Thanks Mark- as soon as I read your reply the answer hit me- all I need to do is break out
dtr & rts from the usb to serial adapter I am already using- I must be getting slow in my
old age!
I can put a small hole in the t'bolts lid to bring out a couple of wires from the db9 to a
small driver board- too easy.
On 2018-11-09 17:13, Mark Sims wrote:
Lady Heather uses the DTR and RTS modem control signals to control the fan. If
you are using a USB-Serial converter the code should work as-is. Heather does
not have any code specific to a particular type of hardware (such as the PI).
If you are using the PI GPIO serial port, you would need to modify the program
to manipulate some GPIO pins. This is probably best done in the functions
SetDtrLine() and SetRtsLIne() in the heather.cpp file... there are Windows and
Linux versions of these routines.
The functions apply_heat() and apply_cool() and hold_temp() in heathmsc.cpp
could also be modified. There is also some code to use a parallel port to
control the fan, but that is rather Windows/DOS specific. It could be modified
for Linux.
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--
Cheers, Ken
[email protected]
'It seems hard to sneak a look at God's cards. But that He plays dice and uses
"telepathic" methods .... is something that I cannot believe for a single
moment.' (Einstein's famous quote on Quantum theory)
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