From e7b1092530ada20fa52210ea51c0ab4ecb01025b Mon Sep 17 00:00:00 2001
From: Merlin <Kahlen.Merlin@icloud.com>
Date: Sat, 27 Jun 2026 00:35:35 +0200
Subject: [PATCH] Software push v0.1

---
 Software/RT26301.ino | 224 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 224 insertions(+)
 create mode 100644 Software/RT26301.ino

diff --git a/Software/RT26301.ino b/Software/RT26301.ino
new file mode 100644
index 0000000..5ab1b0b
--- /dev/null
+++ b/Software/RT26301.ino
@@ -0,0 +1,224 @@
+#include <OneWire.h>
+#include <DallasTemperature.h>
+#include <Wire.h>
+
+OneWire ow0(8);  // GP0
+OneWire ow1(9);  // GP1
+
+#define UART_TX       0
+#define UART_RX       1
+#define FRAM_ADDR 0x50
+#define FRAM_SIZE 32768
+
+DallasTemperature ds0(&ow0);
+DallasTemperature ds1(&ow1);
+
+volatile int resolution = 12;
+volatile int cuton0 = 30;
+volatile int cutoff0 = 33;
+volatile int cuton1 = 30;
+volatile int cutoff1 = 33;
+int res = 12;
+
+void fram_init()
+{
+  Wire.setSDA(12);
+  Wire.setSCL(13);
+  Wire.begin();
+}
+
+void fram_write(uint16_t addr, uint8_t data)
+{
+  if (addr >= FRAM_SIZE) return;
+
+  Wire.beginTransmission(FRAM_ADDR);
+  Wire.write(addr >> 8);     // High byte Adresse
+  Wire.write(addr & 0xFF);   // Low byte Adresse
+  Wire.write(data);
+  Wire.endTransmission();
+}
+
+uint8_t fram_read(uint16_t addr)
+{
+  if (addr >= FRAM_SIZE) return 0;
+
+  Wire.beginTransmission(FRAM_ADDR);
+  Wire.write(addr >> 8);
+  Wire.write(addr & 0xFF);
+  Wire.endTransmission(false);
+
+  Wire.requestFrom(FRAM_ADDR, 1);
+
+  if (Wire.available())
+    return Wire.read();
+
+  return 0;
+}
+
+void setup() {
+  Serial1.setTX(0);   // GP0
+  Serial1.setRX(1);   // GP1
+  Serial1.begin(115200);
+  pinMode(10, OUTPUT);
+  digitalWrite(10, HIGH);
+  pinMode(11, OUTPUT);
+  digitalWrite(11, HIGH);
+
+  fram_init();
+  cuton0 = fram_read(1);
+  cutoff0 = fram_read(2);
+  cuton1 = fram_read(3);
+  cutoff1 = fram_read(4);
+  resolution = fram_read(5);
+
+  ds0.begin();
+  ds1.begin();
+
+  ds0.setWaitForConversion(false);
+  ds1.setWaitForConversion(false);
+
+  ds0.setResolution(resolution);
+  ds1.setResolution(resolution);
+}
+
+void loop() {
+    ds0.requestTemperatures();
+    ds1.requestTemperatures();
+    switch(resolution){
+      case 9:
+        delay(100);
+        break;
+      case 10:
+        delay(190);
+        break;
+      case 11:
+        delay(375);
+        break;
+      case 12:
+        delay(750);
+        break;
+    }
+    float t0 = ds0.getTempCByIndex(0);
+    float t1 = ds1.getTempCByIndex(0);
+    if(t1 <= cuton0){
+      digitalWrite(10, HIGH);
+    }
+    if(t0 <= cuton1){
+      digitalWrite(11, HIGH);
+    }
+    if(t1 >= cutoff0){
+      digitalWrite(10, LOW);
+    }
+    if(t0 >= cutoff1){
+      digitalWrite(11, LOW);
+    }
+    if(t0 != -127 || t1 != -127){
+      Serial1.print(t0, 4);
+      Serial1.print(";");
+      Serial1.println(t1, 4);
+      Serial1.flush();
+      if(res != resolution){
+        ds0.setResolution(resolution);
+        ds1.setResolution(resolution);
+        res = resolution;
+      }
+    }
+
+  static String cmd;
+
+  while (Serial1.available()) {
+    char c = Serial1.read();
+
+    if (c == '\n' || c == '\r') {
+
+      if (cmd.startsWith("res:")) {
+
+        int newRes = cmd.substring(4).toInt();
+
+        if (newRes >= 9 && newRes <= 12) {
+
+          resolution = newRes;
+          Serial1.print("OK RES=");
+          Serial1.println(resolution);
+          Serial1.flush();
+          fram_write(5,resolution);
+        } else {
+          Serial1.println("ERR");
+          Serial1.flush();
+        }
+      }
+
+      if (cmd.startsWith("cuton0:")) {
+
+        int newcuton0 = cmd.substring(7).toInt();
+
+        if (newcuton0 >= -55 && newcuton0 <= 125) {
+
+          cuton0 = newcuton0;
+          Serial1.print("OK cuton0=");
+          Serial1.println(cuton0);
+          Serial1.flush();
+          fram_write(1,cuton0);
+        } else {
+          Serial1.println("ERR");
+          Serial1.flush();
+        }
+      }
+
+      if (cmd.startsWith("cutoff0:")) {
+
+        int newcutoff0 = cmd.substring(8).toInt();
+
+        if (newcutoff0 >= -55 && newcutoff0 <= 125) {
+
+          cutoff0 = newcutoff0;
+          Serial1.print("OK cutoff0=");
+          Serial1.println(cutoff0);
+          Serial1.flush();
+          fram_write(2,cutoff0);
+        } else {
+          Serial1.println("ERR");
+          Serial1.flush();
+        }
+      }
+
+      if (cmd.startsWith("cuton1:")) {
+
+        int newcuton1 = cmd.substring(7).toInt();
+
+        if (newcuton1 >= -55 && newcuton1 <= 125) {
+
+          cuton1 = newcuton1;
+          Serial1.print("OK cuton1=");
+          Serial1.println(cuton1);
+          Serial1.flush();
+          fram_write(3,cuton1);
+        } else {
+          Serial1.println("ERR");
+          Serial1.flush();
+        }
+      }
+
+      if (cmd.startsWith("cutoff1:")) {
+
+        int newcutoff1 = cmd.substring(8).toInt();
+
+        if (newcutoff1 >= -55 && newcutoff1 <= 125) {
+
+          cutoff1 = newcutoff1;
+          Serial1.print("OK cutoff1=");
+          Serial1.println(cutoff1);
+          Serial1.flush();
+          fram_write(4,cutoff1);
+        } else {
+          Serial1.println("ERR");
+          Serial1.flush();
+        }
+      }
+
+      cmd = "";
+    } else {
+      cmd += c;
+    }
+  }
+}
\ No newline at end of file