added stress tester

Examples/ESPNOW_Stress_Test/ESPNOW_Stress_Test.ino

@@ -0,0 +1,19 @@
+//  FARM DATA RELAY SYSTEM
+//
+//  ESP-NOW Stress Tester or "Spammer"
+//  
+//  Sends ESP-NOW packets at approximately 60Hz.
+//
+
+#include "fdrs_sensor.h"
+
+void setup() {
+  beginFDRS();
+}
+void loop() {
+  for (int i=0; i < 255; i++) {
+    loadFDRS(float(i), IT_T);
+    sendFDRS();
+    delay(15);
+  }
+}

Examples/ESPNOW_Stress_Test/fdrs_sensor.h

@@ -0,0 +1,178 @@
+//  FARM DATA RELAY SYSTEM
+//
+//  "fdrs_sensor.h"
+//
+//  Developed by Timm Bogner (timmbogner@gmail.com) for Sola Gratia Farm in Urbana, Illinois, USA.
+//
+#include "sensor_setup.h"
+#if defined(ESP8266)
+#include <ESP8266WiFi.h>
+#include <espnow.h>
+#elif defined(ESP32)
+#include <esp_now.h>
+#include <WiFi.h>
+#include <esp_wifi.h>
+#endif
+#ifdef USE_LORA
+#include <LoRa.h>
+#endif
+
+#ifdef GLOBALS
+#define FDRS_BAND GLOBAL_BAND
+#define FDRS_SF GLOBAL_SF
+#else
+#define FDRS_BAND BAND
+#define FDRS_SF SF
+#endif
+
+#ifdef DEBUG
+#define DBG(a) (Serial.println(a))
+#else
+#define DBG(a)
+#endif
+
+#define STATUS_T    0  // Status 
+#define TEMP_T      1  // Temperature 
+#define TEMP2_T     2  // Temperature #2
+#define HUMIDITY_T  3  // Relative Humidity 
+#define PRESSURE_T  4  // Atmospheric Pressure 
+#define LIGHT_T     5  // Light (lux) 
+#define SOIL_T      6  // Soil Moisture 
+#define SOIL2_T     7  // Soil Moisture #2 
+#define SOILR_T      8 // Soil Resistance 
+#define SOILR2_T     9 // Soil Resistance #2 
+#define OXYGEN_T    10 // Oxygen 
+#define CO2_T       11 // Carbon Dioxide
+#define WINDSPD_T   12 // Wind Speed
+#define WINDHDG_T   13 // Wind Direction
+#define RAINFALL_T  14 // Rainfall
+#define MOTION_T    15 // Motion
+#define VOLTAGE_T   16 // Voltage
+#define VOLTAGE2_T  17 // Voltage #2
+#define CURRENT_T   18 // Current
+#define CURRENT2_T  19 // Current #2
+#define IT_T        20 // Iterations
+
+#define MAC_PREFIX  0xAA, 0xBB, 0xCC, 0xDD, 0xEE  // Should only be changed if implementing multiple FDRS systems.
+
+typedef struct __attribute__((packed)) DataReading {
+  float d;
+  uint16_t id;
+  uint8_t t;
+
+} DataReading;
+
+const uint16_t espnow_size = 250 / sizeof(DataReading);
+uint8_t gatewayAddress[] = {MAC_PREFIX, GTWY_MAC};
+uint8_t gtwyAddress[] = {gatewayAddress[3], gatewayAddress[4], GTWY_MAC};
+uint8_t LoRaAddress[] = {0x42, 0x00};
+
+uint32_t wait_time = 0;
+DataReading fdrsData[espnow_size];
+uint8_t data_count = 0;
+
+void beginFDRS() {
+#ifdef DEBUG
+  Serial.begin(115200);
+#endif
+  DBG("FDRS Sensor ID " + String(READING_ID) + " initializing...");
+  DBG(" Gateway: " + String (GTWY_MAC, HEX));
+#ifdef POWER_CTRL
+  DBG("Powering up the sensor array!");
+  pinMode(POWER_CTRL, OUTPUT);
+  digitalWrite(POWER_CTRL, 1);
+#endif
+  // Init ESP-NOW for either ESP8266 or ESP32 and set MAC address
+#ifdef USE_ESPNOW
+  DBG("Initializing ESP-NOW!");
+  WiFi.mode(WIFI_STA);
+  WiFi.disconnect();
+#if defined(ESP8266)
+  if (esp_now_init() != 0) {
+    return;
+  }
+  esp_now_set_self_role(ESP_NOW_ROLE_COMBO);
+  // Register peers
+  esp_now_add_peer(gatewayAddress, ESP_NOW_ROLE_COMBO, 0, NULL, 0);
+#elif defined(ESP32)
+  if (esp_now_init() != ESP_OK) {
+    DBG("Error initializing ESP-NOW");
+    return;
+  }
+  esp_now_peer_info_t peerInfo;
+  peerInfo.ifidx = WIFI_IF_STA;
+  peerInfo.channel = 0;
+  peerInfo.encrypt = false;
+  // Register first peer
+  memcpy(peerInfo.peer_addr, gatewayAddress, 6);
+  if (esp_now_add_peer(&peerInfo) != ESP_OK) {
+    DBG("Failed to add peer");
+    return;
+  }
+#endif
+  DBG(" ESP-NOW Initialized.");
+#endif
+#ifdef USE_LORA
+  DBG("Initializing LoRa!");
+  DBG(BAND);
+  DBG(SF);
+#ifndef __AVR__
+  SPI.begin(SCK, MISO, MOSI, SS);
+#endif
+  LoRa.setPins(SS, RST, DIO0);
+  if (!LoRa.begin(FDRS_BAND)) {
+    while (1);
+  }
+  LoRa.setSpreadingFactor(FDRS_SF);
+  DBG(" LoRa Initialized.");
+#endif
+}
+void transmitLoRa(uint8_t* mac, DataReading * packet, uint8_t len) {
+#ifdef USE_LORA
+  uint8_t pkt[5 + (len * sizeof(DataReading))];
+  memcpy(&pkt, mac, 3);  //
+  memcpy(&pkt[3], &LoRaAddress, 2);
+  memcpy(&pkt[5], packet, len * sizeof(DataReading));
+  LoRa.beginPacket();
+  LoRa.write((uint8_t*)&pkt, sizeof(pkt));
+  LoRa.endPacket();
+#endif
+}
+void sendFDRS() {
+  DBG("Sending FDRS Packet!");
+#ifdef USE_ESPNOW
+  esp_now_send(gatewayAddress, (uint8_t *) &fdrsData, data_count * sizeof(DataReading));
+  delay(5);
+  DBG(" ESP-NOW sent.");
+#endif
+#ifdef USE_LORA
+  transmitLoRa(gtwyAddress, fdrsData, data_count);
+  DBG(" LoRa sent.");
+#endif
+  data_count = 0;
+}
+void loadFDRS(float d, uint8_t t) {
+  DBG("Data loaded. Type: " + String(t));
+  if (data_count > espnow_size) sendFDRS();
+  DataReading dr;
+  dr.id = READING_ID;
+  dr.t = t;
+  dr.d = d;
+  fdrsData[data_count] = dr;
+  data_count++;
+}
+void sleepFDRS(int sleep_time) {
+  DBG("Sleepytime!");
+#ifdef DEEP_SLEEP
+  DBG(" Deep sleeping.");
+#ifdef ESP32
+  esp_sleep_enable_timer_wakeup(sleep_time * 1000000);
+  esp_deep_sleep_start();
+#endif
+#ifdef ESP8266
+  ESP.deepSleep(sleep_time * 1000000);
+#endif
+#endif
+  DBG(" Delaying.");
+  delay(sleep_time * 1000);
+}

Examples/ESPNOW_Stress_Test/sensor_setup.h

@@ -0,0 +1,29 @@
+//  FARM DATA RELAY SYSTEM
+//
+//  Sensor Configuration
+//  (This file will soon be known as 'sensor_config.h')
+//
+
+//#include <fdrs_globals.h> //Uncomment when you install the globals file
+
+#define READING_ID    3   //Unique ID for this sensor
+#define GTWY_MAC      0x04 //Address of the nearest gateway
+
+#define USE_ESPNOW
+//#define USE_LORA
+#define DEEP_SLEEP
+//#define POWER_CTRL    14
+//#define DEBUG
+
+//LoRa Configuration
+#define SCK 5
+#define MISO 19
+#define MOSI 27
+#define SS 18
+#define RST 14
+#define DIO0 26
+//433E6 for Asia
+//866E6 for Europe
+//915E6 for North America
+#define BAND 915E6
+#define SF 7