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Newest 'spi' Questions - Arduino Stack Exchange
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Learn more about TeamsQuestions tagged [spi]
Serial Peripheral Interface. Allows full-duplex serial communication from a master device to one or more slave devices arranged on a bus. Sometimes referred to as a 4-wire bus.
510 questions
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0
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0
answers
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How to setup the configuration (User_Setup) of TFT_eSPI for ILI9225 176x220 TFT with esp32?
I was trying to interface my 2 inch 176x220 reslolution tft display having a ILI9225 driver with esp32 using TFT_eSPI library.This is the User_Setup file of the TFT_eSPI library, i edited this to ...
0
votes
1
answer
400
views
Set SPI Mode on Arduino Uno R4
I am switching a code from Arduino Uno R3 to Arduino Uno R4 Wifi due to the limitation of RAM spaces on R3. I use a thermocouple shield and SD Card read/write shield with the project, which requires ...
1
vote
0
answers
66
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SB Components Micro RP2040 and ST7789 2.4 TFT LCD SPI display not working together using any library
I have a Micro RP2040 board from SB Components. Link to this product
With this I also have a 2.4 inch SPI TFT LCD screen with an ST7789 controller Link to the screen, it's on that page just scroll ...
0
votes
1
answer
273
views
P10 LED Display Character Overlaying with DMD library
Hi, I am using p10 Led display and trying to make digital clock. it works fine but after 2 or more weeks later without any switch off there is a overlaying start on characters. why this happening I ...
-1
votes
1
answer
174
views
How do I fix display showing random pixels on ST7789V2 LCD Module?
Problem Description:
I’m trying to interface a Waveshare 1.69-inch LCD module (ST7789V2 driver, 240x280 resolution) with an Arduino UNO board. I’ve connected all the necessary ports as per the ...
0
votes
1
answer
277
views
Change MKR Zero SD SPI Pins
I have been trying to learn more about using the ATSAMD21 MCU with Arduino. I designed and assembled a bare bones breakout board and have successfully flashed the MKR Zero bootloader and uploaded ...
0
votes
0
answers
42
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Custom PCB based on the Adafruit PyBadge with Multiple SPI interfaces for SD Card and other devices
I'm currently working on a tracking device with multiple sensors on a custom PCB. The device uses Narrowband LTE, SPI flash, and an SD card, all managed by an ATSAMD51J19A microcontroller. To ...
2
votes
1
answer
121
views
L9780 and SPI communication
I'm working on a program to interface with a development board I spun for an L9780 - wideband oxygen controller IC. At this point, I'm trying to get a consistent "status" read back but ...
3
votes
1
answer
114
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Connecting 3x 0.91Oleds (Using a TCA9548A 8-channel multiplex) and 1 1.51 Inch Transperant SPI OLED
As the title suggests, I have an Arduino Nano connected to a multiplex (which is connected to 3x 0.91 OLEDs) and an 1.51 inch OLED connected through an SPI.
The problem is that they just refuse to ...
0
votes
0
answers
711
views
ESP-C3 Super mini MAX98357A and SD Card Reader together
After a lot of research and minimum results about pin mapping and particular specific configurations for SPI and I2S on ESP-C3, i about to give up on this.
I have recently bought ESP32-C3 Supermini ...
0
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0
answers
109
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0
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0
answers
134
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Data constant and always zero from the ADXL345 accelerometer with ESP32 using SPI
I am trying to get data from an ADXL345 accelerometer using an ESP32 via SPI communication. I have configured my code following the ADXL345_WE library specifications and have verified the hardware ...
1
vote
0
answers
129
views
Deciphering AD7730 outputs
I am currently working with a AD7730 chip for analog-digital conversion. The chip is programmable, and I have been pulling code from GitHub as well as other links.
I am unfamiliar with SPI (the ...
1
vote
0
answers
175
views
Issue with multiple RC522s connected to Arduino Uno
THIS IS NOT A DUPLICATE QUESTION. My main problem is that whenever I
attach the third RC522, the whole system becomes unstable. When I
attach the fourth, suddenly one or two of the modules stop ...
2
votes
2
answers
1k
views
ESP32 SPI Mutual Communication
I have two ESP32 cards. I want to set one of these cards as Master and the other as Slave and communicate via SPI. I have done this before on Arduino Uno, but I cannot do this on ESP32.
Below are my ...
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