Loading... Please wait...
Blog
Recent Posts
ESP32 Processor: Internal SJA 100 CAN Bus Controller
This post is an excerpt from our application note Controller Area Network (CAN) Development with ESP32.The ESP32 integrates a CAN Bus controller compatible with the NXP SJA1000. Thus, it is CAN 2.0B (ISO 11898, a.k.a. Classical CAN) specification-compliant.As with the SJA1000, the ESP32 CAN Bus controller provides only the data link layer and the physical layer [...]
ESP32 Processor: Adding a CAN Bus Transceiver
This post is an excerpt from our application note Controller Area Network (CAN) Development with ESP32.As a quick reference, I want to address the need for a CAN transceiver. As mentioned in the previous chapter, the ESP32 has an internal CAN Bus controller. However, this doesn't mean you can directly connect it to a network. You [...]
CAN FD (Controller Area Network Flexible Data Rate)
This post is an excerpt from our application note Controller Area Network (CAN) Development with ESP32. CAN FD (Controller Area Network Flexible Data Rate) is an extension of the original CAN bus protocol. It was created to provide increased bandwidth within automotive and industrial networks. It brings application software closer to "real-time" by minimizing delays between instruction [...]
ESP32 Processor with Internal SJA 1000 CAN Bus Controller
This post is an excerpt from our application note Controller Area Network (CAN) Development with ESP32. The ESP32 is a low-cost, low-power system-on-chip microcontroller with integrated WiFi and dual-mode Bluetooth. It employs a Tensilica Xtensa LX6 microprocessor in dual-core and single-core variations. It includes built-in antenna switches, RF balun, power amplifiers, low-noise receive amplifiers, filters, and power [...]
ESP32 Programming - Classical CAN to Bluetooth Gateway
In this post, I will present a CAN to Bluetooth gateway based on the ESP32 processor. The above image shows my test setup using our ESP32 WiFi, Bluetooth Classic, BLE, CAN Bus Module, a CAN-Bus Hub With 7 Ports And DC Power Connection, and the PCAN-USB Pro. As its description implies, the ESP32 module provides all necessary [...]
ESP32: CAN Bus Programming with MCP2515 and MCP2517FD
For good reasons, the ESP32 processor is a prevalent choice for embedded hardware development. Besides considerable memory resources, it provides various hardware features for many applications, most prominently the Internet of Things (IoT). All that comes with more than reasonable price tags, specifically when you use one of the multiple ESP32 development modules. And since [...]
Discover IoT Development with ESP32 to Create Smart Devices
The ESP32 is a low-cost, low-power SoC (System on Chip) microcontroller with integrated WiFi and dual-mode Bluetooth. It has shipped over 100 million units as of 2018 and powers many WiFi devices on the market. This book supplies end-to-end coverage of building an IoT system from the ground up to secure data communication techniques from [...]
ESP32: Isolated CAN Bus Repeater and Baud Rate Converter
With this application, I am adding yet another example to the vast CAN library we developed over the years. The use of the Dual Isolated CAN Bus HAT with the ESP32 opens the door to a number of possible applications. The development of a CAN repeater and/or Baud Rate Converter came to mind first, because the [...]
ESP32 UART0, UART1, UART2 Access Using the Arduino IDE
In the following, I am using the ESP32 WROOM Devkit for this tutorial in combination with the Arduino IDE. For more information on programming the ESP32 using the Arduino IDE, please refer to “Getting started with ESP32 development board and Arduino.” The Arduino IDE uses the Serial class (assigned to UART0) to access the USB port [...]
Do NOT Install ESP32 by Espressif Systems Version 3.0-alpha1
Today, I experienced a little scare. As usual, I opened the Arduino IDE on my Windows-11 machine, and as a first action, I allowed the recommended updates. Not suspecting any significant problems, I added some code and compiled it, only to end up with multiple error messages. I found nothing wrong with the code I had [...]