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Questions tagged [programming]

Questions about programming parts (FPGAs, Flash, etc.) Many software programming questions should be asked instead on Stack Overflow.

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What's The fundamental difference between interrupts and delay in embedded programming?

I'm new in embedded programming in C, just getting to understand coding. Is there a fundamental difference between an interrupt function and a delay function? I would greatly appreciate answers with ...
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1answer
4k views

How to erase PIC microcontroller?

Sorry for such "noobish" question but I've tried to help my son with learning PIC programming. I load some simple asm source into MPLAB and pressed "make and program device main project". IDE build ...
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3answers
5k views

What do I need to program an ATmega 168?

I use AVR Studio for my compilation and c/c++ code (not arduino).So far I have used a Atmega 2560 development board provided by Nex robotix. I have ISP programmers of the following sorts... AVRISP ...
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4answers
514 views

Arduino Vs DIY board

The arduino website goes into some of these questions, but not in great detail. So, what is the difference if one were to purchase an Arduino board or make one yourself? What benefits does buying ...
3
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3answers
817 views

Logic design for FPGAs using C

I am well aware about programming processors and microcontrollers in C. But can C code (not SystemC) be used for logic design for FPGAs? Are there any specific software tools for this purpose?
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2answers
310 views

Why are some IC's programmable in circuit, but others aren't?

Why are some IC's programmable while still connected in a system/circuit, but others aren't? What's the determining factor(s) for whether a chip can or cannot? This question stems from my research on ...
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1answer
1k views

Is programming Arduino a subject of CSE(computer science) at university?

If get admitted in "computer science and Engineering" department of any university, would there be any subject for programming Arduino? This Arduino also looks like a subject of "Mechanical ...
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1answer
2k views

Xilinx DSP48 Single Slice 18x18 Complex multiplier

I am writing a verilog code for 18x18 complex multiplier using DSP48 single slice implementation in Vertex 4. Here is my code ...
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1answer
2k views

Programming the 8051 serial

As you see in the figure, programming the 8051 through serial port DB9 connector should be a fairly easy task Connect the two pins of 8051 to max 232 and then to DB9 So the programming circuit of ...
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3answers
1k views

Why Hex code not Uploading in Proteus?

I am unable to upload hex code in proteus and get a pop up saying I did this :- Picked up a PIC16 MCU added up a HEX file of the code i created (It is a simple blink code, code is working fine) ...
2
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1answer
985 views

What exactly is a Flash emulator, and how does it work?

I read about a flash emulator. Can someone tell me what exactly a flash emulator is, and explain how it works? Is it synonymous with an in-circuit emulator?
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3answers
4k views

Better workflow in Atmel Studio 6 for building and transferring program

After having modified my code in Atmel Studio 6, I write the program to my MCU in the following steps: Click Build or F7 Click Device Programming or Ctrl+Shift+P Click Apply (to choose programmer+...
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1answer
145 views

Beginner resources device design/assembly [closed]

During the summer I would love to get into electrical engineering. As background, I'm a computer scientist and as such, I have a fairly decent grasp of basic circuit design and electricity, which ...
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2answers
9k views

Parallel port output in C++ on Win7 x64

First of all, I have searched the internet all day long, including here on stackexchange, and couldn't find a clear solution. Only ambiguous answers and dead links. Let's start with what I have: my ...
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2answers
3k views

Sending command using USART

I am new to this kind of communication. I am able to send command from PC to AT90USB1287 microcontroller as well as able to get response using USB communication. Now i have connected another ...
0
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1answer
3k views

Saving user input as an array and recalling it later

I am currently working with an Arduino Mega and a SainSmart LCD and I have gotten most of my project to work except for a problem I am currently having. On my LCD screen, I have various buttons, and ...
3
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2answers
2k views

ARM Power/Exponential Function

I'm trying to code an exponential function for use on a PWM signal. My question is, does anyone know how to do a power function on an ARM cortex-M (STM32F4 in this case, which has an FPU) ...
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3answers
5k views

How to program a BeagleBone board?

Until now I used Microchip PIC, to program this microprocessor there is MPLAB. I would like to make a step forward and learn about other microcontrollers. I found the BeagleBone Black quiet promising ...
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2answers
139 views

Can this RAM bypass be prevented by making the particular memory controller “not idle”?

AbsoluteƵERØ showed me that memory can be bypassed at the memory controller. https://security.stackexchange.com/questions/36592/can-linux-be-made-to-detect-foreign-connections-to-the-ram-bus by ...
3
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1answer
216 views

Figuring out the functions of PIC numbers in a data file

I'm using Bumblebee software to interface my Wisp648 PIC programmer. According to the list of supported files for the Wisp, I should be able to program a PIC16F1829. However, that chip isn't supported ...
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1answer
2k views

Store data in built-in Flash of PIC at runtime using C code

I am designing PIC16F877a based project that counts the number of people in a room and turn ON the relays in accordance with that number like if 5 persons in a room then One relay would be ON. I want ...
7
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6answers
13k views

Failed to get Device ID - PICkit 3 & PIC16F684-ICD & AC16205

Like it is already mentioned in the title I have question regarding this dev stack: MPLAB X IDE v1.80 PICkit 3 PIC16F684-ICD (datasheet) AC16205 There is image of how things are connected (I don't ...
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1answer
83 views

Storing info bytes in ATmega169PA that remain after reprogramming

Does anyone know if there is a way that I can store 2 bytes of data into an ATmega169PA that will survive re-programming of the device? I would like to store a unique ID into an ATmega169PA that will ...
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1answer
434 views

Best FPGA to work with [closed]

I want to work on DSP and artificial intelligence for my freshman project, I was thinking on make an FPGA based system, the problem is that I have little experience working with FPGA's; I already know ...
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2answers
1k views

STM32 program not executing

I am currently trying to make my own stm32 development board. i have stm32f100c4t6 microcontroller mounted on pcb. I am using Atollic True studio free edition. i had made small blink led program ...
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2answers
4k views

Is it possible to program an Arduino in other languages?

Is it possible to program an Arduino with other languages that aren't C/C++ based? What would be required to do so? I know that other IDE's are available, I'm curious about actual programming ...
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1answer
226 views

how we can get original data from S-record format file [closed]

I have a S-Record file how i can get original program from this file plz tell me EXAMPLE ...
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2answers
317 views

How to get data from S-record file [closed]

Please tell me something about the S-record file format and how we can get data from it. The first S1 record is comprised as follows: • S1 S-record type S1, indicating it is a data record to be ...
0
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4answers
471 views

How do I get started with PIC programming? [closed]

So I opened up a big bucket o' worms asking this question. Two of the answers mentioned that instead of using a 555, a PIC10F200 or PIC12F675 may do the trick. Now, I've been spoiled with Arduino's ...
6
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5answers
291 views

Programs resistant to hardware issues

I recall at one point reading about embedded development where the programmer took into account things like memory corruption and possibly other hardware issues. For example: If an instruction in ...
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1answer
2k views

Pointer Size using eeprom.h with ATmega328p in AVR-GCC

I am working on a project that randomly reads and writes large blocks of data from EEPROM, based on user input. I have used the EEPROM before, but I never really thought about this. In the operations ...
8
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3answers
16k views

How do I program a PIC12?

I have a PIC12F675 that I need to program. I'm using a Pickit 2 and the Pickit 2 software. Supposedly I should be able to program it using this circuit, but the Pickit 2 software is not detecting the ...
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2answers
2k views

Control multiple LEDs using an IC and PC/Linux thru USB

I've already tried to search this topic but all Google results said that this isn't possible. Is there any chance of controlling multiple LEDs using a PC/Linux, through USB? The diagram might look ...
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2answers
1k views

Programming a PIC with a PIC

I'm building a device with two PICs, a PIC18F46K22 and a PIC16F88. I have a buffer on the 18F46K22 which contains a program that I want to write to the program memory of the 16F88. I can't do this ...
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2answers
10k views

Using a computer, to turn on a light bulb on and off many times [closed]

I build my own pcs, like coding (a little bit) and into engineering. What I want to do is basically take my computer, hook it up to a circuit with a light bulb and then run a program that will switch ...
1
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1answer
105 views

How do I know what the right signal amplifier to use is in order to program a hall-effect sensor?

I am trying to look for a signal amplifier in order to program the sensitivity and offset of the A1362 Hall-Effect sensor. Doing a simple google search reveals: http://www.amazon.com/RDL-ST-VCA3-...
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1answer
2k views

Maximum clock frequency for multi-cycle vs pipeline

Suppose you have latencies: IF: 10 ns ID: 11 ns EX: 12 ns MEM: 13 ns WB: 14 ns What is the maximum possible clock frequency for a pipeline with this design? I ...
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2answers
1k views

How do I know if my hall-effect sensor is working correctly?

On pg. 18 Figure 5 of this data sheet you will see a pulse train required to program the sensitivity of the A1362 Hall-Effect sensor. I am using the following circuit: Using Figure 5 from the ...
0
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1answer
82 views

How do we OR two bits in ATxmega128?

I am working with ATxMega128 and programming it in C. I have two inputs coming from a sensor and I want to turn on an LED when I get output from either of the sensor. I can blink my LED if i get ...
2
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2answers
1k views

How can we alter a single pin of ATxMEGA128?

this might be a basic question but I did try searching for the answer before posting the question. So, I am trying to set one of the ports to output. I used ...
2
votes
1answer
886 views

Is it possible to program a hall-effect sensor with an Arduino?

On pg. 18 Figure 5 of this data sheet you will see a pulse train that allows for programming the sensitivity of the A1362 Hall-Effect sensor. So far I have tried to manually apply required voltage ...
4
votes
1answer
6k views

How to properly open and close files “inside” a member function? [closed]

I am using Arduino Uno and the Ethernet Shield with a 2GB SD Card. I have the following working code intended to be used to write data on the SD Card (note: the SD Library is properly initialized and ...
2
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1answer
61 views

Large range delay at medium frequency for MC

I have a program that varies the step time and duty cycle for a 6 step commutation sequence. It takes an 8-bit ADC result and stores it as the TMR0 value, when TMR0 overflows, the ISR selects the ...
2
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5answers
183 views

Micro-Controller Programmable Selection

I have searched a lot and I can't seem to find a micro-controller that I can program in C++. Can someone please help me find a micro-controller (besides Arduino) that I can program C++?
0
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1answer
415 views

Value of FNOSC in the configuration of my code

I am using PIC24FJ64GA002 and I have configured my setting for PIC as following. ...
2
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2answers
2k views

Problem on printing “Ethernet.localIP()” to Serial Monitor

I am using Arduino Uno and the Ethernet Shield. I have the following code: ...
4
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1answer
971 views

Can I use ICSP if components share MOSI/SCK pins?

I'm designing a circuit with an ATmega32U4 where I will need to burn a boot loader once installed on the PCB. I currently have 4x 74HC595 Shift registers, sharing the MOSI & SCK pins. Will I ...
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5answers
1k views

How to think while working with VHDL or Verilog

All of my experience belong to general purpose programming languages e.g; c/c++ etc where each instructions are executed one after the other but it seems in VHDL/Verilog, all the instructions are ...
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1answer
154 views

How to ANDed bitwise in assembler?

Say I have a variable set to 30. In binary, 30 = 11110. I'd like to test some bits and then perform an action. For example, if bit 4 is set AND bit 3 is set AND bit 2 is set AND bit 1 is set THEN ...
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1answer
1k views

Design of a system to measure the speed of a falling simulated raindrop

I would like to know if using an IR emitter and a photo-transistor would do the job. Here are the specs of the photo-transistor. Also I'm using the Arduino Uno board; any tips on how to program it ...