Piclist Gurus,
I am trying to interface an MPX5100 absolute pressure sensor to a PIC via an
LTC1298 12 bit A/D, where I require an accuracy of +/-2ft between ref.
ground level and 1000 ft..
Using the CCS compiler (can't cope with asm!) and the example prog. and
header written for the LTC1298, I can't get a stable reading off the A/D.
I have seen various examples of this on the 'net, especially 'Barom.c'
(www.phanderson.com)which reads pressure and wind speed, but can't get this
to compile.
As an aside, I have tried voltage to frequency conversion, then measure
pulses as well, which also proved to be unstable.
I have no doubt that the problem is my maths/code, and not the hardware, as
a DVM on the measured output on all the schemes I have tried is solid.
Any help/pointers greatly appreciated - I need to sleep!
Andy Holdaway