Questions tagged [code]
The code tag has no usage guidance.
131
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14
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Write over USB using the printer_basic example for SAM E54
I was trying to use the SAM E54 Xplained dev board to achieve printer communication using this example from Microchip https://github.com/Microchip-MPLAB-Harmony/usb_apps_device/tree/master/apps/...
- 285
0
votes
1
answer
76
views
Code protection (firmware security) in PI PICO RP2040?
What are the available code protection (firmware security) options for off chip flash in PI PICO RP2040 for industrial IP critical designs?
- 11
2
votes
1
answer
153
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How to convert the ADC/PDB part code of Teensy 3.2 for Teensy 4.0
I was working on two thumb ECG device on Teensy 3.2 but Teensy 3.2 was out of stock everywhere, so I was having only option to buy Teensy 4.0, now I was having code for Teensy 3.2, the below code is ...
- 71
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0
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25
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Photovoltaic array reconfiguration for a 3x3 array under partial shading conditions
I'm trying simulate photovoltaic array reconfiguration using particle swarm kptimization in MATLAB Simulink.
I need to build a controller for the switching matrix that switches the arrays based on ...
- 1
4
votes
1
answer
163
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Noob questions about my accelerometer (ADXL345) and Arduino components in general
I've just bought this accelerometer: https://www.amazon.co.uk/XTVTX-ADXL345-Digital-Acceleration-Gravity/dp/B09NRFDH5J/ref=cm_cr_arp_d_pl_foot_top?ie=UTF8
I've bought it to learn about accelerometers ...
- 103
2
votes
1
answer
199
views
ESP32 PWM duty cycle measurement from input
I am trying to measure the duty cycle interval (from falling to rising edge) in microseconds of an incoming PWM signal of 20 KHz.
I made a test PWM signal on a GPIO pin (50% duty) and connected it to ...
- 21
0
votes
1
answer
75
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How to monitor your code execution written for any electronic device while they are operating?
I am working on a mobile robot that includes motors, proximity sensors, encoders, and MCU. I am powering my MCU CC1350 Launchpad using the onboard power supply. The IDE I am using is Energia IDE, ...
- 55
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0
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38
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How to implement Airband (Aircraft band) in this MATLAB code
I am researching Airband (Aircraft Band) for the Telecommunication course, but the professor didn't explain what to do exactly in simulation except saying that I have to do AM modulation scheme. I ...
1
vote
0
answers
50
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What is wrong with this PIC16F877A HCSR04 example?
I am working on distance sensor with PIC16F877A.
I am using MPLAB IDE AND XC8 compiler.
My goal is to gradually turn on the right leds at certain distance levels.
but the leds are blinking unstable. ...
- 87
2
votes
2
answers
342
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Identifying unique color code of non-inductive wire wound resistors: Weird resistor color coding, never seen before
Here we identify the color code determining the values of non-inductive wire wound resistors, specifically Yageo's NKN series (but applicable to other manufacturers of this class), which are a unique ...
- 775
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0
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267
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ILI9341 display interfacing with stm32f103c8t6 with TFT_ESPI library
I am trying to configure stm32f103c8t6 bluepill with ILI9341 display using the tft_espi library .
Connection
stm32 ILI9341
PB15 -> MOSI, T_MOSI
PB14 -> MISO, T_MISO
PB13 -> SCK, T_SCK
PC15 -&...
- 187
2
votes
1
answer
408
views
Trouble using the UART with RPi Pico
I'm making a remote controlled machine using a pi pico to drive the motors and read some sensors, and a raspberry pi 4 to send commands to the pi pico via serial and host the web interface.
I'm ...
- 125
0
votes
2
answers
147
views
Is it possible to write a program that calculates its own energy usage?
If I have a program (e.g. a small Python program) on a specific machine. Would the program be able to measure how much energy its computation costed?
I think, there would be two possible ways to go:
A)...
- 101
3
votes
2
answers
135
views
AD5693 digital to analog converter
I am using an AD5693 as digital to analog converter with an Arduino Uno. I have connected the SDA andSCL pins of the AD5693 to the I2C pins of the Arduino Uno. I have connected the LDAC active low to ...
- 187
-1
votes
1
answer
81
views
Can't get Arduino output to work using IRremote Arduino library
I'm trying to send an infrared signal to my LED-strip-receiver, but no code makes the LED work (light.)
I have the IRremote.h Arduino library installed on version 1.18.15 and I found this example/test ...
0
votes
1
answer
31
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How to use TA1 of P1.6 without also using it on P1.2 on MSP430F1101
I have been struggling for a lot of time now, training to use the pwm function on pin 1.6 of the microcontroller. For P1SEL=BIT2, it is correctly using TA1 on P1.2, but for P1SEL=BIT6 it is not using ...
0
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0
answers
43
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NFPA70E Question: My company provides electrical inspection services, does my technician need to wear a hot suit?
So my company provides preventative maintenance inspections, wherein the technician will open a large number of electrical panels, rated from 120-480 volts, sometimes up to 30 panelboards in a single ...
0
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0
answers
59
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8 bit divider can you help with it? [duplicate]
This is the vhdl code and it need more, can you help me?
...
2
votes
1
answer
122
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Can't understand this PID code
I am having trouble understanding some PID code on an FPGA that is posted on github, by David Paquette.
I will paste it in at the bottom of the post.
It looks very compact and neat, and I understand ...
- 986
0
votes
2
answers
166
views
I want to implement an Z transform Equation in C (with saturation limits)
I will start from the beginning . I had a PI controller with saturation limits (+4 and -2) whose Laplace equation is as follows (0.05s + 0.5)/s. Sampling time of 40 micro seconds
Using Tustins method ...
- 11
0
votes
1
answer
97
views
STM32 - developing code without controller
Is it possible to develop a code for STM32 (hobbyist) without controller attached and test it? Is there a simulator mode or some other possibility? I do not have enough space to let the project "...
- 171
2
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0
answers
39
views
add 2 buttons to this sketch
Can anyone tell me how to add 2 button switches to this sketch (one forward and one reverse) for a second motor?` This code works great and I would like to just add the some button switches to pins 4 ...
- 23
1
vote
1
answer
56
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How can I make Verilog HDL ModelSim test bench for a simple ripple adder circuit output an addition table instead of a long list of every calculation?
I've completed my assignment and I'd like to make the output look something like this, with one table for sum output and one table for carry output:
...
- 15
0
votes
1
answer
266
views
VHDL code for ALU and ROM connection
I need to connect an ALU with a two-port data memory, but I can only implement this far, and I don't know what is missing, plus I am a bit confused as to what to write for the testbench code ...
- 23
0
votes
1
answer
255
views
ADS1115 differential measurements - resolution limited to 12 bits instead of 16 bits
I am trying to read a differential voltage with an ADS1115 (https://www.amazon.fr/gp/product/B07RJT3GHC/) hooked up to a Teensy 4.1.
I am using Adafruit_ADS1015 library (https://github.com/adafruit/...
- 1
0
votes
0
answers
35
views
download code via SWD ADuCM3029
I made my own PCB using ADUCM30299 as microcontroller;
in this card I also have a power management, BLE, Flash memory,USB Type C
when I tried to calculate the voltage in SWD_CLK, SWD_DATA, ....
I find ...
- 11
2
votes
2
answers
1k
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How to find SMD resistor and capacitor value and correct size
I'm new to the SMD world and struggling to find an easy and quick way to get the correct SMD resistor and SMD capacitor size and value based on a circuit schematic; any tips will help.
For example, I'...
- 23
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0
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53
views
How would I use PhaseFrequencyOffset correctly in MATLAB?
So I am currently using MATLAB Live Script to run a script with a modulation index of infinity, but at this point im using 5. The programme itself is a synchronous demodulator using a non-coherent ...
0
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0
answers
26
views
stc12c5a60s2 similar code but typed in different PC not working in keil
Is there any reason why the code typed in my friends pc(bottom) works properly while the code I typed in my pc(top) doesn't? Both doesn't seem to have any error when compiled on my PC, but when ...
- 33
0
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1
answer
75
views
Differences Between " P1SEL |= BIT5 + BIT6 " vs " P1SEL= BIT5 | BIT6 " in embedded C
Is there any difference between " P1SEL |= BIT5 + BIT6 " vs " P1SEL= BIT5 | BIT6 ". If there is , what is it?
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819
views
Problem in Computing the Energy in Energy Meter using ESP32
So me and my groupmates are been working on with our thesis project about energy meter. In our project, the esp32 is the main board we are using. We also have voltage sensor (ZMPT101B) and current ...
0
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1
answer
97
views
Can anyone spot my mistake (VHDL)
I have been scratching my head with this one for a while. Probably a simple problem to people familiar with VHDL on Vivado.
I have inserted all my code below. I am creating a 32 bit register from D ...
- 986
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1
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83
views
Can I sell and install homemade smart light switches legally?
I have designed and made prototypes for a smart light switch. It involves inserting a PCB into the work box behind the switch and is powered by the household AC.
The goal was to sell these locally and ...
-1
votes
1
answer
855
views
VHDL issue with the code [closed]
I have ran into a trouble when trying to compile my code for the project. This is the error message.
-- Compiling entity comb_lock
-- Compiling architecture comb_lock_arch of comb_lock
** Error: ...
6
votes
5
answers
399
views
How is digital data represented in analog waves? [closed]
This question is simply coming from an intrigued teenager, so if it has any flaws, I'm sorry for the inconvenience.
To my knowledge, when digital data is transmitted wirelessly, it is first encoded ...
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-1
votes
1
answer
69
views
Help with an Mbed LCP1768 assignment
Could someone help me out and see if my code is correct please and thank you.
...
1
vote
3
answers
361
views
Servos going crazy! Help! [Solved]
Every time I boot up the board (DFRobot Bluno) the servos start moving without me telling them to. Earlier, it worked perfectly fine but since then, I've change the electronics set up a little bit and ...
- 41
-1
votes
1
answer
1k
views
Converting a 50MHz clock to 1Hz to blink an LED
My board uses a 50MHz clock which I am trying to convert to 1Hz so that I can blink an LED.
The way my code works is it counts up to 25,000,000 and then the divided clock signal switches from 0 to 1. ...
- 67
0
votes
2
answers
248
views
Is it possible to generate a sine wave formula using values from an array?
so we have an Arduino code which includes an array, is it possible to make those array disappear [in the code] and instead formulate a sine wave formula for those [array] to make the output in sine ...
- 23
0
votes
2
answers
2k
views
How can we multiply two 2-digit BCD numbers?
I am designing a PIC18F4520 microcontroller based system. By using this system I want to multiply two numbers. Each number is a 2-digit BCD number. Such as 73*27 and I want to see results as 2715 at a ...
- 31
0
votes
1
answer
71
views
Velilog HDL(Logic cricuit)
I want to design this circuit using the Velilog HDL.
However, I can't make a feedback part well.
Here is my code about it!
...
- 1
1
vote
2
answers
686
views
0
votes
0
answers
50
views
output voltage of boost converter
I built a boost converter and I can't see on the oscilloscope the 12V in the output and the real frequency that I defined (70kHz.)
What should I do?
This is my circuit, and below that is what I see ...
0
votes
1
answer
74
views
STM32 Nucleo board, SD card displaying symbols instead of numbers
Devices: STM32F4
The SD is working and the data is saving on the SD, but the problem is that the integers are displayed as symbols in this SD. So I think that the problem is that the function I used ...
- 3
-2
votes
2
answers
104
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I need to make a connection between two devices, who can help me? [closed]
During the Corona era, it's not always easy to keep distance from each other. However, you still have to stay a metre and a half away from each other.
This is why I want to create a device that hangs ...
0
votes
1
answer
608
views
Basic code using millis() function to calculate time elapsed
I do not know why the simple code below does not work. It may have to do with how unsigned long behaves?
Code simply determines if elapsed time has exceeded Snooze_Time which is 10000 by comparing ...
- 97
0
votes
2
answers
201
views
Firmware coding - applicable standards
I would like to know if there are any applicable standards when coding microcontroller firmware (ARM) in order to achieve a specific quality level.
In my case, I would like to code firmware for a ...
- 139
2
votes
2
answers
241
views
Step up converter
I built a circuit of boost converter and my input voltages is 6-9 V. I want to get output at the converter 9-12 V. My problem is that I get over 40 V and I do not know why, in the code do I have to ...
0
votes
2
answers
278
views
Read code from ESP12F / ESP8266
Is it possible to read the code that is programmed on an ESP12F/ESP8266? I don't even know which programming language is used.
This is a technical sheet for the ESP12F
http://wiki.ai-thinker.com/...
- 155
1
vote
1
answer
105
views
Why are Global Struct Variables not visible in Loop and in Function?
I created variables in a struct above void setup() so they would be Global.
Prior to this the code ran.
In Loop and in the one function I get error the variables were not declared in this scope.
...
- 97