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Reflow not starting when split

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-help 2024-02-01 04:04:57 +02:00
parent f62a71352e
commit 751aaa6b8c
5 changed files with 270 additions and 211 deletions
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3
src/common.h
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@ -70,4 +70,7 @@ enum ThermistorXY_Placement
};
#endif

236
src/reflow.cpp Normal file
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@ -0,0 +1,236 @@
#include "reflow.h"
//extern TemperatureController tempController;
ReflowStep::ReflowStep()
{
}
ReflowStep::ReflowStep(ReflowProcessState state, uint8_t time, uint8_t targetTemp) : state(state), duration(time), targetTemp(targetTemp), easeFunction(LINEAR) {}
ReflowStep::ReflowStep(ReflowProcessState state, uint8_t time, uint8_t targetTemp, ReflowStepEaseFunction fn) : state(state),
duration(time),
targetTemp(targetTemp),
easeFunction(fn)
{
}
float ReflowStep::calcTempAtPercentage(uint8_t startTemp, float percentage)
{
switch (this->easeFunction)
{
case LINEAR:
return startTemp + (this->targetTemp - startTemp) * percentage;
case EASE_IN_OUT:
return startTemp + (this->targetTemp - startTemp) * -(cos(percentage * PI) - 1) / (double)2;
case EASE_IN:
return startTemp + (this->targetTemp - startTemp) * (1 - cos(percentage * PI / (double)2));
case EASE_OUT:
return startTemp + (this->targetTemp - startTemp) * (sin(percentage * PI / (double)2));
case HALF_SINE:
return startTemp + (this->targetTemp - startTemp) * (sin(percentage * PI));
case SLOW_RAMP_HOLD:
if (percentage <= 0.75)
{
// Ramp up to the target temperature over the first 25% of the time
return startTemp + (this->targetTemp - startTemp) * (percentage / 0.75);
}
else
{
// Hold at the target temperature for the remaining 75% of the time
return this->targetTemp;
}
case MID_RAMP_HOLD:
if (percentage <= 0.50)
{
// Ramp up to the target temperature over the first half of the time
return startTemp + (this->targetTemp - startTemp) * (percentage / 0.50);
}
else
{
// Hold at the target temperature for the remaining half of the time
return this->targetTemp;
}
case FAST_RAMP_HOLD:
if (percentage <= 0.25)
{
// Ramp up to the target temperature over the first 75% of the time
return startTemp + (this->targetTemp - startTemp) * (percentage / 0.25);
}
else
{
// Hold at the target temperature for the remaining 25% of the time
return this->targetTemp;
}
}
}
ReflowProfile::ReflowProfile(ReflowStep steps[5], char name[20])
{
{
for (int i = 0; i < 5; i++)
{
this->steps[i] = steps[i];
}
for (int i = 0; i < 20; i++)
{
this->name[i] = name[i];
}
calculateValues();
}
}
void ReflowProfile::start()
{
timer = StopWatch(StopWatch::MILLIS);
timer.start();
}
void ReflowProfile::calculateValues()
{
endTimes[0] = steps[0].duration;
endTimes[1] = endTimes[0] + steps[1].duration;
endTimes[2] = endTimes[1] + steps[2].duration;
endTimes[3] = endTimes[2] + steps[3].duration;
endTimes[4] = endTimes[3] + steps[4].duration;
startTimes[0] = 0;
startTimes[1] = endTimes[0];
startTimes[2] = endTimes[1];
startTimes[3] = endTimes[2];
startTimes[4] = endTimes[3];
startTemps[0] = 20; // USe ambient temp as the starting temp for the first step
// We will grab the current PCB temp from the PID as the start temp otherwise the PID will be off
//startTemps[0] = tempController.getPlateTemperature();
endTemps[0] = steps[0].calcTempAtPercentage(startTemps[0], 1);
endTemps[1] = steps[1].calcTempAtPercentage(endTemps[0], 1);
endTemps[2] = steps[2].calcTempAtPercentage(endTemps[1], 1);
endTemps[3] = steps[3].calcTempAtPercentage(endTemps[2], 1);
endTemps[4] = steps[4].calcTempAtPercentage(endTemps[3], 1);
startTemps[1] = endTemps[0];
startTemps[2] = endTemps[1];
startTemps[3] = endTemps[2];
startTemps[4] = endTemps[3];
}
ReflowStep ReflowProfile::reflowStep()
{
if (!timer.isRunning())
{
return steps[0];
}
return reflowStep(timer.elapsed());
}
ReflowStep ReflowProfile::reflowStep(uint32_t elapsedMS)
{
if (!timer.isRunning())
{
return steps[0];
}
return reflowStep(timer.elapsed());
}
float ReflowProfile::getPercentage()
{
return timer.elapsed() / (double)TOMILLIS(endTimes[4]);
}
float ReflowProfile::getTargetTemp()
{
if (!timer.isRunning())
{
return startTemps[0];
}
return getTargetTemp(timer.elapsed());
}
float ReflowProfile::getTargetTemp(uint32_t elapsedMS)
{
ReflowStep curStep = reflowStep(elapsedMS);
uint32_t startTimeMS = TOMILLIS(startTimes[STEPINDEX(curStep)]);
uint32_t relativeElapsedTime = elapsedMS - startTimeMS;
float stepPercentage = relativeElapsedTime / (double)TOMILLIS(curStep.duration);
return curStep.calcTempAtPercentage(startTemps[STEPINDEX(curStep)], stepPercentage);
}
float ReflowProfile::getTargetTempFromPercentage(double processPercentage)
{
return getTargetTemp(TOMILLIS(endTimes[4]) * processPercentage);
}
uint8_t ReflowProfile::getCurrentStepRelativeTime()
{
uint32_t elapsedMS = timer.elapsed();
uint32_t startTimeMS = TOMILLIS(startTimes[STEPINDEX(reflowStep())]);
return (elapsedMS - startTimeMS) / 1000;
}
void ReflowProfile::toBuffer(uint8_t *b)
{
memset(b, 0, PROFILE_SERIALIZED_SIZE);
memcpy(b, name, PROFILE_SERIALIZED_NAME_SIZE);
for (int i = 0; i < 5; i++)
{
b[PROFILE_SERIALIZED_NAME_SIZE + i * 3] = steps[i].duration;
b[PROFILE_SERIALIZED_NAME_SIZE + 1 + i * 3] = steps[i].targetTemp;
b[PROFILE_SERIALIZED_NAME_SIZE + 2 + i * 3] = steps[i].easeFunction;
}
}
void ReflowProfile::toEEPROM(uint8_t index)
{
uint8_t b[40];
toBuffer(b);
EEPROM.put(index * PROFILE_SERIALIZED_SIZE, b);
}
ReflowProfile ReflowProfile::fromBuffer(const uint8_t *b)
{
char name[PROFILE_SERIALIZED_NAME_SIZE];
memcpy(name, b, PROFILE_SERIALIZED_NAME_SIZE);
ReflowStep steps[5] = {};
for (int i = 0; i < 5; i++)
{
steps[i] = ReflowStep(
(ReflowProcessState)(i + PREHEAT),
b[PROFILE_SERIALIZED_NAME_SIZE + i * 3],
b[PROFILE_SERIALIZED_NAME_SIZE + 1 + i * 3],
(ReflowStepEaseFunction)b[PROFILE_SERIALIZED_NAME_SIZE + 2 + i * 3]);
}
return ReflowProfile(steps, name);
}
ReflowProfile ReflowProfile::fromEEPROM(uint8_t index)
{
uint8_t b[40];
EEPROM.get(index * PROFILE_SERIALIZED_SIZE, b);
return fromBuffer(b);
}

233
src/reflow.h
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@ -4,10 +4,7 @@
#include <EEPROM.h>
#include "StopWatch.h"
#include "thermistors/Thermistor.h"
//#include "thermistors/TemperatureController.h"
// STATE MACHINE
enum ReflowProcessState
@ -41,98 +38,35 @@ enum ReflowStepEaseFunction
MID_RAMP_HOLD,
FAST_RAMP_HOLD
};
class ReflowStep
{
public:
ReflowStep() {}
ReflowStep(ReflowProcessState state, uint8_t time, uint8_t targetTemp) : state(state), duration(time), targetTemp(targetTemp), easeFunction(LINEAR) {}
ReflowStep(ReflowProcessState state, uint8_t time, uint8_t targetTemp, ReflowStepEaseFunction fn) : state(state),
duration(time),
targetTemp(targetTemp),
easeFunction(fn)
{
}
ReflowStep() ;
ReflowStep(ReflowProcessState state, uint8_t time, uint8_t targetTemp) ;
ReflowStep(ReflowProcessState state, uint8_t time, uint8_t targetTemp, ReflowStepEaseFunction fn);
uint8_t duration;
uint8_t targetTemp;
ReflowProcessState state;
ReflowStepEaseFunction easeFunction;
float calcTempAtPercentage(uint8_t startTemp, float percentage)
{
switch (this->easeFunction)
{
case LINEAR:
return startTemp + (this->targetTemp - startTemp) * percentage;
case EASE_IN_OUT:
return startTemp + (this->targetTemp - startTemp) * -(cos(percentage * PI) - 1) / (double)2;
case EASE_IN:
return startTemp + (this->targetTemp - startTemp) * (1 - cos(percentage * PI / (double)2));
case EASE_OUT:
return startTemp + (this->targetTemp - startTemp) * (sin(percentage * PI / (double)2));
case HALF_SINE:
return startTemp + (this->targetTemp - startTemp) * (sin(percentage * PI));
case SLOW_RAMP_HOLD:
if (percentage <= 0.75)
{
// Ramp up to the target temperature over the first 25% of the time
return startTemp + (this->targetTemp - startTemp) * (percentage / 0.75);
}
else
{
// Hold at the target temperature for the remaining 75% of the time
return this->targetTemp;
}
case MID_RAMP_HOLD:
if (percentage <= 0.50)
{
// Ramp up to the target temperature over the first half of the time
return startTemp + (this->targetTemp - startTemp) * (percentage / 0.50);
}
else
{
// Hold at the target temperature for the remaining half of the time
return this->targetTemp;
}
case FAST_RAMP_HOLD:
if (percentage <= 0.25)
{
// Ramp up to the target temperature over the first 75% of the time
return startTemp + (this->targetTemp - startTemp) * (percentage / 0.25);
}
else
{
// Hold at the target temperature for the remaining 25% of the time
return this->targetTemp;
}
}
}
float calcTempAtPercentage(uint8_t startTemp, float percentage);
};
#define PROFILE_SERIALIZED_SIZE 40
#define PROFILE_SERIALIZED_NAME_SIZE 20
#define STEPINDEX(step) (step.state - PREHEAT)
#define TOMILLIS(x) (((uint32_t)x) * (uint32_t)1000)
class ReflowProfile
{
public:
ReflowProfile(ReflowStep steps[5], char name[20])
{
for (int i = 0; i < 5; i++)
{
this->steps[i] = steps[i];
}
for (int i = 0; i < 20; i++)
{
this->name[i] = name[i];
}
calculateValues();
}
ReflowProfile(ReflowStep steps[5], char name[20]);
ReflowStep steps[5];
char name[20];
uint16_t endTimes[5] = {0};
@ -141,146 +75,31 @@ public:
uint8_t startTemps[5] = {0};
StopWatch timer;
void start()
{
timer = StopWatch(StopWatch::MILLIS);
timer.start();
}
void start();
void calculateValues()
{
endTimes[0] = steps[0].duration;
endTimes[1] = endTimes[0] + steps[1].duration;
endTimes[2] = endTimes[1] + steps[2].duration;
endTimes[3] = endTimes[2] + steps[3].duration;
endTimes[4] = endTimes[3] + steps[4].duration;
void calculateValues();
startTimes[0] = 0;
startTimes[1] = endTimes[0];
startTimes[2] = endTimes[1];
startTimes[3] = endTimes[2];
startTimes[4] = endTimes[3];
ReflowStep reflowStep();
// We will grab the current PCB temp from the PID as the start temp otherwise the PID will be off
startTemps[0] = 20; // USe ambient temp as the starting temp for the first step
endTemps[0] = steps[0].calcTempAtPercentage(startTemps[0], 1);
endTemps[1] = steps[1].calcTempAtPercentage(endTemps[0], 1);
endTemps[2] = steps[2].calcTempAtPercentage(endTemps[1], 1);
endTemps[3] = steps[3].calcTempAtPercentage(endTemps[2], 1);
endTemps[4] = steps[4].calcTempAtPercentage(endTemps[3], 1);
startTemps[1] = endTemps[0];
startTemps[2] = endTemps[1];
startTemps[3] = endTemps[2];
startTemps[4] = endTemps[3];
}
ReflowStep reflowStep()
{
if (!timer.isRunning())
{
return steps[0];
}
return reflowStep(timer.elapsed());
}
ReflowStep reflowStep(uint32_t elapsedMS)
{
for (int i = 0; i < 5; i++)
{
if (elapsedMS >= TOMILLIS(startTimes[i]) && elapsedMS < TOMILLIS(endTimes[i]))
{
return steps[i];
}
}
return steps[4]; // DONE by default
}
float getPercentage()
{
return timer.elapsed() / (double)TOMILLIS(endTimes[4]);
}
float getTargetTemp()
{
if (!timer.isRunning())
{
return startTemps[0];
}
return getTargetTemp(timer.elapsed());
}
float getTargetTemp(uint32_t elapsedMS)
{
ReflowStep curStep = reflowStep(elapsedMS);
uint32_t startTimeMS = TOMILLIS(startTimes[STEPINDEX(curStep)]);
uint32_t relativeElapsedTime = elapsedMS - startTimeMS;
float stepPercentage = relativeElapsedTime / (double)TOMILLIS(curStep.duration);
return curStep.calcTempAtPercentage(startTemps[STEPINDEX(curStep)], stepPercentage);
}
ReflowStep reflowStep(uint32_t elapsedMS);
float getPercentage();
float getTargetTemp();
float getTargetTemp(uint32_t elapsedMS);
/**
* @brief Get the Target Temp At Process Percentage.
* @param processPercentage a number between 0 and 1. 0 is the start of the process, 1 is the end of the process
* @return float the target temperature at the given percentage of the full process
*/
float getTargetTempFromPercentage(double processPercentage)
{
return getTargetTemp(TOMILLIS(endTimes[4]) * processPercentage);
}
float getTargetTempFromPercentage(double processPercentage);
uint8_t getCurrentStepRelativeTime();
uint8_t getCurrentStepRelativeTime()
{
uint32_t elapsedMS = timer.elapsed();
uint32_t startTimeMS = TOMILLIS(startTimes[STEPINDEX(reflowStep())]);
return (elapsedMS - startTimeMS) / 1000;
}
void toBuffer(uint8_t *b);
void toBuffer(uint8_t *b)
{
memset(b, 0, PROFILE_SERIALIZED_SIZE);
memcpy(b, name, PROFILE_SERIALIZED_NAME_SIZE);
for (int i = 0; i < 5; i++)
{
b[PROFILE_SERIALIZED_NAME_SIZE + i * 3] = steps[i].duration;
b[PROFILE_SERIALIZED_NAME_SIZE + 1 + i * 3] = steps[i].targetTemp;
b[PROFILE_SERIALIZED_NAME_SIZE + 2 + i * 3] = steps[i].easeFunction;
}
}
void toEEPROM(uint8_t index);
static ReflowProfile fromBuffer(const uint8_t *b);
void toEEPROM(uint8_t index)
{
uint8_t b[40];
toBuffer(b);
EEPROM.put(index * PROFILE_SERIALIZED_SIZE, b);
}
static ReflowProfile fromBuffer(const uint8_t *b)
{
char name[PROFILE_SERIALIZED_NAME_SIZE];
memcpy(name, b, PROFILE_SERIALIZED_NAME_SIZE);
ReflowStep steps[5] = {};
for (int i = 0; i < 5; i++)
{
steps[i] = ReflowStep(
(ReflowProcessState)(i + PREHEAT),
b[PROFILE_SERIALIZED_NAME_SIZE + i * 3],
b[PROFILE_SERIALIZED_NAME_SIZE + 1 + i * 3],
(ReflowStepEaseFunction)b[PROFILE_SERIALIZED_NAME_SIZE + 2 + i * 3]);
}
return ReflowProfile(steps, name);
}
static ReflowProfile fromEEPROM(uint8_t index)
{
uint8_t b[40];
EEPROM.get(index * PROFILE_SERIALIZED_SIZE, b);
return fromBuffer(b);
}
static ReflowProfile fromEEPROM(uint8_t index);
};
#endif

4
src/thermistors/TemperatureController.cpp
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@ -37,8 +37,8 @@ void TemperatureController::checkPluggedInThermistors()
// debugC(isPluggedIn == 1 ? "true" : "false");
}
debugC("Active thermistor count: ");
debugC(activeThermistorCount);
//debugC("Active thermistor count: ");
// debugC(activeThermistorCount);
}
float TemperatureController::getThermistorTempFast(uint8_t thermistorIndex)

5
src/thermistors/TemperatureController.h
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@ -1,8 +1,9 @@
#ifndef TEMPERATURE_CONTROLLER_H
#define TEMPERATURE_CONTROLLER_H
// #include "Thermistor.h"
#include "../globals.h"
#include "Thermistor.h"