ptr Strings db low String0, high String0 db upper String0, 0 db low String1, high String1 db upper String1, 0 db low String2, high String2 db upper String2, 0 ; Language code string descriptor String0 retlw (String1-String0)/2 ; Size of this descriptor in bytes retlw USB_DESCRIPTOR_STRING ; STRING descriptor type retlw 0x09 ; Language ID as defined by MS - 0x0409 (low byte) retlw 0x04 ; (high byte) ; Manufacturer string descriptor String1 retlw (String2-String1)/2 ; Size of this descriptor in bytes retlw USB_DESCRIPTOR_STRING ; STRING descriptor type retlw 'M' retlw 0x00 retlw 'i' retlw 0x00 retlw 'c' retlw 0x00 retlw 'r' retlw 0x00 retlw 'o' retlw 0x00 retlw 'c' retlw 0x00 retlw 'h' retlw 0x00 retlw 'i' retlw 0x00 retlw 'p' retlw 0x00 retlw ' ' retlw 0x00 retlw 'T' retlw 0x00 retlw 'e' retlw 0x00 retlw 'c' retlw 0x00 retlw 'h' retlw 0x00 retlw 'n' retlw 0x00 retlw 'o' retlw 0x00 retlw 'l' retlw 0x00 retlw 'o' retlw 0x00 retlw 'g' retlw 0x00 retlw 'y' retlw 0x00 retlw ' ' retlw 0x00 retlw 'I' retlw 0x00 retlw 'n' retlw 0x00 retlw 'c' retlw 0x00 retlw '.' retlw 0x00 ; Product string descriptor String2 retlw (EndStringDescriptors-String2)/2 ; Size of this descriptor in bytes retlw USB_DESCRIPTOR_STRING ; STRING descriptor type retlw 'M' retlw 0x00 retlw 'o' retlw 0x00 retlw 'u' retlw 0x00 retlw 's' retlw 0x00 retlw 'e' retlw 0x00 retlw ' ' retlw 0x00 retlw 'I' retlw 0x00 retlw 'n' retlw 0x00 retlw ' ' retlw 0x00 retlw 'a' retlw 0x00 retlw ' ' retlw 0x00 retlw 'C' retlw 0x00 retlw 'i' retlw 0x00 retlw 'r' retlw 0x00 retlw 'c' retlw 0x00 retlw 'l' retlw 0x00 retlw 'e' retlw 0x00 retlw ' ' retlw 0x00 retlw 'D' retlw 0x00 retlw 'e' retlw 0x00 retlw 'm' retlw 0x00 retlw 'o' retlw 0x00 EndStringDescriptors Endasm hid_desc_end ' End of skipped over USB assembler code
Any idea?
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