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OK, I got a pl2303-based converter and setDTR is working with it, so it looks like a driver issue, not a pyserial one. I would welcome any suggestions of course. I opened a bug with SiLabs but I'm not very optimistic about getting an answer that way.
2009-11-23 23:57:15 UTC by markrages
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I need 9 data bit, no parity and 1 stop bit. Any idea?
Thanks again.
2009-11-23 23:49:46 UTC by juanbre
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I have a SiLabs CP2102 serial to usb converter. I need to toggle the DTR pin.
I've installed the driver from SiLabs and the device shows up as "/dev/tty.SLAB_USBtoUART" and "/dev/cu.SLAB_USBtoUART". TX and RX pins work fine with pyserial.
I've attached my test script. The call returns successfully but the pin doesn't actually change. I've also tested /dev/cu* device with the same...
2009-11-23 23:35:03 UTC by markrages
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the operating systems do not support such a setting.
are you sure you need 9 data bits plus parity? if it were 8 data bits plus parity it would be no problem.
2009-11-23 23:19:25 UTC by cliechti
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So, I wouldn't normally put this in a bug tracker, but I don't see a support email group.
I am using pyserial very successfully in Windows. It works very well for my needs. I am running some experiments with a microcontroller and need to read 4 bytes and send 3 bytes once every 2 milli-seconds. No problem on Windows. It doesn't work well in Linux. I can't yet get the hard data to show...
2009-11-23 22:22:16 UTC by ryangt06
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PARITY_MARK is already working. Just I had to uninstall the previous pyserial version.
So, any idea to wok with 9 data bit? I have a serial interface card with support for 9-bit protocol (16C950 UART)
Comments are more than welcome. Thanks.
2009-11-23 16:18:17 UTC by juanbre
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Sorry, it's working now, Just I had to uninstall the previous pyserial version.
Thanks anyway.
2009-11-23 16:10:27 UTC by juanbre
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PARITY_MARK and PARITY_SPACE don't appear in serial.Serial
Thanks.
2009-11-23 12:27:58 UTC by juanbre
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Hi to all!
I was triying with serial.Serial.PARITY_MARK in Kubuntu 9.10 and it doesn't work.
Any idea to use serial communication with 9 bit data (No parity and 1 stot bit) ??
Thanks very much.
2009-11-23 12:15:51 UTC by juanbre
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"... It will be interesting to see if xon/xoff works with the eZ430-RF2500 USB emulator under Linux once I upgrade to Ubuntu 9.10 with kernel version 2.6.31, which is reported to directly support communication with the RF2500T UART through the emulator."
Just to close the loop in case somebody else stumbles on this info:
Kernel version 2.6.31 does indeed support direct communication with...
2009-11-17 20:51:49 UTC by jporubek
