Welcome to the final article in our ESP32 firmware and OTA update management series. Today, we’ll explore using an FTP client to update the firmware and filesystem on an ESP32 device. Join us as we delve into this last technique, equipping you with valuable insights for managing updates on your ESP32 projects.
Firmware is a specific class of computer software that provides the low-level control for a device’s specific hardware. Firmware, such as the BIOS of a personal computer, may contain basic functions of a device, and may provide hardware abstraction services to higher-level software such as operating systems. For less complex devices, firmware may act as the device’s complete operating system, performing all control, monitoring and data manipulation functions. Typical examples of devices containing firmware are embedded systems, home and personal-use appliances, computers, and computer peripherals.
In this article, we explore a non-standard but effective method for updating ESP32 firmware and filesystem using an SD card. We’ll discuss the advantages, disadvantages, and provide a step-by-step guide for implementing this technique, building on knowledge from previous articles in our firmware management series.
We are going to continue exploring OTA updates. In this article, we delve into secure self OTA updates for ESP32 devices using HTTPS (SSL/TLS) with trusted self-signed certificates. Learn how to generate certificates, set up the ESP32, and configure the update server for enhanced security and efficiency in your IoT projects.
In this article, we’ll explore an efficient method for implementing self Over-the-Air (OTA) firmware updates for the ESP32 microcontroller, complete with version checking. This approach enables IoT devices to automatically download and install the latest updates from a server, ensuring a resilient and adaptable IoT ecosystem without requiring manual intervention.
This article discusses how the ESP32 can perform self-OTA updates of its firmware from a server, allowing you to remotely update the firmware of an ESP32-based device without having to physically access the device. To do this, you need to set up a server that hosts the new firmware image and add OTA support to your ESP32 firmware. By implementing self-OTA updates, you can ensure your devices are running the latest firmware without having to physically access them.
In this article, we will explore how to perform OTA updates on the ESP32 using a web browser and HTTPS protocol with a self-signed certificate. HTTPS provides a secure way to transfer data over the internet and is essential for any OTA update process that involves sensitive information. A self-signed certificate can be used to provide encryption and authentication without the need for a third-party certificate authority, making it a cost-effective solution for small-scale projects. By the end of this article, you will have a working OTA update process for your ESP32 project that uses HTTPS protocol and a self-signed certificate.
In this article series, we will explore how to perform an OTA update on the ESP32 microcontroller using a web browser with and without basic authentication. We will cover firmware update, filesystem update, and authentication, providing practical examples and code snippets along the way.
One of the most important features of the ESP32 is the ability to perform over-the-air (OTA) updates, which allows developers to remotely update the firmware of the device without the need for physical access.
In this article, we will explore how to perform an OTA update on an ESP32 using the Arduino IDE. We will cover the entire process, including updating the filesystem and firmware, as well as securing the OTA update with a password.
The ESP32 boasts a crucial capability that streamlines the sharing of firmware, which most manufacturers widely utilize. This capability involves creating a pre-compiled binary file containing the sketch portion (or filesystem). In this article, we will create a binary file for the filesystem and proceed to flash the ESP32 using the Espressif Download Tool.