Changes

* You MUST setup a clock and the serial lines for the chip. This is easily done by selecting a start-up script such as connecting to the "AES SimpleSerial on XMEGA" startup scriptscope and target, then running <code>default_setup()</code>:<syntaxhighlight lang=python>import chipwhisperer as cwscope = cw.scopetarget = cw.target(scope)scope.default_setup()</syntaxhighlight>* On the STM32F1, you MUST adjust the clock frequency to by 8MHz. The bootloader does not work with our usual 7.37 MHz clock frequency.'''This 8MHz frequency does not apply to the code that you're running on the device. Once you're done programming, you'll need to set the frequency back to F_CPU (likely 7.37MHz)''' For example:

# Select To access thebootloader you can perform these steps. They vary based on if you have a "Rev 02" board or a "Rev 03 or Later" board. The revision number is printed on the bottom side as part of the PCB part number (STM32F-03 is Rev -03 for example).#==== Rev -03 or Later ==== Run the following python code once you have the scope and target set up: [[File<syntaxhighlight lang=python>prog = cw.programmers.STM32FProgrammercw.program_target(scope, prog, "<path to fw hex file>")</syntaxhighlight> If you get errors during the programming process:arm_programmer* Retry the programming process with a lower baud rate:<syntaxhighlight lang=python>prog = cw.png]]programmers.STM32FProgrammer# Mount cw.program_target(scope, prog, "<path to fw hex file>", baud=38400)</syntaxhighlight>* If using a CW308 based STM, try mounting a jumper between the H1/H2 "SH-" and "SH+" pins at J16 (to the left of the SMA connector) on the UFO board. Retry programming with the jumper mounted. ==== Rev -02 Boards ==== The Rev -02 boards did not have all programming connections present. They require some additional steps: # Setup the device as usual:#:<syntaxhighlight lang=python>scope = cw.scope()target = cw.target(scope)scope.default_setup()</syntaxhighlight># Mount a jumper between the H1 and PDIC pins (again this is ONLY for the -02 rev).#: [[File:samjumperSTMF32F-02 programmer jumper.pngjpg|400px]]

#: [[File:arm_togglepower<syntaxhighlight lang=python>import timescope.png]]io.target_pwr = Falsetime.sleep(1)scope.io.target_pwr = True</syntaxhighlight># Select Program the device:#:<syntaxhighlight lang=python>prog = cw.programmers.STM32FProgrammercw.program_target(scope, prog, "<path to fw hex-file and press the >"Program)</Verify" button.syntaxhighlight># The device should program, it may take a moment to fully program/verify on larger devices:#: [[File:arm_programmed.png]]

#: [[File:arm_togglepower.png]]<syntaxhighlight lang=python>import time{{Warningbox|If you get verify errors, it's possible the shunt resistor is causing power to dip too lowscope. This can be solved by mounting a jumper between the "SH-" and "SH+" pins at J16 io.target_pwr = Falsetime.sleep(to the left of the SMA connector1) on the UFO boardscope. Retry programming with the jumper mountedio. }}target_pwr = True</syntaxhighlight>