All Questions
Tagged with avr programming
58
questions
0
votes
0
answers
99
views
Graphical LCD With Atmega64
I have ATMEGA64 and LCM240128, The wiring is as below:
And my code is ( I'm using codevision):
...
0
votes
1
answer
101
views
AVR programming, push button not working
I was trying to study AVR programming using an Arduino. I just wanted to blink some LEDs. At first I succeeded then I tried using a push button for it. It didn't work out. I tried using a switch ...
- 13
6
votes
7
answers
3k
views
Why is a register initialised through bitwise operations instead of a binary string?
I'm learning microcontrollers, and have picked AVRs to start with. In many AVR tutorials I find the registers are initialised by performing some bitwise operations on the assignment, for example ...
- 335
1
vote
1
answer
297
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Is the UPDI pin on AVR DA/AVR Tiny0/... 5V tolerant when VCC@3V3?
I've a project incorporating an AVR128DA28 which is used with 3V3 peripherals and should be programmed in circuit.
For this I built a jtag2updi (GitHub) adapter using an Arduino Nano.
Since ...
- 175
1
vote
3
answers
406
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How does one program for first time and reprogram microcontrollers that are mounted to a PCB?
Arduino Unos and Microchip Curiosity Nanos are for prototyping and easy and ready to program, but now I am struggling to find the resource material that would detail taking the chip off the breakout ...
user298907
0
votes
1
answer
1k
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Difficulty programming a custom Atmega32u4 board with a snap programmer using ISP
I've made a PCB which contains an Atmega32u4, and just finished soldering it up today. Now, I realised that I bought the wrong Atmega32u4 version - I bought the version which does not by default use ...
- 734
2
votes
1
answer
225
views
Unusually long programming times with ATmega328p
I'm programming an ATmega328p using avrdude, and with a program size of 3074B, I am experiencing approximately 13 seconds of programming time. This is painfully slow when developing with the ...
- 245
0
votes
1
answer
647
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How do I invoke pymcuprog?
I have successfully created an ATtiny406 binary using avr-gcc in Linux, and I can program it to the device via Atmel-ICE under Atmel Studio in Windows, and it ...
- 431
3
votes
2
answers
751
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Moving Data, Bss and heap memory to external SRAM Atmega2560
This is my first question here, sorry if I miss something.
I’m using an Atmega2560 as main processor for my project but I’m running out of ram so I have connected an external 64 KB (64 x 8) SRAM to it....
- 107
-3
votes
3
answers
673
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How to write own ISR handler [closed]
I am learning about AVR programming and I know we have to use avr/interrupt.h library to use interrupts. However, my main reason to learn AVR programming is to program without any library so I want to ...
0
votes
1
answer
48
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Attiny861 programming current
What current does it consume during serial programming? According to datasheet it’s about 6000uA at 3.3V. I have to power it from a 10mA ldo, but now I’m not sure that it will be enough.
To keep ...
1
vote
2
answers
227
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Changing delay duration in _delay_us() changes code size
I was programming an ATtiny13A when I accidentally noticed that when I change the delay time in _delay_us() my code size changes. Here's the sample code:
...
- 320
0
votes
0
answers
181
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AVR ATmega328 low fuse wrtiten and issue
I am using an Arduino Uno as the hardware programmer together with avrdude as the software programmer for flashing an Atmega328.
I have noticed PB0 was set to ...
- 1,061
0
votes
3
answers
159
views
Burning hex files into multiple micro-controllers at a time. [closed]
I am using attiny88 and the usbasp programmer. Right now I am burning 1 micro at a time. But it is a time-consuming process during the production.
Is there any way to burn multiple microcontrollers ...
- 111
1
vote
2
answers
307
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AVR bitwise operation: making a NOT with a microcontroller
I'm programming an ATtiny10, i have two spare pins, one of which is the external interrupt pin on PB2, and i want to write the inverse of that signal to PB1. I want to spare a component, since i have ...
- 1,642