Messages in this thread | | | Date | Fri, 22 Aug 2003 14:05:45 +0200 | From | Boszormenyi Zoltan <> | Subject | Re: How to use an USB<->serial adapter? |
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Hi,
here's the test programs output and I also set the module option debug=1 in pl2303.
The testprograms' sources are still in my first mail.
In one terminal I started the listener test, it shows that it received bytes on ttyS0, tried to write the answer:
$ ./serialtest2 /dev/ttyS0 read: 0x00, written: 0x01 read: 0x01, written: 0x02 read: 0x02, written: 0x03 read: 0x03, written: 0x04 read: 0x04, written: 0x05 read: 0x05, written: 0x06 read: 0x06, written: 0x07 read: 0x07, written: 0x08 read: 0x08, written: 0x09 read: 0x09, written: 0x0a read: 0x00, written: 0x01 read: 0x01, written: 0x02 read: 0x02, written: 0x03 read: 0x03, written: 0x04 read: 0x04, written: 0x05 read: 0x05, written: 0x06 read: 0x06, written: 0x07 read: 0x07, written: 0x08 read: 0x08, written: 0x09 read: 0x09, written: 0x0a
In another terminal, I started the initiator test twice:
$ ./serialtest1 /dev/usb/ttyUSB0 written: 0x00, read: 0x00 <- sometimes I get one zero byte written: 0x01, couldn't read written: 0x02, couldn't read written: 0x03, couldn't read written: 0x04, couldn't read written: 0x05, couldn't read written: 0x06, couldn't read written: 0x07, couldn't read written: 0x08, couldn't read written: 0x09, couldn't read $ ./serialtest1 /dev/usb/ttyUSB0 written: 0x00, couldn't read written: 0x01, couldn't read written: 0x02, couldn't read written: 0x03, couldn't read written: 0x04, couldn't read written: 0x05, couldn't read written: 0x06, couldn't read written: 0x07, couldn't read written: 0x08, couldn't read written: 0x09, couldn't read
During the session, the kernel log contains this:
usb.c: USB disconnect on device 00:04.2-2 address 3 pl2303.c: pl2303_shutdown usbserial.c: PL-2303 converter now disconnected from ttyUSB0 hub.c: new USB device 00:04.2-2, assigned address 4 usbserial.c: PL-2303 converter detected usbserial.c: PL-2303 converter now attached to ttyUSB0 (or usb/tts/0 for devfs) pl2303.c: pl2303_open - port 0 pl2303.c: 0xc0:0x1:0x8484:0x0 1 - 0 pl2303.c: 0x40:0x1:0x404:0x0 0 pl2303.c: 0xc0:0x1:0x8484:0x0 1 - 0 pl2303.c: 0xc0:0x1:0x8383:0x0 1 - 0 pl2303.c: 0xc0:0x1:0x8484:0x0 1 - 0 pl2303.c: 0x40:0x1:0x404:0x1 0 pl2303.c: 0xc0:0x1:0x8484:0x0 1 - 0 pl2303.c: 0xc0:0x1:0x8383:0x0 1 - 0 pl2303.c: 0x40:0x1:0x0:0x1 0 pl2303.c: 0x40:0x1:0x1:0xc0 0 pl2303.c: 0x40:0x1:0x2:0x4 0 pl2303.c: pl2303_set_termios - port 0, initialized = 0 pl2303.c: 0xa1:0x21:0:0 7 - 0 0 0 0 0 0 0 pl2303.c: 0x40:1:0:1 0 pl2303.c: pl2303_set_termios - data bits = 8 pl2303.c: pl2303_set_termios - baud = 9600 pl2303.c: pl2303_set_termios - stop bits = 1 pl2303.c: pl2303_set_termios - parity = none pl2303.c: 0x21:0x20:0:0 7 pl2303.c: set_control_lines - value = 3, retval = 0 pl2303.c: 0xa1:0x21:0:0 7 - 80 25 0 0 0 0 8 pl2303.c: pl2303_open - submitting read urb pl2303.c: pl2303_open - submitting interrupt urb pl2303.c: pl2303_ioctl (0) cmd = 0x5401 pl2303.c: pl2303_ioctl not supported = 0x5401 pl2303.c: pl2303_ioctl (0) cmd = 0x540b pl2303.c: pl2303_ioctl not supported = 0x540b pl2303.c: pl2303_ioctl (0) cmd = 0x5402 pl2303.c: pl2303_ioctl not supported = 0x5402 pl2303.c: pl2303_set_termios - port 0, initialized = 1 pl2303.c: pl2303_read_int_callback - length = 10, data = a1 20 00 00 00 00 02 00 83 00 pl2303.c: 0xa1:0x21:0:0 7 - 80 25 0 0 0 0 8 pl2303.c: 0x40:1:0:1 0 pl2303.c: pl2303_set_termios - data bits = 8 pl2303.c: pl2303_set_termios - baud = 115200 pl2303.c: pl2303_set_termios - stop bits = 1 pl2303.c: pl2303_set_termios - parity = none pl2303.c: 0x21:0x20:0:0 7 pl2303.c: set_control_lines - value = 3, retval = 0 pl2303.c: 0xa1:0x21:0:0 7 - 0 c2 1 0 0 0 8 pl2303.c: pl2303_ioctl (0) cmd = 0x5401 pl2303.c: pl2303_ioctl not supported = 0x5401 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 00 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_read_bulk_callback - port 0 pl2303.c: pl2303_read_bulk_callback - length = 1, data = 00 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 01 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 02 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 03 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 04 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 05 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 06 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 07 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 08 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 09 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_ioctl (0) cmd = 0x540b pl2303.c: pl2303_ioctl not supported = 0x540b pl2303.c: pl2303_ioctl (0) cmd = 0x5402 pl2303.c: pl2303_ioctl not supported = 0x5402 pl2303.c: pl2303_set_termios - port 0, initialized = 1 pl2303.c: 0xa1:0x21:0:0 7 - 0 c2 1 0 0 0 8 pl2303.c: 0x40:1:0:1 0 pl2303.c: pl2303_set_termios - data bits = 8 pl2303.c: pl2303_set_termios - baud = 9600 pl2303.c: pl2303_set_termios - stop bits = 1 pl2303.c: pl2303_set_termios - parity = none pl2303.c: 0x21:0x20:0:0 7 pl2303.c: set_control_lines - value = 3, retval = 0 pl2303.c: 0xa1:0x21:0:0 7 - 80 25 0 0 0 0 8 pl2303.c: pl2303_ioctl (0) cmd = 0x5401 pl2303.c: pl2303_ioctl not supported = 0x5401 pl2303.c: pl2303_close - port 0 pl2303.c: set_control_lines - value = 0, retval = 0 pl2303.c: pl2303_close - shutting down urbs pl2303.c: pl2303_close - usb_unlink_urb (write_urb) failed with reason: -19 pl2303.c: pl2303_read_bulk_callback - port 0 pl2303.c: pl2303_read_bulk_callback - urb->status = -2 pl2303.c: pl2303_read_bulk_callback - port is closed, exiting. pl2303.c: pl2303_open - port 0 pl2303.c: 0xc0:0x1:0x8484:0x0 1 - 0 pl2303.c: 0x40:0x1:0x404:0x0 0 pl2303.c: 0xc0:0x1:0x8484:0x0 1 - 0 pl2303.c: 0xc0:0x1:0x8383:0x0 1 - 0 pl2303.c: 0xc0:0x1:0x8484:0x0 1 - 0 pl2303.c: 0x40:0x1:0x404:0x1 0 pl2303.c: 0xc0:0x1:0x8484:0x0 1 - 0 pl2303.c: 0xc0:0x1:0x8383:0x0 1 - 0 pl2303.c: 0x40:0x1:0x0:0x1 0 pl2303.c: 0x40:0x1:0x1:0xc0 0 pl2303.c: 0x40:0x1:0x2:0x4 0 pl2303.c: pl2303_set_termios - port 0, initialized = 1 pl2303.c: 0xa1:0x21:0:0 7 - 80 25 0 0 0 0 8 pl2303.c: 0x40:1:0:1 0 pl2303.c: pl2303_set_termios - data bits = 8 pl2303.c: pl2303_set_termios - baud = 9600 pl2303.c: pl2303_set_termios - stop bits = 1 pl2303.c: pl2303_set_termios - parity = none pl2303.c: 0x21:0x20:0:0 7 pl2303.c: set_control_lines - value = 3, retval = 0 pl2303.c: 0xa1:0x21:0:0 7 - 80 25 0 0 0 0 8 pl2303.c: pl2303_open - submitting read urb pl2303.c: pl2303_open - submitting interrupt urb pl2303.c: pl2303_ioctl (0) cmd = 0x5401 pl2303.c: pl2303_ioctl not supported = 0x5401 pl2303.c: pl2303_ioctl (0) cmd = 0x540b pl2303.c: pl2303_ioctl not supported = 0x540b pl2303.c: pl2303_ioctl (0) cmd = 0x5402 pl2303.c: pl2303_ioctl not supported = 0x5402 pl2303.c: pl2303_set_termios - port 0, initialized = 1 pl2303.c: 0xa1:0x21:0:0 7 - 80 25 0 0 0 0 8 pl2303.c: 0x40:1:0:1 0 pl2303.c: pl2303_set_termios - data bits = 8 pl2303.c: pl2303_set_termios - baud = 115200 pl2303.c: pl2303_set_termios - stop bits = 1 pl2303.c: pl2303_set_termios - parity = none pl2303.c: 0x21:0x20:0:0 7 pl2303.c: set_control_lines - value = 3, retval = 0 pl2303.c: 0xa1:0x21:0:0 7 - 0 c2 1 0 0 0 8 pl2303.c: pl2303_ioctl (0) cmd = 0x5401 pl2303.c: pl2303_ioctl not supported = 0x5401 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 00 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 01 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 02 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 03 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 04 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 05 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 06 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 07 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 08 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_write - port 0, 1 bytes pl2303.c: pl2303_write - length = 1, data = 09 pl2303.c: pl2303_write_bulk_callback - port 0 pl2303.c: pl2303_ioctl (0) cmd = 0x540b pl2303.c: pl2303_ioctl not supported = 0x540b pl2303.c: pl2303_ioctl (0) cmd = 0x5402 pl2303.c: pl2303_ioctl not supported = 0x5402 pl2303.c: pl2303_set_termios - port 0, initialized = 1 pl2303.c: 0xa1:0x21:0:0 7 - 0 c2 1 0 0 0 8 pl2303.c: 0x40:1:0:1 0 pl2303.c: pl2303_set_termios - data bits = 8 pl2303.c: pl2303_set_termios - baud = 9600 pl2303.c: pl2303_set_termios - stop bits = 1 pl2303.c: pl2303_set_termios - parity = none pl2303.c: 0x21:0x20:0:0 7 pl2303.c: set_control_lines - value = 3, retval = 0 pl2303.c: 0xa1:0x21:0:0 7 - 80 25 0 0 0 0 8 pl2303.c: pl2303_ioctl (0) cmd = 0x5401 pl2303.c: pl2303_ioctl not supported = 0x5401 pl2303.c: pl2303_close - port 0 pl2303.c: set_control_lines - value = 0, retval = 0 pl2303.c: pl2303_close - shutting down urbs pl2303.c: pl2303_close - usb_unlink_urb (write_urb) failed with reason: -19 pl2303.c: pl2303_read_bulk_callback - port 0 pl2303.c: pl2303_read_bulk_callback - urb->status = -2 pl2303.c: pl2303_read_bulk_callback - port is closed, exiting.
I also tried some different baud rates (2400, 19200) besides the fastest 115200 that was default in the testprograms.
Now what?
Oh, did I mention that the pinout of the cable (that I use to loopback the USB<->serial cable into the same PC) is
DB9 <-> DB9 1,6 <-> 4 2 <-> 3 3 <-> 2 4 <-> 1,6 5 <-> 5 7 <-> 8 8 <-> 7
-- Best regards, Zoltán Böszörményi
--------------------- What did Hussein say about his knife? One in Bush worth two in the hand.
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