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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28 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 ...
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50 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 ...
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24 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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27 views

OV9281 module drivers

I was looking at working with the OV9281 on my pi and noticed that there are at least two OV9281 modules available. One made by Arducam which has the driver here. Another is made by VC which has its ...
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0answers
64 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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1answer
89 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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1answer
37 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 ...
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1answer
39 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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1answer
58 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 ...
1
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1answer
107 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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26 views

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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71 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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26 views

USB detection problem after switching from raspbian stretch to buster

I have a device constructing from a raspberry pi 3 B and an AVR based usb device. The interconnection of these components is depicted in this picture. When RPI is on, data lines of keyboard will be ...
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44 views

Emergency mode after automatically mount usb driver

I try to mount a USB drive automatically on my PI 3B+, i following the instruction on site « How to format and mount a USB drive on Raspberry Pi? » by Patrick I past in the /etc/fstab the partuuid of ...
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244 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 ...
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1answer
528 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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43 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 ...
3
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1answer
268 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-...
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1answer
404 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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41 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 ...
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1answer
142 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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1answer
119 views

Driver for HelTec E-Ink display

I was given this SPI e-ink / e-paper display from HelTec and am trying to make it work with RPi. Apparently there’s a driver for Arduino but I would very much prefer to connect it directly to RPi and ...
1
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1answer
41 views

WiFi dongle works on raspberry pi 4 but when i put sd card and wifi dongle with PiZero it does not show up in ifconfig?

I am trying to plug a USB wifi adaptor to raspberry pi zero and I got driver problem so I removed the sd card and usb wifi adaptor and put it on a raspberry pi 4 and installed the drivers and when I ...
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0answers
33 views

Consequences of the first low-level GPU driver for the Broadcom Videocore IV GPU

3 days ago, Martin Thomas announced on twitter the first low-level GPU driver for the Broadcom Videocore IV GPU. What exactly is a low-level GPU driver, is it the equivalent of a firmware? And most ...
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28 views

DTOverlay for Focaltech ft6336c touchscreen

I have a touchscreen which uses the ft6336c driver for the touch (the video is sorted via a DPI interface). I have found that there is a kernel driver, edt-ft5x06.ko but I can't find an overlay. Does ...
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2answers
5k views

Issues installing RTL8812BU WiFi driver on Raspberry Pi 4 B

Recently, I bought a USB3 WiFi adapter with the RTL8812BU chip (Supports Linux). I have spent 5 hours so far trying to install the Linux driver for the chip on my Raspberry Pi 4. Apparently, I am not ...
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2answers
122 views

How do I know that a Dual-Band USB WiFi dongle will work on Raspbian or other Linux distrobution?

How do I know if a Dual band USB WiFi dongle will work on a Raspberry Pi running Linux? I know that Linux must have a driver that supports the wifi chipset used in the dongle. But with the number of ...
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0answers
14 views

Which one is sensor from IIO?

I am looking for list of sensors from the kernel drivers. I am not sure which one is sensor and which one is not. Are all of them sensors? If not then how can I get those I mean is there any API ...
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1answer
50 views

How I can identify and set a needed display module which was missing on boot time?

Summarizing the problem Can't identify a needed display module which is loaded within the initramfs on boot time. Providing details and any research After fixing the problem on the surface using ...
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1answer
187 views

edt_ft5x06 touchscreen probe failed with code -121

I am trying to get ER-TFTM070_5 display with capacitive touch screen to work. I hae gotten as far as getting the screen it self to work. Now I am facing a challenge to get the touch screen digitiser ...
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0answers
31 views

Problem in initiating i2c driver module for bmp180 i2c based sensor at kernel level

For leaning purpose i am writing a i2c client kernel module for bmp180 pressure sensor. My kernel code is -> #include <linux/version.h> #include <linux/module.h> #include <linux/init....
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1answer
1k views

Raspberry Pi 4 doesn't show a wireless interface - what drivers are required?

I have a raspberry pi 4 running Raspbian Buster. I'll be the first to admit this particular instalation is non-standard. It's been upgraded a version or two and was definitely active on my pi-3 if ...
2
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1answer
134 views

where can I get the driver of imx219

I'm building kernel(xilinx) and rootfs(debain10) for Avnet96v2 board which has connetted a imx219 via mipi adapter, where can I get newest official driver for the camera, if it is existing. By the ...
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3answers
8k views

Ubuntu 19.10: Enabling and using Raspberry Pi Camera Module v2.1

I have installed Ubuntu 19.10 64-bit on my raspberry pi4 with 1gb ram. I know raspbian would be the better choice, but I have to use Ubuntu for some other reasons. Moreover I know that Ubuntu Mate ...
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1answer
217 views

Who has Docker working (pi 4b)? What OS did you use?

First off I am running berryboot on the sd of my raspberry pi 4b so I can load/run raspbian desktop OS off a 480gb SSD. I hate not have running out of storage ever (this works fine). Issues: Docker ...
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2answers
650 views

Berryboot, raspbian, docker, SSD, aufs vs overlay2 storage drivers, nnc1: timeout waiting for hardware interrupt, pi 4b

Hi my goal is to step up my pi 4b with berryboot loading the OS onto a SSD where I can start running docker to become better familiar with it. Then use pi-hole and pivpn and whatever else might be ...
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0answers
54 views

Raspberry Pi 3 and DLink N300 not working

I'm trying to get an additional wifi working on my raspberry pi 3. uname -a Linux raspberrypi 4.9.35-v7+ #1014 SMP Fri Jun 30 14:47:43 BST 2017 armv7l GNU/Linux lsusb Bus 001 Device 006: ID 0bda:...
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133 views

Linux driver support for OV4689

I am working on Camera driver in Linux. We used camera module with OV4689 IC. Below is the link https://www.arducam.com/product/1-3-ov4689-sensor-standalone-camera-module-uc4689-a46/ Any one used ...
3
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1answer
457 views

How to control Odrive with Raspberry pi? [closed]

How to interface Odrive with RPi? didn't find much information on the internet so want to know who has done something like this before. trying to use this code:- import odrive import time import ...
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2answers
208 views

How to lower the power of an RT2870 USB Wlan adapter on Raspbian

I have to lower the range of a wlan adapter to limit the area I'm capturing data in. I'm using the newest version of Raspbian, Pi 4 and the adapter is ralink rt2870 I've tried adjusting the txpower ...
2
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2answers
2k views

WLAN module gone - RPI 4 B+

The WLAN module of my RPI 4 B+ disappeared. At first I thought that the hardware component had blown. How can I properly diagnose whether there is a hardware or software problem? What I have done for ...
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2answers
272 views

Help Patching a driver

I've been tasked with updating a driver on a Raspberry Pi 4 running Raspbian. I'm told I need to apply this patch https://lkml.org/lkml/2019/4/1/1050 in order to get my USB modem to work. When I run ...
3
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3answers
3k views

How to connect ST7789 LCD to SPI Bus 1 as 2nd screen?

I've been trying to get this ST7789 library working with the 240x240 1.3" display on the rpi0w Python lib https://github.com/solinnovay/Python_ST7789 So far I've set all the screen pins to the bcm ...
2
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1answer
484 views

Artillery [ ILI9341 ] 3.2" LCD Touch Screen White Display and Driver Problem

I bought this Artillery 3.2 Inch LCD Touch Screen Display Monitor: https://www.aliexpress.com/item/32553185633.html?spm=a2g0s.9042311.0.0.27424c4dFky0Ok But it only shows a white screen, so I ...
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1answer
242 views

ADF support for scanadf on HP scanner

I have installed SANE and I'm trying to scan pages with the ADF (automatic document feeder) of my HP ScanJet 8250. I found scanadf, but it does not use the ADF for scanning. I now read at the end of ...
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1answer
119 views

Trouble adding a gpio device to the device tree

I'm trying to connect an hx711 to GPIO23 and GPIO24 pins on an RPI3 A+, and I need to specify this in the device tree to have the hx711.ko driver be probed. I've been stuck on this problem for some ...
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0answers
167 views

Raspberry Pi Compute Module 3+ yocto usb ethernet found but not working

I've created my own very basic console distro with yocto and uploaded it to a compute module 3+. Everything works so far, but I am unable to access internet via the connected AXIS AX88179 Gigabit ...
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1answer
2k views

Raspberry Pi 4 Installed screen drivers but disabled my hdmi

I bought a touchscreen and installed the drivers for it, but now my hdmi doesn't work. I am currently running Raspbian on Raspberry Pi 4 model B.And I have a 3.5 inch tft screen.I do not no what ...
3
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1answer
2k views

DS18B20 Temperature Sensor - Rpi 3/4 Driver, Wiring, Detection, and Python Programming

I am new in raspberry pi. In my research project, I would like to monitor ground temperature at 60 points. My team decided to set a monitoring system using raspberry pi. As a preliminary test, I ...
1
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0answers
595 views

Is There Support for 8-bit/4-bit parallel i/o bus (8080 or 6800) for LCD drivers?

I'm looking at using a 240x128 LCD with a UC1608 chip. Are there any packages that support parallel i/o with it? The UC1608 has support industry standard 3-wire, 4-wire serial bus (S9, S8, S8uc) and ...

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