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== Measuring power consumption ===
The target board contains headers which lets the hacker select where to measure. It is possible to select to measure power on the 3v3 input and the 1v2 input/decoupling. VCAP1 and VCAP2 should be shorted, an only one shunt resistor should be used. It seems that the VCAP pins are from the same power domain, namely the digital core logic domain.
== Hardware AES cryptography == The STM32F21x, and STM32F41x/43x have hardware crypto modules (AES, DES, TDES) along with hardware hash (SHA1, MD5). Hardware crypto for the STM32F4 has been integrated into the Hal build system on the develop branch. To use Some flavors of the STM32X7 supports hardware crypto, call HW_AES128_Init() at the beginning of your programcryptography . You can update the key with HW_AES128_LoadKey(), encrypt plaintext with HW_AES128_Enc(), and decrypt data with HW_AES128_Dec(). == CAN Connection == A 6-pin header is present for The tested devices which have CAN hardware support (not all devices have this). A CANoodler can be plugged in to provide the physical transceiver. This header is above table do not normally mountedsupport hardware cryptography, unless hence there are no firmware which supports the board is part of an 'automotive bundle'. The header is left unmounted as it can impede sweeping a probe over the surface of the chiphardware cryptography yet.
== Programming Connection ==
 === ChipWhisperer Programmer via Bootloader === See further down this wiki page for details. === JTAG Programmer === The 20-pin target board supports using both JTAG port (J6 on CW308 Board) can be used with the [https://wwwand SWD for ST-LINK/V2] which is a low-cost JTAG An external programmer.  It is also possible to use other JTAG programmers such as OpenOCDneeded, e. The following command worked with an Olimex OpenOCD programmer and their [ SEGGER Jlink or a ST-USB-OCD-H/ OpenOCD for Windows] software:<pre>openocd -f path/to/board/files/cw308.cfg -c init -c targets -c "halt" -c "flash write_image erase path/to/firmware.hex" -c "verify_image path/to/firmware.hex" -c "reset run" -c shutdown</pre>where the contents of <code>cw308.cfg</code> are<pre>source [find interface/olimex-arm-usb-ocd-h.cfg]source [find target/stm32f4xLink.cfg]reset_config srst_only</pre>
== Example Projects ==
=== STM32F7 ===SimpleSerial builds for each of the STM32Fx DevicesSTM32F7 devices using the ChipWhisperer build system. Each device is a separate HAL. These HAL modules have been copied from ST's HAL (not the CUBE) and greatly reduced in size by deleting unused files (such as headers . === STM32H7 ===SimpleSerial builds for unused the STM32H7 devices), and combining several Cusing Arm Keil uVision. This project could easily be ported to support the ChipWhisperer build system. The Keil-source files into a single low-level C-fileproject is also included in the repo. Keil IDE also supports debugging, which is helpful for working out all the kinks in your firmware.
=== Building ST Example on Command Line ===
If all goes well, this command will finish by printing Program the output file size and the platform: [[File:Stm32-make.png]] === Programming via ChipWhisperer Bootloader === {{:CW308T-STM32F/ChipWhisperer_Bootloader}} === Running ST Example with ST-Link ===If instead of device using the bootloader, you want to use a ST-Link you can instead plug your programmer into the 20 pin JTAG connector (J6 on the UFO board): [[File:Stm32-jtagpreferred method.jpg|600px]] Then, the details of this step will depend on your programmer. If you're using an ST-Link programmer, open the ST-Link utility and connect to the device: [[File:Stm32-connect.png]] Load your `.hex` file and program the device with the Program and Verify button: [[File:Stm32-programSEGGER JFlash is a great tool for that.png]] 
After this, you're ready to go - you can use the ChipWhisperer terminal to talk to your target. You might need to reset the target before you do anything else.
=== Building and Debugging via ST's System Workbench ===
It's also possible to work on the example projects using [ ST's System Workbench IDE]. This IDE also supports debugging, which is helpful for working out all the kinks in your firmware.
To build the ChipWhisperer examples in System Workbench:
1. Create a new Mcu project by going to ''File > New > C Project'' and selecting ''<nowiki/>'<nowiki/>''Ac6 STM32 MCU Project'''.'' When you get to Target Configuration, click the Mcu tab and select the microcontroller that you want to target:
[[File:STM32 New Project.PNG|400px]]
[[File:STM32 MCU-Selection.PNG|400px]]
2. Link the external files into the project. To do this, under ''File > Import'', select ''File System''. In the `chipwhisperer\hardware\victims\firmware` directory, select all of the relevant files and folders (Makefile in base folder, Makefile in HAL folder, STM32Fx HAL folder).:
[[File:STM32 Import.PNG|400px]]
3. Set up the build command. In ''File > Properties'', go to ''C/C++ Build > Behavior'' and remove 'all''<nowiki/>''' from 'Build' and deselect 'Enable parallel build'. Next, click the ''Builder Settings'' tab and deselect 'Use default build command' and 'Generate Makefiles Automatically'. Enter the command you would normally enter on the command line and change 'Build directory' to the folder you want to build in:
[[File:STM32 Behaviour.PNG|400px]]
[[File:STM32 Build-Settings.PNG|400px]]
4. Build the project and confirm that the build works from the output in the IDE console.
Then, if you want to set up debugging:
1. Go to ''in File > Properties'' select Run/Debug Settings and create a new debug configuration. Under Debugger, click 'Show generator options...' and setup your Connection Setup based on your debugger. Change 'Reset Mode' to 'Software System reset':
[[File:STM32 Debugging.PNG|400px]]
2. Click Apply and enter debugging mode.
'''Caveat''': the I/O register map in the debugger appears to use the last known device (ie: if you debugged an STM32F4 project before your Makefile project, it sticks with F4's registers). Check that the registers' addresses are correct before you trust them!
== Schematic ==
The following variants are possible, see the table above for SRAM/FLASH/HW-Crypto status:
{| class="wikitable"
=== Rev -01 Schematic ===
=== Rev -03 Schematic === The current revision of the target is -0301. The following shows this schematic: [[File:CW308T_STM32F_03.png|1100px]] === Rev -02 Schematic ===
The original board sold was the -02 revision. The revision is part of the part number, for example these boards will be marked STM32F-02. The -02 revision also does not have the CAN connector:[[File:cw308_stm32fCW308T_STM32X7_01.jpgpng|400px1100px]]
== Hardware ==

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