youcef_ali Posts - Answer Overflow

The arrival of small satellites that used LoRa for telemetry data has meant that less technically qualified persons, with a very low budget, can receive their signals. Thanks to TinyGS, there is now an open network of distributed ground stations, and more stations can be built to increase their coverage. The project presented here is a reasonably robust, dust-resistant and waterproof implementation of TinyGS ground station, using commercial off-the-shelf components. Ideal for outdoor usage. https://hackernoon.com/building-a-ground-station-for-lora-satellites

2 replies

DIIDevHeads IoT Integration Server

•Created by youcef_ali on 6/25/2024 in #devheads-feed

How to Write Parallel Multitasking Applications for ESP32 using FreeRTOS & Arduino

The below ublication showd how to take advantage of the multitasking features of FreeRTOS for ESP32 dual-core SoC using your favorite Arduino IDE. Use our examples to learn about mutex, semaphore and critical section code. https://www.circuitstate.com/tutorials/how-to-write-parallel-multitasking-applications-for-esp32-using-freertos-arduino/

2 replies

DIIDevHeads IoT Integration Server

•Created by youcef_ali on 6/25/2024 in #devheads-feed

How to use ESP32 Dual Core with Arduino IDE

The ESP32 comes with 2 Xtensa 32-bit LX6 microprocessors: core 0 and core 1. So, it is dual core, the below links demonstrates how to use the two cores in simple blink app using freertos. https://randomnerdtutorials.com/esp32-dual-core-arduino-ide/

2 replies

DIIDevHeads IoT Integration Server

•Created by youcef_ali on 6/12/2024 in #devheads-feed

What is the role of a bootloader in embedded systems programming?

A bootloader is a crucial piece of software in embedded systems, responsible for preparing the device to run its main application. This involves initializing hardware, setting up memory, and loading the application code from storage (such as flash memory) into RAM. Beyond these basic functions, bootloaders can also handle firmware updates, debugging, and communication with other devices. Types of Bootloaders There are two primary types of bootloaders: primary and secondary. The primary bootloader is the first code that runs when a device powers on or resets, typically stored in read-only memory (ROM) or a protected flash memory area. Its primary functions include basic hardware initialization and then transferring control either to a secondary bootloader or directly to the application code. Secondary bootloaders come into play after the primary bootloader, residing usually in flash memory or external storage. They are responsible for more complex tasks such as loading the application code into RAM, verifying the integrity and digital signatures of the code, and possibly offering options for different firmware versions to the user. Common Bootloaders Bootloaders are integral to many embedded systems, with several well-known examples: U-Boot: A universal bootloader that supports multiple architectures (ARM, MIPS, PowerPC, x86, etc.), various storage devices, communication protocols, and firmware update methods. GRUB: Primarily used for x86 architectures, GRUB supports multiple operating systems, including Linux, Windows, and BSD. Arduino Bootloader: Designed for Arduino boards based on the AVR architecture, it allows users to upload code via serial or USB ports. STM32 Bootloader: Used in STM32 microcontrollers based on ARM Cortex-M architecture, it facilitates firmware uploads through serial, USB, or SPI ports. https://www.linkedin.com/advice/1/what-role-bootloader-embedded-systems-programming-kvtcc

5 replies

DIIDevHeads IoT Integration Server

•Created by youcef_ali on 6/11/2024 in #devheads-feed

EEPROM vs. FRAM vs. eMMC vs. SD Cards

https://www.digikey.com/en/articles/the-fundamentals-of-embedded-memory

2 replies

DIIDevHeads IoT Integration Server

•Created by youcef_ali on 6/10/2024 in #devheads-feed

ESP32 ADC Adjustment

Nice publication about esp32 adc and calibration: https://www.instructables.com/Do-You-Know-About-ESP32-ADC-Adjustment/

2 replies

DIIDevHeads IoT Integration Server

•Created by youcef_ali on 6/6/2024 in #devheads-feed

Differences Between ARMv7 vs ARMv8

Hi This nice post about ARM MPU 7 ET 8. https://iies.in/blog/differences-between-armv7-vs-armv8/

2 replies

DIIDevHeads IoT Integration Server

•Created by youcef_ali on 6/2/2024 in #devheads-feed

Implementation of GPIO via MIO and EMIO in All Programmable SoC (AP SoC) Zynq 7000

The below tutorial provides a brief overview of available input/output peripherals (IOPs) and their relation with multiplexed input/output (MIO) and extended MIO (EMIO) in Zynq 7000. After that, a comprehensive detail of general purpose input/output (GPIO), which is one of the available IOPs in Zynq 7000, and its programming via MIO and EMIO is explained. Lastly, the GPIOs are implemented by making use of Vivado and Zedboard as a software and hardware platform respectively. https://fpgawork.wordpress.com/2018/12/20/implementation-of-gpio-via-mio-and-emio-in-all-programmable-soc-ap-soc-zynq-7000/

2 replies

DIIDevHeads IoT Integration Server

•Created by youcef_ali on 6/1/2024 in #devheads-feed

FreeRTOS : Task Suspend and Resume

This is q good publication on how to use task suspend and resume. https://www.instructables.com/FreeRTOS-With-Arduino-06-Task-Suspend-and-Resume/

2 replies

DIIDevHeads IoT Integration Server

•Created by youcef_ali on 5/27/2024 in #devheads-feed

How to make Sensor Data send directly to a Database via MQTT using Machbase

The below article explain and show how we can write data received from mqtt into databse drielctly. https://medium.com/machbase/about-mqtt-e41b4eba0b4d

2 replies

DIIDevHeads IoT Integration Server

•Created by youcef_ali on 5/23/2024 in #devheads-feed

MQTT Client Message Queueing and Delivery

http://www.steves-internet-guide.com/mqtt-client-message-queue-delivery/

3 replies

DIIDevHeads IoT Integration Server

•Created by youcef_ali on 5/22/2024 in #code-review

data buffering when connectivity is lost

This topic is to share with how you manage your application and how you deal with it in case the connectivity is lost, and what you do when the connection is established ?

7 replies

DIIDevHeads IoT Integration Server

•Created by youcef_ali on 4/24/2024 in #edge-networking

How to Install and Secure the Mosquitto MQTT Messaging Broker on Ubuntu 18.04

https://www.digitalocean.com/community/tutorials/how-to-install-and-secure-the-mosquitto-mqtt-messaging-broker-on-ubuntu-18-04

3 replies

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