Move source code to /firmware and fix build paths

2025-05-15 15:51:46 +02:00
parent 6dd4b87a0f
commit 412354fe88
9 changed files with 8 additions and 4 deletions
@@ -0,0 +1,62 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include "moisture.h"
+#include "config.h"
+#include "adc.h"
+
+volatile bool readSensors = false;
+
+void initMoistureSensors(void) {
+    // Set as input
+    DDRC &= ~((1 << MOISTURE_SENSOR_A0) |
+              (1 << MOISTURE_SENSOR_A1) |
+              (1 << MOISTURE_SENSOR_A2) |
+              (1 << MOISTURE_SENSOR_A3) |
+              (1 << MOISTURE_SENSOR_A4) |
+              (1 << MOISTURE_SENSOR_A5)) ;
+              //(1 << MOISTURE_SENSOR_A6) |
+              //(1 << MOISTURE_SENSOR_A7));
+    // Disable pullup
+    PORTC &= ~((1 << MOISTURE_SENSOR_A0) |
+               (1 << MOISTURE_SENSOR_A1) |
+               (1 << MOISTURE_SENSOR_A2) |
+               (1 << MOISTURE_SENSOR_A3) |
+               (1 << MOISTURE_SENSOR_A4) |
+               (1 << MOISTURE_SENSOR_A5)) ;
+               //(1 << MOISTURE_SENSOR_A6) |
+               //(1 << MOISTURE_SENSOR_A7));
+}
+
+void triggerSensorsRead(void) {
+    readSensors = true;
+}
+
+int16_t moistureSensorsAverage(int8_t sensorPin) {
+    int16_t sum = 0;
+    for (int i = 0; i < SENSOR_READINGS; i++) {
+        sum += adcRead(sensorPin);
+        //TODO: implement variance check (if over a certain variance discard measurements for this cycle)
+        //TODO: maybe add a small delay using watchdog here?
+        //TODO IMPORTANT: if value < 1 or > 1022, discard that measurement
+    }
+    return sum / SENSOR_READINGS;
+}
+
+int16_t readMoisture(void) {
+    uint8_t sensorPins[SENSORS_NUM] = { MOISTURE_SENSOR_A0, MOISTURE_SENSOR_A1,
+                                        MOISTURE_SENSOR_A2, MOISTURE_SENSOR_A3,
+                                        MOISTURE_SENSOR_A4, MOISTURE_SENSOR_A5 };
+                                        //MOISTURE_SENSOR_A6, MOISTURE_SENSOR_A7 };
+
+    int16_t overallSum = 0;
+
+    for (int i = 0; i < SENSORS_NUM; i++) {
+        int16_t sensorAverage = moistureSensorsAverage(sensorPins[i]);
+        //TODO: if a sensor gives 0 or 1023, discard that sensor entirely (means it is disconnected or not working)
+        overallSum += sensorAverage;
+    }
+
+    return overallSum / SENSORS_NUM;
+}