Questions tagged [read]
The read tag has no usage guidance.
25
questions
0
votes
1
answer
231
views
Read a register using I2C, gets HAL_ERROR message
I am trying to read from a register in MAX17320 using I2C protocol but get always HAL_Error message. I have the chip MAX17320 and a microcontroller STM32F105, when I try to read from the register ...
- 1
8
votes
4
answers
858
views
How to follow the signal when reading the schematic? [closed]
I am learning how to read schematics.
Are there any guidelines or good practice on reading schematics?
It's my understanding that schematics are read left-to-right and that is how one should follow ...
- 399
0
votes
2
answers
106
views
Serial reading returns undefined characters
I am trying to communicate using LoRa modules with an ESP32. I can easly communicate with two LoRa modules, but if I want to learn the sender address, the Arduino returns an undefined character. I am ...
- 1,049
0
votes
0
answers
101
views
Analog pins showing incorrect data. Only from 0 to 255
A month ago, I connected a joystick with an Arduino Uno. VCC with Arduino 5v, GND with ground and Y axis with analog. I tried all, but the error persist with all 6.
A month ago, in the serial monitor ...
- 41
1
vote
1
answer
67
views
SD card module with ESP32
I'm using an SD card module with ESP32. My plan is to store configurations such as SSID and passwords.
I tried the function with a text file which contains the text "Hello" and for ...
- 11
1
vote
1
answer
2k
views
Read data from a register in C-code [closed]
I am a beginner and learning by myself.
I need your help to start the third implementation in my life in VIVADO ( "Hello world" and "led")
I will implement SPI connection with DMA, ...
- 15
0
votes
1
answer
2k
views
ESP32 - Read multiple analog inputs
I need to read multiple analog inputs as fast as possible on a ESP32. With as fast as possible, i mean that ideally all inputs are read simultaneously.
Currently I simply read them one after the other ...
- 279
1
vote
2
answers
88
views
Moving AI IP into new FPGA. Is the trigger for reading ROM an address change?
I'm confused about the trigger for reading ROM.
I want to read one of 4 k bytes but it appears the clock is free running and may be continuing to read the same address while I'm processing the byte I ...
- 13
0
votes
3
answers
759
views
STM32 ADC read methods for high voltages
I want to read input voltage from a solar array for my circuit. That's not a big deal if the voltage is up to 3.6V. The problem is that I am expecting maximum of 15V and obviously I won't be able to ...
- 15
1
vote
0
answers
80
views
i2c : When writing to Slave Read 255 seen on bus
I am using Renesas RH850 controller in which I am writing 48 byte of data to slave device (Ublox IC) over i2c every 100ms and sometimes I can see 255 in between my data transfer which results in ...
1
vote
0
answers
22
views
Recover correct value from unstable memory through read operation
We are given a memory with 32-bit width for each word. it has the length (N - number of rows) which is not relevant for the question. we know that the memory has a problem where at any row, one bit ...
- 1,021
0
votes
2
answers
178
views
Reading sketch from Arduino UNO
I'm new to Arduino and spent shockingly long on an RFID code variant. Unfortunately someone then snuck into my flat and nicked my laptop. The sketch however is still on my Arduino UNO, is there a ...
- 15
0
votes
1
answer
393
views
Read data from 125kHz tag and write into 433MHz remote
At the moment, I am opening the garage door via the 125khz key tag. I purchased a 433mhz remote. Also, I have a tool to read/write data from tags and I have used it in the past to copy key tags.
I ...
- 107
0
votes
1
answer
114
views
Read/Write from microprocessor memory
I have just started to learn how a microprocessor works and I have some questions.
I have read that the way the microprocessor read/writes data is by setting the address on the address bus, then ...
- 15
0
votes
0
answers
50
views
Executing a page read
I am working for a few months on dumping the content of a certain NAND Flash. This is the first time that I am doing this so I needed some time to get a good idea of how this works.
The NAND Flash ...
- 59
0
votes
2
answers
1k
views
How can I transform the code for a read-write register to a read only register in Verilog?
I have the code for read write register here
...
- 1
0
votes
1
answer
264
views
read from uint32_t in flash is zero STM32F1
I am working on an STM32F103RBT6 program and at some point I need to store values in the FLASH.
Writing in Flash is working as a charm, if I parse through the memory of my microcontroller, I see that ...
0
votes
1
answer
266
views
Read the state from an LED in a MCP23017
I read already this 2 questions:
Read state from LED in another circuit
Read the state of a 12v illuminated switch from an Arduino Uno
and I can read the state in a MCP23017 controlled by an ...
- 103
0
votes
1
answer
773
views
Reading from file in every rising edge of the clock in VHDL
Hi I am trying to read data from a file which contains 62500 lines of 12-bit binary numbers in order to instantiate my 2D array(sort of a RAM). However, my problem is that this process happens in one ...
- 177
2
votes
2
answers
825
views
Reading measurements from an oscilloscope. Figuring out rise time
I have this picture (Sorry for the glare):
The two verticle bars are a at 0.5v and b at 4.5v, or at least roughly at this spots. I need to get the rise time from 0.5v to 4.5v, but I don't understand ...
- 279
1
vote
1
answer
817
views
Is it possible to read the memory from a Holtek HT46R064B OTP(!) chip?
I am trying to get data from a Holtek HT46R064B. I know that the Chip is an OTP (One-Time Programmable) Chip. I ask myself if it is possible to read some parts of its memory.
In my case the chip is ...
- 11
1
vote
0
answers
77
views
How to read all memory from damaged CF?
My CF card has been corrupted. I don't know how is that happened. I just using new card (five months old) on EOS 5D Mark II with installed ...
- 111
0
votes
0
answers
560
views
AVR perform Checksum on itself
I would lije to perform a CRC or Checksum for the FLASH memory of my device, an AVR32UC3, this will be performed by blocks, so I'm thinking that the prototype can be:
...
- 67
1
vote
1
answer
851
views
I get the same value, when read via i2c - stm32 + hih6030
I want to use my HIH6030 humidity and temperature sensor with my STM32F4 board, but I have the following problem:
I turn my board on and start debugging. The first time when I try to read out it's ...
- 11
1
vote
1
answer
253
views
Code protection in External flash
I am implementing external code execution for STM32F765VG with NOR flash (8/16 bit). The idea is to execute code from external flash memory. are there any ways to protect my code present in external ...
- 9,171