st-flash:tldr:e6da9

This command uses the "st-flash" utility, which is a command-line tool used to flash or read firmware on STMicroelectronics microcontrollers.

The "st-flash read" command is used to read the firmware from the microcontroller's memory.

Here's a breakdown of the command:

• "st-flash" is the command itself, indicating that we want to use the st-flash utility.
• "read" specifies that we want to perform a read operation.
• "${firmware}.bin" is the name of the file where the read firmware will be saved. The "${firmware}" is likely to be a variable that holds the desired name of the file. ".bin" is a common file extension for binary firmware files.
• "${0x8000000}" is the address from where the read operation should start. In this case, it is hexadecimal representation (0x) of the address 8000000 in the microcontroller's memory.
• "${4096}" specifies the number of bytes to be read. In this case, it is set to 4096 bytes (or 4 kilobytes).

Overall, this command reads the firmware from the microcontroller's memory starting at the address 0x8000000 and saves it to a binary file named ${firmware}.bin.