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🐛 Prevent MPC E-permm overrun in Load Filament (#25531)

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Co-authored-by: Scott Lahteine <thinkyhead@users.noreply.github.com>
This commit is contained in:
Piotr Paczyński
2023-03-18 11:01:10 +01:00
committed by Scott Lahteine
parent 927915a4e6
commit fbb1c82bc2
3 changed files with 17 additions and 13 deletions
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17
Marlin/src/module/temperature.cpp
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@@ -319,6 +319,11 @@ PGMSTR(str_t_heating_failed, STR_T_HEATING_FAILED);
hotend_info_t Temperature::temp_hotend[HOTENDS];
constexpr celsius_t Temperature::hotend_maxtemp[HOTENDS];
#if ENABLED(MPCTEMP)
bool MPC::e_paused; // = false
int32_t MPC::e_position; // = 0
#endif
// Sanity-check max readable temperatures
#define CHECK_MAXTEMP_(N,M,S) static_assert( \
S >= 998 || M <= _MAX(TT_NAME(S)[0].celsius, TT_NAME(S)[COUNT(TT_NAME(S)) - 1].celsius) - HOTEND_OVERSHOOT, \
@@ -588,10 +593,6 @@ PGMSTR(str_t_heating_failed, STR_T_HEATING_FAILED);
volatile bool Temperature::raw_temps_ready = false;
#if ENABLED(MPCTEMP)
int32_t Temperature::mpc_e_position; // = 0
#endif
#define TEMPDIR(N) ((TEMP_SENSOR_##N##_RAW_LO_TEMP) < (TEMP_SENSOR_##N##_RAW_HI_TEMP) ? 1 : -1)
#define TP_CMP(S,A,B) (TEMPDIR(S) < 0 ? ((A)<(B)) : ((A)>(B)))
@@ -1511,14 +1512,14 @@ void Temperature::mintemp_error(const heater_id_t heater_id) {
if (this_hotend) {
const int32_t e_position = stepper.position(E_AXIS);
const float e_speed = (e_position - mpc_e_position) * planner.mm_per_step[E_AXIS] / MPC_dT;
const float e_speed = (e_position - MPC::e_position) * planner.mm_per_step[E_AXIS] / MPC_dT;
// The position can appear to make big jumps when, e.g., homing
if (fabs(e_speed) > planner.settings.max_feedrate_mm_s[E_AXIS])
mpc_e_position = e_position;
MPC::e_position = e_position;
else if (e_speed > 0.0f) { // Ignore retract/recover moves
ambient_xfer_coeff += e_speed * mpc.filament_heat_capacity_permm;
mpc_e_position = e_position;
if (!MPC::e_paused) ambient_xfer_coeff += e_speed * mpc.filament_heat_capacity_permm;
MPC::e_position = e_position;
}
}