Adrian Adamson
Converts the output from a Texas Instruments LMT70 temperature sensor (in mV) to degrees C
Diff: convert_lmt70.cpp
- Revision:
- 0:2cbfc517b1c4
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/convert_lmt70.cpp Thu Oct 22 16:58:50 2015 +0000
@@ -0,0 +1,15 @@
+#include "convert_lmt70.h"
+
+/* Converts voltage output from Texas Instruments LMT70 temp sensor into degrees C
+ using the 3rd-order lookup table that's a best fit for the full range of -55C - 150C
+ found at http://www.ti.com/lit/ds/symlink/lmt70.pdf
+*/
+float convert_lmt70 (float mV) {
+ float a, b, c, d;
+ a = -1.064200E-09;
+ b = -5.759725E-06;
+ c = -1.789883E-01;
+ d = 2.048570E+02;
+
+ return a*mV*mV*mV + b* mV*mV + c*mV + d;
+}
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