Skip to main content

Questions tagged [hex]

hexadecimal or base-16 - a counting system in which each digit can take on one of 16 values, usually using the symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F. Often used in computer programming because each digit maps directly to a group of 4 binary digits (bits).

10 votes
1 answer
1k views

How can I understand hexadecimal columns as power of 16 in Jeff Duntemann's book?

I am studying this book: x64 Assembly Language Step-by-Step. Programming with Linux-Wiley (2024) JEFF DUNTEMANN If I understand correctly, 1 in hexadecimal is equal to 1 in decimal. However, the ...
F. Zer's user avatar
  • 203
-2 votes
1 answer
78 views

Why can't I divide the total number of bytes of a .BMP file by the color depth? [closed]

I have a .BMP file resize.bmp. The total number of bytes that encode pixels in this file is 320 bytes. The color depth in this file is 3 bytes. 0x176 total number of bytes including Header 0x140 ...
stm's user avatar
  • 89
0 votes
1 answer
98 views

How to write a lookup-table into an 28C64 parallel EEPROM?

Based on the program from this post 28C64 EEPROM Programming Using Arduino, I would like to write, using Arduino Mega, a lookup-table that contains one sinewave cycle, created in Excel. I would like ...
Jerzy Przezdziecki's user avatar
1 vote
1 answer
145 views

First time schematic for USB-C power detection

Hey all I am creating a PCB that allows me to detect when I plug in a tablet, laptop, etc. to my home made tablet organizer. It's difficult to see if it made a connection in the back since you place ...
StealthRT's user avatar
  • 797
0 votes
1 answer
293 views

What is the difference between a hex inverting buffer and hex inverting Schmitt trigger?

What is the difference between an hex inverting buffer (e.g. TC74HC4049AP) and hex inverting Schmitt trigger (e.g. 74HCT14N)? How can hysteresis be added to a CMOS hex inverting buffer to make it act ...
Ken90's user avatar
  • 176
0 votes
0 answers
425 views

Help needed with solving MIPS jump instruction encoding question

I am currently working on a project that involves understanding the encoding of MIPS assembly instructions and I am struggling with a question that I hope someone here can help me with. The question ...
Bryan C's user avatar
  • 17
2 votes
1 answer
67 views

Meaning of specific SPI transaction

I am working with someone else's code, and I have a question about several of the SPI transactions that are performed. The hardware configuration consists of a Raspberry Pi (master) and a motor driver ...
Anthony K.'s user avatar
1 vote
1 answer
4k views

How can I use CDC_TRANSMIT_FS() correctly?

I am trying to develop a sensor driver on the STM32F401CCU6. I have already worked out the sensor data acquisition on the STM. The problem I am facing is getting that over USB to my host system. ...
Harit's user avatar
  • 83
-7 votes
1 answer
1k views

RFID Conversion hexadecimal to decimal

How do I convert this hexadecimal code to decimal: 5A 95 62 80? And also this one: 67 64 07 68? I need this to use in an ...
Shawaiz Tahir's user avatar
0 votes
1 answer
792 views

Facing problem to download Hex file to STM32 using Command line

I managed to write a script for flashing hex file into STM microcontroller. ...
Nh K's user avatar
  • 31
0 votes
2 answers
2k views

How can I combine 4 separate bits into one 4 bit output?

Say I hypothetically have four switches 0-3. I want each switch to represent a bit in a four bit long number, switch 0 being the first bit and switch 3 being the last. The end goal is to be able to ...
Bob Jones's user avatar
1 vote
1 answer
897 views

Clone ATtiny13A flash memory using USB ASP programmer

I have a working device with flashed ATtiny13A inserted in DIL8 socket. I am guessing that the uC does not have a locking bit set (since I was able to read it [?]). That is all I know at this point. I ...
nexus.so's user avatar
2 votes
1 answer
223 views

Converting 21 inputs into 8 inputs for EEPROM address pins

I am just diving into the world of multiplexers, so my knowledge of them is not the greatest. I am trying to develop a circuit that can control 10 RGB LEDS (30 total LEDs) via 2 inputs per LED and one ...
Grogglebob's user avatar
1 vote
3 answers
310 views

Mathematical conversion of hex to decimal

I am stuck with a very trivial coding issue. Please refer the link below: Cordic Algorithm using Verilog By what mathematical rule hex 26dd2b6a is equal to 0.607252935008814?
sarika's user avatar
  • 21
0 votes
2 answers
218 views

What is a 44h command?

I am reading the datasheet of a devive and don't understand the format of the commands. They are talking about 44h and BEh commands. I assume the h just stands for hex. If so, I don't understand why ...
neolith's user avatar
  • 105

15 30 50 per page