i have successfully built the PIC18F USB device and it work just well, but now i want to use the same concept of using vb in creating the interface in order to control 2 motors, but before i can do that, i have to understand the code behind it.

I need to know which code in VB that sends the data to the uC in order for the uC to execute the command. Does it work like this, the VB send a string command, then the uC interpret the string to appropriate function in the uC source file?. but which code in the vb.

here is the project that i referred to.
http://www.waitingforfriday.com/index.php/Building_a_PIC18F_USB_device

Hello.

I'm a begginner in this world of pic's programming...

I do a little IO Board with Pic18F2550... this:

h--p://electronics-diy.com/USB_IO_Board.php

Now i need the Hex file for pic but i can't find... I search in google and i found this wonderfoul site. With many information.

I like to ask if i can use this files http://www.waitingforfriday.com/index.p ... USB_device for my pic???

regards
joshuac

Hi

The projects on this site will work with your board as long as it is fitted with a PIC18F2550.

You will (of course) need to add in any other components (like LEDs and switches) as required.

To get the hex file first download the source code for the project. Then you will need the appropriate microchip compiler and MPLAB. This can all be downloaded for free from microchip's website. Once you have this you can build the source into a hex file and load it on your PIC.

/Simon

If you do a search for 0x80 in the VB source file you will come across the basic commands.

Hello

Thanks for yours support. For me is important.

I try to build the project in MpLab but i have one error. see log:

----------------------------------------------------------------------
Debug build of project `C:\WFF_Generic_HID_Demo_3_firmware\WFF Generic HID Demo 3\WFF_GenericHID_Demo_3.mcp' started.
Language tool versions: MPASMWIN.exe v5.45, mplink.exe v4.43, mplib.exe v4.43
Preprocessor symbol `__DEBUG' is defined.
Wed May 16 09:54:40 2012
----------------------------------------------------------------------
Make: The target "C:\WFF_Generic_HID_Demo_3_firmware\WFF Generic HID Demo 3\main.o" is out of date.
Executing: "C:\Program Files (x86)\MCC18\bin\mcc18.exe" -p=18F4550 /i"..\Microchip Solutions v2011-07-14\Microchip\Include" "main.c" -fo="main.o" -D__DEBUG -mL -Ou- -Ot- -Ob- -Op- -Or- -Od- -Opa-
C:\WFF_Generic_HID_Demo_3_firmware\WFF Generic HID Demo 3\main.c:30:Error [1027] unable to locate 'string.h'
C:\WFF_Generic_HID_Demo_3_firmware\WFF Generic HID Demo 3\debug.h:30:Error [1027] unable to locate './USB/usb.h'
C:\WFF_Generic_HID_Demo_3_firmware\WFF Generic HID Demo 3\debug.h:31:Error [1027] unable to locate './USB/usb_function_hid.h'
C:\WFF_Generic_HID_Demo_3_firmware\WFF Generic HID Demo 3\main.c:42:Error [1027] unable to locate './USB/usb.h'
C:\WFF_Generic_HID_Demo_3_firmware\WFF Generic HID Demo 3\main.c:43:Error [1027] unable to locate './USB/usb_function_hid.h'
Halting build on first failure as requested.
----------------------------------------------------------------------
Debug build of project `C:\WFF_Generic_HID_Demo_3_firmware\WFF Generic HID Demo 3\WFF_GenericHID_Demo_3.mcp' failed.
Language tool versions: MPASMWIN.exe v5.45, mplink.exe v4.43, mplib.exe v4.43
Preprocessor symbol `__DEBUG' is defined.
Wed May 16 09:54:40 2012
----------------------------------------------------------------------
BUILD FAILED

can help?? i read error 1027 and say:

EM-3 Compiler error: “Error [1027] unable to locate ‘p18cxxx.h’”

regards
joshuac

Hi

Did you follow the instructions correctly and install the Microchip Application Library as instructed?

http://www.waitingforfriday.com/index.p ... ource_code

Make sure you have followed this (especially the part marked 'Note').

/Simon

ok i try to explain what i do.

a Create a folder in C:\ with the name: Pedro

Then i install the microchip-application-libraries-v2011-07-14-windows-installer in this folder. (c:\Pedro\)

Unzip the WFF_Generic_HID_Demo_3_firmware to this folder.

Then i have a folder Pedro with sub-folders:
- Microchip Solutions v2011-07-14
- WFF_Generic_HID_Demo_3_firmware

Go to folder WFF_Generic_HID_Demo_3_firmware open subfolder WFF Generic HID Demo 3 and open WFF_GenericHID_Demo_3.mcp with mplab.

Next go to Project - Build options - Project
Tab Directories select include Search Path - New and select the folder C:\Pedro\Microchip Solutions v2011-07-14\Microchip\Include - OK

now if i do Build ALL i have this:

----------------------------------------------------------------------
Debug build of project `C:\Pedro\WFF_Generic_HID_Demo_3_firmware\WFF Generic HID Demo 3\WFF_GenericHID_Demo_3.mcp' started.
Language tool versions: MPASMWIN.exe v5.45, mplink.exe v4.43, mplib.exe v4.43
Preprocessor symbol `__DEBUG' is defined.
Wed May 16 10:38:13 2012
----------------------------------------------------------------------
Clean: Deleting intermediary and output files.
Clean: Done.
Executing: "C:\Program Files (x86)\MCC18\bin\mcc18.exe" -p=18F4550 /i"C:\Pedro\Microchip Solutions v2011-07-14\Microchip\Include" "main.c" -fo="main.o" -D__DEBUG -mL -Ou- -Ot- -Ob- -Op- -Or- -Od- -Opa-
C:\Pedro\WFF_Generic_HID_Demo_3_firmware\WFF Generic HID Demo 3\main.c:30:Error [1027] unable to locate 'string.h'
C:\Pedro\Microchip Solutions v2011-07-14\Microchip\Include\GenericTypeDefs.h:63:Error [1027] unable to locate 'stddef.h'
C:\Pedro\Microchip Solutions v2011-07-14\Microchip\Include\Compiler.h:62:Error [1027] unable to locate 'p18cxxx.h'
C:\Pedro\Microchip Solutions v2011-07-14\Microchip\Include\Compiler.h:116:Error [1027] unable to locate 'stdio.h'
C:\Pedro\Microchip Solutions v2011-07-14\Microchip\Include\Compiler.h:117:Error [1027] unable to locate 'stdlib.h'
C:\Pedro\Microchip Solutions v2011-07-14\Microchip\Include\Compiler.h:118:Error [1027] unable to locate 'string.h'
C:\Pedro\Microchip Solutions v2011-07-14\Microchip\Include\USB\usb_common.h:86:Error [1027] unable to locate 'limits.h'
Halting build on first failure as requested.
----------------------------------------------------------------------
Debug build of project `C:\Pedro\WFF_Generic_HID_Demo_3_firmware\WFF Generic HID Demo 3\WFF_GenericHID_Demo_3.mcp' failed.
Language tool versions: MPASMWIN.exe v5.45, mplink.exe v4.43, mplib.exe v4.43
Preprocessor symbol `__DEBUG' is defined.
Wed May 16 10:38:14 2012
----------------------------------------------------------------------
BUILD FAILED

I think i do all ok....

regards
joshuac

Hello Again

After search's and tests i think i found the solution

----------------------------------------------------------------------
Debug build of project `C:\Pedro\WFF Generic HID Demo 3\WFF_GenericHID_Demo_3.mcp' started.
Language tool versions: MPASMWIN.exe v5.45, mplink.exe v4.43, mplib.exe v4.43
Preprocessor symbol `__DEBUG' is defined.
Wed May 16 12:25:21 2012
----------------------------------------------------------------------
Make: The target "C:\Pedro\WFF Generic HID Demo 3\main.o" is out of date.
Executing: "C:\Program Files (x86)\MCC18\bin\mcc18.exe" -p=18F4550 /i"C:\Program Files (x86)\MCC18\h" -I"..\Microchip Solutions v2011-07-14\Microchip\Include" "main.c" -fo="main.o" -D__DEBUG -mL -Ou- -Ot- -Ob- -Op- -Or- -Od- -Opa-
Make: The target "C:\Pedro\WFF Generic HID Demo 3\usb_descriptors.o" is out of date.
Executing: "C:\Program Files (x86)\MCC18\bin\mcc18.exe" -p=18F4550 /i"C:\Program Files (x86)\MCC18\h" -I"..\Microchip Solutions v2011-07-14\Microchip\Include" "usb_descriptors.c" -fo="usb_descriptors.o" -D__DEBUG -mL -Ou- -Ot- -Ob- -Op- -Or- -Od- -Opa-
Make: The target "C:\Pedro\WFF Generic HID Demo 3\usb_device.o" is out of date.
Executing: "C:\Program Files (x86)\MCC18\bin\mcc18.exe" -p=18F4550 /i"C:\Program Files (x86)\MCC18\h" -I"..\Microchip Solutions v2011-07-14\Microchip\Include" "..\Microchip Solutions v2011-07-14\Microchip\USB\usb_device.c" -fo="usb_device.o" -D__DEBUG -mL -Ou- -Ot- -Ob- -Op- -Or- -Od- -Opa-
Make: The target "C:\Pedro\WFF Generic HID Demo 3\debug.o" is out of date.
Executing: "C:\Program Files (x86)\MCC18\bin\mcc18.exe" -p=18F4550 /i"C:\Program Files (x86)\MCC18\h" -I"..\Microchip Solutions v2011-07-14\Microchip\Include" "debug.c" -fo="debug.o" -D__DEBUG -mL -Ou- -Ot- -Ob- -Op- -Or- -Od- -Opa-
Make: The target "C:\Pedro\WFF Generic HID Demo 3\usb_function_hid.o" is out of date.
Executing: "C:\Program Files (x86)\MCC18\bin\mcc18.exe" -p=18F4550 /i"C:\Program Files (x86)\MCC18\h" -I"..\Microchip Solutions v2011-07-14\Microchip\Include" "..\Microchip Solutions v2011-07-14\Microchip\USB\HID Device Driver\usb_function_hid.c" -fo="usb_function_hid.o" -D__DEBUG -mL -Ou- -Ot- -Ob- -Op- -Or- -Od- -Opa-
Make: The target "C:\Pedro\WFF Generic HID Demo 3\WFF_GenericHID_Demo_3.cof" is out of date.
Executing: "C:\Program Files (x86)\Microchip\MPASM Suite\mplink.exe" /p18F4550 /l"C:\Program Files (x86)\MCC18\lib" "rm18f4550 - HID Bootload.lkr" "main.o" "usb_descriptors.o" "usb_device.o" "debug.o" "usb_function_hid.o" /u_CRUNTIME /u_DEBUG /z__MPLAB_BUILD=1 /z__MPLAB_DEBUG=1 /o"WFF_GenericHID_Demo_3.cof" /M"WFF_GenericHID_Demo_3.map" /W
MPLINK 4.43, Linker
Device Database Version 1.8
Copyright (c) 1998-2011 Microchip Technology Inc.
Errors : 0

MP2HEX 4.43, COFF to HEX File Converter
Copyright (c) 1998-2011 Microchip Technology Inc.
Errors : 0

Loaded C:\Pedro\WFF Generic HID Demo 3\WFF_GenericHID_Demo_3.cof.
----------------------------------------------------------------------
Debug build of project `C:\Pedro\WFF Generic HID Demo 3\WFF_GenericHID_Demo_3.mcp' succeeded.
Language tool versions: MPASMWIN.exe v5.45, mplink.exe v4.43, mplib.exe v4.43
Preprocessor symbol `__DEBUG' is defined.
Wed May 16 12:25:25 2012
----------------------------------------------------------------------
BUILD SUCCEEDED

It's ok???

regards
joshuac

Looks like a successful build

Program a PIC from it; you should at least get a working USB enumeration even if your test board has no other peripherals. You certainly can't do any damage by trying

Hello Simon

The pic works good with my io board, and i test your Demo Software and everything ok i can do Led On and Led Off.

Now i go to next step... i try to do other thing..... i try explain....

I like to use a analog sensor to read the distance between the sensor and one part (see attach demonstration).

I think my problem is the software.... but first i read some documents and do some tests. If someone have tips i listen

regards
joshuac