C program does now work after migrating from PIC16F688 to PIC16F1825

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adilumer

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C Program does not work when ported from PIC16F688 to PIC16F1825
I've been working on a CCS C program which read temperature from DS18B20 device and displays it to the LCD using sprintf statement. While my program works like a charm on PIC16F688 but once I upgrade the chip to PIC16F1825 it seems to crash when reading the temperature from DS1820.

Code C - [expand]
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void DisplayLCD(void)
{
static char temp_str[20];
static float temperature;
temperature = ds1820_read();  <<-----This is where it seems to fail.
temperature = (temperature* 0.0625*9/5)+32; // Deg F;
sprintf(temp_str,"%2.1f",temperature);
lcdStr(temp_str,4);//Degree F
}

If I replace this statement with "temperature = -4.75;"
Then the LCD displays the temperature correctly. The DS1820 device is connected to PortA pin A2.
Any ideas or pointers would be very helpful, thankyou.
 

You didn't show the ds1820_read() code or told which library you are importing. Also no compiler info.

Don't expect a reasonable answer so far.
 

hello,

The DS1820 device is connected to PortA pin A2
Click to expand...

is A2 pin an logical input ? (not analog)
show hardware config and Bits config
 

To get a solution zip and post complete CCS PIC C project files so that it can be examined.
 

I overlooked the reference to CCS C.

It looks like the question has been answered at CCS forum: option register problem.
 

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