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Fix timeout in thermal_runaway when temperature is set higher

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This commit is contained in:
Scott Lahteine 2015-04-03 19:34:55 -07:00
parent b98ebd517e
commit 528e32a1d4
1 changed files with 17 additions and 6 deletions
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23
Marlin/temperature.cpp
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@ -1006,6 +1006,9 @@ void setWatch() {
#if HAS_HEATER_THERMAL_PROTECTION || HAS_BED_THERMAL_PROTECTION #if HAS_HEATER_THERMAL_PROTECTION || HAS_BED_THERMAL_PROTECTION
void thermal_runaway_protection(TRState *state, unsigned long *timer, float temperature, float target_temperature, int heater_id, int period_seconds, int hysteresis_degc) { void thermal_runaway_protection(TRState *state, unsigned long *timer, float temperature, float target_temperature, int heater_id, int period_seconds, int hysteresis_degc) {
static int tr_target_temperature = 0;
/* /*
SERIAL_ECHO_START; SERIAL_ECHO_START;
SERIAL_ECHO("Thermal Thermal Runaway Running. Heater ID:"); SERIAL_ECHO("Thermal Thermal Runaway Running. Heater ID:");
@ -1029,19 +1032,27 @@ void setWatch() {
switch (*state) { switch (*state) {
// Inactive state waits for a target temperature to be set // Inactive state waits for a target temperature to be set
case TRInactive: case TRInactive:
if (target_temperature > 0) *state = TRFirstHeating; if (target_temperature > 0) {
*state = TRFirstHeating;
tr_target_temperature = target_temperature;
}
break; break;
// When first heating, wait for the temperature to be reached then go to Stable state // When first heating, wait for the temperature to be reached then go to Stable state
case TRFirstHeating: case TRFirstHeating:
if (temperature >= target_temperature) *state = TRStable; if (temperature >= tr_target_temperature) *state = TRStable;
break; break;
// While the temperature is stable watch for a bad temperature // While the temperature is stable watch for a bad temperature
case TRStable: case TRStable:
{ {
// Whenever the current temperature is over the target (-hysteresis) restart the timer // If the target temperature changes, restart
if (temperature >= target_temperature - hysteresis_degc) { if (tr_target_temperature != target_temperature) {
*timer = millis(); *state = TRInactive;
break;
} }
// If the temperature is over the target (-hysteresis) restart the timer
if (temperature >= tr_target_temperature - hysteresis_degc) *timer = millis();
// If the timer goes too long without a reset, trigger shutdown // If the timer goes too long without a reset, trigger shutdown
else if (millis() > *timer + period_seconds * 1000UL) { else if (millis() > *timer + period_seconds * 1000UL) {
SERIAL_ERROR_START; SERIAL_ERROR_START;
@ -1060,7 +1071,7 @@ void setWatch() {
} }
} }
#endif // HAS_HEATER_THERMAL_PROTECTION #endif // HAS_HEATER_THERMAL_PROTECTION || HAS_BED_THERMAL_PROTECTION
void disable_heater() { void disable_heater() {
for (int i=0; i<EXTRUDERS; i++) setTargetHotend(0, i); for (int i=0; i<EXTRUDERS; i++) setTargetHotend(0, i);