[PIC] Interfacing RTC, EEPROM, I2C, sensor, keypad to PIC18F4550

[rahulsiva]

Interfacing RTC,EEPROM,I2C,sensor,keypad to PIC18F4550

hi..
i needed to connect a Ext.EEPROM (24lc64) & RTC(DS1307) with i2c 2 wire SDA & SCK. keypad and 5 push button as to connect in controller ....to do perform of input a proximity sensor (i.e.square waveform) i need to calculate a RPM with stop timing and find maximum one pulse for one tour...
i needed store rpm in EEPROM...

 

[ankitvirdi4]

Re: Interfacing RTC,EEPROM,I2C,sensor,keypad to PIC18F4550

What do you want us to do?

Refer this tutorial as far as I2C communication is concerned.

**broken link removed**

Push buttons can be easily interfaced using a port pin of your microcontroller.

Refer this anyway: highered.mheducation.com/sites/dl/free/0072402415/55328/alc_ch07.pdf

Develop your own algorithm, we can help you with that. try to code yourself. Best Luck!

 

[milan.rajik]

Re: Interfacing RTC,EEPROM,I2C,sensor,keypad to PIC18F4550

Which Compiler are you using ? Do you know how to use external interrupts or T0CKI pin to count pulses. What is the max RPM ? Please provide your circuit in Proteus form or .png format. What Clock frequency are you using for PIC ?

 

[rahulsiva]

Re: Interfacing RTC,EEPROM,I2C,sensor,keypad to PIC18F4550

compiler HI-tech,mp lab v8.91....clock frequency 20MHZ . I need use ext.interrupt counting pulses...maximum RPM as to calculate by it own...

- - - Updated - - -

thank for response....i had made code for LCD,RTC,I2C,KEYPAD,separate...but....cause error & non working in combine those code in one source code....till now 4bit lcd,RTC(i2C) is connect ..keypad combine cause error...


compiler HI-TECH,MP Lab v8.91

 

[milan.rajik]

Re: Interfacing RTC,EEPROM,I2C,sensor,keypad to PIC18F4550

Please Zip and post the complete MPLAB project files. I will try to integrate all different codes.

 

[rahulsiva]

Re: Interfacing RTC,EEPROM,I2C,sensor,keypad to PIC18F4550

in project folder RTC,i2c,4bit lcd function working
now keypad to be interface

EEPROM as do program...View attachment project.rar

 

[rahulsiva]

Re: Interfacing RTC,EEPROM,I2C,sensor,keypad to PIC18F4550

i need to calculate the RPM....by proximity sensor..pls provided me clear step detail....program

 

[paulfjujo]

Re: Interfacing RTC,EEPROM,I2C,sensor,keypad to PIC18F4550

hello

have a look on this
it's handle a proximity sensor to calculate speed and kms for a bicycle
and also manage I2C for DS1307,24LC256, LCD 4x20

use of RB0 interrupt to count .. (because low frequency !)
:laugh: maxi is 1000Hz => 8293 Km/H who want to try it in real world ..
for higher frequency RA4 Timer0 input is better .. up to 20 MHZ !

 

[milan.rajik]

Re: Interfacing RTC,EEPROM,I2C,sensor,keypad to PIC18F4550

You can also check Hi-Tech C projects at https://saeedsolutions.blogspot.in/

 

[rahulsiva]

Re: Interfacing RTC,EEPROM,I2C,sensor,keypad to PIC18F4550

i need help in external EEPROM (24lc256) i have taken program of 64k eeprom can same program can be use in 256k program..in below.txt

looking forward u response..