YupOriginally Posted by 4u2n
Theres plenty of I/O lines on the parallel port, it just a matter of adjusting the s/w such that it reads from this port instead.
Persuade frodo, he might do it
I think hes got a good point there.
Because the USB-SERIAL converter cost around $55 here in europe (UK) probably more in Denmark.
Very unlikely someone will be using the parallel port in the car...so why not have the option to use it?
The reason not to use the parallel port is that it's impossible to control the individual lines of the port from Windows NT/XP without installing a custom driver. Sure there are drivers out there that allow it but most of them also completely circumvent the the ability of the OS to protect itself from applications and applications from each other -- Never mind the security implications (which may matter to some carpc users with network connectivity).
It's still possible to do this using the native Windows printer driver interface to the parallel port but someone would need to hack out the details. For now, let's be happy that Frodo decided to take the first step. The USB/RS232 dongles can be had on ebay for around $10US. In any case, this thread is about a serial implementation of this capability. If someone wants to propose something else, start a new thread and provide some sample code. Perhaps Frodo (or one of the other front-end developers) will consider it for a future version.
As a side note, as part of the Radio project I'm working on with Seth, I already have code and a driver to control the individual lines of the parallel port working. That solution was really only designed for testing. The production implementation goal is still USB -- though a serial version may get implemented also (first).
Thats right use an option seriel or parallelOriginally Posted by Ricky327
In denmark standard hardware are price normal, buth when we got speciel hardware it cost
it's easy...if you don't want to use it while driving...don't
you guys are too funny, trying to over technify a simple process, but more power to you.
the flesh does not determine what is within.
carputer is in begining status
Not after you had an accident and was proven you had an illegaly installed device that may have caused the accident.Originally Posted by thasaint
Not that we cant switch off the movies while driving, its the law that we need to follow.
I agree but it was only a suggestion made by "4u2n" and I backed him up by asking questions in which you respond to. We all go out of topics now and again...infact it wasnt even off topicsOriginally Posted by rando
Good news for some thenOriginally Posted by rando
This thread is about a simple SERIAL based circuit that anyone can build, including Frodo, to support the (now implemented) lockout feature in FP. As I've already mentioned, there is no reason for FP to support multiple methods. If someone wants to use another signaling method, it's a simple matter to proxy that over to a virtual serial port.
Regarding the parallel port code (which is truly only appropriate for testing) my point was that it will be made available shortly. If I get a chance I might even tweek it to what you want (i.e. proxy a parallel port pin over to a virtual serial port). I wouldn't implement my system that way but if others want to, that's up to them.
@thasaint: The lockout mechanism is required for some of us to be compliant with the laws in our area.