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USB Infrared Toy / [Solved] Cannot properly close() device connection from tran
I've attached an updated version of the script showing the example transmit sequence for people that want to play some further with python and the IRToy.
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I've attached an updated version of the script showing the example transmit sequence for people that want to play some further with python and the IRToy.
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USB Infrared Toy / Re: Cannot properly close() device connection from transmit
I now made sure to send 2 bytes (0x11 0x11) before leave the transmit sub mode (0xFF 0xFF) and exiting irS mode (0x00) but the closing the serial interface problem still remains. I've tried sending 5 times 0x00 after exiting the transmit sub mode but it makes no difference.
My next step to is build the /Firmware-main/ from svn but I have not been able to successfully compile/link it yet using MPLABX.
Do you experience the same serial closing issue if you use my python sample script?
3
USB Infrared Toy / [Solved]Can't properly close() device conn from transmit
In the following scenario my device is completely inaccessible until I unplug and replug it:
- open serial connection to IR toy
- enter transmit mode (sending 's' followed by 0x03)
- close serial connection <- takes around 10-15 seconds?!
- open serial connection <- throws errors on win7 64-bit and ubuntu 32-bit
I get the following error messages when I try to re-open the device:
win7 error:
Quote
...omitted...
File "C:Python27libsite-packagesserialserialwin32.py", line 177, in _reconfigurePort
raise ValueError("Cannot configure port, some setting was wrong. Original message: %s" % ctypes.WinError())
ValueError: Cannot configure port, some setting was wrong. Original message: [Error 31] A device attached to the system is not functioning.
Linux:
Quote
File "/usr/lib/python2.6/dist-packages/serial/serialposix.py", line 175, in open
raise SerialException("could not open port %s: %s" % (self._port, msg))
serial.serialutil.SerialException: could not open port /dev/ttyACM1: [Errno 5] Input/output error: '/dev/ttyACM1'
Searching the forums all I found was this thread but it does not seem to apply to me as I can record fine.
My setup is as follows:
- IRToy v2
- Tried firmware V222 and V220
- win7 64-bit & ubunt-32 (both native)
Any ideas? Or maybe I should ask the following as I have a feeling that this might be causing the problem:
- What is the correct way of exiting transmit mode?
I tried following the "Example transmit sequence" described HERE. But it hangs on reading the transmit byte count. I attached the sample python code for reproducibility.
Searching a bit further I made a SVN checkout (revision 1952) of the code. In here I found the following snippet in Firmware-main/main.c:
Code: [Select]
case 's':Just assuming the comment on irsService() is true I tried a few combinations of sending 0x00 at arbitrary times in the transmit sequence before closing the connection but without luck. I had a very short look in IRs.c to see how the transmit mode works but quickly decided this might be going to far and somebody else might have ran into this problem before.
OutByte = getc_cdc(); // now ok to remove byte from the USB buffer
mode = IR_S;
irsService(); // Fully self contained, does not return until exited via 0x00 command.
Cheers,
Erik