RE: Serial port question
> -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Mario Lobo > Sent: Wednesday, January 30, 2008 5:22 PM > To: Warren Block > Cc: [EMAIL PROTECTED] > Subject: Re: Serial port question > > > On Wednesday 30 January 2008 21:42:28 you wrote: > > On Wed, 30 Jan 2008, Mario Lobo wrote: > > > I am doing some experiments with the WL5460AP. I doesn't have a serial > > > connector but the RTL8186 does have a UART and the circuit > board has a 4 > > > pin connector (4-3.3V, 3-TXD, 2-RXD, 1-GND) to the UART. When you plugged in to this port, did you insert 1488 and 1489 line driver/line receiver chips? RS232 serial data is +12V ~ -12V and that UART output is undoubtedly TTL 5v+ signal level. Hopefully you didn't fry the port. Ted ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Serial port question
On Wednesday 30 January 2008 21:42:28 you wrote: > On Wed, 30 Jan 2008, Mario Lobo wrote: > > I am doing some experiments with the WL5460AP. I doesn't have a serial > > connector but the RTL8186 does have a UART and the circuit board has a 4 > > pin connector (4-3.3V, 3-TXD, 2-RXD, 1-GND) to the UART. The idea here is > > to rewrite its firmware. > > You may have to swap TXD and RXD (null-modem). I tried that. > > > For a better debuging (and possibly de-bricking), I need to access its > > console screen (which it DOES have). > > > > The (lots of) info I gathered says that the connection to the WL5460AP > > console should be at 38400, 8N1, no-flow ctl. > > > > I have set up a proper cable and a line in /etc/ttys like: > > ttyd0 "/usr/libexec/getty 3wire.38400" vt100 on secure > > I would set that back to default. /dev/cuad0 is the callout port. I'll try that. > > > Using kermit I type: > > > > SET CARRIER-WATCH OFF > > set duplex full > > set session-log binary > > set modem type none > > set line /dev/ttyd0 > > set speed 38400 > > set flow none > > set serial 8n1 > > set terminal echo local > > set terminal newline-mode on > > set terminal debug on > > connect > > > > but I get nothing back. > > Try again with /dev/cuad0. Again, you may have to reverse TXD and RXD > at one end of the cable. ok > > > Before I start digging for hardware errors, I want to check if my > > connection attempt is being done right and understand better what is > > going on. > > > > 1) how does this work? ttyd0 goes "through" cuad0 or does it simply > > "grabs it" and sets its speed to 38400. Originally, cuad0 is set to 9600. > > See sio(4). ttyd0 is a "callin" port, while cuad0 is a "callout" port. > > > 2) if it goes "through" cuad0, how do I set it to 38400, 8N1, no-flow > > ctl? > > You're telling kermit to set the speed and flow control. For this > application, you could probably use cu/tip also: > > cu -l /dev/cuad0 -s 38400 I tried that. It says "connected" and hangs. I have to open another console to kill -9 it > > > 3) is my ttys line correct? > > I don't think so. > > -Warren Block * Rapid City, South Dakota USA Warren, I found this discussion on the inet. Could you comment on it? http://fixunix.com/bsd/86444-serial-ports-control-peripherals-w-3-wire-interface-okay-5-x-isn-t-working-6-x.html Maybe my plans to access the serial port will have to wait. I know my cuad0 is ok because I can fax with an external Genius modem. Thanks for replying ! -- Mario Lobo http://www.mallavoodoo.com.br FreeBSD since version 2.2.8 [not Pro-Audio YET!!] (99,7% winedows FREE) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Serial port question
On Wed, 30 Jan 2008, Mario Lobo wrote: I am doing some experiments with the WL5460AP. I doesn't have a serial connector but the RTL8186 does have a UART and the circuit board has a 4 pin connector (4-3.3V, 3-TXD, 2-RXD, 1-GND) to the UART. The idea here is to rewrite its firmware. You may have to swap TXD and RXD (null-modem). For a better debuging (and possibly de-bricking), I need to access its console screen (which it DOES have). The (lots of) info I gathered says that the connection to the WL5460AP console should be at 38400, 8N1, no-flow ctl. I have set up a proper cable and a line in /etc/ttys like: ttyd0 "/usr/libexec/getty 3wire.38400" vt100on secure I would set that back to default. /dev/cuad0 is the callout port. Using kermit I type: SET CARRIER-WATCH OFF set duplex full set session-log binary set modem type none set line /dev/ttyd0 set speed 38400 set flow none set serial 8n1 set terminal echo local set terminal newline-mode on set terminal debug on connect but I get nothing back. Try again with /dev/cuad0. Again, you may have to reverse TXD and RXD at one end of the cable. Before I start digging for hardware errors, I want to check if my connection attempt is being done right and understand better what is going on. 1) how does this work? ttyd0 goes "through" cuad0 or does it simply "grabs it" and sets its speed to 38400. Originally, cuad0 is set to 9600. See sio(4). ttyd0 is a "callin" port, while cuad0 is a "callout" port. 2) if it goes "through" cuad0, how do I set it to 38400, 8N1, no-flow ctl? You're telling kermit to set the speed and flow control. For this application, you could probably use cu/tip also: cu -l /dev/cuad0 -s 38400 3) is my ttys line correct? I don't think so. -Warren Block * Rapid City, South Dakota USA ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Serial port question
Hi guys; I am doing some experiments with the WL5460AP. I doesn't have a serial connector but the RTL8186 does have a UART and the circuit board has a 4 pin connector (4-3.3V, 3-TXD, 2-RXD, 1-GND) to the UART. The idea here is to rewrite its firmware. For a better debuging (and possibly de-bricking), I need to access its console screen (which it DOES have). The (lots of) info I gathered says that the connection to the WL5460AP console should be at 38400, 8N1, no-flow ctl. I have set up a proper cable and a line in /etc/ttys like: ttyd0 "/usr/libexec/getty 3wire.38400" vt100 on secure Using kermit I type: SET CARRIER-WATCH OFF set duplex full set session-log binary set modem type none set line /dev/ttyd0 set speed 38400 set flow none set serial 8n1 set terminal echo local set terminal newline-mode on set terminal debug on connect but I get nothing back. Before I start digging for hardware errors, I want to check if my connection attempt is being done right and understand better what is going on. 1) how does this work? ttyd0 goes "through" cuad0 or does it simply "grabs it" and sets its speed to 38400. Originally, cuad0 is set to 9600. 2) if it goes "through" cuad0, how do I set it to 38400, 8N1, no-flow ctl? 3) is my ttys line correct? Thanks ! -- Mario Lobo http://www.mallavoodoo.com.br FreeBSD since version 2.2.8 [not Pro-Audio YET!!] (99,7% winedows FREE) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
