Questions tagged [driver]

Questions about software drivers for external peripherals as well as drivers for the system components. This is NOT for questions about "driver boards", e.g., for motors; use 'dc-motor' instead.

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SPI Chip Select (CS) Control?

I am working with spidev on my RPi4 project and I have noticed that there is a significant delay caused by the CS signal. I am using the hardware CS pin (CE0, pin header 24) to drive the CS signal for ...
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22 views

Raspberrry Pico and ODBC

We are looking for an ODBC driver for Raspberry Pico W. Is there one at all?
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Real TTY Driver installation - Moxa 5110 not able to connect /dev/ttyr01: Input/output error

trying to get my Moxa Nport 5110 to work with the RPI4. Currently Using: Raspbian GNU/Linux 10 (buster) installed moxa-real-tty-drivers-for-linux-kernel-5.x-v5.1 added some tty ports automatically (...
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Help debugging random USB Wifi disconnect with ALFA AWUS036ACM (chipset MT7612U)

To improve the Wifi on my RPi4, I bought an ALFA AWUS036ACM USB Wifi dongle, based on very positive compatibility reviews… After a few weird missing driver file issues (that might be due to my running ...
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"Make" command gave error while trying to compile AP drivers for MT7601U on raspberry pi 4

i have a wifi adapter which has MT7601U chipset in it, but the driver in linux kernel for this chipset doesn't support AP mode, so i was trying to install the AP driver from this github page: https://...
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36 views

Using Pi to check mipi clk?

I'm using the Pi 4 compute module to connect to a IMX219 camera using the mipi interface. Well, actually putting the mipi through a FPGA interface first but the basic question is: Can I use the Pi to ...
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45 views

Identify LCD and driver and touch pannel

I'm going through my box of bits to start a new project and having trouble with an LCD screen. When connected to the pi4 it doesn't fit the screen. Thing is the no signal screen also doesn't fit when ...
0 votes
1 answer
103 views

'/dev/v4l-subdev1' node not created anymore for 16 MP Arducam with autofocus (IMX519 based) with Rpi 4B

/dev/v4l-subdev0 and /dev/v4l-subdev1 nodes used to be created before when booting up the Rpi with the ArduCam plugged in (via MIPI CSI-2 port). Now only /dev/v4l-subdev0 shows up, and I'm not sure ...
1 vote
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59 views

On Raspberry Pi 4 with Ubuntu 22.04 don't work ioctl

I have Raspberry Pi 4 (aarch64 Cortex-A72) with OS Ubuntu 22.04 LTS 64-bit installed. I try read frame from webcam. When I run this code: if (ioctl(fd, VIDIOC_DQBUF, &buf) < 0) { std::cout &...
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Wifi Direct: Intermittent Issue with Wifi Device

I'm working on making a "Wifi Direct" RPi device (Raspberry Pi 4). Generally, if I run wpa_cli p2p_group_add, it creates the device p2p-wlan0-0 which shows up in ifconfig. However, about 1 ...
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107 views

White screen on a LCD screen after downloading driver

I went through installing the drive and setting it up and it worked but after a few months of not using it, the screen only showed white. I tried reinstalling it (Downloading the driver, extracting ...
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spi driver works on pi 3 and pi 4, but not on pi cm4

I have a spi driver for an nrc7292. When I load it on a pi3 or 4 it works every time, but when I load it on a cm4 it only loads correctly about half the time. What could possibly be different? Once ...
1 vote
2 answers
125 views

Having trouble with my Nema 17 stepper motor and TB6600 Driver, I am using a 12 V adaptor

I have attached an image of my setup. Code I am using is below import RPi.GPIO as GPIO from time import sleep # Direction pin from controller DIR = 10 # Step pin from controller STEP = 8 # 0/1 used ...
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46 views

White Screen on a touch display

I went through installing the drive and setting it up and it worked but after a few months of not using it, the screen only showed white. I tried reinstalling it (Downloading the driver, extracting ...
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67 views

spi driver fails to load sometimes

I am getting an error when I try to load a driver for a spi device, but only about 50% of the time. I was hoping all I would have to do is hook up the devices reset pin, but I'm not sure that does ...
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33 views

Installing Uctronics LCD35 software

Does anybody have experience with the Uctronics B0106 LCD 3.5" Display? I have made several attempts to install the driver software, with varying results. But now I'm stuck. I am following these ...
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1 vote
1 answer
4k views

Where's the windows 10 driver for the Raspberry Pi Pico?

I have a brand new Raspberry Pi Pico. And when I connect it to my Windows 10 PC i get a new device with missing drivers. Guess what: pressing "Update Driver..." is not very helpfull here. I ...
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Help How to download drivers for a Belkin Wireless G Zydas firmware

I need help on how to download drivers for a Belkin Wireless G Zydas firmware. I have no idea how to. Thanks
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2 answers
80 views

How to manage with raspberry pi two L298N H-bridge drivers

I connected to my Raspberry pi 3b+ two L298N H-bridge drivers and 4 motor (two for each driver) and i tried the code below: Assumption: I purposely used this script because I wanted to test the ...
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141 views

Installing Waveshare SIM7600E-H driver

I bought a Waveshare SIM7600E-H module for my raspberry, following the guide I connected the USB port to my computer and installed the windows drivers after which the hat serial ports were all ...
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367 views

Setting up a path for chromedriver with selenium

I'm very new to Raspberry Pi and Python and installed version 98 of the Chrome browser to my Raspberry pi and set up some this code to make an attempt at opening the Chrome browser in full screen mode....
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What's the proper ili9341 driver for raspberry 4b ubuntu 20.04 system?

Newly purchased 2.4 lcd,but my system is not origin raspberry os. As to ubuntu 20.04,what's the proper ili9341 driver for raspberry 4b?
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Camera driver, updated or removed and now isn't working

My camera was working fine, but now it isn't being recognized anymore. I tried to check if it was enabled on the Raspberry Configuration Interface tab, but the camera option isn't showing anymore. On ...
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375 views

TP-link WN725N / RT8188eu wifi dongle on Pi Desktop OS (NOT on Raspberry Pi hardware)

There's lots of great solutions out there (and here on StackOverflow) for this on Pi hardware but I'm trying to make this dongle work on a PC running Pi OS, which totally foxes the various build ...
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0 votes
1 answer
107 views

Why did my Raspberry Pi 4 stop playing sound?

Two updates ago, my Pi 4 just stopped playing sound and I tried doing another update/upgrade combo and still nothing. Could this be a corrupted sound driver? How can I fix this? I purchased the Pi 4 ...
0 votes
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128 views

How to Install Canon LBP6000 Printer Driver on QEMU?

Canon Printers and CUPS: ARM drivers availabile? Platform: Raspbian Stretch I tried the link above but couldn't get it to work.In the driver guide it says I need to install some packages. # yum ...
2 votes
0 answers
341 views

Does V4L2 driver support Raw Bayer capture with HQ camera?

I was under impression that current V4L2 driver supports raw capture, but: pi@raspberrypi:~ $ v4l2-ctl --list-formats ioctl: VIDIOC_ENUM_FMT Type: Video Capture [0]: 'YU12' (Planar YUV 4:2:0) ...
2 votes
1 answer
71 views

Installing Edimax 7611 Wifi Dongle?

I have an Edimax 7611 wifi dongle I'm trying to install. All the instructions I've found seem to require an existing internet connection to download updates and drivers. Is there a way to put the ...
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43 views

Driver corrupts OS

I've been working on a PI project, I am using Waveshare 7" touchscreen, now I need to download driver to enable touchscreen, I tried downloading it from their website: https://www.waveshare.com/...
1 vote
1 answer
459 views

Enable ENC28J60 on Raspberry Pi 4 SPI1 CE1

I have a Raspberry Pi model 4B V1.4 running: Linux raspberrypi 5.10.42-v7l+ #1422 SMP Tue Jun 8 13:03:05 BST 2021 armv7l GNU/Linux I want to connect an ENC28J60 spi ethernet adapter on spi1. Using ...
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1 vote
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195 views

(RPi4) AHD to CSI-2 and ENOSPC / PiCameraMMALError: Failed to enable connection: Out of resources

I have a fun one - I'm trying to get an analogue camera input (AHD using a normal BNC connector) over a CSI-2 cable/bus (standard RPi one, not the dual-lane Google ones), and be usable through the CSI ...
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1 vote
1 answer
176 views

Connecting Multiple Big Stepper Motors to RPi

I am fairly new to using stepper motors and RPis, so have some potentially naive questions. Firstly, I am using two NEMA 34 stepper motors and planning to connect them with DM860T drivers. However, I ...
4 votes
1 answer
615 views

Is there a package or library for controlling the DS3231 on the Raspberry Pi

I've just obtained a DS3231 real time clock (RTC), and added it to my RPi 3b. It seems to work as far as keeping time, but I wanted more. I'd like to be able to set alarms to trigger the INT/SQW pin ...
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3 votes
0 answers
223 views

How to write a Kernel module using SPI properly?

I have no experience writing kernel modules. I build some examples with gpio interrupts and they worked prety well. Now I want to use SPI from my kernel module and I will explain why I need it. I am ...
1 vote
1 answer
406 views

How is spidev and the spi-bcm2835 module related?

Removing either one deletes the SPI devices from /dev/ What's the difference between the two modules and how do they relate?
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2 votes
1 answer
175 views

What is the impact of setting gpu_mem=16 using the vc4 kms driver? (compute module 3+)

If i understood correctly, the kms driver (vc4-kms-v3d) uses a dynamic memory split which can be set via the 'cma' parameter in cmdline.txt This means the less memory i assign to the gpu with 'gpu_mem'...
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1 vote
1 answer
1k views

Rastertospl failed samsung printer

I have connected my Samsung M2020 Series printer connected to RPI with CUPS. The printer is set up and I installed proper drivers for this printer on the RPI. CUPS recognised it and I selected it. The ...
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0 votes
1 answer
118 views

Disable CH340 port auto reset on error

I want to use raspberry pi 4 to read some values from Mitsubishi FX1n PLC over programing port(RS232) and I use RS232-USB adapter with CH340 chip. The problem is that I have to send ASCII REQ(05 in ...
1 vote
1 answer
257 views

Most compatible/supported I2C based touchscreen to emulate?

Without going into boring details, I need to get a touchscreen input into a Raspberry Pi which will be "faked" by a microcontroller - so the micro is reading some input and translating it to ...
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0 votes
1 answer
257 views

hostapd failing to respond to DHCP discover nl80211: Frame command failed:

I'm trying to set up a AP by using hostapd and I was unable to even after following the tutorial notes step by step: After running hostapd with dnsmasq The AP gets advertised on the air, but ...
2 votes
1 answer
717 views

How can I write or read from a specific GPIO pin in from a kernel-module?

I'm using a Raspberry Pi 4 with standard 32 bit Raspbian. I'm trying to write a driver in c that writes AT commands to some GPIO pins and reads the response from other pins. For that I want to use the ...
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1 answer
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Twin touchscreens on Pi 3/4

I'm looking at a project where I will need to drive two separate displays from a Pi, both of which are touchscreen - specifically GT911 type on a separate I2C connection. This will almost certainly be ...
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0 answers
165 views

Userspace and Kernel space graphics drivers for the pi 4

I recently bought a raspberry pi 4 to aid in my computer architecture studies. Also, one of my study projects is to build a kiosk application using buildroot (not raspbien). I have taken some time to ...
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1 vote
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579 views

HDMI-to-( TTL or LVDS ) decoder/driver on a custom PCB [closed]

I am working on a custom-made handheld PCB based around a PI Compute Module and one of the hardest steps I have found is how to include an HDMI-to-(50pin-TTL or LVDS) driver on my PCB to run my LCD ...
0 votes
1 answer
2k views

Disable USB driver on RPi Zero W

I am using a Raspberry Pi Zero W running Raspberry Pi OS (32-bit) Lite (Aug 2020). This is an IoT project where, I have a USB modem that makes my internet connection. When the modem is powered on it ...
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156 views

How to install Generic / Text Only printer on Raspberry pi 4 with Windows 10

On windows 10 for Raspberry pi (ARM64), all basic printer drivers are present (microsoft, samsung), but "Generic" section isn't present! I need to install a thermal receipt printer (exactly ...
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3 votes
1 answer
598 views

Editing heartbeat LED trigger

I am trying to edit the timer of heartbeat trigger on RPi Zero. I have found original .c file of kernel driver here https://github.com/raspberrypi/linux/blob/rpi-5.4.y/drivers/leds/trigger/ledtrig-...
2 votes
1 answer
1k views

Raspberry Pi 4 hung on boot while powered USB hub is plugged in

I've got a powered USB hub with an ethernet port connected to my Pi. When the Pi boots with it plugged, the boot process hangs until I unplug it. This seemingly includes the clock, as /var/log/syslog ...
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0 answers
45 views

Screen Software reset on usage of apt repositories

I'm using the waveshare 3.5 inch touchscreen, it's wiki can be found here 3.5wiki. From the moment I use the apt repository it becomes blank at the next reboot. The raspberry stays responsive (tested ...
-2 votes
1 answer
258 views

How do I connect my 24 pin fpc to dip breakout board to my rpi zero w?

So I am working on a type of headset and I bought the adafruit 1.3 ips with 24 pin fpc connector and st7789 driver and I'm thinking of using a breakout board to do it. What I don't know is the pin out ...

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