13. AT Reference manual
Important: the following table list of AT commands is available only for Python scripts
to communicate with microcontroller through SER2 interface.
COMMAND Function
AT Starting a Command Line
E Command Echo
#VER Device Version
#GPIO General Purpose Input/Output Pin
Control
#ADC Analog/Digital Converter Input
#I2C I2C Bus Control
#SLEEP Switch device into power-down mode
#SD SD card status
#SDRBLOCK Read data block from SD card
#SDWBLOCK Write data block to SD card
#FMKDIR Create a directory
#FCREATE Create a file
#FREMOVE Removing a file or directory
#FREMOVEALL Remove all directories and files
#FCD Change current location
#FDIR List of all files and directories
#FINIT Initialize FAT32 and set time and date
#FWRITE Write a file
#FREAD Read a file
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