Write into SPIFF FileSystem

Tools required:

• mkspiff
• esptool

First create a binary payload from the directory to be uploaded to the SPIFFs filesystem using mkspiffs:

mkspiffs -c PATH -b 4096 -p 256 data.bin

where:

• PATH is the path to a directory that will become the root on the SPIFFs filesystem

Next, use esptool to write the binary data.bin into flash:

esptool --chip esp8266 --port /dev/ttyUSB --baud 115200 write_flash 0xEB000 data.bin

where:

• /dev/ttyUSB is the serial port to use.
• 0xEB000 is the start address of the SPIFFS filesystem.

And finally verify that the data was written using esptool:

esptool --chip esp8266 --port /dev/ttyUSB --baud 115200 read_flash 0xEB000 0x1000 data.txt

where:

• 0x1000 is the size of the memory to read.