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% st-flash(1) Open Source STMicroelectronics Stlink Tools | stlink
%
% Feb 2018
# NAME
st-flash - Flash binary files to STM32 device
# SYNOPSIS
*st-flash* \[*OPTIONS*\] \{read|write|erase\} \[*FILE*\] \<ADDR\> \<SIZE\>
# DESCRIPTION
Flash binary files to arbitrary sections of memory, or read arbitrary addresses
of memory out to a binary file.
You can use this instead of st-util(1) if you prefer, but remember to use the
**.bin** image, rather than the **.elf** file.
Use hexadecimal format for the *ADDR* and *SIZE*.
The STLink device to use can be specified using the --serial parameter, or via
the environment variable STLINK_DEVICE on the format <USB_BUS>:<USB_ADDR>.
# COMMANDS
write *FILE* *ADDR*
: Write firmware *FILE* to device starting from *ADDR*
read *FILE* *ADDR* *SIZE*
: Read firmware from device starting from *ADDR* up to *SIZE* bytes to *FILE*
erase
: Perform a mass erasing of the device firmware
reset
: Reset the target
# OPTIONS
\--version
: Print version information
\--debug
: TODO
\--reset
: Trigger a reset both before and after flashing
\--opt
: Enable ignore ending empty bytes optimization
\--serial *iSerial*
: TODO
\--flash=fsize
: Where fsize is the size in decimal, octal, or hex followed by an optional multiplier
'k' for KB, or 'm' for MB.
Use a leading "0x" to specify hexadecimal, or a leading zero for octal.
# EXAMPLES
Flash `firmware.bin` to device
$ st-flash write firmware.bin 0x8000000
Read firmware from device (4096 bytes)
$ st-flash read firmware.bin 0x8000000 0x1000
Erase firmware from device
$ st-flash erase
# SEE ALSO
st-util(1), st-info(1)
# COPYRIGHT
This work is copyrighted. Stlink contributors.
See *LICENSE* file in the stlink source distribution.
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