• Serial Consoles

    From Rainer Dorsch@21:1/5 to All on Tue Dec 28 01:20:02 2021
    Hi,

    I am using a serial console to connect to a cubox-i. As terminal program I either use "screen -fn /dev/ttyUSB0 115200" or minicom. If I paste some text
    in the terminal, after about 30 characters the content gets lost.

    Is there a better way to run a serial console?

    Thanks
    Rainer

    --
    Rainer Dorsch
    http://bokomoko.de/

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?=@21:1/5 to All on Tue Dec 28 11:40:01 2021
    This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------------ZoF2qvqbIgzOTHyzdE33boAD
    Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: base64

    SGkgUmFpbmVyLA0KDQpPbiAxMi8yOC8yMSAwMToxNywgUmFpbmVyIERvcnNjaCB3cm90ZToN Cj4gSSBhbSB1c2luZyBhIHNlcmlhbCBjb25zb2xlIHRvIGNvbm5lY3QgdG8gYSBjdWJveC1p LiBBcyB0ZXJtaW5hbCBwcm9ncmFtIEkNCj4gZWl0aGVyIHVzZSAic2NyZWVuIC1mbiAvZGV2 L3R0eVVTQjAgMTE1MjAwIiBvciBtaW5pY29tLiBJZiBJIHBhc3RlIHNvbWUgdGV4dA0KPiBp biB0aGUgdGVybWluYWwsIGFmdGVyIGFib3V0IDMwIGNoYXJhY3RlcnMgdGhlIGNvbnRlbnQg Z2V0cyBsb3N0Lg0KDQpUaGUgcHJvYmxlbSBpcyBsaWtlbHkgdGhhdCB0aGUgY2hhcmFjdGVy cyBjb21lIGluIG1vcmUgcXVpY2tseSB0aGFuIHRoZSANCnNvZnQtIGFuZCBoYXJkd2FyZSBv biB0aGUgY3Vib3gtaSBjYW4gd29yayB0aHJvdWdoIHRoZW0uIE9uIGkuTVg2IHlvdSANCm1p Z2h0IGJlIGFibGUgdG8gdHVuZSB0aGUgd2F0ZXIgbWFyayBsZXZlbCBvZiB0aGUgRklGTyBz byBzb21ld2hhdCANCmxlc3NlbiB0aGUgcHJvYmxlbS4NCg0KVGhlIG1pY3JvY29tIGJ1aWx0 IGludG8gYnVzeWJveCBjYW4gZGVsYXkgc3VibWlzc2lvbiwgZS5nLg0KDQoJYnVzeWJveCBt aWNyb2NvbSAtZCAyMCAvZGV2L3R0eVVTQjANCg0KVGhlIG90aGVyIHByb2dyYW1zIHRvIGRy aXZlIGEgc2VyaWFsIGNvbnNvbGUsIGRvbid0IHN1cHBvcnQgdGhpcyBBRkFJSy4NCg0KQmVz dCByZWdhcmRzDQpVd2UNCg==

    --------------ZoF2qvqbIgzOTHyzdE33boAD--

    -----BEGIN PGP SIGNATURE-----

    iQEzBAEBCgAdFiEEfnIqFpAYrP8+dKQLwfwUeK3K7AkFAmHK6FgACgkQwfwUeK3K 7AkMOQf/UO6Q22ag9FosNdeK3Mh/CANzX3eAzT2kEkziem1H3HdrspKrlIwdNl/D +VUF3sVDW+zzEstvODHCi8No3bTZmaE3wpf/BLKgdt+Z8WLw5vs0jfOPB5zdaWq2 XGEJQ5dfuM5rAONmwU/uYa+FlQPvPRh1BpOoAfnuutfiGRKHo+jj/B2xi6srhbVu x5fenqPlOn2RaheqYZsKaGl8eo3BlJHdc5EqvlK7HX+9fCgDPXYZ3tT3i4F0o8j2 1dY3C2aNCSrr5kdobJEpTPKxFPbvkmZnb+fzWA77zuWgnxmURTdOoXl9xp14XQru N1RdT+V7QLDnwyG8zpaQikBqTxxsiw==
    =3sL4
    -----END PGP SIGNATURE-----

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Rainer Dorsch@21:1/5 to All on Tue Dec 28 13:40:03 2021
    Am Dienstag, 28. Dezember 2021, 11:35:03 CET schrieb Uwe Kleine-König:
    Hi Rainer,

    On 12/28/21 01:17, Rainer Dorsch wrote:

    I am using a serial console to connect to a cubox-i. As terminal program
    I
    either use "screen -fn /dev/ttyUSB0 115200" or minicom. If I paste some text
    in the terminal, after about 30 characters the content gets lost.

    The problem is likely that the characters come in more quickly than the soft- and hardware on the cubox-i can work through them. On i.MX6 you
    might be able to tune the water mark level of the FIFO so somewhat
    lessen the problem.

    The microcom built into busybox can delay submission, e.g.

    busybox microcom -d 20 /dev/ttyUSB0

    The other programs to drive a serial console, don't support this AFAIK.

    Thanks for the explanation and the microcom reference.

    Excellent advise that makes u-boot a lot easier :-)

    Thanks
    Rainer

    --
    Rainer Dorsch
    http://bokomoko.de/

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)