0966fa8cfc
The firmware has never been flashed, and a real bug already reached the repo because of it: RD03E_FRAME_LEN was 5 for a 6-byte frame, so the footer check collided with the distance high byte and EVERY distance reading was garbage — always `lo | 0x5500`, about 218 metres, regardless of what the sensor saw. That was pure logic with no hardware dependency. It should have been catchable on a laptop, and there was simply no way to run the code. Extracted the hardware-free logic out of the three drivers — rd03e_parse, bmp280_compensate, mems_level — as moves rather than rewrites, carrying the explanatory comments along with the code they explain. The drivers now own only their bus I/O and call into the pure units, so nothing changes for the real device. `./run_tests.sh` builds them with gcc -Wall -Wextra -Werror plus a dependency-free assert harness: 175 checks, 0 failed, from a clean tree. Proven to catch the actual bug rather than assumed to: reintroducing FRAME_LEN 5 fails four checks, including one that reads "a simple-report frame is 6 bytes, not 5", plus the truncated-frame and 5-byte-window cases. Restored, green again. This does NOT make the firmware verified, and the README says so plainly — it is called a narrow exception and scoped to pure logic. Wiring, timing, real register behaviour and the reconstructed RD-03E frame format all still need the physical board. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
41 lines
1008 B
Makefile
41 lines
1008 B
Makefile
# Host build for the ESP-IDF-free firmware logic units.
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#
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# Requires nothing but gcc and make. No ESP-IDF, no test framework, no
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# package manager. `make check` builds and runs; `run_tests.sh` wraps this
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# and is the entry point CI (and you) should call.
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CC ?= gcc
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CFLAGS ?= -std=c11 -O1 -g -Wall -Wextra -Werror
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LDLIBS ?= -lm
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MAIN_DIR := ../main
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BUILD := build
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# The pure units under test, moved out of their drivers precisely so they
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# can be compiled here without a cross-toolchain.
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UNITS := \
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$(MAIN_DIR)/rd03e_parse.c \
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$(MAIN_DIR)/bmp280_compensate.c \
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$(MAIN_DIR)/mems_level.c
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TESTS := \
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test_main.c \
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test_rd03e_parse.c \
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test_bmp280_compensate.c \
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test_mems_level.c
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BIN := $(BUILD)/firmware_tests
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.PHONY: all check clean
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all: $(BIN)
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$(BIN): $(UNITS) $(TESTS) test_util.h $(MAIN_DIR)/rd03e_parse.h $(MAIN_DIR)/bmp280_compensate.h $(MAIN_DIR)/mems_level.h
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@mkdir -p $(BUILD)
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$(CC) $(CFLAGS) -o $@ $(UNITS) $(TESTS) $(LDLIBS)
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check: $(BIN)
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./$(BIN)
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clean:
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rm -rf $(BUILD)
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