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milesburtonmilesburton
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Merge pull request #105 from RobTillaart/master
Created 2 examples of how to use the Alarm field as an ID
2 parents b342b5f + b93e549 commit 9cc81f0

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‎examples/UserDataDemo/UserDataDemo.ino‎

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//
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// FILE: UserDataDemo.ino
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.0
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// PURPOSE: use of alarm field as user identification demo
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// DATE: 2019-12-23
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// URL:
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//
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// Released to the public domain
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//
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#include <OneWire.h>
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#include <DallasTemperature.h>
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#define ONE_WIRE_BUS 2
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OneWire oneWire(ONE_WIRE_BUS);
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DallasTemperature sensors(&oneWire);
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uint8_t deviceCount = 0;
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// Add 4 prepared sensors to the bus
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// use the UserDataWriteBatch demo to prepare 4 different labeled sensors
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struct
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{
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int id;
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DeviceAddress addr;
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} T[4];
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float getTempByID(int id)
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{
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for (uint8_t index = 0; index < deviceCount; index++)
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{
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if (T[index].id == id)
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{
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return sensors.getTempC(T[index].addr);
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}
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}
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return -999;
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}
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void printAddress(DeviceAddress deviceAddress)
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{
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for (uint8_t i = 0; i < 8; i++)
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{
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// zero pad the address if necessary
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if (deviceAddress[i] < 16) Serial.print("0");
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Serial.print(deviceAddress[i], HEX);
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}
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}
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void setup(void)
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{
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Serial.begin(115200);
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Serial.println(__FILE__);
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Serial.println("Dallas Temperature Demo");
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sensors.begin();
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// count devices
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deviceCount = sensors.getDeviceCount();
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Serial.print("#devices: ");
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Serial.println(deviceCount);
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// Read ID's per sensor
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// and put them in T array
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for (uint8_t index = 0; index < deviceCount; index++)
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{
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// go through sensors
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sensors.getAddress(T[index].addr, index);
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T[index].id = sensors.getUserData(T[index].addr);
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}
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// Check all 4 sensors are set
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for (uint8_t index = 0; index < deviceCount; index++)
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{
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Serial.println();
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Serial.println(T[index].id);
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printAddress(T[index].addr);
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Serial.println();
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}
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Serial.println();
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}
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void loop(void)
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{
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Serial.println();
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Serial.print(millis());
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Serial.println("\treq temp");
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sensors.requestTemperatures();
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Serial.print(millis());
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Serial.println("\tGet temp by address");
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for (int i = 0; i < 4; i++)
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{
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Serial.print(millis());
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Serial.print("\t temp:\t");
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Serial.println(sensors.getTempC(T[i].addr));
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}
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Serial.print(millis());
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Serial.println("\tGet temp by ID"); // assume ID = 0, 1, 2, 3
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for (int id = 0; id < 4; id++)
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{
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Serial.print(millis());
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Serial.print("\t temp:\t");
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Serial.println(getTempByID(id));
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}
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delay(1000);
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}
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// END OF FILE

‎examples/UserDataWriteBatch/UserDataWriteBatch.ino‎

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//
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// FILE: UserDataWriteBatch.ino
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// AUTHOR: Rob Tillaart
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// VERSION: 0.1.0
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// PURPOSE: use of alarm field as user identification demo
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// DATE: 2019-12-23
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// URL:
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//
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// Released to the public domain
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//
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#include <OneWire.h>
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#include <DallasTemperature.h>
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#define ONE_WIRE_BUS 2
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OneWire oneWire(ONE_WIRE_BUS);
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DallasTemperature sensors(&oneWire);
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uint8_t deviceCount = 0;
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void printAddress(DeviceAddress deviceAddress)
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{
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for (uint8_t i = 0; i < 8; i++)
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{
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// zero pad the address if necessary
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if (deviceAddress[i] < 16) Serial.print("0");
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Serial.print(deviceAddress[i], HEX);
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}
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}
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void setup(void)
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{
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Serial.begin(115200);
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Serial.println(__FILE__);
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Serial.println("Write user ID to DS18B20\n");
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sensors.begin();
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// count devices
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deviceCount = sensors.getDeviceCount();
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Serial.print("#devices: ");
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Serial.println(deviceCount);
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Serial.println();
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Serial.println("current ID's");
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for (uint8_t index = 0; index < deviceCount; index++)
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{
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DeviceAddress t;
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sensors.getAddress(t, index);
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printAddress(t);
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Serial.print("\t\tID: ");
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int id = sensors.getUserData(t);
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Serial.println(id);
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}
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Serial.println();
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Serial.print("Enter ID for batch: ");
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int c = 0;
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int id = 0;
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while (c != '\n' && c != '\r')
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{
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c = Serial.read();
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switch(c)
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{
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case '0'...'9':
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id *= 10;
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id += (c - '0');
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break;
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default:
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break;
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}
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}
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Serial.println();
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Serial.println(id);
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Serial.println();
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Serial.println("Start labeling ...");
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for (uint8_t index = 0; index < deviceCount; index++)
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{
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Serial.print(".");
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DeviceAddress t;
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sensors.getAddress(t, index);
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sensors.setUserData(t, id);
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}
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Serial.println();
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Serial.println();
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Serial.println("Show results ...");
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for (uint8_t index = 0; index < deviceCount; index++)
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{
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DeviceAddress t;
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sensors.getAddress(t, index);
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printAddress(t);
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Serial.print("\t\tID: ");
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int id = sensors.getUserData(t);
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Serial.println(id);
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}
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Serial.println("Done ...");
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}
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void loop(void) {}
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// END OF FILE

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