View previous topic :: View next topic |
Author |
Message |
jim
Joined: 17 Dec 2007 Posts: 2 Location: AL
|
TMP275 temperature sensor |
Posted: Tue Dec 18, 2007 12:28 am |
|
|
I am using the TI TMP275 temperature sensor with a 16F876.
Has anyone use the '275? I can't seem to get the I2c interface to work. |
|
![](templates/subSilver/images/spacer.gif) |
PCM programmer
Joined: 06 Sep 2003 Posts: 21708
|
|
Posted: Tue Dec 18, 2007 1:55 am |
|
|
It's somewhat similar to the TCN75. The TMP275's configuration register
is formatted differently than the TCN75, and there are some other
differences, but at least in the basic power-on reset mode, it's mostly
compatible. Therefore, you can use this TCN75 driver to get you started:
http://www.ccsinfo.com/forum/viewtopic.php?t=19061&start=2
Comment out the line in main() that calls the TCN75_init() routine.
You don't need it for the initial testing. Remember to put pull-up
resistors on the SDA and SCL lines, and to connect the address
pins A0, A1, and A2 to ground on the TMP275. |
|
![](templates/subSilver/images/spacer.gif) |
jim
Joined: 17 Dec 2007 Posts: 2 Location: AL
|
|
Posted: Wed Dec 26, 2007 12:16 am |
|
|
Thanks. That did it, after I corrected an open solder joint. |
|
![](templates/subSilver/images/spacer.gif) |
|