TiVo Community Forums Archives - Direct register access to serial port ?

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Direct register access to serial port ?
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Posted by: mikedf

Is there any way to directly access the registers of the 16550 ACE being used?

It seems to me that the TI 16550 has an autoflow control function and I'm just curious if it is enabled or can be enabled. Also the chip has CTS/RTS pins, and I'm wondering if it would be possible to wire these up to a UART with the TX/RX signals to get a faster speed with flow control?

I've seen several topics on ioctl's but I don't know if they apply to the serial port. I've also looked through the serial.c file and at the end can see where the driver determines what device is being used (via some reg. accesses), but I'm not set up to hack a program and compile it to run, so I'm looking for the easy way out....

M

Posted by: Worf

Well, you can always hack up a program to access /dev/mem and map the registers into your program... of course, what happens when you pull the carpet out of the serial driver is anyone's guess :).

Posted by: kazymyr

You could probably get some pointers from the setserial program.