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>
57 lines
3.0 KiB
C
57 lines
3.0 KiB
C
// Minimal test scaffolding. No frameworks, no dependencies — the whole
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// point of this harness is that it runs anywhere gcc runs.
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#pragma once
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#include <stdio.h>
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#include <stdlib.h>
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extern int g_tests_run;
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extern int g_tests_failed;
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#define CHECK(cond, ...) \
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do { \
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g_tests_run++; \
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if (!(cond)) { \
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g_tests_failed++; \
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printf(" FAIL %s:%d: ", __FILE__, __LINE__); \
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printf(__VA_ARGS__); \
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printf("\n condition: %s\n", #cond); \
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} \
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} while (0)
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#define CHECK_EQ_U(actual, expected, ...) \
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do { \
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unsigned long long a_ = (unsigned long long)(actual); \
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unsigned long long e_ = (unsigned long long)(expected); \
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g_tests_run++; \
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if (a_ != e_) { \
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g_tests_failed++; \
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printf(" FAIL %s:%d: ", __FILE__, __LINE__); \
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printf(__VA_ARGS__); \
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printf("\n expected %llu, got %llu\n", e_, a_); \
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} \
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} while (0)
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#define CHECK_NEAR(actual, expected, tol, ...) \
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do { \
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double a_ = (double)(actual); \
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double e_ = (double)(expected); \
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double d_ = a_ - e_; \
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if (d_ < 0) d_ = -d_; \
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g_tests_run++; \
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if (!(d_ <= (double)(tol))) { \
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g_tests_failed++; \
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printf(" FAIL %s:%d: ", __FILE__, __LINE__); \
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printf(__VA_ARGS__); \
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printf("\n expected %.6f +/- %.6f, got %.6f\n", \
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e_, (double)(tol), a_); \
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} \
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} while (0)
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#define SUITE(name) printf("[%s]\n", (name))
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void test_rd03e_parse(void);
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void test_bmp280_compensate(void);
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void test_mems_level(void);
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