Espressif Systems ESP8266EX - 4.2. Download Firmware; 4.3. Debugging AT Commands via UART

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Espressif Systems
ESP8266EX
Hardware User Guide
Figure 22 Options during Compiling
4.2. Download Firmware
When entering the UART download mode, set MTDO(IO15):IO0:IO2 as 0:0:1, after downloading
successfully, switch to the Flash boot mode 0:1:1.
Figure 23 below shows how to use Flash Download Tool.
Figure 23 Flash Download Tool
4.3. Debugging AT Commands via UART
1. All AT Commands has to be capitalised, and end with “/r/n”. Configure the port and enter the
commands.
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