Based on ESP8266 off-chip SPI-Flash demo

Start a freertos task to run the flashDB routine, and then restart after 1000 seconds. Run log, please see the ESP8266_flashDB_log.rtf log in the current directory

ESP8266 Development Environment

• Ubuntu 16.04 64-bit
• Use Espressif IDF: ESP8266_RTOS_SDK (version: ESP-IDF v3.2-252-g73bf28b-dirty), download: <https://github.com/espressif/ESP8266_RTOS_SDK.git>
• Install the cross-compilation tool chain, download: <https://dl.espressif.com/dl/xtensa-lx106-elf-linux64-1.22.0-100-ge567ec7-5.2.0.tar.gz>

ESP8266 Development Guide

• For detailed installation and development tutorials, please refer to: <https://docs.espressif.com/projects/esp8266-rtos-sdk/en/latest/get-started/index.html>

Compile and download

• cd into the esp8266_spi_flash directory
• make all
• Use serial cable to connect 8266 development board to PC
• Enable the serial port, execute the command: sudo chmod 777 /dev/ttyUSB*
• make flash
• make monitor