Introduction to the ESP-Prog Board

1. Overview

ESP-Prog is one of Espressif’s development and debugging tools, with functions including automatic

firmware downloading, serial communication, and JTAG online debugging. ESP-Prog's automatic

firmware downloading and serial communication functions are supported on both the ESP8266 and

ESP32 platforms, while the JTAG online debugging is supported only on the ESP32 platform.

ESP-Prog can easily connect to a PC with the use of only one USB cable. Then, the PC can identify the

board's downloading and JTAG interfaces (functions) by their port numbers.

Given that the power supply voltage may vary on different user boards, either of the ESP-Prog

interfaces can provide the 5V or the 3.3V power supply through pin headers, in order to ensure

power compatibility.

2. System Diagram

ESP-Prog's overall functional block diagram is displayed below: