Hello, On Sun, May 18, 2008 at 11:25 AM, Raja Subramanian <[EMAIL PROTECTED]> wrote:
> Hi, > > I want to connect to serial ports, but my laptop has only USB ports > available. > Hence, I'm looking for a USB to serial converter that's reliable and linux > compatible. > Although USB2Serial is fine for most occasions, you have reason to be concerned if you are doing really low level work. A serial port is a very simple device. When you are transmitting characters out, there are no complex software/hardware layers involved. If the kernel state is unstable/unknown due to bugs in whatever modules you are programming, you can still read kernel OOPs messages and other important messages from other kernel low level sub-systems. When the kernel console device is as simple as a traditional PC serial port or equivalent, you are in the best position to read kernel error/warning messages. OTOH, when you are using USB2Serial conversion, low-level kernel messages have to traverse the complex USB stack. This may also trigger interrupts. Depending on the stability of the kernel(and the bugginess of your module), the message may or may not reach the host serial port. While the kernel offers support for many devices to be used as the kernel console, the simplest of devices are the best to use if you are into low-level programming. Regards, -- Shuveb Hussain B I N A R Y K A R M A Chennai, India. Phone : +91 44-64621656 Mobile: +91 98403-80386 http://www.binarykarma.com _______________________________________________ To unsubscribe, email [EMAIL PROTECTED] with "unsubscribe <password> <address>" in the subject or body of the message. http://www.ae.iitm.ac.in/mailman/listinfo/ilugc
