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feat: implement frame parse and streaming reader

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cel_crsf_frame_parse() parses ELRS USB format frames:
  [addr][length][type][payload...][crc]

cel_crsf_stream_* provides incremental parsing from a byte
stream: skips invalid sync bytes, discards bad CRC frames,
buffers partial frames across feed calls.
This commit is contained in:
portersky
2026-06-14 20:51:57 +02:00
parent dde27ab566
commit a846b063f9
5 changed files with 335 additions and 36 deletions
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tests/CMakeLists.txt
+8
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@@ -38,6 +38,14 @@ target_compile_features(test_crsf PRIVATE c_std_23)
add_test(NAME test_crsf COMMAND test_crsf)
list(APPEND TEST_TARGETS test_crsf)
# CRSF stream tests
add_executable(test_crsf_stream test_crsf_stream.c)
target_include_directories(test_crsf_stream PRIVATE "${CMAKE_SOURCE_DIR}")
target_link_libraries(test_crsf_stream PRIVATE celrs_crsf Unity::Unity)
target_compile_features(test_crsf_stream PRIVATE c_std_23)
add_test(NAME test_crsf_stream COMMAND test_crsf_stream)
list(APPEND TEST_TARGETS test_crsf_stream)
# Serial tests — mocks the platform backend (serial_internal.h)
add_executable(test_serial test_serial.c)
target_include_directories(test_serial PRIVATE "${CMAKE_SOURCE_DIR}")