Hi!
I have finally got round to making myself a IDC Serial header for debugging purposes.
http://www.maplin.co.uk/Module.aspx?ModuleNo=29968 <--- would it be ok to get a male to female converter for this adapter and will it still work ok with coreboot?
Cheer guys
Dave ------------- root@crankyadmin.net cranky@archlinux.us
David Houston wrote:
I have finally got round to making myself a IDC Serial header for debugging purposes.
Which board are you working with?
http://www.maplin.co.uk/Module.aspx?ModuleNo=29968 <--- would it be ok to get a male to female converter for this adapter and will it still work ok with coreboot?
You can connect that to a laptop or other modern PC without a serial port, in order to get a serial port which applications can use. You also need a cross-over serial cable, not just a gender changer.
However, that USB thing is only useful on the host system, where you do development, compiling, save logs, and so on. It is not useful on the target side. There you must have an onboard serial port.
//Peter
Which board are you working with?
Sun Workstation 20 Ultra M2, Board has a header (9 pin) which I have attached my IDC serial header to.
You can connect that to a laptop or other modern PC without a serial
port, in order to get a serial port which applications can use
However, that USB thing is only useful on the host system, where you
do development, compiling, save logs, and so on. It is not useful on
the target side. There you must have an onboard serial port.
My development board EVGA nforce 6 based board with no onboard serial. A cross-over serial cable, is that the same of different to a null modem cable.
Many thanks again
Dave ------------- root@crankyadmin.net cranky@archlinux.us
On Sat, Dec 5, 2009 at 10:54 PM, Peter Stuge peter@stuge.se wrote:
David Houston wrote:
I have finally got round to making myself a IDC Serial header for debugging purposes.
Which board are you working with?
http://www.maplin.co.uk/Module.aspx?ModuleNo=29968 <--- would it be ok to get a male to female converter for this adapter and will it still work ok with coreboot?
You can connect that to a laptop or other modern PC without a serial port, in order to get a serial port which applications can use. You also need a cross-over serial cable, not just a gender changer.
However, that USB thing is only useful on the host system, where you do development, compiling, save logs, and so on. It is not useful on the target side. There you must have an onboard serial port.
//Peter
-- coreboot mailing list: coreboot@coreboot.org http://www.coreboot.org/mailman/listinfo/coreboot
David Houston wrote:
Which board are you working with?
Sun Workstation 20 Ultra M2, Board has a header (9 pin) which I have attached my IDC serial header to.
Ok. That is an onboard serial port. By port I don't mean DB9 connector, but rather _any connector_. So you are good, if this is your target board. If this is your workstation board then the USB cable is of no use.
My development board EVGA nforce 6 based board with no onboard serial.
Then you lose. The target board must have a real serial port onboard.
You can also check if the chipset implements the EHCI Debug Port, in which case you could use a USB Debug Class Device to communicate with coreboot. This is a particular USB device, and it must be that one. A generic USB-serial converter does not work.
http://www.coreboot.org/EHCI_Debug_Port
A cross-over serial cable, is that the same of different to a null modem cable.
Yep!
//Peter
-
David Houston -
Peter Stuge