USBDemo, something to learn USB a little bit

[skimask]

I am using microsontroller PIC 18F2450.

The issue is: when trying to compile and assemble the source file USBDemo.PBP from Steeve I get the following error messages:

ERROR: Macro USBINIT? not found in macro file.
ERROR: Macro USBSERVICE? not found in macro file.
ERROR: Macro USBIN?CBBL not found in macro file.
ERROR: Macro USBOUT?CBBL not found in macro file.

I did make any change to the original files as posted on this forum.

Could any one be of help to me?

My file locations are as follows:
MPASM D:\Program Files\PBP\MPASM
PBP D:\Program Files\PBP

When loading the USBDemo.HEX file in my microcontroller (18F4450 and 18F2450) it works fine with the PC application from Steeve.

In advance many thanks for your help.

As far as I know, PBP doesn't support USB on the 2450/4450. Yes, those chips are USB chips. Yes, PBP does support those chips, just not using the USB, at the website doesn't specifically say it supports them that way. The only chips I see that PBP directly supports with USB are the PIC18F2455, 2550, 4455, and 4550, and the 16C745, 765.

[Momboz]

As far as I know, PBP doesn't support USB on the 2450/4450. Yes, those chips are USB chips. Yes, PBP does support those chips, just not using the USB, at the website doesn't specifically say it supports them that way. The only chips I see that PBP directly supports with USB are the PIC18F2455, 2550, 4455, and 4550, and the 16C745, 765.

Hi skimask.

First, many thanks for your help.

Second, I know from Melabs, that they support 2450/4450 in the USB modes.

My issue again is: I was not trying to use any other PIC, but 4550. I am not that far in the process. What I was trying to do is just to compile the USBDemo.PBP for the 4550 in my environment.

And this doesn't compile because of some missing macros.

Any suggestion?

Thx

[mister_e]

shouldn't be a problem IF ALL files i've provided are located in the same folder unless i miss something obvious.

[Josuetas]

Ok, so there are plenty USB host controllers, any to recommend? it would be great if it is NOT surface mountable,

Thanks

[Momboz]

shouldn't be a problem IF ALL files i've provided are located in the same folder unless i miss something obvious.

Many thanks Steeve

I have copied all the files in the folder where I have PBP 2.47 installed and I tried to compile again. The errors are the same.

I have been surprised by the way you did programm your application (the PIC configuration is written in assembler and is in your source code. Why not) and it's the only example that does recognize the USB interface when plugged in. The other examples from Melabs (UBMouse, UBSJadem and USBCDC) do not recognize when plugged in but they compile without errors.

I am not asking what is the best :-)

I will still investigate the issue and try to find out what's wrong with my configuration. I am very very patient and I have plenty of time to spend on the subject. This is just as a hobby. No boss is expecting any results from me in this case.

Thanks again for your help.

[Momboz]

shouldn't be a problem IF ALL files i've provided are located in the same folder unless i miss something obvious.

Dear Steve

I would like to give you feedback on 3 points:

1st, there is a typing error in your example USBDemo.pbp source file. Line 39 in your file should say "_FCMEM_OFF_1H" and not "_FCMEN_OFF_1H", i.e. the letter N should read M.

2nd, your example compile perfectly if it located in the USB18 folder (or if you copy the UBS18 folder files in yours).

3nd, you are redefining the PIC CONFIG register and this is also done in the so called INC file from Melabs for that PIC. This generates errors and the user has to choose where to configure these registers to avoid duplication of definition.

I take this opportunity to thank you very much for the example first and then for your kind help.

Bye

[mister_e]

1st, there is a typing error in your example USBDemo.pbp source file. Line 39 in your file should say "_FCMEM_OFF_1H" and not "_FCMEN_OFF_1H", i.e. the letter N should read M.

Yes and no, it have been discussed before, it's down to your MPASM version. The latest version use FCMEN, while older use FCMEM
http://www.picbasic.co.uk/forum/show...t=3251&page=30 Post 149 and +

3nd, you are redefining the PIC CONFIG register and this is also done in the so called INC file from Melabs for that PIC. This generates errors and the user has to choose where to configure these registers to avoid duplication of definition.

Yes, you are right, but it's usual to comment the default one. At least, i always do it. see bellow..
http://www.picbasic.co.uk/forum/showthread.php?t=543 Post 5 and +++

[mpardinho]

Mister E,
the code work,
but AN0 and AN1 not stable
leds not stable off....same time is on or off....+- 5 seconds...push-buttons is off
than push-button = on, led stable ......on...off

i use 18F4550
470 nf in Vusb / Vss
.1 uf ceramic in Vcc/Vss
4k7 in MCLR / Vcc
resonator 4mhz


* pardom for my english

[skimask]

Mister E,
the code work,
but AN0 and AN1 not stable
leds not stable off....same time is on or off....+- 5 seconds...push-buttons is off
than push-button = on, led stable ......on...off

i use 18F4550
470 nf in Vusb / Vss
.1 uf ceramic in Vcc/Vss
4k7 in MCLR / Vcc
resonator 4mhz


* pardom for my english

You unstable just like the other post in the Communications->USB section?

[Noise.be]

i use 18F4550
470 nf in Vusb / Vss
.1 uf ceramic in Vcc/Vss
4k7 in MCLR / Vcc
resonator 4mhz

I've used
220nF Vusb / Vss
.1 uF ceramic too
10k MCLR/Vcc
USB B type Connector
and it works fine now ;-)