Roger,

 Thanks for your response.  But just to be clear, I'm not using Bosch
code at all, and I'm not having
 calculation problems.  My immediate issue is that I can't read the
Temperature / Pressure results
 registers in the BMP180.  I can read the EEPROM just fine and can read
the calibration coefficients\
 without any trouble.  I can also read the ID register without any
trouble.  Only when I start a
 temperature or pressure conversion, wait the appropriate amount of time
for the conversion to complete,
 I'm currently using 25ms to be sure, and then try to read the results
do I have a problem.  My code
 basically just hangs up. =20

 I'm going to keep plugging away and trying different things until I get
it working.  I have ordered a
 couple more sensors just in case there is something wrong with the one
I have.  I may be chasing an
 internal problem with the sensor, ie.. It might have gotten damaged
somehow.  I have had it for a while
 and it has been stashed in a cabinet for some time, so getting damaged
is not out of the question.


Regards,

Jim

> -------- Original Message --------
> Subject: Re: [PIC]: I2C Communications With A BMP180
> Temperature/Pressure/Altitude	Sensor
> From: Roger Morrell <r_morrell@yahoo.com>
> Date: Tue, March 20, 2018 12:29 pm
> To: "Microcontroller discussion list - Public." <piclist@mit.edu>
>=20
>=20
> I did some work around this a while back. From memory there was a problem=
 with some of the Bosch code as it used shifting to divide and this did not=
 work properly when doing negative numbers.=20
>=20
> I was using it to calculate altitude and=20
> Sent from my iPhone
>=20
> > On Mar 20, 2018, at 10:17 AM, Bob Blick <bobblick@outlook.com> wrote:
> >=20
> > Hi Jim,
> >=20
> > Were you able to find any examples on the web for PIC? If not, you coul=
d get the BMP180 library for Arduino and port it or just see what they are =
doing so you can fix your code.
> >=20
> > Bob
> > ________________________________________
> > From: piclist-bounces@mit.edu <piclist-bounces@mit.edu> on behalf of ji=
m@jpes.com <jim@jpes.com>
> > Sent: Tuesday, March 20, 2018 9:15 AM
> > To: piclist@mit.edu
> > Subject: [PIC]: I2C Communications With A BMP180 Temperature/Pressure/A=
ltitude  Sensor
> >=20
> >=20
> > All,
> >=20
> > Does anyone have any experience with this sensor?   I have tried
> > getting the temperature and pressure
> > conversions to work, but I'm having no luck so far.  I am using
> > MikroCPro for PIC compiler with the I2C
> > library. to write my program.  I can get the unit ID and the
> > calibration data from EEPROM.  But no matter
> > what I do, I cannot get the temperature or pressure values.
> > I've looked on the web for examples, and I'm believe I'm doing
> > everything correctly.  I was just
> > wondering if there is something that I'm missing.  If anyone has any
> > ideas, please let me know.
> >=20
> > Thanks all,
> >=20
> > Regards,
> >=20
> > Jim
> >=20
> >=20
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