Added HardCoded ROMID's (Untested)

Author: clavinohou

platformio.ini

@@ -134,7 +134,7 @@ build_src_filter =
   -<main.cpp>
   -<main_test_ethernet.cpp>
   -<main_can_test.cpp>
-  +<TempSensDriverTest.cpp>
+  +<TempSensHardROMTest.cpp>
   +<DS2480B.cpp>
 
 build_flags =

src/DS2480B.cpp

@@ -162,7 +162,9 @@ void DS2480B::depower()
 
 #if ONEWIRE_SEARCH
 
-void DS2480B::reset_search()
+//Removing Search Algorithm
+
+/* void DS2480B::reset_search() 
 {
 	LastDiscrepancy = 0;
 	LastDeviceFlag = FALSE;
@@ -204,6 +206,7 @@ uint8_t DS2480B::search(uint8_t *newAddr)
 		_port->write((uint8_t)0x00);
 	}
 
+<<<<<<< HEAD
 	for(int i = 0; i < 16; i++){ //Second, read the returned bytes
 		ROM[i] = _port->read();
 	}
@@ -215,6 +218,20 @@ uint8_t DS2480B::search(uint8_t *newAddr)
 	//return;
 	return ROM[16];
 }
+=======
+	if (!search_result || !ROM_NO[0])
+	{
+		Serial.println("No Device Found");
+		LastDiscrepancy = 0;
+		LastDeviceFlag = FALSE;
+		LastFamilyDiscrepancy = 0;
+		search_result = FALSE;
+	} 
+	for (int i = 0; i < 8; i++) newAddr[i] = ROM_NO[i];
+	return search_result; 
+} */ 
+
+>>>>>>> 65b1665 (Added HardCoded ROMID's (Untested))
 
 #endif
 

src/TempSensDriverTest.cpp

@@ -29,20 +29,31 @@ void loop(void) {
   byte i;
   byte present = 0;
   byte data[12];
-  byte addr[8] = {};
+  byte addr[8]{};
+  
   float celsius, fahrenheit;
 
-  // Checks if devices (temp sensors) exist on one wire bus
-  if (!ds.search(addr)) {
-    Serial.println("No more addresses.");
-    Serial.println();
-    ds.reset_search();
-    delay(1000);
-    return;
+  //not really syre what this for loop is for, looks like its printing the ID's but addr is empty?
+    for(i = 0; i < 8; i++) {
+    Serial.write(' ');
+    Serial.print(addr[i], HEX);
   }
+   
 
+  // Checks if devices (temp sensors) exist on one wire bus
+  //Removed because no search algorithm
+    /*  if (!ds.search(addr)) {
+      Serial.println("No more addresses.");
+      Serial.println();
+      ds.reset_search();
+      delay(1000);
+      return;
+    }
+    */
+  
   // Prints out ROM ID of each temp sensor
   // For loop iterates 8 times for each byte of ROM ID and prints each byte
+
   Serial.print("ROM =");
   for(i = 0; i < 8; i++) {
     Serial.write(' ');
@@ -55,7 +66,11 @@ void loop(void) {
     Serial.println("CRC is not valid!");
     return;
   }
+
   Serial.println();
+
+  // We know the chip is DS18B20, just clarifying through Serial Monitor
+  Serial.println("Chip = DS18B20");
 
   // Reset the one-wire bus
   ds.reset();

src/TempSensHardROMTest.cpp

@@ -0,0 +1,123 @@
+//This file is a rewrite of "TempSensDriverTest.cpp" that does not rely on the search algorithm.
+
+#include <Arduino.h>
+#include "DS2480B.h"
+
+// Create DS2480B object, passing Serial2 by reference
+DS2480B ds(Serial2);
+
+void setup(void) {
+  // Begin serial communication
+  Serial.begin(115200);
+  Serial2.begin(9600);  // DS2480B communicates at 19200 baud
+  
+  delay(1000);  // Wait for serial to initialize
+  Serial.println("Serial Successfully Initialized");
+  // ds.begin function resets transceiver and puts it in command mode
+  ds.begin();
+  ds.reset();
+  Serial.println("DS2480B initialized!");
+}
+
+void loop(void) {
+  byte i;
+  byte present = 0;
+  byte data[12];
+  byte addr[8]{};
+  
+  int RomIDArr[48] = {
+    40,215,97,17,17,0,0,213,  //RomID1 [0-7]
+    40,198,156,16,17,0,0,124, //RomID2 [8-15] 
+    40,148,57,17,17,0,0,82,   //RomID3 [16-23]
+    40,22,55,17,17,0,0,116,   //RomID4 [24-31]
+    40,34,54,17,17,0,0,136,   //RomID5 [32-39]
+    40,246,127,16,17,0,0,5    //RomID6 [40-47]  
+  };
+
+  float celsius, fahrenheit;
+
+  for (int i = 0; i < 6; i++){
+    //First lets load the rom ID into addr[]
+
+    for (int j = 0; j < 8; j++){
+        addr[j] = (byte)(RomIDArr[j + (8 * i)]); //casts into a byte and writes into corresponding addr.
+    }
+
+    Serial.print("ROM =");
+    for(i = 0; i < 8; i++) {
+        Serial.write(' ');
+        Serial.print(addr[i], HEX);
+    }
+    Serial.println("We are looking at ROMID:" + ' ' +(i + 1));
+
+    //Rest of code should be identical from here on
+
+    // The last byte of ROM ID should equal the CRC (derived from first 7 bytes)
+    // This checks if the CRCs align
+    if (DS2480B::crc8(addr, 7) != addr[7]) {
+        Serial.println("CRC is not valid!");
+        return;
+    }
+
+    Serial.println();
+
+    // We know the chip is DS18B20, just clarifying through Serial Monitor
+    Serial.println("Chip = DS18B20");
+    
+    // Reset the one-wire bus
+    ds.reset();
+    
+    // Brief delay to allow bus to stabilize
+    delay(100);
+    
+    // Reset again and select the device
+    ds.reset();
+    ds.select(addr);
+    ds.write(0x44);  // Start temperature conversion command
+
+    // Wait for conversion to complete
+    // DS18B20 takes ~750ms for 12-bit conversion (default resolution)
+    // Adjustable based on your resolution needs:
+    // - 93.75ms for 9-bit
+    // - 187.5ms for 10-bit
+    // - 375ms for 11-bit
+    // - 750ms for 12-bit (default)
+    delay(1000);
+
+    // Read the temperature data
+    present = ds.reset();
+    ds.select(addr);
+    ds.write(0xBE);  // Read Scratchpad command
+
+    Serial.print("  Data = ");
+    Serial.print(present, HEX);
+    Serial.print(" ");
+
+    // Read 9 bytes of data from the scratchpad
+    for(i = 0; i < 9; i++) {
+        data[i] = ds.read();
+        Serial.print(data[i], HEX);
+        Serial.print(" ");
+    }
+
+    Serial.print(" CRC=");
+    Serial.print(DS2480B::crc8(data, 8), HEX);
+    Serial.println();
+
+    // Convert the data to actual temperature
+    // The result is a 16-bit signed integer stored in bytes 0 and 1
+    // Byte 0 = LSB (lower 8 bits), Byte 1 = MSB (upper 8 bits)
+    int16_t raw = (data[1] << 8) | data[0];
+
+    // DS18B20 always returns 12-bit resolution by default
+    // Each LSB = 0.0625°C, so divide by 16
+    celsius = (float)raw / 16.0;
+    fahrenheit = celsius * 1.8 + 32.0;
+
+    Serial.print("  Temperature = ");
+    Serial.print(celsius);
+    Serial.print(" Celsius, ");
+    Serial.print(fahrenheit);
+    Serial.println(" Fahrenheit");
+    }   
+}