Opened 10 years ago
Closed 10 years ago
#11087 closed bug (fixed)
Characters on serial port are buffered with a buffer of size 8.
| Reported by: | pulkomandy | Owned by: | nobody |
|---|---|---|---|
| Priority: | normal | Milestone: | R1 |
| Component: | Drivers/TTY | Version: | R1/Development |
| Keywords: | Cc: | ||
| Blocked By: | Blocking: | ||
| Platform: | All |
Description
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.
Change History (3)
comment:1 by , 10 years ago
comment:2 by , 10 years ago
| Owner: | changed from to |
|---|---|
| Status: | new → assigned |
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Today I tested with a CDC device and this one works fine. So it seems the TTY layer and BDataIO stuff are working ok. The problem is either in the usb-serial driver or maybe in the recent changes to uhci.