This commit is contained in:
SoftFever
2026-08-05 18:09:36 +08:00
parent 194ef34080
commit 1d023216f2
4 changed files with 59 additions and 69 deletions

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@@ -1345,6 +1345,8 @@ public:
{
std::string buffer;
if (wait_for_moves)
// Not flush_planner_queue_command(): this BBL precool path wants M400, which every
// flavor it reaches understands, not the zero dwell the other flavors flush with.
buffer += "M400\n";
buffer += "M104";
if (target_extruder != -1)

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@@ -26,16 +26,11 @@ enum GCodeFlavor : unsigned char;
Polylines construct_gap_for_skip_points(
const Polygon& polygon, const std::vector<Vec2f>& skip_points, float wt_width, float gap_length, Polygon& insert_skip_polygon);
// Returns the command that makes the firmware finish its queued moves around an M104/M109
// or custom-G-code boundary. Klipper acts on commands the instant it parses them, and its G4
// reads only P, so the zero dwell other flavors use synchronizes nothing there — M400 does.
// Defined in WipeTower.cpp, shared by WipeTower and WipeTower2.
const char* flush_planner_queue_command(GCodeFlavor flavor);
// Returns the command that pauses for `seconds`. Klipper's G4 reads only P, in
// milliseconds, and ignores S, so the seconds form the other flavors use would dwell zero
// there. Defined in WipeTower.cpp, shared by WipeTower and WipeTower2.
std::string wait_command(GCodeFlavor flavor, float seconds);
// Klipper acts on commands the instant it parses them, and its G4 reads only P (milliseconds),
// so the zero-second and seconds-valued dwells every other flavor uses neither synchronize nor
// pause there. Both defined in WipeTower.cpp, shared by WipeTower and WipeTower2.
const char* flush_planner_queue_command(GCodeFlavor flavor); // finish queued moves, e.g. around M104/M109
std::string wait_command(GCodeFlavor flavor, float seconds); // pause for `seconds`
class WipeTower
{

View File

@@ -386,8 +386,8 @@ public:
}
WipeTowerWriter2& switch_filament_monitoring(bool enable) {
m_gcode += flush_planner_queue_command(m_gcode_flavor);
m_gcode += std::string("M591 ") + (enable ? "R" : "S0") + "\n";
flush_planner_queue();
m_gcode += enable ? "M591 R\n" : "M591 S0\n";
return *this;
}
@@ -626,7 +626,7 @@ public:
// Set extruder temperature, don't wait by default.
WipeTowerWriter2& set_extruder_temp(int temperature, bool wait = false)
{
m_gcode += flush_planner_queue_command(m_gcode_flavor);
flush_planner_queue();
m_gcode += "M" + std::to_string(wait ? 109 : 104) + " S" + std::to_string(temperature) + "\n";
return *this;
}

View File

@@ -1,7 +1,9 @@
#include <catch2/catch_all.hpp>
#include <string>
#include <vector>
#include "libslic3r/GCode/GCodeProcessor.hpp"
#include "libslic3r/GCode/WipeTower.hpp"
#include "libslic3r/PrintConfig.hpp"
@@ -10,13 +12,22 @@
using namespace Slic3r;
using namespace Slic3r::Test;
// Pins the enum's size: the two GENERATE lists below hand-list every non-Klipper flavor, so a
// 14th `GCodeFlavor` value would silently go untested unless this fails the build first.
static_assert(int(gcfNoExtrusion) == 12, "GCodeFlavor grew: add the new value to the GENERATE lists in this file");
// Taken from the config enum map rather than hand-listed, so a flavor added to GCodeFlavor later
// is covered here without editing this file.
static std::vector<GCodeFlavor> non_klipper_flavors()
{
std::vector<GCodeFlavor> flavors;
for (const auto &[name, value] : ConfigOptionEnum<GCodeFlavor>::get_enum_values())
if (GCodeFlavor(value) != gcfKlipper)
flavors.push_back(GCodeFlavor(value));
return flavors;
}
static std::string flavor_name(GCodeFlavor flavor)
{
return ConfigOptionEnum<GCodeFlavor>::get_enum_names()[int(flavor)];
}
// The wipe tower flushes the firmware's motion queue around an M104/M109 or custom-G-code
// boundary. Klipper acts on those the moment it parses them, and its G4 reads only P, so the
// zero dwell every other flavor uses is not a flush there.
TEST_CASE("Klipper flushes the wipe tower planner queue with M400", "[WipeTower]")
{
CHECK(std::string(flush_planner_queue_command(gcfKlipper)) == "M400\n");
@@ -24,16 +35,11 @@ TEST_CASE("Klipper flushes the wipe tower planner queue with M400", "[WipeTower]
TEST_CASE("Other flavors flush the wipe tower planner queue with a zero dwell", "[WipeTower]")
{
const GCodeFlavor flavor = GENERATE(gcfMarlinLegacy, gcfRepRapFirmware, gcfRepetier,
gcfMarlinFirmware, gcfRepRapSprinter, gcfTeacup,
gcfMakerWare, gcfSailfish, gcfMach3, gcfMachinekit,
gcfSmoothie, gcfNoExtrusion);
INFO("gcode flavor enum value: " << int(flavor));
const GCodeFlavor flavor = GENERATE(from_range(non_klipper_flavors()));
INFO("gcode flavor: " << flavor_name(flavor));
CHECK(std::string(flush_planner_queue_command(flavor)) == "G4 S0\n");
}
// A timed pause is emitted in seconds for most firmware. Klipper's G4 reads only P, in
// milliseconds, and ignores S, so the seconds form would pause for no time at all there.
// 1.5s is exactly representable as a float, so neither form can drift when rounded.
TEST_CASE("Klipper waits in the wipe tower with a millisecond dwell", "[WipeTower]")
{
@@ -42,44 +48,39 @@ TEST_CASE("Klipper waits in the wipe tower with a millisecond dwell", "[WipeTowe
TEST_CASE("Other flavors wait in the wipe tower with a seconds dwell", "[WipeTower]")
{
const GCodeFlavor flavor = GENERATE(gcfMarlinLegacy, gcfRepRapFirmware, gcfRepetier,
gcfMarlinFirmware, gcfRepRapSprinter, gcfTeacup,
gcfMakerWare, gcfSailfish, gcfMach3, gcfMachinekit,
gcfSmoothie, gcfNoExtrusion);
INFO("gcode flavor enum value: " << int(flavor));
const GCodeFlavor flavor = GENERATE(from_range(non_klipper_flavors()));
INFO("gcode flavor: " << flavor_name(flavor));
CHECK(wait_command(flavor, 1.5f) == "G4 S1.500\n");
}
// The two helpers above are only unit-tested in isolation. Nothing yet confirms that a
// Klipper `gcode_flavor` actually reaches the wipe tower writer and lands in the exported
// G-code, which is the binding constraint of both changes above ("only gcfKlipper changes").
// These slice a real two-filament print and check that.
// The cases above only exercise the helpers in isolation. The one below slices a real
// two-filament print, so it also covers the binding constraint of both changes: that the
// configured `gcode_flavor` reaches the wipe tower writer and lands in the exported G-code.
// The G-code between each "WIPE_TOWER_START"/"WIPE_TOWER_END" tag pair the wipe tower writes
// around its toolchange chunks, concatenated. Isolates the region the flush/dwell helpers can
// emit into from ordinary object G-code, where an unrelated M400 (e.g. GCodeProcessor's
// pre-heat injector, gated off here since neither test sets enable_pre_heating) would
// otherwise create a false match.
// The G-code inside each WIPE_TOWER_START/WIPE_TOWER_END pair, concatenated, so an M400 emitted
// outside the tower (e.g. GCodeProcessor's pre-heat injector) cannot create a false match.
static std::string wipe_tower_regions(const std::string &gcode)
{
const std::string &start_tag = GCodeProcessor::reserved_tag(GCodeProcessor::ETags::Wipe_Tower_Start);
const std::string &end_tag = GCodeProcessor::reserved_tag(GCodeProcessor::ETags::Wipe_Tower_End);
std::string regions;
size_t pos = 0;
while (true) {
size_t start = gcode.find("WIPE_TOWER_START", pos);
size_t start = gcode.find(start_tag, pos);
if (start == std::string::npos)
break;
size_t end = gcode.find("WIPE_TOWER_END", start);
size_t end = gcode.find(end_tag, start);
if (end == std::string::npos)
break;
regions += gcode.substr(start, end - start);
regions.append(gcode, start, end - start);
pos = end + 1;
}
return regions;
}
// A per-layer toolchange between the wall and infill filaments, same shape as
// test_multifilament.cpp's "Each feature prints with its assigned filament", so the wipe
// tower actually runs its toolchange path (and so `flush_planner_queue()`) on every layer.
// test_multifilament.cpp's "Each feature prints with its assigned filament", so the wipe tower
// runs its toolchange path (and so `flush_planner_queue()`) on every layer.
static DynamicPrintConfig wipe_tower_toolchange_config(const std::string &gcode_flavor)
{
return multifilament_config(2, {
@@ -90,41 +91,33 @@ static DynamicPrintConfig wipe_tower_toolchange_config(const std::string &gcode_
{ "outer_wall_filament_id", 2 },
{ "inner_wall_filament_id", 2 },
{ "enable_prime_tower", true },
{ "layer_height", 0.3 },
{ "gcode_flavor", gcode_flavor },
});
}
// Slices a 20mm cube under `config`. Not just `Test::slice(...)`: a brand-new Print's first
// `apply()` call still has no per-feature regions built, so it undercounts the filaments in
// use and lets DynamicPrintConfig::normalize_fdm_2's "single filament" rule turn
// `enable_prime_tower` back off before the wipe tower ever runs. Applying the same config a
// second time, once init_print's first apply has settled those regions, lets that count see
// both filaments so the prime tower stays on.
// Slices a 10mm cube under `config`. Not plain Test::slice: a brand-new Print's first `apply()`
// counts one filament in use, and DynamicPrintConfig::normalize_fdm_2's single-filament rule then
// clears `enable_prime_tower`. A second apply, once init_print's regions have settled, sees both
// filaments and the tower survives.
static std::string slice_with_prime_tower(const DynamicPrintConfig &config)
{
Print print;
Model model;
init_print({ cube(20) }, print, model, config);
init_print({ cube(10) }, print, model, config);
print.apply(model, config);
return gcode(print);
}
TEST_CASE("Klipper's wipe tower toolchanges flush the planner queue with M400 in exported G-code", "[WipeTower]")
TEST_CASE("The wipe tower's toolchange planner flush follows the gcode flavor", "[WipeTower]")
{
const std::string gcode = slice_with_prime_tower(wipe_tower_toolchange_config("klipper"));
REQUIRE_THAT(gcode, Catch::Matchers::ContainsSubstring("WIPE_TOWER_START"));
const std::string tower = wipe_tower_regions(gcode);
CHECK_THAT(tower, Catch::Matchers::ContainsSubstring("M400"));
CHECK_THAT(tower, !Catch::Matchers::ContainsSubstring("G4 S0"));
}
TEST_CASE("Marlin's wipe tower toolchanges keep the zero-dwell flush in exported G-code", "[WipeTower]")
{
const std::string gcode = slice_with_prime_tower(wipe_tower_toolchange_config("marlin"));
REQUIRE_THAT(gcode, Catch::Matchers::ContainsSubstring("WIPE_TOWER_START"));
const std::string tower = wipe_tower_regions(gcode);
CHECK_THAT(tower, Catch::Matchers::ContainsSubstring("G4 S0"));
CHECK_THAT(tower, !Catch::Matchers::ContainsSubstring("M400"));
auto [flavor, expected, unexpected] = GENERATE(table<std::string, std::string, std::string>({
{ "klipper", "M400", "G4 S0" },
{ "marlin", "G4 S0", "M400" } }));
DYNAMIC_SECTION(flavor) {
const std::string tower = wipe_tower_regions(slice_with_prime_tower(wipe_tower_toolchange_config(flavor)));
REQUIRE_FALSE(tower.empty());
CHECK_THAT(tower, Catch::Matchers::ContainsSubstring(expected));
CHECK_THAT(tower, !Catch::Matchers::ContainsSubstring(unexpected));
}
}