Add new code for battery validation, updated probe node code added base read me
This commit is contained in:
programmingPug
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<b>User Projects</b>
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<p>
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This folder contains user Projects files.
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EAGLE AutoRouter Statistics:
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Job : C:/Users/ckoch/Documents/EAGLE/projects/soilSensor.brd
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Start at : 16:06:15 (1/15/2025)
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End at : 16:06:22 (1/15/2025)
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Elapsed time : 00:00:03
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Signals : 11 RoutingGrid: 11 mil Layers: 2
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Connections : 13 predefined: 2 ( 3 Vias )
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Router memory : 107632
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Passname : TopRouter Route Optimize1 Optimize2 Optimize3 Optimize4 Optimize5 Optimize6 Optimize7 Optimize8 Optimize9Optimize10Optimize11Optimize12
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Time per pass : 00:00:02 00:00:00 00:00:00 00:00:00 00:00:01 00:00:00 00:00:00 00:00:00 00:00:00 00:00:00 00:00:00 00:00:00 00:00:00 00:00:00
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Number of Ripups : 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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max. Level : 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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max. Total : 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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Routed : 0 11 11 11 11 11 11 11 11 11 11 11 11 11
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Vias : 0 0 0 0 0 0 0 0 0 0 0 0 0 0
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Resolution : 15.4 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 % 100.0 %
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Final : 100.0% finished
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[Eagle]
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Version="09 06 02"
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Platform="Windows"
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Globals="Globals"
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Desktop="Desktop"
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[Globals]
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|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:170"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:171"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:172"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:173"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:174"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:175"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:86"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:176"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:177"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:179"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:180"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:181"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:182"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:183"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:184"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:188"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:189"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:87"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:190"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:191"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:192"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:193"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:194"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:195"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:196"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:197"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:198"
|
||||||
|
UsedLibraryUrn="urn:adsk.eagle:library:199"
|
||||||
|
|
||||||
|
[Win_1]
|
||||||
|
Type="Control Panel"
|
||||||
|
Number=0
|
||||||
|
|
||||||
|
[Desktop]
|
||||||
|
Screen="5120 1440"
|
||||||
|
Window="Win_1"
|
||||||
@@ -0,0 +1,9 @@
|
|||||||
|
building and deploying:
|
||||||
|
|
||||||
|
docker build -t houseplant-client:latest .
|
||||||
|
docker image tag houseplant-client 192.168.1.193:5000/houseplant-client
|
||||||
|
docker push 192.168.1.193:5000/houseplant-client
|
||||||
|
|
||||||
|
docker build --no-cache -t houseplant-api:latest .
|
||||||
|
docker image tag houseplant-api 192.168.1.193:5000/houseplant-api
|
||||||
|
docker push 192.168.1.193:5000/houseplant-api
|
||||||
@@ -0,0 +1,61 @@
|
|||||||
|
// XAIO-ESP32-C6 Battery Monitor with Averaged ADC Readings
|
||||||
|
// Measures the battery voltage via a resistor divider (two 220 kΩ resistors),
|
||||||
|
// averages 10 ADC readings, and reports the battery percentage.
|
||||||
|
// Battery assumed: single-cell LiPo with 3.0V (0%) to 4.2V (100%).
|
||||||
|
|
||||||
|
// ----- CONFIGURATION -----
|
||||||
|
const int analogPin = A0; // ADC pin connected to the resistor divider
|
||||||
|
const float adcRefVoltage = 3.3; // ADC reference voltage (Volts)
|
||||||
|
const int adcMaxValue = 4095; // Maximum ADC value (for 12-bit resolution)
|
||||||
|
const float voltageDividerFactor = 2.0; // Divider factor: battery voltage is divided by 2
|
||||||
|
|
||||||
|
// Battery voltage range settings (adjust as necessary)
|
||||||
|
const float batteryMinVoltage = 3.0; // Voltage corresponding to 0% battery
|
||||||
|
const float batteryMaxVoltage = 4.2; // Voltage corresponding to 100% battery
|
||||||
|
|
||||||
|
const int numSamples = 10; // Number of ADC samples to average
|
||||||
|
|
||||||
|
// ----- SETUP -----
|
||||||
|
void setup() {
|
||||||
|
Serial.begin(115200);
|
||||||
|
// If needed, additional ADC calibration or configuration can be added here
|
||||||
|
}
|
||||||
|
|
||||||
|
// ----- MAIN LOOP -----
|
||||||
|
void loop() {
|
||||||
|
long totalADC = 0;
|
||||||
|
|
||||||
|
// Take numSamples readings
|
||||||
|
for (int i = 0; i < numSamples; i++) {
|
||||||
|
totalADC += analogRead(analogPin);
|
||||||
|
delay(10); // Short delay between samples (adjust as needed)
|
||||||
|
}
|
||||||
|
|
||||||
|
// Calculate the average ADC value
|
||||||
|
float avgADC = totalADC / (float)numSamples;
|
||||||
|
|
||||||
|
// Convert the averaged ADC value to the measured voltage at the divider
|
||||||
|
float measuredVoltage = (avgADC / adcMaxValue) * adcRefVoltage;
|
||||||
|
|
||||||
|
// Calculate the actual battery voltage using the divider factor
|
||||||
|
float batteryVoltage = measuredVoltage * voltageDividerFactor;
|
||||||
|
|
||||||
|
// Map the battery voltage to a battery percentage using a linear mapping
|
||||||
|
float batteryPercent = ((batteryVoltage - batteryMinVoltage) / (batteryMaxVoltage - batteryMinVoltage)) * 100.0;
|
||||||
|
if (batteryPercent > 100.0) batteryPercent = 100.0;
|
||||||
|
if (batteryPercent < 0.0) batteryPercent = 0.0;
|
||||||
|
|
||||||
|
// Print the results to the Serial Monitor
|
||||||
|
Serial.print("Avg ADC Value: ");
|
||||||
|
Serial.print(avgADC, 2);
|
||||||
|
Serial.print(" | Divider Voltage: ");
|
||||||
|
Serial.print(measuredVoltage, 2);
|
||||||
|
Serial.print(" V | Battery Voltage: ");
|
||||||
|
Serial.print(batteryVoltage, 2);
|
||||||
|
Serial.print(" V | Battery Percent: ");
|
||||||
|
Serial.print(batteryPercent, 1);
|
||||||
|
Serial.println("%");
|
||||||
|
|
||||||
|
// Wait 2 seconds before the next reading
|
||||||
|
delay(2000);
|
||||||
|
}
|
||||||
@@ -1,8 +0,0 @@
|
|||||||
{
|
|
||||||
// Use IntelliSense to learn about possible attributes.
|
|
||||||
// Hover to view descriptions of existing attributes.
|
|
||||||
"version": "0.2.0",
|
|
||||||
"configurations": [
|
|
||||||
|
|
||||||
]
|
|
||||||
}
|
|
||||||
@@ -1,405 +0,0 @@
|
|||||||
#include <Arduino.h>
|
|
||||||
#include <BLEDevice.h>
|
|
||||||
#include <BLEServer.h>
|
|
||||||
#include <BLEUtils.h>
|
|
||||||
#include <BLE2902.h>
|
|
||||||
#include <EEPROM.h>
|
|
||||||
#include <esp_sleep.h>
|
|
||||||
|
|
||||||
// ======== BLE UUIDs ========
|
|
||||||
#define SERVICE_UUID "12345678-1234-1234-1234-123456789abc"
|
|
||||||
#define CHARACTERISTIC_UUID "abcd1234-5678-1234-5678-abcdef123456"
|
|
||||||
|
|
||||||
// ======== Hardware & ADC ========
|
|
||||||
#define MOISTURE_PIN A0
|
|
||||||
#define LED_PIN 2 // Example LED pin (built-in LED on many ESP32 boards)
|
|
||||||
#define BUTTON_PIN D4 // GPIO 4 for calibration button (recommended over GPIO 0)
|
|
||||||
|
|
||||||
// ======== Constants ========
|
|
||||||
const int DRY_VALUE_DEFAULT = 500;
|
|
||||||
const int WET_VALUE_DEFAULT = 200;
|
|
||||||
const int ADC_RESOLUTION = 10; // 10-bit ADC (0–1023)
|
|
||||||
|
|
||||||
// ======== Reading & Averaging ========
|
|
||||||
const int NUM_SAMPLES = 5; // Number of samples to average
|
|
||||||
const int SAMPLE_DELAY_MS = 50; // Delay between each sample (ms)
|
|
||||||
|
|
||||||
// ======== Connection Timeout Settings ========
|
|
||||||
const unsigned long CONNECTION_TIMEOUT_MS = 120000; // 2 minutes to establish connection
|
|
||||||
unsigned long connectionStartTime = 0;
|
|
||||||
bool connectionTimerStarted = false;
|
|
||||||
|
|
||||||
// ======== Sleep Settings ========
|
|
||||||
const uint64_t DEEP_SLEEP_DURATION_US = 60ULL * 60ULL * 1000000ULL; // 1 hour in microseconds
|
|
||||||
|
|
||||||
// ======== Calibration Variables ========
|
|
||||||
int dryValue = DRY_VALUE_DEFAULT; // Initialize with default dry value
|
|
||||||
int wetValue = WET_VALUE_DEFAULT; // Initialize with default wet value
|
|
||||||
|
|
||||||
// ======== Device Configuration ========
|
|
||||||
const char* deviceName = "003-SoilSensor"; // Default device name
|
|
||||||
|
|
||||||
// ======== EEPROM Addresses ========
|
|
||||||
const int EEPROM_SIZE = 512;
|
|
||||||
const int EEPROM_DRY_ADDRESS = 0; // Bytes 0-3
|
|
||||||
const int EEPROM_WET_ADDRESS = 4; // Bytes 4-7
|
|
||||||
|
|
||||||
// ======== BLE Objects ========
|
|
||||||
BLEServer* pServer = nullptr;
|
|
||||||
BLECharacteristic* pCharacteristic = nullptr;
|
|
||||||
|
|
||||||
// ======== Device State Flags ========
|
|
||||||
bool isConnected = false;
|
|
||||||
bool dataSent = false;
|
|
||||||
|
|
||||||
// ======== Calibration Variables ========
|
|
||||||
enum DeviceState {
|
|
||||||
STATE_NORMAL,
|
|
||||||
STATE_CALIBRATE_NOT_IN_SOIL,
|
|
||||||
STATE_CALIBRATE_IN_SOIL
|
|
||||||
};
|
|
||||||
|
|
||||||
DeviceState currentState = STATE_NORMAL;
|
|
||||||
int calibrationCount = 0;
|
|
||||||
|
|
||||||
// ======== Button Handling ========
|
|
||||||
const unsigned long DEBOUNCE_DELAY = 50; // 50ms debounce delay
|
|
||||||
bool lastButtonState = HIGH; // Assuming pull-up resistor
|
|
||||||
bool buttonPressed = false;
|
|
||||||
unsigned long lastDebounceTime = 0;
|
|
||||||
|
|
||||||
// ======== LED Blinking Parameters ========
|
|
||||||
unsigned long previousBlinkTime = 0;
|
|
||||||
const unsigned long BLINK_ON_DURATION = 200; // 200ms ON
|
|
||||||
const unsigned long BLINK_OFF_DURATION = 100; // 100ms OFF
|
|
||||||
bool ledState = false;
|
|
||||||
|
|
||||||
// ======== Function Prototypes ========
|
|
||||||
int readSoilMoisture();
|
|
||||||
int getAveragedMoisture(int numSamples);
|
|
||||||
void enterDeepSleep();
|
|
||||||
void handleCalibrationButtonPress();
|
|
||||||
void readCalibrationValues();
|
|
||||||
void writeCalibrationValues(int dry, int wet);
|
|
||||||
void checkButtonPress();
|
|
||||||
void updateLED();
|
|
||||||
|
|
||||||
// ======== Custom Server Callbacks ========
|
|
||||||
class MyServerCallbacks : public BLEServerCallbacks {
|
|
||||||
void onConnect(BLEServer* pServer) override {
|
|
||||||
Serial.println("Client connected.");
|
|
||||||
isConnected = true;
|
|
||||||
|
|
||||||
// Turn on LED to indicate active state
|
|
||||||
digitalWrite(LED_PIN, HIGH);
|
|
||||||
|
|
||||||
// Stop connection timeout timer
|
|
||||||
connectionTimerStarted = false;
|
|
||||||
connectionStartTime = 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
void onDisconnect(BLEServer* pServer) override {
|
|
||||||
Serial.println("Client disconnected.");
|
|
||||||
isConnected = false;
|
|
||||||
dataSent = false;
|
|
||||||
|
|
||||||
// Restart advertising to allow new connections
|
|
||||||
pServer->startAdvertising();
|
|
||||||
|
|
||||||
// Restart connection timeout timer
|
|
||||||
connectionTimerStarted = true;
|
|
||||||
connectionStartTime = millis();
|
|
||||||
|
|
||||||
// Turn off LED to indicate sleep state
|
|
||||||
digitalWrite(LED_PIN, LOW);
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
// ======== Sensor Reading Functions ========
|
|
||||||
/**
|
|
||||||
* Perform a single soil moisture reading (0–100%).
|
|
||||||
*/
|
|
||||||
int readSoilMoisture() {
|
|
||||||
int rawValue = analogRead(MOISTURE_PIN);
|
|
||||||
int percent = map(rawValue, dryValue, wetValue, 0, 100);
|
|
||||||
return constrain(percent, 0, 100);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Gathers multiple samples, applies a small delay between each,
|
|
||||||
* averages them, and returns the final moisture value.
|
|
||||||
*/
|
|
||||||
int getAveragedMoisture(int numSamples) {
|
|
||||||
long sum = 0;
|
|
||||||
|
|
||||||
for (int i = 0; i < numSamples; i++) {
|
|
||||||
sum += readSoilMoisture();
|
|
||||||
delay(SAMPLE_DELAY_MS); // Small delay between samples
|
|
||||||
}
|
|
||||||
|
|
||||||
int avg = (int)(sum / numSamples);
|
|
||||||
return avg;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Enter deep sleep mode for the defined duration.
|
|
||||||
*/
|
|
||||||
void enterDeepSleep() {
|
|
||||||
Serial.println("Entering deep sleep for 1 hour...");
|
|
||||||
|
|
||||||
// Turn off LED to indicate sleep state
|
|
||||||
digitalWrite(LED_PIN, LOW);
|
|
||||||
|
|
||||||
// Disable BLE before sleeping
|
|
||||||
BLEDevice::deinit(true);
|
|
||||||
|
|
||||||
// Configure deep sleep wake-up time
|
|
||||||
esp_sleep_enable_timer_wakeup(DEEP_SLEEP_DURATION_US);
|
|
||||||
|
|
||||||
// Enter deep sleep
|
|
||||||
esp_deep_sleep_start();
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Handle calibration button presses to manage calibration steps.
|
|
||||||
*/
|
|
||||||
void handleCalibrationButtonPress() {
|
|
||||||
calibrationCount++;
|
|
||||||
|
|
||||||
switch (calibrationCount) {
|
|
||||||
case 1:
|
|
||||||
// Calibration Step 1: Record Dry Value
|
|
||||||
Serial.println("Calibration Step 1: Place device in dry soil and press button.");
|
|
||||||
currentState = STATE_CALIBRATE_NOT_IN_SOIL;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case 2:
|
|
||||||
// Calibration Step 2: Record Wet Value
|
|
||||||
Serial.println("Calibration Step 2: Place device in wet soil and press button.");
|
|
||||||
currentState = STATE_CALIBRATE_IN_SOIL;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case 3:
|
|
||||||
// Calibration Complete
|
|
||||||
Serial.println("Calibration Complete. Returning to normal operation.");
|
|
||||||
currentState = STATE_NORMAL;
|
|
||||||
calibrationCount = 0; // Reset for next calibration
|
|
||||||
break;
|
|
||||||
|
|
||||||
default:
|
|
||||||
// Reset Calibration
|
|
||||||
Serial.println("Calibration Reset. Returning to normal operation.");
|
|
||||||
currentState = STATE_NORMAL;
|
|
||||||
calibrationCount = 0;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
updateLED();
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Read calibration values from EEPROM.
|
|
||||||
*/
|
|
||||||
void readCalibrationValues() {
|
|
||||||
EEPROM.get(EEPROM_DRY_ADDRESS, dryValue);
|
|
||||||
EEPROM.get(EEPROM_WET_ADDRESS, wetValue);
|
|
||||||
|
|
||||||
// Validate calibration values
|
|
||||||
if (dryValue == 0xFFFFFFFF || wetValue == 0xFFFFFFFF) {
|
|
||||||
dryValue = DRY_VALUE_DEFAULT;
|
|
||||||
wetValue = WET_VALUE_DEFAULT;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Write calibration values to EEPROM.
|
|
||||||
*/
|
|
||||||
void writeCalibrationValues(int dry, int wet) {
|
|
||||||
EEPROM.put(EEPROM_DRY_ADDRESS, dry);
|
|
||||||
EEPROM.put(EEPROM_WET_ADDRESS, wet);
|
|
||||||
EEPROM.commit();
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Check for button presses with debouncing.
|
|
||||||
*/
|
|
||||||
void checkButtonPress() {
|
|
||||||
bool reading = digitalRead(BUTTON_PIN);
|
|
||||||
|
|
||||||
if (reading != lastButtonState) {
|
|
||||||
lastDebounceTime = millis();
|
|
||||||
}
|
|
||||||
|
|
||||||
if ((millis() - lastDebounceTime) > DEBOUNCE_DELAY) {
|
|
||||||
if (reading == LOW && lastButtonState == HIGH) {
|
|
||||||
buttonPressed = true;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
lastButtonState = reading;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Update LED based on the current state.
|
|
||||||
*/
|
|
||||||
void updateLED() {
|
|
||||||
// Reset LED parameters
|
|
||||||
previousBlinkTime = millis();
|
|
||||||
ledState = false;
|
|
||||||
|
|
||||||
switch (currentState) {
|
|
||||||
case STATE_NORMAL:
|
|
||||||
// LED is handled by BLE connection callbacks
|
|
||||||
digitalWrite(LED_PIN, LOW); // Ensure LED is off in normal mode
|
|
||||||
break;
|
|
||||||
|
|
||||||
case STATE_CALIBRATE_NOT_IN_SOIL:
|
|
||||||
// Solid LED to indicate calibration for dry soil
|
|
||||||
digitalWrite(LED_PIN, HIGH);
|
|
||||||
break;
|
|
||||||
|
|
||||||
case STATE_CALIBRATE_IN_SOIL:
|
|
||||||
// Start blinking in 2:1 ratio for wet soil calibration
|
|
||||||
digitalWrite(LED_PIN, HIGH); // Start with LED ON
|
|
||||||
ledState = true;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Initialize EEPROM and read calibration values.
|
|
||||||
*/
|
|
||||||
void initializeEEPROM() {
|
|
||||||
if (!EEPROM.begin(EEPROM_SIZE)) {
|
|
||||||
Serial.println("Failed to initialize EEPROM");
|
|
||||||
// Handle EEPROM initialization failure if necessary
|
|
||||||
}
|
|
||||||
readCalibrationValues();
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Update mapping based on calibrated dry and wet values.
|
|
||||||
*/
|
|
||||||
int mapMoisture(int rawValue) {
|
|
||||||
int percent = map(rawValue, dryValue, wetValue, 0, 100);
|
|
||||||
return constrain(percent, 0, 100);
|
|
||||||
}
|
|
||||||
|
|
||||||
// ======== Setup Function ========
|
|
||||||
void setup() {
|
|
||||||
// Initialize Serial
|
|
||||||
Serial.begin(115200);
|
|
||||||
delay(1000); // Allow time for serial to initialize
|
|
||||||
|
|
||||||
// Initialize LED pin
|
|
||||||
pinMode(LED_PIN, OUTPUT);
|
|
||||||
digitalWrite(LED_PIN, LOW); // LED off initially
|
|
||||||
|
|
||||||
// Initialize Button pin
|
|
||||||
pinMode(BUTTON_PIN, INPUT_PULLUP); // Use INPUT_PULLUP if using internal resistor
|
|
||||||
// If using external resistor, use INPUT instead:
|
|
||||||
// pinMode(BUTTON_PIN, INPUT);
|
|
||||||
|
|
||||||
// Initialize EEPROM
|
|
||||||
initializeEEPROM();
|
|
||||||
Serial.printf("Calibrated Dry Value: %d\n", dryValue);
|
|
||||||
Serial.printf("Calibrated Wet Value: %d\n", wetValue);
|
|
||||||
|
|
||||||
// Initialize BLE with deviceName variable
|
|
||||||
BLEDevice::init(deviceName); // Initialize BLE with the variable device name
|
|
||||||
pServer = BLEDevice::createServer();
|
|
||||||
pServer->setCallbacks(new MyServerCallbacks());
|
|
||||||
|
|
||||||
// Create BLE service
|
|
||||||
BLEService* pService = pServer->createService(SERVICE_UUID);
|
|
||||||
|
|
||||||
// Create BLE characteristic
|
|
||||||
pCharacteristic = pService->createCharacteristic(
|
|
||||||
CHARACTERISTIC_UUID,
|
|
||||||
BLECharacteristic::PROPERTY_READ | BLECharacteristic::PROPERTY_NOTIFY
|
|
||||||
);
|
|
||||||
|
|
||||||
// Add descriptor for notifications
|
|
||||||
pCharacteristic->addDescriptor(new BLE2902());
|
|
||||||
|
|
||||||
// Start the service
|
|
||||||
pService->start();
|
|
||||||
|
|
||||||
// Start advertising
|
|
||||||
pServer->getAdvertising()->addServiceUUID(SERVICE_UUID);
|
|
||||||
pServer->getAdvertising()->setScanResponse(true);
|
|
||||||
pServer->getAdvertising()->start();
|
|
||||||
|
|
||||||
Serial.println("BLE server is running...");
|
|
||||||
|
|
||||||
// Start connection timeout timer
|
|
||||||
connectionTimerStarted = true;
|
|
||||||
connectionStartTime = millis();
|
|
||||||
|
|
||||||
// Initialize state and LED
|
|
||||||
currentState = STATE_NORMAL;
|
|
||||||
calibrationCount = 0;
|
|
||||||
updateLED();
|
|
||||||
}
|
|
||||||
|
|
||||||
// ======== Loop Function ========
|
|
||||||
void loop() {
|
|
||||||
// Check for button presses
|
|
||||||
checkButtonPress();
|
|
||||||
|
|
||||||
if (buttonPressed) {
|
|
||||||
buttonPressed = false;
|
|
||||||
if (currentState != STATE_NORMAL) {
|
|
||||||
// Handle calibration step
|
|
||||||
handleCalibrationButtonPress();
|
|
||||||
} else {
|
|
||||||
// Initiate calibration
|
|
||||||
Serial.println("Button pressed. Initiating calibration mode.");
|
|
||||||
currentState = STATE_CALIBRATE_NOT_IN_SOIL;
|
|
||||||
calibrationCount = 1;
|
|
||||||
updateLED();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
unsigned long currentTime = millis();
|
|
||||||
|
|
||||||
// ======== Connection Timeout Logic ========
|
|
||||||
if (connectionTimerStarted) {
|
|
||||||
if (currentTime - connectionStartTime >= CONNECTION_TIMEOUT_MS) {
|
|
||||||
Serial.println("No connection within 2 minutes. Entering deep sleep.");
|
|
||||||
enterDeepSleep();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// ======== BLE Connected Logic ========
|
|
||||||
if (isConnected && !dataSent && currentState == STATE_NORMAL) {
|
|
||||||
// Take sensor readings
|
|
||||||
int rawMoisture = analogRead(MOISTURE_PIN);
|
|
||||||
int moistureAvg = mapMoisture(rawMoisture);
|
|
||||||
Serial.printf("Averaged Soil Moisture: %d%%\n", moistureAvg);
|
|
||||||
|
|
||||||
// Update the characteristic and notify the client
|
|
||||||
pCharacteristic->setValue(moistureAvg);
|
|
||||||
pCharacteristic->notify();
|
|
||||||
|
|
||||||
dataSent = true;
|
|
||||||
|
|
||||||
// Immediately enter deep sleep after sending data
|
|
||||||
enterDeepSleep();
|
|
||||||
}
|
|
||||||
|
|
||||||
// ======== LED Update ========
|
|
||||||
updateLED();
|
|
||||||
|
|
||||||
// ======== LED Blinking Logic ========
|
|
||||||
if (currentState == STATE_CALIBRATE_IN_SOIL) {
|
|
||||||
if (millis() - previousBlinkTime >= (ledState ? BLINK_ON_DURATION : BLINK_OFF_DURATION)) {
|
|
||||||
ledState = !ledState;
|
|
||||||
digitalWrite(LED_PIN, ledState ? HIGH : LOW);
|
|
||||||
previousBlinkTime = millis();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Short delay to prevent watchdog resets
|
|
||||||
delay(100);
|
|
||||||
}
|
|
||||||
@@ -0,0 +1,327 @@
|
|||||||
|
#include <BLEDevice.h>
|
||||||
|
#include <BLEUtils.h>
|
||||||
|
#include <BLEServer.h>
|
||||||
|
#include <EEPROM.h>
|
||||||
|
#include "esp_sleep.h"
|
||||||
|
|
||||||
|
// ***** Configuration *****
|
||||||
|
// Pins:
|
||||||
|
#define BATTERY_PIN A0 // Battery voltage reading via a resistor divider
|
||||||
|
#define SOIL_PIN A2 // Soil moisture sensor analog reading
|
||||||
|
#define BUTTON_PIN D1 // Button on D1, active LOW (internal pull-up)
|
||||||
|
|
||||||
|
// EEPROM settings: 4 bytes (2 for dry, 2 for wet)
|
||||||
|
#define EEPROM_SIZE 4
|
||||||
|
#define EEPROM_DRY_ADDR 0
|
||||||
|
#define EEPROM_WET_ADDR 2
|
||||||
|
|
||||||
|
// Sampling settings:
|
||||||
|
#define BATTERY_SAMPLES 10
|
||||||
|
#define SOIL_SAMPLES 20
|
||||||
|
#define SAMPLE_INTERVAL 100 // 0.1 seconds between soil samples
|
||||||
|
#define NORMAL_DELAY 2000 // 2 seconds delay between normal readings
|
||||||
|
#define CAL_DELAY 10000 // 10-second delay before calibration reading
|
||||||
|
|
||||||
|
// Deep sleep settings:
|
||||||
|
#define SLEEP_DURATION_HOURS 6
|
||||||
|
#define AWAKE_MAX_MS 300000 // 5 minutes in milliseconds
|
||||||
|
|
||||||
|
// Battery voltage parameters (assuming 220kΩ divider, two equal resistors)
|
||||||
|
#define ADC_MAX 4095.0
|
||||||
|
#define VREF 3.3
|
||||||
|
#define VOLTAGE_DIVIDER_FACTOR 2.0
|
||||||
|
#define BATTERY_FULL 4.2
|
||||||
|
#define BATTERY_EMPTY 3.0
|
||||||
|
|
||||||
|
// ***** BLE Settings *****
|
||||||
|
#define SERVICE_UUID "12345678-1234-1234-1234-123456789abc"
|
||||||
|
#define MOISTURE_CHAR_UUID "abcd1234-5678-1234-5678-abcdef123456"
|
||||||
|
#define BATTERY_CHAR_UUID "fedcba98-7654-3210-0123-456789abcdef"
|
||||||
|
|
||||||
|
// ***** Default Calibration Values *****
|
||||||
|
// These defaults are used if no valid calibration exists in EEPROM.
|
||||||
|
#define DEFAULT_DRY_CAL 3000 // Higher raw reading for dry soil
|
||||||
|
#define DEFAULT_WET_CAL 1000 // Lower raw reading for wet soil
|
||||||
|
|
||||||
|
// ***** Global Calibration Variables *****
|
||||||
|
int dryCal = 0;
|
||||||
|
int wetCal = 0;
|
||||||
|
|
||||||
|
// Calibration mode states
|
||||||
|
enum CalState {
|
||||||
|
CAL_OFF,
|
||||||
|
CAL_DRY_PENDING,
|
||||||
|
CAL_WET_PENDING,
|
||||||
|
CAL_DONE
|
||||||
|
};
|
||||||
|
CalState calState = CAL_OFF;
|
||||||
|
|
||||||
|
// Debounce for button on BUTTON_PIN
|
||||||
|
bool buttonPressed = false;
|
||||||
|
unsigned long lastButtonPress = 0;
|
||||||
|
const unsigned long debounceDelay = 50; // 50 ms
|
||||||
|
|
||||||
|
// Operation mode: NORMAL_MODE or CALIBRATION_MODE
|
||||||
|
enum OperationMode {
|
||||||
|
NORMAL_MODE,
|
||||||
|
CALIBRATION_MODE
|
||||||
|
};
|
||||||
|
OperationMode opMode = NORMAL_MODE;
|
||||||
|
|
||||||
|
// ***** BLE Server Variables *****
|
||||||
|
BLEServer* pServer = nullptr;
|
||||||
|
BLECharacteristic* pMoistureCharacteristic = nullptr;
|
||||||
|
BLECharacteristic* pBatteryCharacteristic = nullptr;
|
||||||
|
|
||||||
|
// ***** Time Tracking *****
|
||||||
|
unsigned long awakeStartTime = 0;
|
||||||
|
|
||||||
|
// ***** Helper Functions *****
|
||||||
|
|
||||||
|
// Read battery voltage: average BATTERY_SAMPLES, convert reading to voltage, then map to a percentage.
|
||||||
|
float readBatteryVoltage() {
|
||||||
|
long total = 0;
|
||||||
|
for (int i = 0; i < BATTERY_SAMPLES; i++) {
|
||||||
|
total += analogRead(BATTERY_PIN);
|
||||||
|
delay(10);
|
||||||
|
}
|
||||||
|
float avg = total / (float)BATTERY_SAMPLES;
|
||||||
|
float v_adc = (avg * VREF) / ADC_MAX;
|
||||||
|
float v_bat = v_adc * VOLTAGE_DIVIDER_FACTOR;
|
||||||
|
return v_bat;
|
||||||
|
}
|
||||||
|
|
||||||
|
int batteryPercentage(float voltage) {
|
||||||
|
int percent = (int)(((voltage - BATTERY_EMPTY) / (BATTERY_FULL - BATTERY_EMPTY)) * 100);
|
||||||
|
if (percent < 0) percent = 0;
|
||||||
|
if (percent > 100) percent = 100;
|
||||||
|
return percent;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Read soil moisture raw value: average SOIL_SAMPLES spaced by SAMPLE_INTERVAL ms.
|
||||||
|
int readSoilRaw() {
|
||||||
|
long sum = 0;
|
||||||
|
for (int i = 0; i < SOIL_SAMPLES; i++) {
|
||||||
|
sum += analogRead(SOIL_PIN);
|
||||||
|
delay(SAMPLE_INTERVAL);
|
||||||
|
}
|
||||||
|
return sum / SOIL_SAMPLES;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Map raw soil moisture value to percentage using calibration values.
|
||||||
|
int mapSoilMoisture(int raw) {
|
||||||
|
if (dryCal == wetCal) return 0;
|
||||||
|
int percent = map(raw, dryCal, wetCal, 0, 100);
|
||||||
|
percent = constrain(percent, 0, 100);
|
||||||
|
return percent;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Update BLE characteristics with current battery and soil moisture data.
|
||||||
|
void updateBLE() {
|
||||||
|
int soilRaw = readSoilRaw();
|
||||||
|
int moisturePercent = 0;
|
||||||
|
if (dryCal != 0 && wetCal != 0 && dryCal > wetCal) {
|
||||||
|
moisturePercent = mapSoilMoisture(soilRaw);
|
||||||
|
}
|
||||||
|
|
||||||
|
float v_bat = readBatteryVoltage();
|
||||||
|
int batPercent = batteryPercentage(v_bat);
|
||||||
|
|
||||||
|
String moistureStr = String(moisturePercent);
|
||||||
|
String batteryStr = String(batPercent);
|
||||||
|
|
||||||
|
pMoistureCharacteristic->setValue(moistureStr.c_str());
|
||||||
|
pMoistureCharacteristic->notify();
|
||||||
|
|
||||||
|
pBatteryCharacteristic->setValue(batteryStr.c_str());
|
||||||
|
pBatteryCharacteristic->notify();
|
||||||
|
|
||||||
|
Serial.print("Battery: ");
|
||||||
|
Serial.print(v_bat);
|
||||||
|
Serial.print(" V (");
|
||||||
|
Serial.print(batPercent);
|
||||||
|
Serial.println("%)");
|
||||||
|
Serial.print("Soil raw: ");
|
||||||
|
Serial.print(soilRaw);
|
||||||
|
Serial.print(" Moisture: ");
|
||||||
|
Serial.print(moisturePercent);
|
||||||
|
Serial.println("%");
|
||||||
|
}
|
||||||
|
|
||||||
|
// Enter deep sleep for SLEEP_DURATION_HOURS hours.
|
||||||
|
void enterDeepSleep() {
|
||||||
|
Serial.println("Entering deep sleep.");
|
||||||
|
uint64_t sleepTimeUs = SLEEP_DURATION_HOURS * 3600ULL * 1000000ULL;
|
||||||
|
esp_deep_sleep(sleepTimeUs);
|
||||||
|
}
|
||||||
|
|
||||||
|
// ----- Calibration Functions -----
|
||||||
|
// Wait CAL_DELAY ms then take SOIL_SAMPLES samples and return the average raw value.
|
||||||
|
int calibrateSensor() {
|
||||||
|
delay(CAL_DELAY);
|
||||||
|
return readSoilRaw();
|
||||||
|
}
|
||||||
|
|
||||||
|
// Check the state of the calibration button on BUTTON_PIN and update calibration state.
|
||||||
|
void checkButton() {
|
||||||
|
if (digitalRead(BUTTON_PIN) == LOW) { // Button pressed
|
||||||
|
if (!buttonPressed && (millis() - lastButtonPress > debounceDelay)) {
|
||||||
|
buttonPressed = true;
|
||||||
|
lastButtonPress = millis();
|
||||||
|
|
||||||
|
// Cycle through calibration states
|
||||||
|
if (calState == CAL_OFF) {
|
||||||
|
calState = CAL_DRY_PENDING;
|
||||||
|
Serial.println("Button pressed: Entering Dry Calibration Mode. Ensure sensor is in dry soil.");
|
||||||
|
} else if (calState == CAL_DRY_PENDING) {
|
||||||
|
calState = CAL_WET_PENDING;
|
||||||
|
Serial.println("Button pressed: Entering Wet Calibration Mode. Place sensor in wet soil.");
|
||||||
|
} else if (calState == CAL_WET_PENDING) {
|
||||||
|
calState = CAL_DONE;
|
||||||
|
Serial.println("Button pressed: Finalizing Calibration.");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
buttonPressed = false;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Runs the calibration sequence.
|
||||||
|
// In Dry mode: after delay, take sample and assign dryCal.
|
||||||
|
// In Wet mode: similarly assign wetCal.
|
||||||
|
void runCalibration() {
|
||||||
|
if (calState == CAL_DRY_PENDING) {
|
||||||
|
Serial.println("Starting Dry Calibration...");
|
||||||
|
int dryValue = calibrateSensor();
|
||||||
|
dryCal = dryValue;
|
||||||
|
Serial.print("Dry calibration value: ");
|
||||||
|
Serial.println(dryCal);
|
||||||
|
// Wait for next button press to proceed to wet calibration.
|
||||||
|
while (calState == CAL_DRY_PENDING) {
|
||||||
|
checkButton();
|
||||||
|
delay(100);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (calState == CAL_WET_PENDING) {
|
||||||
|
Serial.println("Starting Wet Calibration...");
|
||||||
|
int wetValue = calibrateSensor();
|
||||||
|
wetCal = wetValue;
|
||||||
|
Serial.print("Wet calibration value: ");
|
||||||
|
Serial.println(wetCal);
|
||||||
|
while (calState == CAL_WET_PENDING) {
|
||||||
|
checkButton();
|
||||||
|
delay(100);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (calState == CAL_DONE) {
|
||||||
|
// Save calibration values to EEPROM
|
||||||
|
EEPROM.write(EEPROM_DRY_ADDR, lowByte(dryCal));
|
||||||
|
EEPROM.write(EEPROM_DRY_ADDR + 1, highByte(dryCal));
|
||||||
|
EEPROM.write(EEPROM_WET_ADDR, lowByte(wetCal));
|
||||||
|
EEPROM.write(EEPROM_WET_ADDR + 1, highByte(wetCal));
|
||||||
|
EEPROM.commit();
|
||||||
|
Serial.println("Calibration saved. Exiting calibration mode.");
|
||||||
|
calState = CAL_OFF;
|
||||||
|
opMode = NORMAL_MODE;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// ----- BLE Server Setup -----
|
||||||
|
void setupBLEServer() {
|
||||||
|
BLEDevice::init("SoilSensor_XIAO");
|
||||||
|
pServer = BLEDevice::createServer();
|
||||||
|
BLEService* pService = pServer->createService(SERVICE_UUID);
|
||||||
|
|
||||||
|
pMoistureCharacteristic = pService->createCharacteristic(
|
||||||
|
MOISTURE_CHAR_UUID,
|
||||||
|
BLECharacteristic::PROPERTY_READ | BLECharacteristic::PROPERTY_NOTIFY
|
||||||
|
);
|
||||||
|
pMoistureCharacteristic->setValue("0");
|
||||||
|
|
||||||
|
pBatteryCharacteristic = pService->createCharacteristic(
|
||||||
|
BATTERY_CHAR_UUID,
|
||||||
|
BLECharacteristic::PROPERTY_READ | BLECharacteristic::PROPERTY_NOTIFY
|
||||||
|
);
|
||||||
|
pBatteryCharacteristic->setValue("0");
|
||||||
|
|
||||||
|
pService->start();
|
||||||
|
|
||||||
|
BLEAdvertising* pAdvertising = BLEDevice::getAdvertising();
|
||||||
|
pAdvertising->addServiceUUID(SERVICE_UUID);
|
||||||
|
pAdvertising->setScanResponse(true);
|
||||||
|
pAdvertising->setMinPreferred(0x06);
|
||||||
|
pAdvertising->setMinPreferred(0x12);
|
||||||
|
BLEDevice::startAdvertising();
|
||||||
|
|
||||||
|
Serial.println("BLE Server started and advertising.");
|
||||||
|
}
|
||||||
|
|
||||||
|
// ----- Main Setup and Loop -----
|
||||||
|
|
||||||
|
void setup() {
|
||||||
|
Serial.begin(115200);
|
||||||
|
Serial.println("Booting Sensor Node...");
|
||||||
|
|
||||||
|
EEPROM.begin(EEPROM_SIZE);
|
||||||
|
|
||||||
|
pinMode(BATTERY_PIN, INPUT);
|
||||||
|
pinMode(SOIL_PIN, INPUT);
|
||||||
|
pinMode(BUTTON_PIN, INPUT_PULLUP);
|
||||||
|
|
||||||
|
// Initialize BLE Server so sensor values can be advertised
|
||||||
|
setupBLEServer();
|
||||||
|
|
||||||
|
// Load calibration from EEPROM
|
||||||
|
int storedDry = EEPROM.read(EEPROM_DRY_ADDR) | (EEPROM.read(EEPROM_DRY_ADDR + 1) << 8);
|
||||||
|
int storedWet = EEPROM.read(EEPROM_WET_ADDR) | (EEPROM.read(EEPROM_WET_ADDR + 1) << 8);
|
||||||
|
// Check validity: dry value should be higher than wet value and nonzero.
|
||||||
|
if (storedDry > storedWet && storedDry > 0 && storedWet > 0) {
|
||||||
|
dryCal = storedDry;
|
||||||
|
wetCal = storedWet;
|
||||||
|
Serial.print("Loaded Calibration - Dry: ");
|
||||||
|
Serial.print(dryCal);
|
||||||
|
Serial.print(" Wet: ");
|
||||||
|
Serial.println(wetCal);
|
||||||
|
opMode = NORMAL_MODE;
|
||||||
|
} else {
|
||||||
|
// Use default calibration values if none are valid.
|
||||||
|
dryCal = DEFAULT_DRY_CAL;
|
||||||
|
wetCal = DEFAULT_WET_CAL;
|
||||||
|
Serial.println("No valid calibration found. Using default calibration values.");
|
||||||
|
Serial.print("Default Dry: ");
|
||||||
|
Serial.print(dryCal);
|
||||||
|
Serial.print(" Default Wet: ");
|
||||||
|
Serial.println(wetCal);
|
||||||
|
opMode = NORMAL_MODE; // Allow device to be usable even without calibration.
|
||||||
|
}
|
||||||
|
|
||||||
|
awakeStartTime = millis();
|
||||||
|
}
|
||||||
|
|
||||||
|
void loop() {
|
||||||
|
// Check for button press to trigger calibration mode.
|
||||||
|
checkButton();
|
||||||
|
if (digitalRead(BUTTON_PIN) == LOW && opMode == NORMAL_MODE) {
|
||||||
|
// If button is pressed while in normal mode, enter calibration mode.
|
||||||
|
Serial.println("Button pressed while awake. Entering Calibration Mode.");
|
||||||
|
opMode = CALIBRATION_MODE;
|
||||||
|
calState = CAL_DRY_PENDING;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (opMode == CALIBRATION_MODE) {
|
||||||
|
runCalibration();
|
||||||
|
awakeStartTime = millis(); // reset awake time after calibration
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// NORMAL MODE
|
||||||
|
updateBLE();
|
||||||
|
|
||||||
|
// If more than 5 minutes have elapsed, go to deep sleep for 6 hours.
|
||||||
|
if (millis() - awakeStartTime >= AWAKE_MAX_MS) {
|
||||||
|
Serial.println("5 minutes elapsed; going to deep sleep.");
|
||||||
|
enterDeepSleep();
|
||||||
|
}
|
||||||
|
|
||||||
|
delay(NORMAL_DELAY);
|
||||||
|
}
|
||||||
Reference in New Issue
Block a user