Simply check this code (I disabled by comment the code which check the
connection - if is working, then you can go further):
forever loop
-- poll the usb ISR function on a regular base, in order to
-- serve the USB requests
usb_serial_flush()
-- check if USB device has been configured by the HOST
--if ( usb_cdc_line_status() != 0x00 ) then
--portb = 0b_0000_0010
-- if !has_shown_welcome_msg then
-- has_shown_welcome_msg = true
-- print_string( usb_serial_data, str_welcome )
-- end if
--else
-- has_shown_welcome_msg = false
-- portb = 0b_1000_0000
--end if
-- check for input character
if usb_serial_read( ch ) then
portb = 0b_1111_0000
-- echo input character
usb_serial_data = ch
end if
end loop
Vasi
On Nov 20, 10:43 pm, phalox <[email protected]> wrote:
> Hey
>
> I'm running a >38°C fever here, so I didn't really have the chance to
> look into this problem further.
> But since you already posted a lot of reply's, I really had to post
> one too!
>
> This is a piece of the source code:
>
> forever loop
> -- poll the usb ISR function on a regular base, in order to
> -- serve the USB requests
> usb_serial_flush()
>
> -- check if USB device has been configured by the HOST
> if ( usb_cdc_line_status() != 0x00 ) then
> portb = 0b_0000_0010
> if !has_shown_welcome_msg then
> has_shown_welcome_msg = true
> print_string( usb_serial_data, str_welcome )
> end if
> else
> has_shown_welcome_msg = false
> portb = 0b_1000_0000
> end if
>
> -- check for input character
> if usb_serial_read( ch ) then
> portb = 0b_1111_0000
> -- echo input character
> usb_serial_data = ch
> end if
>
> end loop
>
> Which means that it isn't really stuck in a loop, but rather the
> serial is just not initialised. Taking out the first IF case won't
> change that I guess.
> I'm running under windows (tried both windows XP and windows 7) and it
> shows up nicely in device manager (com port, device name...)
>
> The 18F2553 is exactly the same as the 2550, only it has a slightly
> better ADC. (which makes it > 0.50$ more expensive!)
>
> I hope you can help me out, else I'm going to use and FTDI breakout
> board, but that's really not as elegant as everything on one board!
>
> Thanks
> Toon
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