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I use the Debug mode, when watch the
min = read_eeprom(0x01);

I got the error code ERROR #117:Improper use of a function identifier, the lED display the min=1, it should get 00.
Why ?

Your #int_rb function doesn't clear the mismatch condition that causes
the Interrupt-on-Change interrupt. To do this, you must read PortB
in the interrupt routine. Add the lines shown in bold belo ...

Post a small but complete test program that shows all the variable
declarations, and that compiles OK. Also post your compiler version.
my code is as follow:

#include <16f877a.h>
#f ...

write_eeprom(0x2100 + byte_address, value);

then to read:

read_eeprom(0x2100 + byte_address);

This is wrong. You do not add the hardware address of the data eeprom
to the basic address.
...

I'm surprised it runs at all:

#fuses XT,NOWDT,PUT,NOPROTECT
#use delay(CLOCK=14000000)

What is the maximum clock rate supported by XT?.

Best Wishes

I wrote it wrong, it should ...

hello guys

I use the internal eeprom for saving "min,sec"value ,it is a RTC project.
my code is as follow"

#include <16f877a.h>
#fuses XT,NOWDT,PUT,NOPROTECT
#use de ...

Seriously, use your eyes, brain, manual and examples:

This:

void interrupt ISR(void)
{
if (TMR0IF==1)
{
TMR0IF=0; //clear TMR1 overflow flag ...

#int_timer0
void timer0_int() //Um. It is an interrupt, not an initialisation
{
//Er. If the interrupt is called, then TMR0IF, will always be set
//The compiler automatical ...

I make a clock via segment display. The code was programed by PICC, but I want to translate to CCS code,there are some flag bit is used in PICC, but how to translating CCS code ? pls help me

about ...

Hello guys

I used the timer0 and timer1 as timer clock, but I use the PICC code. Now I need make it to CCS code, there are some questions when I translate the code.

1) how to open or close the ...

Hello guys
I used the rotary encode switch, but i never meet this device. i use the device in my project that adjust the PWM .
who can give me a support for this?

You may have damaged the chip !
Have you tried writing and reading known data to the RAM on the DS1302 ?

If that test works, then I suggest the RTC part of the chip is defective.

If it fails, t ...

I never heard of it in this application. It's not recommended by Maxim.
Use the specified crystal (32.768 KHz, 6 pf load).

I take out those capactors, it also doesn't work, the LCD display

44/ ...

Your schematic shows capacitors on the crystal. The ds1302 data sheet
says specifically not to do this:

OSCILLATOR CIRCUIT

The DS1302 uses an external 32.768kHz crystal. The oscillator circuit ...

pin1 Vc2-------5V, pin1 & pin2------Crystal

Here you claim to have pin 1 used for both Vcc2 and the crystal.
That's not correct.

What is your CCS compiler version ?

Sorry, I wrote wron ...