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nepozs / CC2652 unbricking with Raspberry Pi and OpenOCD.md
Created May 22, 2023 21:58 — forked from tobiasfrejo/CC2652 unbricking with Raspberry Pi and OpenOCD.md

CC2652 unbricking with Raspberry Pi and OpenOCD

I was a bit quick when flashing my generic CC2652R and ended up dowloading and flashing firmware for CC2652P.. Since it was the wrong firmware, the bootloader also didn't work anymore, making me unable to flash the correct firmware with the integrated USB serial programmer.

Luckily the module has a cJTAG debugging interface, that should make it possible to flash directly onto the chip without the bootloader. But I don't have any serial debuggers, so I have had to come up withj my own from various limited information I could find.

Approach

Using OpenOCD we can use a Raspberry Pi as a JTAG debugger. It does not support cJTAG for debugging, so it will instead send a signal to make the CC2652 switch to normal JTAG. We will then have to connect a few additional cables to the TDO and TDI pins for a full 4-pin JTAG connection.

@tobiasfrejo
tobiasfrejo / CC2652 unbricking with Raspberry Pi and OpenOCD.md
Last active August 27, 2024 22:38

CC2652 unbricking with Raspberry Pi and OpenOCD

I was a bit quick when flashing my generic CC2652R and ended up dowloading and flashing firmware for CC2652P.. Since it was the wrong firmware, the bootloader also didn't work anymore, making me unable to flash the correct firmware with the integrated USB serial programmer.

Luckily the module has a cJTAG debugging interface, that should make it possible to flash directly onto the chip without the bootloader. But I don't have any serial debuggers, so I have had to come up withj my own from various limited information I could find.

Approach

Using OpenOCD we can use a Raspberry Pi as a JTAG debugger. It does not support cJTAG for debugging, so it will instead send a signal to make the CC2652 switch to normal JTAG. We will then have to connect a few additional cables to the TDO and TDI pins for a full 4-pin JTAG connection.

@rail01
rail01 / Public_Polish_NTP_Servers.md
Last active August 16, 2024 11:14
List of publickly accessible NTP time servers in Poland

Below is the list of publickly accessible NTP time servers located in Poland, along with their hostnames, IP addresses, Stratum levels, AS numbers and contact information.

List consists of trustworthy sources such as government agencies, scientific organizations, ISPs or major infrastructure providers. STRATUM 1 and 2.

If you're looking to use any of those NTP servers in business-critical production environment, please consider obtaining time from a time source directly, e.g. via GPS receiver or caesium atomic clock.

List

Host organization Hostname(s) IPv4 IPv6 STRATUM ASN Contact information
Główny Urząd Miar (Central Office of Measures) tempus1.gum.gov.pl tempus2.gum.gov.pl 194.146.251.100 194.146.251.101 N/A 1 AS50606 time@gum.gov.pl
@RubenKelevra
RubenKelevra / ambient_light.yaml
Last active January 30, 2023 02:29
ESPHome example for an ambient light sensor with some smoothing / throttleling but overall low delay
esphome:
name: $devicename
platform: ESP8266
board: d1_mini
substitutions:
devicename: ambient-light-sensor
friendly_name: "Ambient Light Sensor"
@RubenKelevra
RubenKelevra / Recommended MotionEye Settings
Last active December 30, 2022 22:37
Recommended MotionEye Settings (version 4.3.2 at the time of writing) capturing a large area with walking people with an ESP32-CAM (OV2640)
@sekcompsci
sekcompsci / Comparison Espressif ESP MCUs.md
Last active September 20, 2024 14:09 — forked from fabianoriccardi/Comparison Espressif ESP MCUs.md
Comparison chips (SoCs) table for ESP8266/ESP32/ESP32-S2/ESP32-S3/ESP32-C3/ESP32-C6. Forked from @fabianoriccardi

Comparison chips (SoCs) table for ESP8266/ESP32/ESP32-S2/ESP32-S3/ESP32-C3/ESP32-C6

A minimal table to compare the Espressif's MCU families.

ESP8266 ESP32 ESP32-S2 ESP32-S3 ESP32-C3 ESP32-C6
Announcement Date 2014, August 2016, September 2019, September 2020, December
@enegaard
enegaard / hassos-rpi-camera-howto.md
Last active July 24, 2024 16:58
Getting the Raspberry Pi Camera to Work on HASSOS

Getting the Raspberry Pi Camera to Work on HASSOS

Enabling the Raspberry Pi camera on HASSOS installations is unfortunately not as simple as connecting the camera and configuring Home Assistant as described at https://www.home-assistant.io/integrations/rpi_camera.

For the camera to work at all, an alternate firmware needs to be loaded when the Raspberry Pi boots. On Raspberry Pi OS (and many others), the alternate firmware is included with the OS installation image, and switching to the alternate firmware is accomplished by running raspi-config and selecting "Enable Camera" from the menu. HASSOS does not include either the alternate firmware or the raspi-config program, so all of the steps need to be done manually.

The steps below attempt to describe the steps that need to be performed. They have worked for me on a Raspberry Pi 3B+ running HASSOS 4.11 through 4.15. If you have a different setup your mileage may vary (but hopefully you'll get enough hints from the below to get it working).

As of HASSOS 6

@mutin-sa
mutin-sa / Top_Public_Time_Servers.md
Last active September 20, 2024 20:05
List of Top Public Time Servers

Google Public NTP [AS15169]:

time.google.com

time1.google.com

time2.google.com

time3.google.com