From 50dff4090209401fb03f93eaefee6b6d4921e065 Mon Sep 17 00:00:00 2001
From: Stefan Ostermann <stefan@ostermail.de>
Date: Sat, 10 Apr 2021 23:17:56 +0200
Subject: [PATCH] working soil sensor

---
 esp-receiver/src/main.cpp | 15 ++++++++++++++-
 sensor433/src/main.cpp    | 19 +++++++++++++++----
 2 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/esp-receiver/src/main.cpp b/esp-receiver/src/main.cpp
index 7bf309a..d5d05be 100644
--- a/esp-receiver/src/main.cpp
+++ b/esp-receiver/src/main.cpp
@@ -14,7 +14,7 @@
 #if defined(USE_ARDUINO)
 #define RH_RX_PIN 11
 #elif defined(USE_ESPRESSIF)
-#define RH_RX_PIN 12
+#define RH_RX_PIN D8
 #endif
 
 #define RH_BUF_LEN 5
@@ -22,6 +22,9 @@ uint8_t rh_buf[RH_BUF_LEN];
 
 #define RH_ASK_MAX_MESSAGE_LEN RH_BUF_LEN
 
+const int AirValue = 800;   //replace the value with value when placed in air
+const int WaterValue = 345; //replace the value with value when placed in water
+
 
 
 RH_ASK driver(RH_SPEED, RH_RX_PIN);
@@ -29,6 +32,7 @@ RH_ASK driver(RH_SPEED, RH_RX_PIN);
 float t = 0;
 float h = 0;
 long bat = 0;
+int soil = 0;
 
 /**
  * Message identifier constants:
@@ -37,6 +41,7 @@ long bat = 0;
 #define MSG_TEMP 0x01
 #define MSG_HUMID 0x02
 #define MSG_BAT 0x03
+#define MSG_SOIL 0x04
 #define MSG_ERR 0xee
 
 void setup() {
@@ -71,6 +76,14 @@ void loop() {
           Serial.print(t);
           Serial.println(" %");
           break;
+        case MSG_SOIL:
+          // Soil Humidity:
+          Serial.println("0x04 Soil Humidity");
+          
+          memcpy(&soil, &rh_buf[1], 2);
+          Serial.println(soil);
+          Serial.println(map(soil, AirValue, WaterValue, 0, 100));
+          break;
         case MSG_BAT:
           // battery data
           Serial.println("0x03 Battery");
diff --git a/sensor433/src/main.cpp b/sensor433/src/main.cpp
index 84bb123..85e3e73 100644
--- a/sensor433/src/main.cpp
+++ b/sensor433/src/main.cpp
@@ -19,6 +19,9 @@
 // pin of the DHT22 sensor
 #define DHT_PIN 1
 
+// pin of the soil sensor
+#define SOIL_PIN A1
+
 // the own RadioHead address
 #define RH_OWN_ADDR 0xca // 202
 
@@ -29,9 +32,9 @@
 #define RH_SPEED 1000
 
 // pins for the radio hardware
-#define RH_RX_PIN 5 // not used, set to a non-existent pin
+#define RH_RX_PIN 6 // not used, set to a non-existent pin
 #define RH_TX_PIN 3
-#define RH_PTT_PIN 5 // not used, set to a non-existent pin
+#define RH_PTT_PIN 6 // not used, set to a non-existent pin
 
 #include <Arduino.h>
 #include <avr/sleep.h>
@@ -68,6 +71,7 @@ uint8_t rh_buf[RH_BUF_LEN] = { 0x00, 0x00, 0x00, 0x00, 0x00 };
 #define MSG_TEMP 0x01
 #define MSG_HUMID 0x02
 #define MSG_BAT 0x03
+#define MSG_SOIL 0x04
 #define MSG_ERR 0xee
 
 
@@ -95,6 +99,8 @@ void setup() {
   // setup the LED pin
   pinMode(LED_PIN, OUTPUT);
 
+  pinMode(SOIL_PIN, INPUT);
+
   // init the DHT22
   dht_init(&dht, DHT_PIN);
 
@@ -132,6 +138,7 @@ void loop() {
     // temperature and humidity
     float t = 0;//float is 32bit = 1byte
     float h = 0;
+    int soil = 0;
     long battery = 0;
 
     if (counter % 4 == 0) {
@@ -140,12 +147,16 @@ void loop() {
         memcpy(&rh_buf[1], &battery, 4);
         rh_send(RH_BUF_LEN);
      }else if (dht_read_data(&dht, &t, &h) == 1) {
-      if (counter % 2 == 0) {
+      if (counter % 3 == 0) {
         rh_buf[0] = MSG_TEMP;
         memcpy(&rh_buf[1], &t, 4);
-      } else if (counter % 2 == 1) {
+      } else if (counter % 3 == 1) {
         rh_buf[0] = MSG_HUMID;
         memcpy(&rh_buf[1], &h, 4);
+      } else if (counter % 3 == 2) {
+        rh_buf[0] = MSG_SOIL;
+        soil = analogRead(SOIL_PIN);
+        memcpy(&rh_buf[1], &soil, 2);
       }
       rh_send(RH_BUF_LEN);  
     } else {