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List:       haiku-bugs
Subject:    [haiku-bugs] [Haiku] #11087: Characters on serial port are buffered with a buffer of size 8.
From:       "pulkomandy" <trac () haiku-os ! org>
Date:       2014-07-30 18:19:00
Message-ID: 046.4ef603d3bbc6485c0f67a12e5fc093c3 () haiku-os ! org
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#11087: Characters on serial port are buffered with a buffer of size 8.
-------------------------+------------------------------
 Reporter:  pulkomandy   |        Owner:  bonefish
     Type:  bug          |       Status:  new
 Priority:  normal       |    Milestone:  R1
Component:  Drivers/TTY  |      Version:  R1/Development
 Keywords:               |   Blocked By:
 Blocking:               |  Has a Patch:  0
 Platform:  All          |
-------------------------+------------------------------
 I have a small test on a microcontroller. It just sends a single char to
 the USART every 1.4 seconds.

 This works fine in minicom on Linux. On Haiku, both with SerialConnect and
 Minicom, characters don't get displayed immediately, I have to wait for
 the microcontroller to send 8 of them before they are processed and read()
 on the serial port returns.

 I tried both a Silicon Labs and a Prolific usb serial converter. Both have
 the problem. I don't know if the problem is in the TTY layer or the common
 code in the USB driver.

--
Ticket URL: <https://dev.haiku-os.org/ticket/11087>
Haiku <https://dev.haiku-os.org>
Haiku - the operating system.

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