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Timm Bogner 2021-03-27 15:19:18 -05:00 committed by GitHub
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FDRS_Sensor_Dallas/FDRS_Sensor_Dallas.ino
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// FARM DATA RELAY SYSTEM
//
// DALLAS DS18B20 SENSOR MODULE
//
// Developed by Timm Bogner (bogner1@gmail.com) for Sola Gratia Farm in Urbana, Illinois, USA.
// Each sensor is assigned a one-byte identifier.
#define SENSOR_ID 3
#define TERM_MAC 0x00 //Terminal MAC
#include <ESP8266WiFi.h>
#include <espnow.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#define ONE_WIRE_BUS 2
uint8_t broadcastAddress[] = {0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0x00};
int next_send = 0;
OneWire oneWire(ONE_WIRE_BUS); // Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
DallasTemperature sensors(&oneWire); // Pass our oneWire reference to Dallas Temperature.
typedef struct DataReading {
float t;
float h;
byte n;
} DataReading;
DataReading theData;
// Callback when data is sent
void OnDataSent(uint8_t *mac_addr, uint8_t sendStatus) {
Serial.print("Last Packet Send Status: ");
if (sendStatus == 0) {
Serial.println("Delivery success");
}
else {
Serial.println("Delivery fail");
}
}
void loadData() {
sensors.requestTemperatures();
theData.h = 0;
theData.t = sensors.getTempFByIndex(0);
theData.n = SENSOR_ID;
}
void setup() {
Serial.begin(115200);
WiFi.mode(WIFI_STA);
// Init ESP-NOW
if (esp_now_init() != 0) {
Serial.println("Error initializing ESP-NOW");
return;
}
esp_now_set_self_role(ESP_NOW_ROLE_CONTROLLER);
esp_now_register_send_cb(OnDataSent);
// Register peer
esp_now_add_peer(broadcastAddress, ESP_NOW_ROLE_SLAVE, 1, NULL, 0);
}
void loop() {
if (millis() > next_send) {
loadData();
esp_now_send(broadcastAddress, (uint8_t *) &theData, sizeof(theData));
next_send = millis() + 15000;
}
}