Function FL_TEST_FILE

tests/fl/channels/rx_sct_capture.cpp:30–163

#include "test.h"

FL_TEST_FILE(FL_FILEPATH) {

using namespace fl;

namespace {

// WS2812B 4-phase decoder timings. Same nominal values as `WS2812Chipset`:
//   T0H = 400 ns, T0L = 850 ns, T1H = 800 ns, T1L = 450 ns.
// We use ±150 ns tolerance so an idealised generator (no jitter) is
// comfortably inside the window without making bit-1 / bit-0 ambiguous.
ChipsetTiming4Phase ws2812_timing() {
    ChipsetTiming4Phase t{};
    t.t0h_min_ns = 250;   t.t0h_max_ns = 550;
    t.t0l_min_ns = 700;   t.t0l_max_ns = 1000;
    t.t1h_min_ns = 650;   t.t1h_max_ns = 950;
    t.t1l_min_ns = 300;   t.t1l_max_ns = 600;
    t.reset_min_us = 50;
    t.gap_tolerance_ns = 0;
    return t;
}

// Emit one byte's worth of edge pairs (MSB first) into the buffer.
template <fl::size N>
void appendByte(fl::vector<EdgeTime>& edges, u8 byte) {
    for (int bit = 7; bit >= 0; --bit) {
        bool one = ((byte >> bit) & 0x1) != 0;
        edges.push_back(EdgeTime(true,  one ? 800u : 400u));   // HIGH
        edges.push_back(EdgeTime(false, one ? 450u : 850u));   // LOW
    }
    (void)N;
}

// Wrap a `fl::vector<EdgeTime>` as a span for injectEdges().
fl::span<const EdgeTime> toSpan(const fl::vector<EdgeTime>& v) {
    return fl::span<const EdgeTime>(v.data(), v.size());  // ok span from pointer — fl::vector → span<const T> conversion does not exist on this code path
}

}  // namespace

FL_TEST_CASE("RxBackend toString includes LPC_SCT_CAPTURE") {
    FL_CHECK(fl::strcmp(toString(RxBackend::LPC_SCT_CAPTURE), "LPC_SCT_CAPTURE") == 0);
    FL_CHECK(fl::strcmp(toString(RxDeviceType::LPC_SCT_CAPTURE), "LPC_SCT_CAPTURE") == 0);
}

FL_TEST_CASE("RxDevice::create<LPC_SCT_CAPTURE> returns a non-null device on every platform") {
    auto device = RxDevice::create<RxDeviceType::LPC_SCT_CAPTURE>(11);  // P0_11 on LPC845-BRK
    FL_REQUIRE(device != nullptr);
    FL_REQUIRE(device->name() != nullptr);
    FL_CHECK(device->getPin() == 11);
}

FL_TEST_CASE("LPC SCT-capture: injectEdges -> decode round-trips a known WS2812 GRB byte stream") {
    auto device = RxDevice::create<RxDeviceType::LPC_SCT_CAPTURE>(11);
    FL_REQUIRE(device != nullptr);

    RxConfig config;
    config.buffer_size = 256;
    config.start_low   = true;