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thank you for the code, but our RTC is functioning well also. it's just that when we insert some code for the motor operation, it made some delays in the RTC operation. will there be a way to limit the error? thank you :)
Hi! I am working on a project that is capable of moving a motor (in a time based manner) every after 30 minutes. The time will be based on an RTC in such a way that when I turn on the system, it looks at the time in the RTC to know which position the motor should be in and then after 30 minutes...
Hi,
We are currently working with PCF8583 RTC. we use PIC18F4520's I2C as the master, having SCL and SDA at RC3 and RC4 respectively. the problem is that how can we input the correct time in the RTC so that it will count from the time we want it to start counting?
thank you very much! :)
@zwi: your suggestion worked! it does resolve the same problem with ours. thank you very much!
@ard: yes we have done that. THANK YOU VERY MUCH! the circuit worked already!!! :) it seems that we just had connected a pull up for RC3 and RC4, instead of pull ups for all of the pins except that...
re: LCD problem
hi, thank you for the suggestion. we'll try it immediately. if that seems to work then i think the other problem might also work (probably). =)
re: I2C problem
(note:we transferred to PIC18F4520, it is basically the same with what we used before, PIC18F4455, the only...
yes. we've already done that. we also grounded the other pins of the RTC besides SCL and SDA, but still, it display the same output. we are not really sure of the connection in the breadboard, we assume that we can just connect the RTC pins directly to the equivalent pins in the microcontroller...
hi,
we are working on a project that uses PCF8583 RTC and soft I2C of PIC18F4455 to send data to SCL and SDA at port B1 and B0 respectively. we made use of portD for the LCD display of the date and time (since we are required to display those) and portB for the RTC. can you help us out in our...
thank you for the suggestion. we've tried it already, but it still does not work. i think we've done so many considerations already, so we opt to confirm first if the circuit itself is working. we first tried the working code for PIC16 and place it in the breadboard. upon trying so, it seems...
sorry but i didn't get it. what do you mean by "18F4455 has only pins 0,5, 6 and 7 on PORTD"? have reviewed the datasheet but port D has complete pins that can be reconfigured. thank you!
i have just tried having the LCD at portB along with the SCL and SDA. however, the wires are somewhat like...
hi, thank you for the reply :)
we've tried to assemble the connection in a breadboard instead of the EASYPIC5 dev board. the LCD is now placed in PORTD so as to give way for RTC in PORTB since PIC18F4455's SCL and SDA is in RB1 and RB0 respectively. however, doing so still does not display...
we're using the codes I have posted yesterday. :) sorry for the confusion. yes we've used this code with PIC16, but scl and sda is initially set at RC3 and RC4 respectively. we're using EasyPIC5 for testing if the code works. it does with the PIC16. we also tried soft I2C already with PIC18 but...
Hi all,
I am currently working on a project using PIC18F4455 and RTC PCF8583. PIC18F4455 is almost the same with PIC16F877A, it's just that 18 has a USB feature and has higher memory. So for confirmation purposes, I tried it first in PIC16. I was able to run it successfully using PIC16F877A...
Hi,
We're working on a project right now that needs the utilization of a Real Time Clock (RTC). However, in order for us to be able to use the RTC in our system that has a power window as motor (position dependent on the RTC), we were advised to use I2C. How do we utilize I2C in our code in...
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