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next_ vars faster than previous_

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- Change some `previous_` time vars to `next_` so an add only happens
at intervals
- Fix `HEATER_0_USES_MAX6675` polling too frequently, or not at all
This commit is contained in:
Scott Lahteine 2015-04-12 23:06:50 -07:00
parent cfa60bdb97
commit e4b1e8651b
1 changed files with 15 additions and 13 deletions
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28
Marlin/temperature.cpp
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@ -118,7 +118,7 @@ static volatile bool temp_meas_ready = false;
static float temp_iState_min_bed;
static float temp_iState_max_bed;
#else //PIDTEMPBED
static millis_t previous_bed_check_ms;
static millis_t next_bed_check_ms;
#endif //PIDTEMPBED
static unsigned char soft_pwm[EXTRUDERS];
@ -126,7 +126,7 @@ static volatile bool temp_meas_ready = false;
static unsigned char soft_pwm_fan;
#endif
#if HAS_AUTO_FAN
static millis_t previous_auto_fan_check_ms;
static millis_t next_auto_fan_check_ms;
#endif
#ifdef PIDTEMP
@ -205,7 +205,7 @@ void PID_autotune(float temp, int extruder, int ncycles)
float max = 0, min = 10000;
#if HAS_AUTO_FAN
millis_t previous_auto_fan_check_ms = temp_ms;
millis_t next_auto_fan_check_ms = temp_ms + 2500;
#endif
if (extruder >= EXTRUDERS
@ -240,9 +240,9 @@ void PID_autotune(float temp, int extruder, int ncycles)
min = min(min, input);
#if HAS_AUTO_FAN
if (ms > previous_auto_fan_check_ms + 2500) {
if (ms > next_auto_fan_check_ms) {
checkExtruderAutoFans();
previous_auto_fan_check_ms = ms;
next_auto_fan_check_ms = ms + 2500;
}
#endif
@ -631,16 +631,16 @@ void manage_heater() {
} // Extruders Loop
#if HAS_AUTO_FAN
if (ms > previous_auto_fan_check_ms + 2500) { // only need to check fan state very infrequently
if (ms > next_auto_fan_check_ms) { // only need to check fan state very infrequently
checkExtruderAutoFans();
previous_auto_fan_check_ms = ms;
next_auto_fan_check_ms = ms + 2500;
}
#endif
#ifndef PIDTEMPBED
if (ms < previous_bed_check_ms + BED_CHECK_INTERVAL) return;
previous_bed_check_ms = ms;
#endif //PIDTEMPBED
if (ms < previous_bed_check_ms) return;
next_bed_check_ms = ms + BED_CHECK_INTERVAL;
#endif
#if TEMP_SENSOR_BED != 0
@ -1109,16 +1109,18 @@ void disable_heater() {
#ifdef HEATER_0_USES_MAX6675
#define MAX6675_HEAT_INTERVAL 250u
millis_t previous_max6675_ms = MAX6675_HEAT_INTERVAL;
static millis_t next_max6675_ms = 0;
int max6675_temp = 2000;
static int read_max6675() {
millis_t ms = millis();
if (ms < previous_max6675_ms + MAX6675_HEAT_INTERVAL)
if (ms < next_max6675_ms)
return max6675_temp;
previous_max6675_ms = ms;
next_max6675_ms = ms + MAX6675_HEAT_INTERVAL;
max6675_temp = 0;
#ifdef PRR