Microcontroller

Keeping time with the PCF8583 Real Time Clock and AVR

13 Feb 2012 by Mike Hankey

A Real Time Clock development board.

Beginning with the ST32F3DISCOVERY Microcontroller Board from STMicroelectronics

14 Oct 2021 by Richard Chambers

An introduction and a first walkthrough of using STM32CubeIDE with the ST32F3DISCOVERY board.

Using the Audio Jack as Data Interface on Android Systems

1 May 2015 by Intel

As one of the interfaces on mobile devices and tablets, the key function of the audio jack is to play music. However, its other usage cannot be ignored—the audio jack can also be used to transmit data.

Introduction to Simulate External Interrupts Using Atmel Studio for AVR

21 Jun 2016 by Dharmateja Challa

Tip on how to simulate external interrupts using Atmel Studio 7 for AVR Atmega MCUs

Arduino

AVR

Problem with receiving more than one character

8 Oct 2019 by Rick York

A few things are notable to me. 1: You do not initialize the value of recv. It probably should be set to 0 to be certain it enters your while loop at least once. 2: Your array buffer arr is of size 10 but you could potentially receive more than ten characters because the loop doesn't care how...

Spada via Modbus-micro SCADA for Arduino

28 Mar 2014 by jurhas

Spada via Modbs, Supervisory Control and Data Acquisition with visualb basic,Arduino and firebird

Getting Started With Arduino

9 Nov 2014 by charankumar516

Absolute Beginner's Guide to Arduino

Computer Engineering and the Hidden Neural network brain in the Arduino 101

21 Oct 2016 by marcus obrien

Computer engineering and the hidden neural network brain in the Arduino 101

artificial-intelligence

neural-network

machine-learning

Code for my final project

8 Oct 2012 by Richard MacCutchan

Fine, go and look for it, but do not expect anyone here to do your final project for you.

sensors

Noob question: what does this mean PORTD |= (1<<PORTD1); // drive PD1 high

19 Nov 2012 by Ed Nutting

Hi there,Same as my comment but as suggested, now posted as a solution (so that this stops showing as an "Unanswered question":"PORTD OrEquals 1 left shifted the number of times of the value of PORTD1" i.e. PORTD = PORTD | (1

How to read Binary Data from Serial Port without any Encoding?

27 Oct 2015 by Patrice T

Quote:I am expecting the result data of C# application like the result from Matlab and XCTU. I have tried with SerialPort encodings(ASCIIEncoding, Unicode, Latin). But nothing works. Help me. this is my code,The trick is simple, you receive binary data from serial port, don't convert it.Your...

How to declare a static variable in .h file and define it in a .c file ?

6 Nov 2018 by CPallini

You should declare your variable extern in the header and define it in the source file (without the static keywork: static in source file provides internal linkage). See, for instance: Internal linkage with static keyword in C - Stack Overflow[^].

GCC

static

How to declare a static variable in .h file and define it in a .c file ?

6 Nov 2018 by Richard MacCutchan

You should not be defining them in the header file if they are static, just in the .cpp file. If you are trying to create global variables then you should declare them extern in the header, and give them a value in one .cpp file only, like: // header.h extern int variable; extern int...

GCC

static

Port Assignment

18 Mar 2010 by Avi Berger

You seem to be responding to this article[^]. You should post you questions about an article in the forum at the bottom of that article.As far as your question goes, each bit in the register refers to a port pin. Which pin and what a value of the bit for that pin represents is something you...

Port Assignment

18 Mar 2010 by Richard MacCutchan

bhai_kaju wrote:The only thing I am confused with is ...... I did not notice the forum at the end of the article where questions or comments should be posted.

could not change my serialport cable to null modem

9 Apr 2012 by OriginalGriff

Assuming this is a 9 pin connector, don't worry too much about 1 and 9 - they are DCD and RI respectively so you probably don't need them.Just try connecting 2->3, 7->8 and 4->6 and see if it works. (5 is ground, and you shouldn't need it for null modem since it doesn't go anywhere)

If a program has been stored in the microprocessor, is it then possible for other firms to take that microprocessor and read the program code in order to make a copy of it?

20 Nov 2012 by OriginalGriff

Depends on the microcontroller, and on how the data has been written to it.Some have a security bit which when set corrupts some or all of the data when it is transferred out of the device (PIC devices do this -they are called the Code Protection Bits[^]) You explicitly set these bits once...

how to send "1" to a serial port and then receive the values the pic will be sending me after it received "1"

2 May 2014 by OriginalGriff

Firstly, stop opening and closing the port: it won't help and it may cause data to be lost. While the port is closed, anything received by the physical port will be thrown away...and it allows other applications to "grab" the port as well. And you don't need an event handler to pass the data...

serial-port

PIC

(Stage 2 ) Getting started with Spark Core

10 Nov 2014 by Prilvesh K

Getting started with Spark Core,setup a guide for everyone new.

Arithmetic on aggregated types

26 Nov 2015 by Jochen Arndt

It seems that you don't want to use an enum but a structure:typedef struct{ unsigned hb; unsigned mb; unsigned lb;}BunchOBytes;

embedded

Port Assignment

19 Mar 2010 by Avi Berger

bhai_kaju wrote:I couldn't find any kind of port number assignment or HEX equivalent. So, how do I know what to write in the code, and if anyone could tell me the meaning of this code :" #byte port_b=6 // IC =16c84 "why port_b = 6, not 4 or 5 or anything else.bhai_kaju also...

Port Assignment

18 Mar 2010 by DaveyM69

In a PIC uC, TRISX means Tristate-Port.When a TRIS bit is set to 0 it's port pin is set to be an output, when 1 it is set to be an input.So if you have for example portB which has pins RB0:RB7 you can set the individual pins as inputs or outputs by either writing a complete value to the...

How to set internal clock frequency of PIC16F877 in C

14 Apr 2010 by LittleYellowBird

Hi,You are really on the wrong forum here. Microchip (who manufacture the chip) have their own forum which is actually quite good. Here's the link ....[^]You will need to refer to the data sheet for specific of how to setup the chip and the Hitech compiler help for information on...

How to set internal clock frequency of PIC16F877 in C

12 Apr 2010 by OriginalGriff

Why are you using a 877? It is listed as "Not Recommended For New Design" on the PIC website, which means that they are likely to stop manufacturing it in the near future, if they haven't already. Certainly, it is no longer listed as "in production", and I would be very nervous about the...

2 Dec 2021 by limwy

Hi...I have a problem with c programming for pic32 microcontroller. i have problem programming for I2C using PIC32. i need to program I2C to communicate with ADC chip AD9883A. I can write to the chip in sending a byte. But i have problem sending in multiple byte.This is my codes.. i hope someone...

28 Apr 2010 by OriginalGriff

Not tried I2C myself, but Microchip have a good software library of code examples: I2C examples here[^]It is always worth checking the Microchip site first, as this question is a bit specialist for a general programming site.

29 Apr 2010 by Jonathan Davies

Does the break after your test of limwy wrote:if( I2C1STATbits.ACKSTAT ) take you out of the while loop after the first Ack is recieved?Multibyte transmission after sending the adress and receiving an Ack should be to send 8 bits and wait for an Ack on the 9th clock pulse then either send...

29 Apr 2010 by LittleYellowBird

Hi,I have had a quick look at your code and I think you need to tidy it up a bit - there a few inconsitencies. If you do that it will be alot easier to follow.For example, unsigned char i2cData[4] = {0x98,0x01,0xAA};This array has 4 elements, but only 3 are loaded, then it is...

Input from serial port

11 Jun 2010 by Henry Minute

Have you searched/asked in the MatLab forums. You are far more likely to get suitable answers there than here.

MatLab

C/C++ Interpreter

23 Jun 2010 by Sauro Viti

Look at Ch -- an embeddable C/C++ interpreter[^]: as stand-alone interpreter they have a free of charge version.Anyway you added the tag Microcontroller to your post... In such a scenario a compiler is too much better, both for speed and resource required.

communicating with at90usb1287 by usb port using vc# 2008

19 Oct 2010 by JF2015

Hi,to communicate with the AVR, you will need the AtUsbHid.dll provided by Atmel. You should contact them or try to get the dll from their website. I'm pretty sure they also have some examples (at least for basic stuff as connecting to the controller)

Need Help on Microprocessor Programming

27 Oct 2010 by Ankur^\m/

Well, I have no idea about the project you are working on, but I can help you with AT Commands and sending receiving SMS part.Introduction to AT Commands[^]Read the whole tutorial from the above site. It explains AT commands and it's use in sending and receiving SMS very well.This...

ATCommands

serial communication with microcontroller in vb.net

16 Apr 2011 by OriginalGriff

First thing to do:Open HyperTerminal (or similar) set up the com port, the baud rate, bpc and stop bits.Try to talk to your microcontroler using the keyboard. If that works, then move on to step two. If it doesn't work, then find out why first. It may be control lines (RTS/CTS etc.) it may...

serial-port

having using micro controler problems

6 Feb 2012 by OriginalGriff

I tell you what - you tell me what I should do to fix my car, and I'll tell you.But you can't - you don't know what's wrong with it, what the symptoms are, or even if I have a car.So why ask us a similar question?We can't answer that as is, apart for suggesting that you wire it...

learning making GUI for microcontroller

9 Apr 2012 by OriginalGriff

There is no way we can really help you with that question.We have no idea what hardware you have available, or your ability level.However, it is clear that you have no idea how complex any of this is. So, assuming you have an LCD attached to your uController here is a challenge for you:...

Design

GUI

Noob question: what does this mean PORTD |= (1<<PORTD1); // drive PD1 high

19 Nov 2012 by CPallini

OK, that makes sense provided PORTD1 = 1;You should be able to find #define PORTD1 1 in one of the included header files (I suppose in avr/pinports.h).This way (as Ed already showed)PORTD |= (1

serialport and restart

2 Dec 2012 by Sergey Alexandrovich Kryukov

You need to develop some application-level protocol with some "Restart" command. As you need to do the restart on PC restart/shutdown, you can do this by using the class Microsoft.Win32.SystemEvents. You will need to handle the event SessionEnding or...

Microcontroller to ASP.net Web Form through Serial Port

27 Mar 2013 by Sergey Alexandrovich Kryukov

You need to know that BeginInvoke is the member of System.Windows.Forms.Control or System.Windows.Threading.Dispatcher:http://msdn.microsoft.com/en-us/library/system.windows.forms.control.aspx[^],http://msdn.microsoft.com/en-us/library/system.windows.threading.dispatcher.aspx[^] (WPF).On...

ASP.NET

Microcontroller to ASP.net Web Form through Serial Port

30 Mar 2013 by Dave Kreskowiak

First, you've got no code in here that tells the borwser to not cache the page and to refresh it every so often.Second, your code will only fill one textbox, out of TextBox1 and TextBox2, and not the other, depending on the one character position you look at in the string. Just follow the...

ASP.NET

code execution time cost

7 Aug 2013 by Sergey Alexandrovich Kryukov

You can take the reference on the microcontroller, retrieve the duration of every commands involved, which is usually specified in processor's "ticks". Calculate the duration of the tick from the tact frequency used. Summarize all together.Another approach is to use real-time clock (it it is...

code execution time cost

7 Aug 2013 by Ron Beyer

Sergey's answer is the best, I just wanted to add a couple notes that are longer than what would be placed in a comment...First, the crystal frequency does not really dictate processor clock cycle time, due to hardware multipliers and other factors. Processors can execute more than one clock...

Any helpful tutorials for 8086 microprocessor assembly programming?

16 Jan 2015 by Zoltán Zörgő

Ok, and what have you done to find any? You have really searched? How? This is the first google result: http://frz.ir/dl/tuts/8086_Assembly.pdf[^]Wha isn't this good enough?

Can C# be used for micro controller programming?

3 Aug 2015 by Sergey Alexandrovich Kryukov

There is nothing special about microcontroller programming and nothing so special about C# programming. These days, C# is implemented for CLR and CLI, so it can be used everywhere where CLR and CLI are implemented. It's less likely for microcontrollers, because of this part of this word...

C#5.0

Can C# be used for micro controller programming?

3 Aug 2015 by User 59241

Yes if they support .NET Micro Framework. http://www.netmf.com/[^] and: https://en.wikipedia.org/wiki/.NET_Micro_Framework[^]A widely used platform is Netduino: https://en.wikipedia.org/wiki/Netduino[^]Search Netduino in CP articles.

C#5.0

What is the equivalent statement in c language for .org ?

17 Feb 2016 by Jochen Arndt

A compiler generates relocatable object files which are then linked. While there might be an option for the C compiler (check the manual for your compiler), it is more probable that a fixed start address is passed to the linker or defined in some configuration file (probably a processor specific...

Flash

What means a snippet ((ADC_typedef *) ADC1_BASE) in header file?

12 Mar 2016 by OriginalGriff

It's a standard #define - it means that the preprocessor will replace the text ADC1 with ((ADC_TypeDef *) ADC1_BASE)each time it sees it in your source code. Look up the definition of #define and you'll see what I mean:Preprocessor directives[^]

ARM

How do I convert a embedded C project file into a S19 file ?

21 Mar 2016 by GaneshRfromSpace

I am a beginner to Embedded Systems. I am working on Freescale Kinetis E series controllers. I use Kinetis Design Studio IDE. I wrote a project to blink the LEDS in a customized board. Now I want to make it as a S19 file which I would load to my other project using Terminal Application. Is it...

embedded

How do I convert a embedded C project file into a S19 file ?

20 Mar 2016 by Arthur V. Ratz

Here's how to create S19 files:S-Record Generation with gcc for ARM/Kinetis | MCU on Eclipse[^]andConverting S19 Files into Binary Files with GNU objcopy | MCU on Eclipse[^]

embedded

Getting Transducers Over LAN

13 Apr 2016 by Member 11246861

Within LAN, laptop gets signals from microcomputer and microcontroller using TCP/IP and SPI

How do I communicate from microcontroller to PC without a virtual COM port?

28 Sep 2017 by Jochen Arndt

Quote: - serial port number changes sometimes That might happen when plugging the USB-to-Serial converter into a different connector. But it should not happen when not unplugging the converter. Quote: - another application can "steal" the port and kill the communication COM ports are...

Interrupt in assembly language

23 Apr 2019 by OriginalGriff

We are more than willing to help those that are stuck: but that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for us to do it all for you. So we need you to do the...

assembler

Can anyone please help me out with the code?

1 Jun 2021 by Patrice T

Not your question, but: Advice: Learn to indent properly your code, it show its structure and it helps reading and understanding. It also helps spotting structures mistakes. #if defined(__PCM__)#include #fuses HS, NOWDT, NOPROTECT,...

PIC

Help for this question I tried to answers this for days

12 Jul 2021 by OriginalGriff

While we are more than willing to help those that are stuck, that doesn't mean that we are here to do it all for you! We can't do all the work, you are either getting paid for this, or it's part of your grades and it wouldn't be at all fair for...

Code for Microchip explorer 16 board

12 Mar 2010 by limwy

hi there..i will like to ask if anyone have codes/program for me to study like display on the LCD or control the display throught the button or anything related to the board.. thanks so much...

Port Assignment

18 Mar 2010 by bhai_kaju

I have the complete datasheet of the CHIP but I couldn't find any kind of port number assignment or HEX equivalent. So, how do I know what to write in the code, and if anyone could tell me the meaning of this code :" #byte port_b=6 // IC =16c84 " why port_b = 6, not 4 or 5 or anything...

Port Assignment

18 Mar 2010 by bhai_kaju

Many many thanks to all of you who spared some time from you busy schedule to clarify my doubts. I am clear now and my concepts just got better upon reading the answers, hats off to you guys !! :thumbsup: :-DOne thing I found out in the memory organisation of PIC16C84 in relation to this...

OSCILLATOR OUTPUT

20 Mar 2010 by bhai_kaju

Can anyone please tell me, how to take the output of the internal oscillator in PIC ICs to the output port so that I can view the waveform in an oscilloscope, using C language ( coz m using C compiler :-D )

Port Assignment

18 Mar 2010 by bhai_kaju

Hello, I have read your program for the LED ON/OFF & found it to be pretty simple to understand. The only thing I am confused with is this command :" TRISB=0xF0; // RB4:RB7 are input ; 11110000 in binary "I want to know how did you find out that 0xF0 is the right value for the ports...

OSCILLATOR OUTPUT

20 Mar 2010 by OriginalGriff

I don't think you can, normally, but even if you could it would depend on which of the (vast) PIC family you were using.Why would you want to anyway? Is it an R/C oscillator or a crystal? Because the chances are good that any probing on either will alter the output anyway![edit]Added...

Port Assignment

19 Mar 2010 by DaveyM69

Yes, in that case it is referring to the actual address of the port as listed in the register file map in the datasheet[^] on page 12.Normally you wouldn't define this yourself but instead include the file for the device that Microchip provide (installed along with MPLAB IDE) as everything...

OSCILLATOR OUTPUT

21 Mar 2010 by bhai_kaju

Its an R/C oscillator and the chip is PIC16F72. I just want to check the waveform in the oscilloscope for my own experimentation. :)

LCD TEXT DISPLAY

1 Apr 2010 by bhai_kaju

Hello, can anyone please tell me how to program a PIC16F72 chip to output a text like "HELLO" to a LCD DISPLAY. I am using CCS compiler to compile the code.here is a sample of my code :#include#USE DELAY(Clock=4000000)#FUSES XT,NOWDT,NOPROTECT#USE...

LCD TEXT DISPLAY

1 Apr 2010 by Richard MacCutchan

Take a look here[^], and you should be able to find the information you need.

LCD TEXT DISPLAY

1 Apr 2010 by bhai_kaju

Thanks for your help, but that wasn't of much help to me. Can someone please tell me how to communicate with the LCD like displaying a text. I am using the CCS Compiler and not HI-TECH C Compiler ..Thanks a lot in advance :-D

LCD TEXT DISPLAY

1 Apr 2010 by CPallini

It really depends on the hardware involved. There are a lot of different LCD displays around and you say nothing about the one you have to deal with.As a general rule, reading the documentation should help.BTW: please add further details to your original question, don't post fake answers. :)

Write a C program for I2C PIC32

9 Apr 2010 by limwy

Hi.Do anyone have a simple code for writing/reading and sending a page and not byte by byte, using periheral library?Thanks.

How to set internal clock frequency of PIC16F877 in C

12 Apr 2010 by manaila

I am using PIC16F877 and HI-TECH C Compiler and I wish to include some delays in my code, but i do not know how to prescale the clock or how to set the iternal clock frequency of the PIC coz i wanna use the internal clock. I also dont know how to declare and use the PORTS and PORTS bits in C. I...

29 Apr 2010 by r.ps

limwy wrote:But i have problem sending in multiple byte.Would help if you can tell us what the problem exactly is.Also what does IdleI2C1 do? Most problems with i2c are caused by not handling all parts of the I2C specification(as someone else has already pointed out). For e.g. does the...

Combining code of CN and Timer/Counter

12 May 2010 by limwy

Hi I'm trying to combine two of my code to run together to calculate the frequency and number of line in HYSNC and VSYNC signal. I have got the VGA signal from a cpu and im using change notification to capture the VSYNC signal and timer/counter to capture or count the number of HSYNC lines in...

Combining code of CN and Timer/Counter

12 May 2010 by OriginalGriff

Micheal Godfroid is right in that you will probably get a better response from a more dedicated forum - there are PIC people here, but they are few and far between.In the mean time, I would start by checking inputs etc: Hook up a dual channel sig gen at a low frequency and check you catch...

voice compartor project

15 May 2010 by Sandeep Mewara

Either go here:http://www.codeproject.com/script/Jobs/Edit.aspx[^]ORgo here:http://www.google.com/search?hl=en&complete=1&q=voice+comparator+C%23&aq=f&aqi=&aql=&oq=&gs_rfai=[^]Until unless you don't post your effort and specific issues, it's difficult you get more help than this.

Free 6LowPan stack for CC2530 microcontroller?

9 Jun 2010 by Miljko

HI,I am a fourth year student of Electrical Engineering and currently doing my BSc work with the task to implement a 6LoWPAN[^] stack on TI cc2530.Whether we can help with the selection of a stack, advice about stack and implementation, or refer me to where I could find information that...

networking

Input from serial port

11 Jun 2010 by f_siddiqui

How can I take input from serial port of PC using Matlab? Can I do encoding and modulation in C? If yes then how? If I have a C program, can it be dumped by means of Keil into microcontroller 805?Thank you.

MatLab

Input from serial port

15 Jun 2010 by signal.processor@yahoo.com

Hi, U can mail me your project details @ signal.processor@yahoo.com I will let u know what can be done?Regards

MatLab

C/C++ Interpreter

22 Jun 2010 by siliconray

Hi,I am looking for free C/C++ interpreter. Is there one if you tested and you suggest it.

C/C++ Interpreter

23 Jun 2010 by Sauruxum

see at this: http://codepad.org/[^]This suport many program languages and scriptsAnyway, a compiler is better.greetings

Assembly Microcontroller Request

30 Jul 2010 by rawflewaffle

Hey everyoneI've been attempting to create a code-locked safe for a few days, and have come up with a schematic. The hardware is wrapping itself up, however I have hit a speed bump in my progress. I need help with the software. I am using a pic16f628a to drive a motor in two directions (open...

Assembly Microcontroller Request

31 Jul 2010 by E.F. Nijboer

Well, thanks for the vote of 1 but I cannot help you if you have no idea of what you expect for an answer. In my opinion my answer fits exactly to your question.I am also a little shocked by your statement that as far as you understand there aren't if then statements in assembly. Well, do you...

communicating with at90usb1287 by usb port using vc# 2008

20 Oct 2010 by cs101000

I am working on a windows forms application project. I have a serious problem in communicating with my avr microcontroller: at90usb1287. I have designed a form using vc# And according to the input from the user, am going to send data to eeprom of the avr micro. I want to send data into its...

communicating with at90usb1287 by usb port using vc# 2008

19 Oct 2010 by Johnny J.

I very much doubt that anybody here has the knowledge to help you with that. Much better to contact the hardware manufacturers and get the information from them

communicating with at90usb1287 by usb port using vc# 2008

19 Oct 2010 by LloydA111

Could you not simply use the programmer software to modify the EEPROM? Or do you specifically need to be able to modify it using the application your making in VS?If you do need to do it with your VS project, then there are two choices that I can think of. Either write some code for the AVR...

Need Help on Microprocessor Programming

27 Oct 2010 by Be Yourself

I am totally new to these commands and am going to start a project which is as follows:I am going to work on a project that will turn on or off the electrical equipments in your home by sending "sms" from your personal cellphone to the home cellphone.For this I require two modems .One...

ATCommands

old 8080 architecture and assembly programming

6 Jan 2011 by HimanshuJoshi

There are plenty. Search google for 8080 microprocessor programming books and you will find dozens. Take this[^] for e.g. They will even give you student discounts. Best of luck for your exams.

Verification of HTTP POST packet

27 Jul 2011 by willworknow1

Can anyone tell me what is wrong with this HTTP POST packet? The web server seems to be ingoring it.Prior to URLEncoding and without Base64 encoded data:"POST /Default.aspx HTTP/1.1\r\nHost: www.host1.com\r\nContent-Type: application/x-www-form-urlencoded\r\nContent-Length:...

Verification of HTTP POST packet

27 Jul 2011 by mbue

The server should accept the "Prior to URLEncoding" snippet. Cause thats correct. You have to encode the post data only.Regards.

can i implement a FIR filter on AVR micro?

17 Aug 2011 by ali2012

can i implement a high pass FIR filter with 0.3hz transition band width on AVR micro?

14 Dec 2011 by OriginalGriff

Saying "it's not working" when you are dealing with embedded software isn't a lot of help. Or any, really.We can't see the LCD, we can't see your inputs, we don't know your circuit.I would start by testing the various sections:Clear the LCD, and put a specific pattern on it. Does that...

14 Dec 2011 by CPallini

You'll probably better ask at Microchip forums. Anyway it looks like you don't even switch ON the ADC (ADCON0 bit 0: ADON).BTW: I strongly doubt 'C++' is the appropriate TAG for your question.

14 Dec 2011 by Pranit Kothari

What are you talking about. This may help,How to ask a good question?[^]

14 Dec 2011 by eng saraz

may you delete this Qu plz ??i can not delete it ,, i do not want to get more answers ,until i specify the problem and write it again in la proper way thanks in previous

having using micro controler problems

6 Feb 2012 by CPallini

Probably you meant: "how to measure, using a microcontroller, the AC analog input voltage and report it on a LCD display connected to the microcontroller itself?".Even posted this way the question is too broad, you have to be more specific (after all this is 'Quick' Answers) and detail your...