Hi Jason,
I don't know what temperature range you want to sense. I have had
success using I-Button temperature sensors directly on a USB RS232
connector. With this set up you can have multiple sensors on one line as
each sensor has a unique address.
The software I used for this was from a book Linux Toys by Christopher
Negus and Chuck Wolber. ISBN: 0-7645-2508-5
Regards
ChrisG
On 11/09/2014 12:21 AM, Jason Ricles wrote:
Gotcha and yes that was the problem I was having, I could transmit but
would just get bounced but what I transmitted due to not being able to
set transmit mode. So I basically have to use
/drivers/serial/crisv10.c: serial driver used on the Cris ETRAX platform
/drivers/serial/atmel_serial.c: serial driver used on Atmel platforms
(AVR32 and AT91 included)
for my drivers. Sorry I am not a fully hardware guy so am a little
lost at some of this stuff, but I know the software is not working
since the hardware has no way to know how to interact through
software.
On Sat, Nov 8, 2014 at 5:16 PM, John R Pierce <pierce@xxxxxxxxxxxx> wrote:
On 11/8/2014 1:55 PM, Jason Ricles wrote:
I am not too sure, it is for work and we got a custom board. My co worker
who is more the hardware guy set it up. I did notice it is thin before 3.0
kernal. I saw in the 3.0 kernal they have more support. So we are
basically
up the creek without a paddle with the device and kernal 2.6. Would a
RS-485 to RS-232 converter possibly fix the problems?
the problem is, a 232-485 converter needs to be told when to be in transmit
vs recieve mode for a half duplex single pair circuit to function. as that
article says, this can be done by using the RS232 RTS signal to control the
RS485 line driver, but the linux driver has to know about this and support
it.
--
john r pierce 37N 122W
somewhere on the middle of the left coast
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