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30 lines
870 B
Markdown
30 lines
870 B
Markdown
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DISC 2
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DISC2 is an evaluation board STM32U5G9J used for firmware development of Trezor models with the STM32U5.
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The kit has accessible pins, a display, and an embedded ST-Link.
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To build and flash firmware to the DISC2 target, follow these instructions:
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1. Compile the firmware for the target with TREZOR_MODEL=DISC2 and BOOTLOADER_DEVEL=1
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```sh
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cd core
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TREZOR_MODEL=DISC2 BOOTLOADER_DEVEL=1 make vendor build_boardloader build_bootloader build_firmware
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```
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2. Ensure that TrustZone is enabled on the DISC2 device, as explained here.
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3. Connect the DISC2 ST-Link to the PC using a micro-USB cable (connector CN5).
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4. Erase the DISC2 flash.
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```sh
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TREZOR_MODEL=DISC2 make flash_erase
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```
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5. Flash the freshly compiled firmware from step 1.
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```sh
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TREZOR_MODEL=DISC2 make flash
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````
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6. Reset the device (you may need to do this a couple of times) until it boots up.
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