jmgiacalone/reflow-controller
1
0
Fork 0
generated from jmgiacalone/esp32-template
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Functional.

Browse Source
This commit is contained in:
jmgiacalone
2024-02-24 22:44:48 +00:00
parent 03d58b549d
commit 6fffdc8743
7 changed files with 1520 additions and 82 deletions
Download Patch File Download Diff File Expand all files Collapse all files

252
src/main.cpp
View File

@@ -1,4 +1,5 @@
#include <Arduino.h>
#define DEBUG
//Peripherals includes
#include <Wire.h>
@@ -6,6 +7,8 @@
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <max6675.h>
// #include <QuickPID.h>
#include <PID_v1.h>
//Web server includes
#include <AsyncElegantOTA.h>
@@ -16,14 +19,49 @@
#include <AsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include <SPIFFSEditor.h>
#include <Arduino_JSON.h>
// #include <Arduino_JSON.h>
#include "AsyncJson.h"
#include <ArduinoJson.h>
#include <Preferences.h>
Preferences settings;
#define MAX6675_SCLK 12
#define MAX6675_CS 13
#define MAX6675_MISO 15
#define I2C_SDA 5//13
#define I2C_SCL 4//15
#define LED_PIN 5
#define LED_PIN 16
#define HEATER_PIN 14
//PID
#define T_SAMPLE_PERIOD 1000 // in milliseconds.
uint32_t temperature_sample_timer = 0;
double target = 0;
double temperature = 0;
double power = 0;
int runProfile = 0;
long int profileStartTime = 0;
long int elapsedTime = 0;
struct dataPoint{
double time;
double temp;
};
struct dataPoint sProfile[10];
double kp = 950;
double ki = 0.05;
double kd = 100;
PID outputPID(&temperature, &power, &target, kp, ki, kd, DIRECT);
int cycle = 10000; //WindowSize
unsigned long duty = 0; //WindowStartTime
// boolean on_off = false;
//DATA
// StaticJsonBuffer<JSON_OBJECT_SIZE(5)> jbStatus;
// JsonObject& objStatus = jbStatus.createObject();
//*****
// Display defines
@@ -39,7 +77,6 @@ unsigned long lastScreenRefresh = 0;
//MAX6675(int8_t SCLK, int8_t CS, int8_t MISO);
MAX6675 tc(12, 13, 15);
unsigned long lastTempTime = 0;
float temperature;
//*********************************************************
// Web server variable declarations
@@ -51,7 +88,7 @@ AsyncWebServer server(80);
// AsyncEventSource events("/events");
//Variables to save values from HTML form
JSONVar scannedSSIDs;
// JSONVar scannedSSIDs;
String ssid;
String pass;
String ip;
@@ -86,14 +123,43 @@ bool initWiFi();
String getLEDState();
// ----------------------------------------------
String getStatus(void)
{
// String json;
JsonDocument jsonStatus;
jsonStatus["temp"] = String(temperature);
jsonStatus["target"] = String(target);
jsonStatus["power"] = String(power);
jsonStatus["runProfile"] = String(runProfile);
jsonStatus["elapsedTime"] = String(elapsedTime);
String out;
serializeJson(jsonStatus,out);
return out;
// return JSON.stringify(jsonStatus);
}
String getPID(AsyncWebServerRequest * request)
{
JsonDocument jsonPID;
jsonPID["kp"] = String(kp);
jsonPID["ki"] = String(ki);
jsonPID["kd"] = String(kd);
String out;
serializeJson(jsonPID,out);
return out;
}
String getJSONTemp(){
JSONVar jsonTemp;
JsonDocument jsonTemp;
jsonTemp["t"]=String(temperature);
return JSON.stringify(jsonTemp);
String out;
serializeJson(jsonTemp,out);
return out;
}
void setup() {
pinMode(LED_PIN, OUTPUT);
pinMode(HEATER_PIN, OUTPUT);
Serial.begin(115200);
@@ -146,7 +212,7 @@ server.addHandler(new SPIFFSEditor(SPIFFS,http_username,http_password));
server.on("/temperature", HTTP_GET, [](AsyncWebServerRequest *request){
String json = getJSONTemp();
request->send(200, "application/json", json);
json = String();
// json = String();
});
server.on("/scanNetworks", HTTP_GET, [](AsyncWebServerRequest *request){
@@ -288,32 +354,182 @@ server.addHandler(new SPIFFSEditor(SPIFFS,http_username,http_password));
ESP.restart();
}
});
server.on("/heap", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(200, "text/plain", String(ESP.getFreeHeap()));
});
server.on("/status", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(200, "text/plain", getStatus());
});
server.on("/pid", HTTP_GET, [](AsyncWebServerRequest *request){
request->send(200, "text/plain", getPID(request));
});
server.on("/pid",HTTP_POST, [](AsyncWebServerRequest *request){
if (request->hasParam("kp",true))
{
kp = request->getParam("kp",true)->value().toFloat();
#ifdef DEBUG
Serial.print("kp=");
Serial.print(kp,2);
Serial.print("; ");
#endif
}
if (request->hasParam("ki",true))
{
ki = request->getParam("ki",true)->value().toFloat();
#ifdef DEBUG
Serial.print("ki=");
Serial.print(ki,2);
Serial.print("; ");
#endif
}
if (request->hasParam("kd",true))
{
kd = request->getParam("kd",true)->value().toFloat();
#ifdef DEBUG
Serial.print("kd=");
Serial.print(kd,2);
Serial.print("; ");
#endif
}
#ifdef DEBUG
Serial.print("\n");
#endif
outputPID.SetTunings(kp, ki, kd);
server.begin();
request->send(200, "text/plain", getPID(request));
});
server.on("/target", HTTP_POST, [](AsyncWebServerRequest *request){
int params = request->params();
if(params > 0){
// AsyncWebParameter* p = request->getParam("value",true)->value().toFloat();
target = request->getParam("value",true)->value().toDouble();
Serial.printf("Target: %3.2f\n",target);
}else{
target = -273;
}
// if(request->hasParam("value")){
// target = request->getParam("value")->value().toFloat();
// Serial.printf("Target: %d",target);
// }
request->send(200, "text/plain", (String)target);
});
server.on("/profile", HTTP_POST,[](AsyncWebServerRequest *request){
// AsyncCallbackJsonWebHandler *handler = new AsyncCallbackJsonWebHandler("/profile", [](AsyncWebServerRequest *request, JsonVariant &json) {
int params = request->params();
if(request->hasParam("profile",true)){
JsonDocument jsonObj;
Serial.println(request->getParam("profile",true)->value());
DeserializationError error = deserializeJson(jsonObj, request->getParam("profile",true)->value());
if (error) {
// Handle the error
Serial.println(error.c_str()); request->send(400, "text/plain", "Invalid JSON payload"); return;
}else{
for(int i = 0;i<10;i++) {
//double point[2];
//int pointCount = jsonObj["profile"][i].as<JsonArray>().copyTo(point);
sProfile[i].time = jsonObj[i]["x"];
sProfile[i].temp = jsonObj[i]["y"];
#ifdef DEBUG
Serial.print("Point:");
Serial.print(i);
Serial.print(", Time:");
Serial.print(sProfile[i].time);
Serial.print(", Temp:");
Serial.println(sProfile[i].temp);
#endif
}
}
}
if(request->hasParam("run",true)){
runProfile = request->getParam("run",true)->value().toInt();
Serial.println(runProfile);
if(runProfile == 1){
profileStartTime = millis();
elapsedTime = 0;
}else{
target = 0;
}
}
request->send(200, "text/plain", "{test: \"ok\"}");
});
server.begin();
duty = millis();
outputPID.SetOutputLimits(0, cycle);
outputPID.SetSampleTime(T_SAMPLE_PERIOD);
outputPID.SetTunings(kp, ki, kd);
outputPID.SetMode(AUTOMATIC);
}
void loop() {
digitalWrite(LED_PIN,HIGH);
temperature = tc.readCelsius();
delay(500);
digitalWrite(LED_PIN,LOW);
delay(500);
if ((millis() - lastScreenRefresh) > SCREEN_REFRESH) {
long now = millis();
if(now - temperature_sample_timer >= T_SAMPLE_PERIOD)
{
temperature = tc.readCelsius();
temperature_sample_timer = now;
//deal with profile
if(runProfile == 1){
elapsedTime = millis() - profileStartTime;
if(sProfile[9].time * 1000 > elapsedTime){
//find segment
int segment = 0;
for(segment;segment<10;segment++){
if(sProfile[segment].time * 1000 < elapsedTime && sProfile[segment+1].time * 1000 >= elapsedTime){
break;
};
}
Serial.print("Segment:");
Serial.print(segment);
double t_t1 = elapsedTime - (sProfile[segment].time * 1000);
double t2_t1 = (sProfile[segment+1].time - sProfile[segment].time) * 1000;
double T2_T1 = sProfile[segment+1].temp - sProfile[segment].temp;
target = sProfile[segment].temp + (t_t1 / t2_t1) * T2_T1;
Serial.print(", Target:");
Serial.println(target);
}else{
runProfile = 0;
target = 0;
}
}
}
//set heater output
outputPID.Compute();
unsigned long rightNow = millis();
if (rightNow - duty > cycle)
{ //time to shift the Relay Window
duty += cycle;
}
if (power > rightNow - duty){
digitalWrite(HEATER_PIN, HIGH);
}else{
digitalWrite(HEATER_PIN, LOW);
}
if ((now - lastScreenRefresh) > SCREEN_REFRESH) {
Serial.printf("T:%.2f\n", temperature);
display.clearDisplay();
display.setTextSize(3);
display.setCursor(0, 5);
display.printf("T:%.1f\n", temperature);
display.setTextSize(1);
display.setCursor(0, 3);
display.printf("T:%.1f/%.1f\n", temperature, target);
display.setCursor(0,24);
display.printf("P:%.1f\n", power);
display.setCursor(0,48);
display.printf("%s\n",ssid);
display.printf("%s",ip);
display.display();
lastScreenRefresh = millis();
lastScreenRefresh = now;
}
}