Questions tagged [configuration]

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DDR3 configuration on custom board

I have a custom board with a new platform which does not have any tool to configure the DDR setup( I asked). I have the Source code for the uboot.config (CONFIG_DDR.c, CONFIG_DDR.h etc). So I have to ...
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1answer
62 views

How are Microchip configuration straps used?

I'm working with a Microchip USB hub IC (USB2533 to be specific) and can't nail down a straightforward answer on how their configuration straps work through my own research. On this device, many pins ...
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25 views

Signal path / configuration help for a PLL for AWG

In our system signal path, there is a clock signal being sent from the FPGA noted as SCLK. This goes to each component not including the MCU. The way I understand this is that the PLL receives the ...
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1answer
31 views

FPGA configuration - Multiple Device SelectMAP - sharing PROG line

So I wanted to program multiple FPGAs (different images) by using a processor over SelectMAP interfaces. I plan on sharing the PROG and INIT lines across the multiple images like this: This issue I ...
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1answer
41 views

Vivado partial reconfiguration error

I am trying to implement a minimal partial reconfiguration project using the Vivado GUI. I have successfully enabled the project for reconfiguration and created a partition definition. The problem ...
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53 views

Need help to configure the PCAP04

When I first used the PCAP04 chip for measuring capacitance, I felt very annoyed, because the information on this chip was really a bit garbage. Many things are not found in the official manuals, and ...
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22 views

Need to build custom cable for Xilinx Programming

I need to build a cable that will connect 15 signals between two PCB boards. This will allow me to program a Xilinx FPGA over the select map interface (clock, data rw, cs). Since these signals are all ...
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1answer
36 views

Calculating maximum series/parallel configurations for unique resistors

Say I have 4 unique resistors. How would I calculate all the possible unique series and parallel configurations and thus, calculate all the possible total resistances? And how can I expand this to ...
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35 views

Configuration of optic sensor via I2C (STM HAL Library)

In the datasheet of VCNL4200 it says that PS_CONF1 register's address is 03H_L and PS_CONF2 register's address is 03H_H. How can I configure these registers with STM32's hal library? As far as I know, ...
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2answers
126 views

Booting multiple FPGAs using a single SPI Flash

I am using 3 Artix-7 FPGAs in my design. Is it possible to use single SPI configuration Flash to program 3 FPGA device. I have found information about multiple boots for one FPGA but not multiple FPGA ...
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1answer
35 views

Pin Assignments for DE5-Net

I am porting a working sequential circuit from a DE0-Nano to a DE5-Net. The circuit is driven by one global 50 MHz clock signal. The circuit only has one input and one output port for serial ...
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59 views

Can multiple different vendor FPGAs exist on the same JTAG chain and be programmed?

During development work, JTAG is used to configure FPGAs. For the final version of the system there would be a few different options that will carry out automatic configuration of the FPGA actively or ...
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1answer
39 views

Melexis sensors how to get PWM output?

The Melexis MLX90372 datasheet says that it can output either SENT protocol or PWM. I do not see anywhere in the datasheet how to put it into "PWM Mode" as they call it. Nor do I see how to ...
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2answers
689 views

Can you find the datasheet for this IC

Can someone help me to identify this VISHAY IC? Tips on how to do this are also welcome :). I could not find anything by searching with the numbers on top of the IC. The IC is used in a MKS 649B ...
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1answer
70 views

Automatic series/parallel configuration

I've been thinking about this issue for a while now and came here for your guided assistance. Situation: Ik have 4 resistors (12V/1.25W heater pads). I need to power them with either a 12 or 24V ...
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2answers
185 views

Why would a BLDC motor be “noisy” in reverse

I have a BLDC motor on a controller I built running in both forwards and reverse. However the reverse direction is substantially noisier than the other and the motor vibrates more almost as if the ...
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1answer
210 views

U-Shaped Electromagnet Configuration for a motor?

I've been thinking about motor designs and where all the power goes for an electric motor, especially in terms of used/unused power. I noticed that in most motor designs, the neodymium magnets float ...
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1answer
65 views

Problem in configuration of Tiva TM4C1294NCPDT on Code Composer Studio

I am using code composer studio and using the microcontroller below, I used Energia software to run a simple program and it runs, but when I use CCS and try to flash an example program for this MCU ...
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464 views

Which 18650 battery connection layout is best?

I am building a 5S6P battery with 18650 cells. I have limited space so the geometrical layout is constrained. I can think of 2 "optimal" ways to layout the cells connections but I don't know which is ...
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2answers
977 views

Kelvin type connection

I'm studying semiconductor parameter analyzers. Those instruments are based on SMU (source and measuring unit) which can work either in the V-mode (they force a voltage on the device under test and ...
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68 views

Multicontext FPGAs

I recently read some papers that mentioned multicontext FPGAs, which have several copies of every programming bit. This allows to download a bitstream to the board while the active context (the ...
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2answers
250 views

NOR Flash - Max Frequency of Operation

I am wokring on a board that uses Micron 1Gb QSPI (mt25qu01gbbb8e12-0aat) to load configuration on to FPGA at power on. As per the datasheet of QSPI (https://www.micron.com/-/media/documents/...
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1answer
496 views

MPLABX with PIC18F4550 Debug and programming are not working

First I used MikroC for PIC to modify a firmware to a PIC18F4550. I was programming the device using MPLAB IPE and the PICKit3 programmer, everything was ok. Now, I need to change to MPLABX XC8 ...
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1answer
49 views

Why always in communication protocols R/W configuration,Reading is configured by “1” and writing by “0”? [closed]

when a microcontroller communicates with another one via one of the communication protocols there is a configuration bit in a control register to choose whether to send(write) or receive(read) this ...
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1answer
4k views

USB descriptor error on WIndows 10 - An invalid parameter was passed to a service or function

I have a USB 2.0 peripheral device based on an STM32 development board with hand-crafted code in C. This device works when connected to a Windows 7 computer but fails when connected to a Windows 10 ...
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1answer
100 views

Is there an exponentiation configuration for MOSFETs or Opamps?

I am working on a problem that can be made really simple if the output of the transistor were to be a fixed power of the input. For ex., if the input is 8 V and power is 0.333, then the output voltage ...
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2answers
851 views

Altera has created EPCS and EPCQ devices, can only these be used to store FPGA configuration data?

FPGA configuration data must be stored in external non-volatile memory. Can we use just any flash memory or only specific types? What about EEPROMs or any other nonvolatile memory device? Edit: I am ...
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1answer
149 views

Get more AS-attached flash chip information from ALTASMI

I am playing with the attaching various configuration flash devices to the Altera Cyclone 3. In particular, I want to replace EPCS16 (2MB) with W25Q128 (16MB) - for both size and cost reasons. Is ...
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1answer
431 views

BJT (Common-Collector Configuration)

As we know that for the transistor to operate in the active mode, it should have emitter-base junction as forward bias and collector base junction as reverse bias. So the common-collector ...
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80 views

Pin strength configuration

Please, help me understand the specsheet on page 2-22. The table says that 3.3V standard supports 12mA drive strength, but there is also a "software" defined strength. What is it? There is also a "...
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1answer
202 views

Taking Quizbowl buzzers and connecting to a computer

Recently I Bought quizbowl buzzers from buzzersystems.com and the buzzers i received use an rca cable. If you did not know basically, when you click a button, it sends a signal to a box which ...
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1answer
5k views

Error when using debugging under Atollic TrueStudio / STM32

I'm using STM32F103C8T6 Atollic TrueStudio STLink2.1 Error I get when debugging: Debug configuration set in TrueStudio: What worked before was in SW4STM32/Eclipse, with the following settings. I ...
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1answer
3k views

Why is such amplifier configuration chosen for HB100 microwave sensor?

For HB100 microwave sensor module, I don't quite understand how this amplifier works and why it's been chosen instead of something simpler, such as two inverting or non-inverting op-amps. What can see ...
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1answer
339 views

Calculate Collector Voltage In Collector feedback bias Configuration

I've tried using KVL and KCL but I always end up with two or more variables, and I've got another question, how can I know if this transistor is in the saturation region?
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35 views

Why is the order of these serial components changing the current flowing? (Keithley 236)

I have an electronics setup I'm using for research purposes. I'm having some strange behavior so I've tried to boil it down to the simplest working example. Most basically, a voltage is being applied ...
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1answer
519 views

MPLABX + XC8 + Proteus 12F683 Configuration Word problem

I use MPLABX + XC8 with Proteus to simulate PIC designs. It usually works fine...but I recently tried to use a 12F683 part and I get an MPLABX message "ERROR writing to CONFIG_MEM". I think the ...
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1answer
993 views

Transmit and receive data with nrf24l01

I have little bit problem to transmit and receive data with nrf24l01. I use spi communication to communicate my MCU and nrf24l01. My spi communication is working. But i cannot receive any data from ...
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2answers
397 views

usb to rs232 serial communication

I have to configure my rs232 to device(transmitter) using usb to serial communication. I have tried with usb to rs232 cable and connect the transmitter 6 pins to the db9 connector but it did not work. ...
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62 views

Embedding python interpreter in the TM4c1294XL

I have a python file that I want to run on the board. Hence I want to embed the python interpreter (written in C) in the board. I managed to write separate C project that runs the Python file. It ...
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1answer
69 views

Cost of expandable memory [closed]

Given two computers: Has X gigabytes of RAM, that's the amount it ships with and that's all it will ever have, it can be designed around that number in whatever way is most efficient, solder chips ...
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11answers
6k views

Alternatives to a classic DIP switch

I'm looking for a part that enables a user to frequently change a configuration. Right now I'm utilizing a SMD DIP switch connected to an I2C I/O expander. What bothers me is the large footprint of ...
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1answer
495 views

Configure Serial with registers on STM32l073RZ

I'm trying to configure the Serial of my STM32L073RZ with registers to send datas on the PA_9 pin. Currently I have this script ...
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2answers
2k views

Can I run my Nios II from program in SRAM or SDRAM, how?

Is there a "standard" (Altera supported) method to run my Nios II from off chip memory like SRAM or SDRAM? Since the design is in prototype stages, it means that I am using JTAG for configuration and ...
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1answer
286 views

What is the effect of remapping ports on a USB hub

I'm using the USB2517 for a project. It's a seven port hub, and I'm using six of them. I'm working through the config settings, and I'm stumped by the port remap registers. The datasheet gives the ...
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1answer
91 views

Begin programming using audio signals

I recently purchased a Amcrest ProHD IP2M-841W 1080P camera where the initial configuration is done over some kind of audio signal, a companion app for mobile phones which, at the end of the ...
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3answers
3k views

AtTiny85 analog / digital pin configuration order in setup

Bug in compiler or what ever? Simplified circuitry there is 2 LEDs and 1 analog input. LED connected to pin PB1 lights very dim when output is high. It seems that output has been configured to high ...
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1answer
264 views

All possible BJT circuits relating to polarity

The BJT can operate in 4 different modes/zones since there are two voltages on it: Active mode Inverse/Reverse active mode Saturation mode Cut-off mode Because Emitter and Collector junctions can ...
3
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1answer
859 views

FPGA Configuration Flash as General Purpose Memory After Boot

I am currently working on a system with a Spartan-6 FPGA and have a need for some low volumes of non-volatile memory to be used during system operation. My question is, since I have a relatively ...
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1answer
1k views

Combine a vhdl and verilog configuration file

I'm trying to create a simple proof of concept regarding the configuration of our testbench (binding the correct entities to components/modules). The structure is as follows: top(VHDL entity) --...
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1answer
674 views

How do I work out the pin configuration of this crossfader with a multimeter?

I got this crossfader out of an old DJ mixer. I want to use it in an electronics project of my own design. It's got 4 pins - which I presume are 2 x input, 1 x output and 1 x ground. Using my Fluke ...