avr/ds3231
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Rewrite on libavr

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Same driver surface as the yazoalfa version — clock and alarm get/set,
alarm interrupts, flag check/clear — plus oscillator-stop detection and
die temperature. One source for tiny85 (software I2C) and mega328P (TWI),
built against libavr in both generated and reflect mode, byte-identical
.text across modes. Errors surface as std::expected instead of being
dropped; weekday-rate alarms now really set the DY bit (legacy cleared
it); multi-register access is one coherent bus transaction. Legacy stays
on master.

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
BlackMark
2026-07-18 01:09:43 +02:00
parent 8a6170cb10
commit cdca5219d0
11 changed files with 438 additions and 928 deletions
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example/CMakeLists.txt Normal file
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add_executable(clock main.cpp)
target_link_libraries(clock PRIVATE ds3231)
add_custom_command(TARGET clock POST_BUILD COMMAND ${CMAKE_SIZE} $<TARGET_FILE:clock>)