Thank you Matt and Rob,
I have a non reliable USB communication under both Win10 and Win7 so I'm
suspecting everything...
The following sample is based on 18F4550_USB_serial.jal. PIC18F25K50 has
the same registers as PIC18F2550 except some PLL bits which can be ignored
with a delay.
However, USB works only with the echo. Trying to repeatedly send a byte
from PIC to PC, communication it froze.
include 18f25k50 -- target PICmicro
--
-- This program assumes that a 16 MHz resonator or crystal
-- is connected to pins OSC1 and OSC2.
pragma target clock 48_000_000 -- oscillator frequency
--
pragma target OSC HSH -- crystal or resonator
pragma target PLLSEL PLL3X
pragma target PLLEN ENABLED -- PLL on
pragma target CPUDIV P1 -- Fosc divisor
pragma target WDT DISABLED -- watchdog
pragma target XINST DISABLED -- do not use extended
instructionset
pragma target DEBUG DISABLED -- no debugging
pragma target BROWNOUT DISABLED -- no brownout reset
pragma target FCMEN DISABLED -- no clock monitoring
pragma target IESO DISABLED -- no int/ext osc switching
pragma target LVP DISABLED -- low voltage programming
pragma target MCLR EXTERNAL -- external reset
--
-- The configuration bit settings above are only a selection, sufficient
-- for this program. Other programs may need more or different settings.
--
OSCCON_SCS = 0 -- select primary oscillator
--
enable_digital_io() -- make all pins digital I/O
WDTCON_SWDTEN = OFF -- disable watchdog
include delay
include usb_serial
include print
-- constants
const byte str_welcome[] = "JALLIB USB Serial Demo app\n"
-- variables
-- interrupts? No thanks
INTCON_GIE = false
-- setup the USB serial library
usb_serial_init()
var bit has_shown_welcome_msg = true
var byte ch
-- main loop
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
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
end if
-- check for input character ; this works
if usb_serial_read( ch ) then
-- echo input character
usb_serial_data = ch
end if
; none of the following works, the USB is frozen...
; usb_cdc_putc ("B")
; format_word_dec(usb_serial_data, 0x3FC , 4, 0)
; print_byte_dec(usb_serial_data, 0x04)
On Wed, Feb 24, 2021 at 9:02 PM Matt Schinkel <[email protected]>
wrote:
> Hi, it is in jallib under tools/usb
>
> Sent from my Android device.
>
> ------------------------------
> *From:* [email protected] <[email protected]> on behalf of
> Rob CJ <[email protected]>
> *Sent:* Wednesday, February 24, 2021 1:41:57 PM
> *To:* [email protected] <[email protected]>
> *Subject:* Re: [jallib] WIN32CDCDrivers?
>
> Hi Vsurducan,
>
> I do not know but I think you do not need them. When I updated the serial
> library some time ago I could test it with a JAL sample program. Windows 10
> recognized the usb device without the need for driver.
>
> If you use an older version of Windows I do not know if this is also true.
>
> Kind regards,
>
> Rob
>
> ------------------------------
> *Van:* [email protected] <[email protected]> namens vsurducan
> <[email protected]>
> *Verzonden:* woensdag 24 februari 2021 19:17
> *Aan:* [email protected] <[email protected]>
> *Onderwerp:* [jallib] WIN32CDCDrivers?
>
> Hi, where can I find a copy of the Win32CDCDrivers.zip ?
> The links posted in the usb_serial_demo are broken.
> thanks,
>
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