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CHANGING ISR RETURN ADDRESS........
so I just want to return to a specific address when ISR ends and the only solution in my mind is software reset but it is even good to reset my controller again and again?...
Thu. Jul 12, 2018 - 06:58 AM
I2C KEYPAD PROBLEM
I am trying to make an i2c keypad by using atmega8 (master receive and slave transmit mode). here is the master code   #define F_CPU 1000000UL #include <avr/io.h> #...
Mon. Jul 9, 2018 - 01:55 AM
i2c keypad problem not getting ACK after STA+R
I am trying to make an i2c keypad by using atmega8 (master receive and slave transmit mode). here is the master code #define F_CPU 1000000UL #include <avr/io.h> #include...
Sun. Jul 8, 2018 - 08:13 PM
KEYPAD PORT CHANGE.
Can someone help me change the port of keypad 4x4? I want to shift lower nibble port D pins to port B lower nibble because I have to use serial communication and external...
Fri. Jul 6, 2018 - 10:21 AM
EEPROM ISSUE
I just started using internal EEPROM. I am trying to write "8051" on 0,1,2,3 location of EEPROM and then read it (turn off and then). so first I write on it by #include <avr/...
Thu. Jul 5, 2018 - 07:00 PM
CHECK SUM OF R305 (FINGERPRINT) PROBLEM
I am working on finger-print lock system project. in order to interface r305(fingerprint sensor), I have to send and receive commands serially. but I do not know how to calculate...
Wed. Jul 4, 2018 - 01:04 PM
USBASP FUSE-BITS SETTING PROBLEM
I am using AVR Burn-O-Mat to program Atmega8 via USBasp. I just changed my fuse-bits to attach external oscillator but I think that bits where wrong and now usbasp is unable to...
Sun. Jul 1, 2018 - 05:38 PM
USBASP NOT WORKING
I am getting an error while programming Atmega 8 by usbasp that is    avrdude.exe: warning: cannot set sck period. please check for usbasp firmware update. avrdude...
Fri. Jun 29, 2018 - 12:42 PM
UART HARDWARE CONNECTION PROBLEM
I am trying to serial communicate between Arduino and atmega8, in this code, I transmit 'a' from Arduino continuously and if I receive 'a' on atmega8 led will turn. I checked...
Wed. Jun 13, 2018 - 02:08 PM
INFINITE LOOP PROBLEM
I am trying to make a simple password lock system. I have checked keypad and LCD codes individually they work fine. but now in this code, I want to enter 4 digits so I...
Tue. Jun 12, 2018 - 11:40 AM
USART MULTIPLE BYTE TRANSMISSION PROBLEM
I was trying to send multiple bytes by atmega328p. I used *x != '\0' to stop transmission but the whole ARRAY IS NOT SEND. another thing if I replace *x != '\0' by i<15 (...
Fri. Jun 1, 2018 - 08:20 PM
USART TRANSMITION INTERRUPT PROBLEM
I have done the same thing without using interrupt it works fine. but now I have added interrupt and virtual terminal of Proteus is  showing nothing  C code <  #...
Thu. May 31, 2018 - 12:34 AM

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