Easy HID Command -Response application

[Darrel Taylor]

Gremlins, or maybe the cats (if you have any).

Make sure you have plenty of capicitance on the VUSB pin. (.22uF to .47uF)
And have both a 10uF and 0.1uF capacitors on the Power Rails (VSS-VDD).

Plugged, RX_READY and TX_READY are just normal "Bits".

RX_READY indicates that data has been received. It should be cleared after use.

Main:
    IF RX_READY THEN        ; USB data has been rcvd
        RX_READY = 0        ; clear the Ready flag
        USBIN 1, Buffer, Cnt, Main
        LCDOUT $FE,1,STR Buffer
    ENDIF

TX_READY indicates that the device is plugged in and the SIE is ready to accept data to send.

    IF TX_READY THEN         ; USB is Ready to transmit
        TX_READY = 0         ; clear the Ready flag
        ADCIN 0, ADval
        ARRAYWRITE Buffer,[DEC4 ADval," "]
        USBOUT 1, Buffer, Cnt, TXfail
      TXfail:
    ENDIF
GOTO Main

[f_lez]

Thanks for that i'll have a play with them tonight, shame i am away form home for tomorrow as i know this will be on my mind all day, issue is having two incoming serial data streams, and an outgoing serial + the usb out....

Neither of the incoming streams seem to wait, so i have to write code that will be quick enough to read a command and react according ly before waiting for the next serial command or change of IO state, which would also require a serial out for status.... Oh and a RTC would be nice so i can say what time things happened.

Its all so simple when i explain it real life....

[Andre_Pretorius]

Hallo Darrel
a question i have used your code and it work 100% with a array of 8 values, if i would like to transfer more values do i need to edit your file as well as in the main program

[Darrel Taylor]

No, there's nothing in the USB_ASM_Service.pbp file to change.
But you'll need to edit the report size in the Descriptor file, and the arrays in your program.

If you were using DT_HID, you could do it all in your main program.

[Andre_Pretorius]

Mabe i mis understand something i have a file in my project called DESCUSBProject witch acording to me is the file i need to change but i i understand corectly it is already setted to use 64 bytes but as soon as i try to send more than 8 my device shows a conection but no data comes through below a part of the descriptor file

#define	EP0_BUFF_SIZE		64	; 8, 16, 32, or 64
#define	MAX_NUM_INT		1	; For tracking Alternate Setting
#define	MAX_EP_NUMBER		1	; UEP1
#define	NUM_CONFIGURATIONS	1
#define	NUM_INTERFACES		1

#define	MODE_PP			    _PPBM0
#define	UCFG_VAL		    _PUEN|_TRINT|_FS|MODE_PP	; Full-speed

; DEVICE CLASS USAGE
#define USB_USE_HID

; HID
; Endpoints Allocation
#define	HID_INTF_ID		  0x00
#define	HID_UEP			  UEP1
#define	HID_BD_OUT		  ep1Bo
#define	HID_INT_OUT_EP_SIZE	  64
#define	HID_BD_IN		  ep1Bi
#define	HID_INT_IN_EP_SIZE	  64
#define	HID_NUM_OF_DSC		  1

[Darrel Taylor]

Assuming it's a descriptor file from EasyHID, and you have PBP 2.50 or prior.

A little further down in the file you'll find a ReportDescriptor1.
Inside that, there's an *** INPUT REPORT *** and *** OUTPUT REPORT ***
And each of those has a ...

    ; report count (number of fields)
    retlw    0x95
    retlw    0x08

The 0x08 needs to be changed to match your array size.
Only 8, 16, 32 or 64 are valid.

hth,

[Andre_Pretorius]

Thank you i entered it in hex and everything works