The process of identifying, quantifying, and correcting errors in the operation of a system
0
votes
1answer
116 views
Have I damaged this DC-DC converter? [on hold]
I bought this DC-DC Adjustable Power Converter Module, to convert 12V DC to 5V DC.
Initially it was working fine, but I connected IN- and OUT- pins to the each other and used it as a common ground ...
2
votes
2answers
82 views
Reporting crashes/resets in Embedded Systems(8 bit)
I'm using PIC controllers, and I have used watch dog timers to trigger a reset in case of the s/w gets stuck somewhere, and also to support in case of severe hardware crashes.
I think that resetting ...
1
vote
1answer
40 views
JTAG Bus Length
Could anyone tell me if JTAG requires to have the same bus(wire) length for TDI, TDO, TMS, and TCK?
4
votes
2answers
194 views
How is debugging build implemented in VHDL?
I come from C background and am being introduced to VHDL. I read about the syntax and the concurrency/consecutiveness of actions.
Now I am getting to wonder how are development-only features ...
1
vote
0answers
39 views
Atmel Studio JTAG Debugger Behaviour
The qeustion:
I would like to know what is different about the way JTAG treats the "step over" and "step into" commands.
Background:
I am trying to set a GPNVM bit on a SAM3N (ARM Cortex M3) chip ...
0
votes
0answers
80 views
ARM SWDIO only works when touching 3V and SWCLK with fingers
I made a new STM32F2 prototype board and SWDIO debugging only works when I connect the Vinputref and SWCLK with my fingers. It was working fine on previous boards: it's the same circuit but different ...
0
votes
1answer
36 views
AVR Dragon: Debug Frequency?
I think of buying an AVR Dragon or an AVR JTAG ICE MKIII. But before I do this, I need to know what side effects the reduced debug frequency has on an ATMEGA328P while debugging. I make heavy use of ...
2
votes
1answer
87 views
short to ground in custom Arduino shield only when connected - how do I find it?
I've built a custom Arduino shield using a PCB and surface mount components. The board has a short between power (5V) and ground (GND) when it is connected to an Arduino Due.
When the shield is not ...
4
votes
2answers
229 views
Debugging my bipolar stepper motor design
I'm trying to connect a NEMA 17 Bipolar Stepper Motor to an Arduino Uno using an L298N Stepper Motor Controller Module and control its speed using a 10K potentiometer.
I haven't found any examples ...
4
votes
1answer
129 views
What is the difference between JTAG and EJTAG?
I want to know what is the difference between JTAG and EJTAG? I know about JTAG as it's a hardware tool used to examine the memory and registers. Correct me if I'm wrong.
2
votes
1answer
106 views
Can't Program ATMEGA With ICSP
For a project I've been working on, I've re-designed a working PCB schematic so that it uses all SMD components and now features an ICSP header. The board is essentially an LED driver controlled by an ...
0
votes
0answers
67 views
Debug using avr-gdb from remote debug server in Proteus/ASIS
I am trying to debug an ATmega2560 using avr-gdb using an emulated application running in Proteus/ASIS. The idea is to emulate the JTAG from the microcontroller and create a target debug server from ...
2
votes
3answers
184 views
Remote-debugging stm32f4
I'm rather unexperienced on the field of microcontrollers, I come from a Java background so the question might seem a bit noob but I didn't find much information on this.
So is it possible to debug ...
0
votes
2answers
129 views
Understanding this unknown transformer
This is my first time posting but I have gained a lot of knowledge from this community over the past few months.
Here is the situation: I have an old Hobart OM-321 Tig welder which my tech has told ...
1
vote
1answer
125 views
ARM cortex M0 debugger
I plan to use http://www.nordicsemi.com/eng/Products/Bluetooth-R-low-energy/nRF51822 to develop some products. I plan to get a breakout board made but even if I do have it made I was curious as to ...
0
votes
0answers
27 views
Trigger button press via mspdebug
I am experimenting with a MSP430 (inside a eZ430 Chronos), and I’d like to debug my code while the device is attached to the USB debug board. It seems that the buttons do not work while the device in ...
4
votes
2answers
84 views
Debugging DDR bus issues
We have an SBC board, in the style of the Leopardboard or Beagleboard, that is misbehaving. It's based on the Leopardboard design (TI-DM368 CPU, DDR2 RAM, NAND Flash).
Developing software on the ...
1
vote
0answers
111 views
Chipkit Uno32 Debug with mplabx
Hello guys I bought a good night chipKIT uno32 to use it with projects but with the language of c32 with IDE MPLABX and pickit 3, everything went well but when I want to debug a project says disposito ...
2
votes
2answers
176 views
Variable declared in code but doesn't exist in memory
I declared some variables and matrices globally in PIC16F887A code, but when I simulate that code on Proteus, one of the matrices doesn't exist in the "PIC CPU variables" window, while all the other ...
10
votes
2answers
674 views
What could cause a microcontroller to unexpectedly reset?
One particularly irritating variety of bug in a microprocessor-controlled system is for the microprocessor to unexpectedly reset. An important tool for debugging this kind of problem is a list of ...
1
vote
2answers
588 views
Atmel Studio 6 Simulator Not Showing Up
I was looking to run the simulator for an AVR controller, but when I went to set my debugging tools as outlined in this video- http://www.youtube.com/watch?v=9QlDSNeuAdY
I do not have anything show ...
2
votes
1answer
160 views
How can I debug my 555 timer circuit?
I'm trying to build an LED chaser circuit using a 555 timer and a 4017 counter. I've built the circuit successfully on a breadboard, but now that I tried to create a soldered version it just does not ...
1
vote
2answers
156 views
What is the most efficient way to debug CANbus from a PC?
I have several working and inter-operable boards using CANbus. I've shipped hundreds of products using these boards, with no problems. One of my customers is now saying that his fault log shows ...
0
votes
0answers
128 views
How can I isolate a short (in a mobile phone in this case)
I have a Nokia 6030 cell phone, and it's been serving me 7 years. It developed an interesting problem, which looks like a short of some kind: the battery drains very fast, for an hour or so, and the ...
1
vote
1answer
146 views
Troubleshooting ready board with LM339 IC?
I thought, I will not bother any more with this project of mine, but I really run out of ideas trying to get it to work.
When using breadboard, the design works as expected (did it couple of times ...
2
votes
0answers
187 views
How can I debug/get output from a microcontroller using cc-debugger?
I am working with TI's CC2540 SoC using CC2540dk-mini. My software stack is:
Ubuntu 12.04
sdcc Compiler
cc-tool to flash programs onto board using cc-debugger
I can compile, build and flash ...
2
votes
1answer
130 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?
3
votes
2answers
176 views
What is an MCU program trace?
I have read in a few places about Atmel's support of program traces on their high-end debugger/MCUs. It seems to be that some of the AVR32 processors can be 'traced' by the AVROne! ...
2
votes
0answers
702 views
MPLAB XC8 vs MikroC problem
I have been trying to write a program for LCD on PIC18f452. I found a library and worked on it and MPLAB XC8 compiled it successfully. I tested it in ISIS and it ...
5
votes
3answers
524 views
How to discover memory overflow errors in the Arduino C code?
Several times I had some suspicious outputs on the Serial Monitor after uploading code to the Arduino: like eternal output of whitespaces or suddenly cut of strings or scrambled strings.
Because ...
1
vote
1answer
141 views
How can I take look inside of the atmega1280?
I want take look at the memory and at the element inside the atmega1280.
I compiled Ardupilot sketch and I upload it with arduino.
I started avarice with the following command:
...
-1
votes
2answers
149 views
Circuit is oscillating - why?
One area of a circuit I'm looking at is the schematic shown below.
The Vin is a discrete signal, currently, I'm not sure of what the voltage is, (its slightly difficult to probe the circuit but I'm ...
1
vote
2answers
75 views
Debugger Atmega1280
I have an Atmel board, precisely an Atmega1280. I uploaded my code on the board and I want debug it to take a look at the stack memory.
I just have the mini usb cable for the communication.
I read ...
5
votes
1answer
452 views
Diagnosing SD card failures
I have an embedded device using an SD card. Occasionally I see SD cards fail, and I need to understand the failure mode.
Are there tools, perhaps for specific manufacturers, that help me understand ...
0
votes
1answer
86 views
SignalTap II: OR trigger conditions, instead of AND
I'm using the Altera SignalTap II that comes with Quartus II. As far as I understand, each pin can be assigned a trigger condition. It seems that acquisition only stops when all the trigger conditions ...
3
votes
2answers
2k views
JTAG vs SWD debugging
Skimming through this article I'm just wondering, what are the benefits of SWD debugging over JTAG debugging?
I understand SWD uses less wires/pins, takes up less space etc. But how does it play out ...
7
votes
3answers
158 views
How do I find energy leaks?
I'm in a process of writing software for eZ 430 Chronos watch using TinyOS. I want it to be as low-power as it is possible.
Unfortunately, my measurements show power consumption of about 350uA @3.3V ...
0
votes
2answers
183 views
Why would plugging in a logic probe change values in a digital circuit?
I teach a digital logic course, in which the students used TTL chips and LEDs on digital trainers (including the Global Specialties PB-503C). With one student's PB-503C, the values on the lights ...
1
vote
3answers
501 views
Debugging I2C bus using an oscilloscope
Is it possible to debug an I2C bus effectivaly with a two channel (plus an external trigger) oscilloscope?
I've been trying to do it, to catch a single transaction starting from the start until the ...
0
votes
1answer
371 views
Debugging a PIC16 with MPLAB X
I am having problems with the MPLAB X debugger (although the release build works fine). It behaves very weirdly with my PIC16LF1937-based PICKIT3. Specifically:
It gets caught in random infinite ...
4
votes
3answers
916 views
PIC12F1822 program counter jumping around during debug and release programming
I am having the most awful trouble getting things up and running with my PIC12F1822.
I'm using MPLAB 8.86, an ICD3 and have the chip, in a DIP package set up in a breadboard on my desk. As far as I ...
3
votes
1answer
1k views
Op-Amp based schmitt trigger working in simulation but not in reality
I'm trying to build a simple schmitt-trigger to convert an audio input signal to an approximate square wave of the same frequency. The output of that will then be fed to a microcontroller to detect ...
3
votes
2answers
3k views
How do I debug a Arduino Uno with gdb on a Linux pc?
How do I debug (source code single step) a Arduino Uno with gdb on a Linux pc?
Please note that I do not like to use AVR Studio in wine or VirtualBox.
Question 1: Physical connection
How and what do ...
4
votes
1answer
619 views
MicroSD Card Slot SPI Signals
I am having trouble communicating with an microSD card with an AVR on a board I'm working on. I used an oscilloscope to have a look at the signals coming out of the microSD socket on my board. I saw ...
2
votes
1answer
6k views
How to debug C code of a PIC16F84A in Proteus ISIS VSM?
I have just downloaded the Proteus ISIS Circuit Simulator and I've noticed that in their samples, they have PIC projects based on C and they could step through the C code in the debuger.
Here is a ...
5
votes
3answers
338 views
Did I Kill My Chip?
I've got an ENC28J60 Ethernet Controller in a circuit I'm building. I was testing it out but when I got to the point of talking to it over SPI with my micro-controller I got utter silence back from ...
3
votes
1answer
653 views
ENC28J60 not getting link
I use the ENC28J60 MAC+PHY ethernet controller (datasheet) in a fairly standard setup as shown in the schematics below.
I can talk to the ENC via SPI, but I cannot get a link-up when I plug in an ...
3
votes
6answers
7k views
How to debug the arduino sketch?
I started coding for arduino very recently. And these bugs in the code are killing me. As there is no hardware debugger in the arduino, serial.print() is my only resort. Please tell me the ...
0
votes
1answer
87 views
Debugging Vds exceeded in motor drive application
I have an existing motor drive circuit that uses an Allegro 4935 to drive a brushless DC motor. The circuit has been working fine. We've decided to change motors, now with some of the motors the ...
4
votes
2answers
658 views
DS1307 RTC Debug
I'm having trouble with getting the DS1307 RTC to work. I'm talking to it via an Arduino, and I'm just trying to get an example sketch to work. I've tried two different libraries - one from Ladyada, ...
