All Questions
71
questions
0
votes
0
answers
24
views
AVR128Dx TCB Input Capture issue
Ive made a code for reading SENT sensor using TCB interrupt with event system. It works 90% of the time, but those 10% seems like it doesnt read correct high pulse duration, mby someone will see, what ...
- 51
0
votes
0
answers
29
views
Problems with OCR1B on Atmega328p
Trying to control 4 servos (SG90) using 4 pots on an arduino nano and the one connected to OC1B keeps having problems, with bits of jittering and it just not moving correctly (occasionally spinning), ...
- 3
1
vote
1
answer
846
views
Simulator of microcontroller runs so slow in Proteus
I am trying to implement a simple program with ATmega128, which display numbers from 0 to F. The problem is when I set the delay time at 500ms, the simulation runs slower, at around 8 seconds for each ...
- 75
2
votes
1
answer
375
views
What does LSB mean in PWM?
I have this PWM exam preparation question in Computer Engineering where it says "What is one V_LSB?". However we've discussed nothing about LSB in the PWM section.
What does it means?
- 35
0
votes
1
answer
279
views
Making duty cycle with CTC mode in AVR without using interrupt
I am writing a program to make an output with a 30% duty cycle and a frequency of 3 kHz using an ATmega32 microcontroller. My controller's frequency is 8 MHz and I am going to decrease it to 1 MHz by ...
- 73
0
votes
1
answer
299
views
Faster Timer0 overflow than 2 ms on Attiny85
I'm trying to get a Timer0 overflow with an overflow every 500us, but can't find a solution to get it so low.
I'm running the Attiny85 on its internal 1 MHz clock, so I know it is not gonna be the ...
- 309
0
votes
1
answer
222
views
Error Real Time Clock implementation AVR microcontroller
I want to create a real-time clock using ATmega328p microcontroller.
The microcontroller's frequency is 1 MHz. So, I think I should use timer interrupts in CTC mode to generate interrupt every second.
...
0
votes
0
answers
405
views
How to replace AVR _delay_ms() with timer
Good day.
I need problem with replacing _delay_ms() bultin function with timer.
MCU: Atmega644@16Mhz
My code (simplified):
...
- 161
2
votes
2
answers
527
views
How to store the last counting value in EEPROM in ATmega8 after power failure
I written a program to store the last counting value according to ATmega8 datasheet. but it didn't save the last value. The counter variable went to zero after power failure.
Please check the ...
- 21
2
votes
1
answer
1k
views
Configuring Atmega32 timer using the oscillator without prescaling gives wrong delay time
I am using AVR atmega32 microcontroller. The code below is supposed to toggle the LED connected to PORTD. The frequency of the oscillator connected to the ...
- 498
1
vote
0
answers
227
views
Atmega328p datasheet mistake "OCRA"
I was reading the atmega328p datasheet, and suddenly, i saw that a register is mentioned called "OCRA", on page 108 and page 160, which normally, should be register "OCR0A", which is widely mentioned ...
0
votes
1
answer
529
views
ATMega328P Timer Problem in Proteus
I have an ATMega328P microcontroller, and I'm learning how it is programmed. I wrote an example for Timer0 and uploaded it into the microcontroller. It works and a led blinks once a second in while.
...
- 21
1
vote
1
answer
3k
views
Generating 1 second with avr and timer 0 for Atmega32A
dears:
we have to Generate 1 second with atmega32A and mikrobasic software.
so I have configured timer 0 and avr with this way:
...
- 459
0
votes
1
answer
545
views
Output Compare Interrupt does not work avr atmega
Hey I'm trying to do blinking led using interrupts on 16 bit timer.
My atmega model is Atmega168A.
Chip clock rate is 12Mhz.
Here is my code:
...
- 139
0
votes
1
answer
436
views
LED blinking while loop not working AVR timer 0
It is strange and rare. I am trying to blink a LED at PD0 at 2hz, but it doesn't work. Seems to me that while loop doesn't work at all. I have triple checked the code. what is the problem here?
...
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