Questions tagged [firmware]

Firmware is the code usually stored in flash ROM and contains the instructions for communicating with the other computer hardware.

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Why is OP-TEE for Raspberry Pi3 insecure?

The OP-TEE on Raspberry Pi 3 webpage says, This port of ARM Trusted Firmware and OP-TEE to Raspberry Pi3 IS NOT SECURE! Although the Raspberry Pi3 processor provides ARM TrustZone exception ...
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259 views

What are the vcgencmd measure_clock 26 and 50?

There are 2 clock sources that are not officially (?) listed with a string id available to the vcgencmd measure_clock command. # for i in {0..255}; do vcgencmd measure_clock $i; done | grep -v "=0" ...
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In simultaneous use of SPI0 and DPI Mode 3 interfaces, can SPI0 CS0 be moved to a pin other than 8?

I am attempting to design a device using a Pi Zero which needs to connect to both an ENC18J60 SPI ethernet controller, and a VGA monitor via Mode 3 DPI and the Mincepi Pi Zero pi2vga schematic. While ...
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502 views

Decrease the sensitivity on Capacitive Touch breakout?

I have this capacitive touch sensor: https://learn.adafruit.com/adafruit-capacitive-touch-sensor-breakouts/overview And it is WAY too sensitive for my purpose. I want to have a conductive panel on a ...
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HDMI display output rendered useless on 2 different Raspberry Pi 2

Is there a way to corrupt the firmware in the Raspberry Pi ARM? I cannot understand what has happened to my 2 RPIs and I was never expecting software or the operating system being able to disable the ...
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How deep can a virtual machine like VirtualBox emulate Raspberry Pi?

Currently I have the firmware code for a device running on Raspberry Pi. I want to use a linux computer that I have to test the device out using a virtual machine like Virtual Box (To connect it to ...
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446 views

Is it possible to Flash VideoCore ROM?

If I understand VideoCore IV correctly, it contain a bootrom (and perhaps some other information in the ROM). I understand that the bootrom contain a different instruction set than ARM. I would guess ...
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How to restore backup - Nexmon troubles

I recently installed Nexmon on my Raspberry 3b+ in order to get monitor mode on my wifi-chip. Unfortunately it messed up my Wifi. I can not connect to wifi-routers. I'm a total beginner in Linux and ...