From f55f9dd714da0e96a2badbf724f66af89461b9ce Mon Sep 17 00:00:00 2001
From: Denis Denisov <ftc.denis@gmail.com>
Date: Sun, 8 Oct 2023 16:06:40 +0300
Subject: [PATCH] Initial commit

---
 config.h        |   8 +++
 config.h.sample |   8 +++
 defrost_v3.ino  | 145 ++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 161 insertions(+)
 create mode 100644 config.h
 create mode 100644 config.h.sample
 create mode 100644 defrost_v3.ino

diff --git a/config.h b/config.h
new file mode 100644
index 0000000..819e7e4
--- /dev/null
+++ b/config.h
@@ -0,0 +1,8 @@
+
+#define WIFI_NAME "ftc_zaozerye"
+#define WIFI_PASS "prevedlocalmedved" 
+#define REMOTE_IP "192.168.0.10"
+#define REMOTE_PORT 7000
+#define MY_IP 192,168,0,21
+#define MY_GW 192,168,0,1
+#define MY_NET 255,255,255,0
diff --git a/config.h.sample b/config.h.sample
new file mode 100644
index 0000000..22910e6
--- /dev/null
+++ b/config.h.sample
@@ -0,0 +1,8 @@
+
+#define WIFI_NAME "your wi-fi name"
+#define WIFI_PASS "you wi-fi password" 
+#define REMOTE_ADDR "IP address of host to send data to"
+#define REMOTE_PORT 7000
+#define MY_IP 192,168,0,21
+#define MY_GW 192,168,0,1
+#define MY_NET 255,255,255,0
diff --git a/defrost_v3.ino b/defrost_v3.ino
new file mode 100644
index 0000000..9b28534
--- /dev/null
+++ b/defrost_v3.ino
@@ -0,0 +1,145 @@
+#include <ESP8266WiFi.h>
+#include <ModbusIP_ESP8266.h>
+#include "config.h"
+
+// network
+
+IPAddress my_ip(MY_IP);
+IPAddress gateway(MY_GW);
+IPAddress subnet(MY_NET);
+
+// modbus consts and works
+#define TCP_PORT 15000
+#define POLL_INTERVAL 10000
+#define T_UPDATE_INTERVAL 500
+
+#define MODE_AUTO 0
+#define MODE_MANUAL 1
+
+#define REGISTER_ON_TEMP 0
+#define REGISTER_OFF_TEMP 1
+#define REGISTER_MODE 2
+#define REGISTER_CUR_TEMP 3
+#define REGISTER_CUR_STATE 4
+#define REGISTER_SECONDARY_TEMP 5
+
+ModbusIP mb;
+
+char id[64];
+
+long last_poll;
+long last_update;
+
+int t_on = 100;
+int t_off = 1000;
+int cur_mode = MODE_AUTO;
+int cur_t = 0;
+int cur_state = 0;
+
+void setup() 
+{
+	pinMode(D2, OUTPUT);
+	Serial.begin(115200);
+	Serial.println("Initialised...");
+
+	WiFi.mode(WIFI_STA);
+	WiFi.config(my_ip, gateway, subnet);
+	WiFi.setAutoReconnect(true);
+	WiFi.begin(WIFI_NAME, WIFI_PASS);
+	Serial.print("Connecting");
+	while (WiFi.status() != WL_CONNECTED)
+	{
+		delay(500);
+		Serial.print(".");
+	}
+	Serial.println();
+
+	Serial.print("Connected, IP address: ");
+	Serial.println(WiFi.localIP());
+	uint8_t macAddr[6];
+	WiFi.macAddress(macAddr);
+	sprintf(id, "%02x:%02x:%02x:%02x:%02x:%02x", macAddr[0], macAddr[1], macAddr[2], macAddr[3], macAddr[4], macAddr[5]);
+	Serial.printf("Connected, mac address: %s\n", id);
+	last_poll = millis();
+	
+	mb.server(15000);
+	mb.addHreg(REGISTER_ON_TEMP, t_on);
+	mb.addHreg(REGISTER_OFF_TEMP, t_off);
+	mb.addHreg(REGISTER_MODE, cur_mode);
+	mb.addHreg(REGISTER_CUR_TEMP, cur_t);
+	mb.addHreg(REGISTER_CUR_STATE, cur_state);
+	mb.addHreg(REGISTER_SECONDARY_TEMP, cur_t);
+}
+
+// thermistor 
+#define THERMISTORPIN A0
+#define THERMISTORNOMINAL 10000
+#define TEMPERATURENOMINAL 25
+#define NUMSAMPLES 5
+#define BCOEFFICIENT 3950
+#define SERIESRESISTOR 10000
+
+void UpdateCurrent()
+{
+	float average = 0;
+	for (int i = 0; i < NUMSAMPLES; i++) 
+	{
+		average += analogRead(THERMISTORPIN);
+		delay(10);
+	}
+	average /= NUMSAMPLES;
+	average = 1023 / average - 1;
+	average = SERIESRESISTOR / average;
+	float steinhart;
+	steinhart = average / THERMISTORNOMINAL; // (R/Ro)
+	steinhart = log(steinhart); // ln(R/Ro)
+	steinhart /= BCOEFFICIENT; // 1/B * ln(R/Ro)
+	steinhart += 1.0 / (TEMPERATURENOMINAL + 273.15); // + (1/To)
+	steinhart = 1.0 / steinhart; // инвертируем
+	steinhart -= 273.15; // конвертируем в градусы по Цельсию
+	cur_t = int(steinhart * 100);
+	last_update = millis();
+}
+
+void loop() 
+{
+	unsigned long current = millis();
+	int u = 0;
+	if (current < last_update || current - last_update >= T_UPDATE_INTERVAL)
+	{
+		UpdateCurrent();
+		u = 1;
+	}
+	mb.task();
+	t_on = mb.Hreg(REGISTER_ON_TEMP);
+	t_off = mb.Hreg(REGISTER_OFF_TEMP);
+	cur_mode = mb.Hreg(REGISTER_MODE);
+	if (cur_mode == 0)
+	{
+		if (cur_t < t_on) cur_state = 1;
+		else if (cur_t > t_off) cur_state = 0;
+		mb.Hreg(REGISTER_CUR_STATE, cur_state);
+	}
+	else
+	{
+		cur_state = mb.Hreg(REGISTER_CUR_STATE);
+	}
+	digitalWrite(D2, cur_state);
+	if (u) 
+	{
+		Serial.println("Cur state");
+		Serial.println(cur_state);
+    Serial.println(cur_t);
+	}
+	mb.Hreg(REGISTER_ON_TEMP, t_on);
+	mb.Hreg(REGISTER_OFF_TEMP, t_off);
+	mb.Hreg(REGISTER_MODE, cur_mode);
+	mb.Hreg(REGISTER_CUR_TEMP, cur_t);
+	mb.Hreg(REGISTER_SECONDARY_TEMP, cur_t);
+	if (WiFi.status() != WL_CONNECTED)
+	{
+		// no wifi
+		Serial.println("No WiFi connection");
+		ESP.restart();
+	}
+}