Questions tagged [assembly]

Question 1

I am developing a mixed c++ /asm project. In the asm I am using F_CPU to do some busy waiting as follows. However, by default, the F_CPU is defined with a trailing L (for long). The asm is not able to ...

Question 2

I've been trying this for days without success... I need to turn on a LED on portb when a button in portd is pushed. Cabling works, I've tested it with Arduino IDE and it works like a charm. This is ...

Question 3

It's the Arduino Uno. I've spent hours reading on the internet but found nothing yet. If you use a label in the macro, the 2nd time it's called you get a duplicate label error.

Question 4

I want to use all SRAM of an Arduino by writing the code in assembly. But does the bootloader use some SRAM while the program is running, and if the answer is yes would changing that data lead to ...

Question 5

I want to learn assembly, but would like to learn by doing, is it possible to learn and make something useful with arduino hardware? I dont know where or how to start something like this.

Question 6

I want to blink a led using assembly language and arduino I want the circuit to have a normal state of 5 hz blinking frequency Then use two push buttons to increase or decrease the blinking frequency ...

Question 7

I'm a newbie to arduino but been programming lots. I have a project where I would like to output 4 bits to adjacent pins and read 4 bits from another (4) adjacent pins. (Imagine a matrix keyboard ...

Question 8

As part of my application, I need to be able to update the code on my mega 2560 in the field with a download from the internet. I have found this code in the AT Mega 2560 data sheet ;-the routine ...

Question 9

I was trying to have some fun with avr-assembly on my arduino and I tried the following codes to blink my LED first I tried the ISR approach and when It didn't work I tried the CTC mode one, both ...

Question 10

Hey guys what I'm trying to do is to sum two arrays and return a new array; for example if given uint8_t a[] = {2, 4, 6}; uint8_t b[] = {1, 2, 3}; I should get { 3, 6, 9} What I'm trying to do is ...

Question 11

My professor wants me to implement a display to an old project prototype we had laying around on the lab. But he wants me NOT to use LiquidCrystal.h library or any other to achieve that. I read ...

Question 12

I'm trying to write some extremely fast code for the ESP8266, so I'm trying to figure out how to time things. I've discovered CCLOCK, a register that reflects the number of clock cycles since startup....

Question 13

Due to some curiosity, I was trying to use some assembly with my Arduino MEGA 2560. I am not able to invoke a function from a c++ function pointer array. When I uncomment the call function, func_a ...

Question 14

I was taking a look at the disassembly for a loop of mine that seemed to be taking too long and I found these assembly instructions that I don't understand. Why does it load 0 into r25 and then do two ...

Question 15

i have code in the Arduino ide for a temperature sensor that shows the temperature on three 7 segment displays, it shows the temperature to one decimal point. using an arduino uno. I am struggling to ...

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Questions tagged [assembly]

Removing the L from F_CPU in assembly

Arduino Uno R3 assembly code to push a button and turn on a LED

Arduino IDE. How do I use labels in a macro?

Does the bootloader use some SRAM?

Is it possible to use assembly with arduino?

Blinking a led using assembly language at different frequencies using two push buttons

Parallel I/O - maybe use Machine code function call

Loading code to a mega 2560

LED Blink in assembly with timer1 output compare interrupt not working

How to add two assembly arrays in arduino

How to use LCD display HD44780 with arduino without using any library

ESP8266 CCLOCK Odd behavior

Am not able to call C++ function pointers from inline assembly

Weird assembly output

how do i convert to assembly code (AVR assembly) from arduino

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