de52b57041
Vendored and trimmed from microsoft/uf2-samdx1, adapted to the actual ATSAMD21G17D (128 KiB flash / 16 KiB RAM), fixing the flash/RAM-size mismatch that the previously commented-out SAM-BA bootloader target had (it assumed a 256 KiB SAMD21G18A). Builds as a standalone PlatformIO environment (bootloader/platformio.ini), no python2/make dependency. Compiles clean, fits in the 8 KiB bootloader region (7292/8192 bytes). Not yet flashed/verified on real hardware.
25 lines
803 B
INI
25 lines
803 B
INI
; VersaPad v2 -- UF2 bootloader
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; Vendored + adapted from Microsoft uf2-samdx1 (https://github.com/microsoft/uf2-samdx1),
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; trimmed to SAMD21 only, no self-update (SELF_EXECUTABLE) build, no Arduino framework.
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; Programmer: Atmel-ICE via SWD, same as the app firmware in ../platformio.ini.
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[env:versapad_bootloader]
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platform = atmelsam
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board = versapad_bootloader
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build_flags =
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-D__SAMD21G17A__
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-DSAMD21
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-DCRYSTALLESS
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-DFLASH_NUM_ROWS=512 ; ATSAMD21G17D: 128 KiB / 256 B rows (uf2.h defaults to 1024, the 256 KiB G18A value)
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-I.
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-Iinclude
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-Iinc
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-Ilib/cmsis/CMSIS/Include
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-Ilib/samd21/samd21a/include
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-Ilib/usb_msc
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board_build.ldscript = scripts/samd21g17a.ld
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upload_protocol = custom
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extra_scripts = ../upload_openocd.py
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debug_tool = openocd
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