Running Go HTTP server on Teensy 4.1
The article explains how to run a Go HTTP server on the Teensy 4.1 board with the ESP-01S Wi-Fi module, detailing setup, hardware connections, and programming for network connectivity.
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The article discusses how to run a Go HTTP server on the Teensy 4.1 development board, utilizing the ESP-01S Wi-Fi module for network connectivity. Historically, the Go language's networking capabilities were limited in embedded systems due to dependencies on the underlying operating system. However, with the introduction of the espat package, developers can now interface with the ESP-AT firmware using a UART interface, allowing standard Go networking functions to be used. The article provides a step-by-step guide on setting up the development environment, including creating a simple LED blinking program to test the setup. It details the necessary hardware connections, including power considerations for the ESP-01S module, and explains how to program the Teensy board using the Teensy Loader. The tutorial progresses to demonstrate how to scan for nearby Wi-Fi networks and connect to one using user-provided credentials. Finally, it introduces a simple TCP client program that sends an HTTP request to a server, showcasing the integration of Go networking capabilities in an embedded environment.
- The Go language now supports networking in embedded systems using the espat package.
- The Teensy 4.1 board and ESP-01S module are used for the implementation.
- A simple LED blinking program is used to test the development environment.
- The tutorial includes steps for connecting to Wi-Fi and sending HTTP requests.
- Power considerations for the ESP-01S module are discussed, including the use of decoupling capacitors.
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