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pebbert9
Joined: 31 Dec 2010
Posts: 39
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| PIC18F14K50 internal EEPROM |
 Posted: Fri Apr 01, 2011 2:41 pm |
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I am trying to write to the internal EEPROM of the PIC18F14K50
I run the following code and it seems to read and write, but when I comment out the write operation and just do the read, it's not reading the data that was previously written.
Is there a fuse I'm missing?
| Code: | #include <18F14K50.h>
#fuses HS,NOWDT,NOLVP,MCLR,PUT,NODEBUG,BROWNOUT,NOWRTD,NOCPD
#use delay(crystal=12000000)
#use rs232(baud=9600, UART1, errors)
void main()
{
char value;
write_eeprom (1, '$');
value = read_eeprom (1);
printf("\r\nData: %c", value);
while (TRUE) {
}
} |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Fri Apr 01, 2011 2:46 pm |
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Your programming software is probably erasing the eeprom. Look in the
setup window for your programmer (i.e., MPLAB, etc.) and tell it to
preserve the eeprom. |
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pebbert9
Joined: 31 Dec 2010
Posts: 39
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| Posted: Fri Apr 01, 2011 3:05 pm |
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| Thank you, I had to disable it in CCSLOAD. |
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