More info about TEMPer on main page.
My experiments with TEMPer in FreeBSD.
2010-01-02: on the freebsd-usb mailing list, Stefan Bethke told about the utility he wrote, which can be found here. Compiled with
cc -o temper Temper.c,
tingo@testhost-1$ ./temper -n 10 25.69 25.62 25.69 25.69 25.69 25.69 25.62 25.69 25.69 25.62 tingo@testhost-1$ ./temper -h temper: option requires an argument -- h usage: temper [-d device] [-h high] [-l low] [-n count] -d device USB serial port of the TEMPer -h high thermostat on temperature -l low thermostat off temperature -n count number of readings to take, <0 is infinite If the high temperature is below the low temperature, operation of the thermostat is reversed, and the output is turned on when the measured temperature is below the threshold.
2009-12-27: Tested with FreeBSD 8.0-stable, which have a working uchcom:
root@testhost-1# uname -a FreeBSD testhost-1.kg4.no 8.0-STABLE FreeBSD 8.0-STABLE #0: Sat Dec 12 23:49:41 CET 2009 firstname.lastname@example.org:/usr/obj/usr/src/sys/GENERIC amd64
kldload uchcom, and then plugged in the TEMPer. I got this in /var/log/messages:
Dec 27 23:07:43 testhost-1 kernel: ugen1.2: <vendor 0x4348> at usbus1 Dec 27 23:07:43 testhost-1 kernel: ucom0: <vendor 0x4348 USB-SER!, rev 1.10/2.50, addr 2> on usbus1 Dec 27 23:07:43 testhost-1 kernel: ucom0: CH340 detected
I changed the device from /dev/ttyUSB0 (Linux) to /dev/ttyU0 (FreeBSD) in TEMPer.c and compiled it with
gcc -lm -o TEMPer2 TEMPer2.c. Then I tested it:
root@testhost-1# ./TEMPer2 Init starting Init done ^Croot@testhost-1#
Hmm, not good. TEMPer3.c is a slighthly modified version:
root@testhost-1# ./TEMPer3 Init starting Init done 00:48:03 -1000.000000 C 00:48:03 -1000.000000 C 00:48:04 -1000.000000 C 00:48:04 -1000.000000 C 00:48:04 -1000.000000 C 00:48:04 -1000.000000 C 00:48:04 -1000.000000 C
2009-04-08: I got myself a TEMPer, an usb thermometer. More info here, and here. There is a FreeBSD driver for the serial chip: uchcom, but it is not in RELENG_7 yet. I got a version out of the attic (of the src repository), it compiled and loaded ok. But the program TEMPer.c (modified) didn't work. From /var/log/messages:
Apr 8 19:27:08 kg-work2 kernel: ucom0: <vendor 0x4348 USB-SER!, class 255/0, rev 1.10/2.50, addr 2> on uhub1 Apr 8 19:27:08 kg-work2 kernel: ucom0: CH340 detected