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1. Remove the first LM75 chip from the bus, physically, so that only
the 2nd chip is present.

All of my tests have been conducted with a single LM75 which I just change pin A0 on. There have not ...

From looking at the spec. sheet it seems as though the base address(lowest) would be 0x90. You have assigned the variable, LM75_BASE_ADDRESS to a value of 72 which is HEX 0x48. The possible addresses ...

Made those changes; same results.

Thanks a lot for the help/pointers by the way. It is much appreciated.

Here's a sample program:

#include <16F877A.h>
#device ICD=TRUE
#device adc=8

#fuses HS,WDT,NOPROTECT,NOLVP,PUT //No Watch Dog Timer
#FUSES
#use delay(clock=20000000&# ...

You're assuming
that the expression of (Data & 1024) is automatically converted
to a boolean (0 or 1), and it's not

I thought in C 0 is false and anything >0 is true?

Edit: Oops - I s ...

That change didn't fix my problem.

Here are my constants:

#define LM75_BASE_ADDRESS 72
#define LM75_TEMP_REG 0
#define LM75_CONFIG_REG 1
#define LM75_HYSTERESIS_REG ...

Hello,

I'm trying to develop some code that will allow me to talk to multiple LM75 temperature sensors on an I2C bus. The problem I'm having though is my code will only communicate with an LM75 at ...

Addendum:

I noticed what was wrong. I needed to add the "signed" keyword infront of x's declaration. However what I find puzzling is how without this keyword the application would count negative nu ...

I'm having a problem with a particular for loop in one of my programs and I think it is a problem with the compiler. The for loop is supposed to count backwards from 4 to 0; however what ends up happe ...