Tagged Questions

4
votes
1answer
198 views

Microcontrollers with extreme high temperature range

I am looking for components which works at high temperature. Especially I am looking for microcontrollers which works at 180 °C to 200 °C. I am designing downhole electronics for oil and gas ...
-4
votes
0answers
44 views

learning embedded system [closed]

can someone please assist me regarding : 1 The topics that i should read in electronics in order to learn designing schematics for embedded systems as well PC boards. 2 and reference book that i ...
0
votes
0answers
38 views

Can you help me find a suitable MIPS eval board

I'm a ARM guy but recent events have me needing to port some of our code base to a MIPS device and profile it. Mainly concerned with processor utilization. The device target I'm looking for is a ...
1
vote
1answer
140 views

Embedded system engineer's guide to GUI [closed]

For an engineer who solely knows C/C++ for programming microcontrollers, and has no idea about developing fancy GUI application for communication with his embedded systems, Which book and IDE might be ...
1
vote
3answers
122 views

Microcontroller hanging during serial communication

I was working on a project in which microcontroller is communicating serially with computer. Initially it works properly but after some duration (i.e 2-3 hours) microcontroller get hanged. I think ...
5
votes
9answers
397 views

Microprocessors/Microcontrollers - Do registers have addresses?

My Embedded Systems professor keeps referring to the memory locations of registers as their respective "addresses". I'm confused by this; I was always under the impression that in any microprocessor, ...
2
votes
2answers
138 views

Searching for a Micro controller with a battery capability

I am working on a low power design, which will have a MCU powered by my regulated DC power supply from mains(220VAC). But when the Mains fail, I intend to have a battery connected to the chip that ...
7
votes
4answers
278 views

Can individual pins of different port of a microcontroller be mapped to a register and their values be changed when changing the register value?

Q: Can individual pins of different port of a micro-controller be mapped to a register and their values be changed when changing the register value? Scenario: I have used up some pins from each ...
0
votes
1answer
139 views

GPRS modem gets struck/hangs up when “AT” is entered

I started working on a U-blox LEON-G100 gprs modem connected to the PC terminal through UART. Whatever character I enter into the terminal gets echoed back except "AT". When I enter "AT", the modem ...
8
votes
5answers
1k views

Analyzing Accelerometer data characteristics and designing a filter

I have about 32 seconds worth of accelerometer data of a basic driving scenario 25MPH normal roads along with hitting about 7 potholes and a rough patch of road. The accelerometer is mounted on the ...
1
vote
1answer
107 views

ZXCT1009 as a current monitor

I am currently using ZXCT1009 high side monitor for monitoring the current consumption on a bus line for an embedded system we are developing. I am currently using tek scope with Labview for ...
-3
votes
3answers
97 views

Troubleshooting embedded system [closed]

I am in process of troubleshooting an embedded system.It has a 3.0V DC bus line. Accidentally I connected a 12V bench supply..after that the embedded system doesn't seem to be working at all. The unit ...
-1
votes
4answers
178 views

What should hardware do and What should software do?

I am studying embedded system which typically includes MCU and so on. I use the thinking method of using 8051 that using peripheral unit must be done in software. But I learned that some MCUs like ...
0
votes
0answers
33 views

STM32F2 with Wifi Module [duplicate]

Possible Duplicate: STM32F2 build environment I have an STM32F2 microcontroller and a Wi-Fi module. I need to build a binary and load it to the STM in order to make it talk to the Wi-Fi ...
0
votes
2answers
474 views

Wifi Module over UART with STM32 mcu

I am trying to integrate an off the shelf wifi module with STM32f2 mcu over UART interface. I need to test the board after laying out the board. Is there a way I can test this UART interface before ...
1
vote
2answers
404 views

STM32F2 build environment

Would like to get an insight on how to build an environment with FreeRTOS +LWIP on eclipse for building a specific application on STM32. What do you recommend?
2
votes
5answers
223 views

Multi-Core microcontroller eval boards? [closed]

Seeing as there are more and more mutli-core processors systems. I'd like to learn more about them. What mutli-core microcontroller eval boards exist, if any? Thanks
0
votes
1answer
118 views

Stellaris TCP/IP

I have Stellaris LM3S6965 Microcontroller from TI, and i want to run an embedded web server on it. Is it possible to achieve that without additional hardware(ethernet/serial). Thank you.
1
vote
2answers
279 views

how to check SPI signals

I am working with ATmega32-A micro controller. I am trying to read ADC (AD7798) values. I am setting ADC registers as shown below. Images also attached. ...
2
votes
4answers
477 views

ADC registers setup using spi communication

I'm new to microcontrollers - I'm trying to read external ADC values from an AD7798 ADC using SPI communication. Initially I have to setup some ADC registers - some registers are not configured. To ...
2
votes
3answers
580 views

Good FPGA / Micorcontroler development board for real time image processing

I have been working with OpenCV on Desktop environment for the past one year and now I want to shift to dedicated hardware for my real time image processing applications. I have the following ...
5
votes
2answers
515 views

7mm, low-cost, Linux-capable ARM SoC with stacked RAM?

I'm designing an ultraminiature monocopter drone that will transmit 720p, 30 FPS, MJPEG aerial video over 802.11n (UDP) and a high-gain antenna, to a laptop. I've found camera modules that can ...
1
vote
1answer
136 views

mc1322x on Contiki-os, development environment

I want to ask if there is ready to run Virtual Machine image anyone to develop on mc1322x microchip on Contiki-os. Why I ask is this, I'm dealing with this for 3 weeks, and what I advance to take is ...
3
votes
3answers
649 views

Learn C programming before start learning Microcontroller/Embedded Systems [duplicate]

Possible Duplicate: How to become an embedded software developer? I want to know whether it is mandatory to learn C/C++ programming before start learning Microcontroller or the Embedded ...
3
votes
2answers
248 views

PWM timer problem with HCS08 - freescale

I am using a MC9S08LH64 microcontroller's timer module to generate an internal timer for synchronization. bus clock is at 4.3 MHz, modulo is set at 4309 (TPM1MODH and TPM1MODL) and I am expecting ...
5
votes
4answers
730 views

How to Wire a PIC Microcontroller?

I'm completely new to the world of PIC Microcontrollers and electrical engineering so please go easy :) Anyway, I managed to program my PIC 16f627 to turn on three LEDs when push button (trigger ...
2
votes
5answers
974 views

Micro-Controller Operating System with GUI

I'm looking for embedded OS for w micro-controller, it's not clear until now for me what'll be the controller type, but my first priority is to found an OS with GUI can be written in C# or any .NET ...
2
votes
2answers
294 views

Dynamically allocating memory for an embedded application

I am working on a Project that will requires using an MCU to receive frame packets with unknown frame length on reception, but each reception has an octet from which you can deduce the number of ...
1
vote
3answers
116 views

different USB speeds on different chips

I have a USB to ethernet chip (USB 2.0 480 Mb/s) and a microcontroller (MSP430F550x family, full-speed USB 12 Mb/s) that connects to a USB hub (USB 2.0 480 Mb/s). How would I make these work ...
2
votes
3answers
428 views

Which schematic is better for keypad connection to an MCU?

I have this three keypad connection sketches, all of which i've seen in various application, and some i've also used, but i want to know if there is any advantage of one over the other. The keypad ...
10
votes
6answers
608 views

How to Efficiently Decode Non-Standard Serial Signal

I'm an undergraduate member of a research team working on a project that involves an RF-transmitting ASIC, and its wireless receiver which should ultimately send data to a PC. The receiver outputs a ...
1
vote
2answers
212 views

BeeStack and the Freescale MC13224

I've been a long term desktop application developer and now I have the need to dive into embedded. What I am looking to do is implement a Zigbee mesh network where there is one co-ordinator ...
11
votes
7answers
1k views

What happens when an embedded program finishes?

What happens in an embedded processor when execution reaches that final return statement Does everything just freeze as it is; power consumption etc, with one long ...
1
vote
0answers
396 views

PIC32 SPI ISR not being called when RXIF flag set?

I'm using a PIC32MX795F512L SPI3 module in slave mode. My master is sending data over the SPI line but my slave's interrupt service routine is never being called. The RX interrupt flag is being set ...
2
votes
3answers
542 views

Help a beginner who wants to start microcontroller coding

I see lot of chip from Atmel company like AT89C2051,AT89S52,Atmega32,P89V51RD2. Suppose I write a code for Atmega32 which blink one LED after 10 milliseconds. Can I use the same code for AT89C2051, ...
3
votes
2answers
4k views

What will it take to build a small bluetooth device?

I am new to this part of StackExchange. I am doing a project that requires me to keep track of Bluetooth devices. So I want to build a tiny Bluetooth device that can be attached to almost anything; ...
2
votes
4answers
810 views

wifi module with MCU on one board

I would like a microcontroller already interfaced to a WiFi module, with the WiFi interface taken care of. Also, I want to be able to program the MCU to interface sensors or whatever...possibly with ...
0
votes
0answers
142 views

Logging wifi chip address?

I would like to use an Arduio + wifi shield to grab unique mac addresses of any wifi chips within range, these will then be sent to my home server. Right now my chip creates an ad-hoc wifi network ...
2
votes
2answers
587 views

PIC16F877 analog pin configuration

I've been working with PIC16F877. Can someone please explain how to configure its pins to be analog or digital? I saw somewhere that we need to configure ADCON1, ...
1
vote
4answers
861 views

First PIC microcontroller family to learn? and resources? development board?

The only experience I have with micro controllers is with the arduino. I felt extremely limited by the arduino especially in the cases of embedded design. I'm interested in completing a number of ...
2
votes
1answer
248 views

Makefile error while compiling LwbT using TI Microcontroller IDE

I am trying to port Lwbt to TI MSP430 Microcontroller. As a first step, I am compiling the lwbt in TI Code Composer studio as a Standard C Make Project. I have downloaded the lwbt code from ...
1
vote
1answer
253 views

Do it yourself: baby call monitor

This is kind of a hobby project (I'm an informatics professional but I always was fascinated by electronics). I want to build a baby call (basically, a one way intercom); to simplify the electronics ...
9
votes
6answers
1k views

microcontroller programming vs object oriented programming

I have done some basic object oriented programming with C++ (creating a B-Tree, Hashing Algorithms, Double Linked Lists) and I have done small project in C (like making a scientific calculator etc.) ...
2
votes
3answers
1k views

Embedded Systems Wi-Fi

I want to develop a product to make Wi-Fi to connect PC <-> MCU <-> MCU. I started looking for Wi-Fi modules with the stack that I need already implemented and some kind of AT commands interface ...
2
votes
1answer
248 views

need help “hacking” LED display

The display is a scrolling LED sign which looks like this: It is also distributed in the US by Grandwell (SLC16H-IR). The messaging software that it comes with does not allow full control of the ...
1
vote
4answers
2k views

How to choose between little endian or big endian for the processor settings?

We have just selected a new processor for our application, and one of the project options available to me is to select the Endian mode: Little endian or Big endian (under Big endian two more choices, ...
4
votes
3answers
695 views

Usage of the #pragma pack(1) compiler directive on embedded applications

I have recently come across this #pragma pack(1) preprocessor directive and was wondering why it is being used? I Googled the usage, and found it has other options such as push,pop etc. Has anyone ...
7
votes
2answers
322 views

Do I have to worry about the depletion of IPv4 addresses in embedded applications?

We're nearing the exhaustion of IPv4. What should be my concern about it for embedded devices? I don't know about others manufacturers but until today, Microchip TCP stack doesn't implement the IPV6. ...
2
votes
1answer
816 views

ISO Example Home HVAC Control Schematics and Circuit Design Info

I am currently interested in determining how a home thermostat controls a home HVAC unit. I have run into plenty of schematics that can control a HVAC window unit, walk in freezer, water temperature, ...
6
votes
3answers
292 views

Embedded System LINT use

I currently develop embedded systems using a number of different compilers, the most common coming from IAR systems. My love of hardware is what drives doing embedded systems and firmware. I however ...

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