Re: Serial port error statistics - any comparable data?

2008-03-30 Thread Bjoern Schliessmann
Diez B. Roggisch wrote: if you have the chance, try attach a machine with legacy rs232 port, and see if the errors still remain. Additionally, what kind of buffers does your device have? I'm using pyserial to control a very sensitive device with nuttily implemented buffering strategy. It has

Re: Serial port error statistics - any comparable data?

2008-03-30 Thread Hendrik van Rooyen
Diez B. Roggisch wrote: RS232 is unfortunately as bad as a protocol as it can get. I've used it for communication with a microcontroller for just a few bytes every second. And it failed miserably, so I needed to implement a protocol on top of it. We normally do this anyway, except for stuff

Re: Serial port error statistics - any comparable data?

2008-03-30 Thread Hendrik van Rooyen
On Sunday 30 March 2008 12:19:58 Bjoern Schliessmann wrote: Diez B. Roggisch wrote: if you have the chance, try attach a machine with legacy rs232 port, and see if the errors still remain. Additionally, what kind of buffers does your device have? I'm using pyserial to control a very

Re: Serial port error statistics - any comparable data?

2008-03-30 Thread Dan Stromberg
On Sat, 29 Mar 2008 13:14:46 +0200, Hendrik van Rooyen wrote: Hi, I have been doing some tests on a device that we are thinking of incorporating into a product, and I have seen that reception on a serial port at 115200 baud over about six metres of RS-232 cable makes mistakes, to the order

Serial port error statistics - any comparable data?

2008-03-29 Thread Hendrik van Rooyen
Hi, I have been doing some tests on a device that we are thinking of incorporating into a product, and I have seen that reception on a serial port at 115200 baud over about six metres of RS-232 cable makes mistakes, to the order of 125 lines with errors in them out of approximately 18.4 million

Re: Serial port error statistics - any comparable data?

2008-03-29 Thread Diez B. Roggisch
Hendrik van Rooyen schrieb: Hi, I have been doing some tests on a device that we are thinking of incorporating into a product, and I have seen that reception on a serial port at 115200 baud over about six metres of RS-232 cable makes mistakes, to the order of 125 lines with errors in

Re: Serial port error statistics - any comparable data?

2008-03-29 Thread castironpi
On Mar 29, 4:26 pm, Diez B. Roggisch [EMAIL PROTECTED] wrote: Hendrik van Rooyen schrieb: Hi, I have been doing some tests on a device that we are thinking of incorporating into a product, and I have seen that reception on a serial port at 115200 baud over about six metres of