gas_sensor

commit 17041b973906f56465d5a990b5c1cf21252c55f1
parent db79b469fa9d8896c9d9e6edd314a2ac2a09eb62
Author: Tonton <tonterface@proton.me>
Date:   Sun, 28 Jun 2026 20:04:53 +0200

implement read function for sensor
add liveview for sensor monitoring

Diffstat:
M
gas_sensor.ino
 | 
3
+++
M
include/sensor.h
 | 
5
+++--
M
src/display.cpp
 | 
1
+
M
src/menu.cpp
 | 
30
+++++++++++++++++++++++++++---
M
src/sensor.cpp
 | 
31
+++++++++++++++++++++++++++++--

5 files changed, 63 insertions(+), 7 deletions(-)
diff --git a/gas_sensor.ino b/gas_sensor.ino
@@ -4,6 +4,7 @@
 
 #include "include/menu.h"
 #include "include/display.h"
+#include "include/sensor.h"
 
 /* function declarations */
 
@@ -24,9 +25,11 @@ void setup(void)
 	pinMode(BUILTIN_LED, OUTPUT);
 
 	dsp_init();
+	sensor_init();
 }
 
 void loop(void)
 {
 	menu_main();
+	delay(100);
 }
diff --git a/include/sensor.h b/include/sensor.h
@@ -1,7 +1,8 @@
 #ifndef SENSOR_H
 #define SENSOR_H
 
-int sensor_read(void);
-int sensor_analyze();
+void sensor_init(void);
+int  sensor_read(int);
+int  sensor_analyze(void);
 
 #endif // !MENU_H
diff --git a/src/display.cpp b/src/display.cpp
@@ -28,6 +28,7 @@ void dsp_print_result(int res)
 {
 	display.clearDisplay();
 	dsp_write("RESULT:", 0, 0);
+	display.setCursor(0, SCREEN_ROW);
 	display.print(res);
 	display.display();
 }
diff --git a/src/menu.cpp b/src/menu.cpp
@@ -1,4 +1,6 @@
-/* main menu library */
+/* menu system
+ *
+ */
 
 #include <Arduino.h>
 
@@ -14,6 +16,7 @@ static void select_menu_item(int input);
 static void menu_item1(void);
 static void menu_item2(void);
 static void menu_item3(void);
+static void print_live(void);
 
 /* function implementations */
 static int get_user_input(void)
@@ -21,7 +24,7 @@ static int get_user_input(void)
 	/* implement handling of physical buttons */
 	int input;
 
-	while (Serial.available() <= 0) { delay(10); }
+	while (Serial.available() <= 0) { delay(100); }
 
 	/* always read to not clog buffer */
 	if (Serial.available() > 0)
@@ -79,7 +82,7 @@ static void menu_item1(void)
 	Serial.print("\e[1;1H\e[2J");
 	dsp_print_menu1();
 	Serial.print("Wait for analysis\n\r");
-	res = sensor_analyze();
+	res = sensor_read(0);
 	dsp_print_result(res);
 	goto_main();
 }
@@ -89,6 +92,7 @@ static void menu_item2(void)
 	Serial.print("\e[1;1H\e[2J");
 	dsp_print_menu2();
 	Serial.println("You chose item 2.");
+	print_live();
 	goto_main();
 }
 
@@ -100,6 +104,26 @@ static void menu_item3(void)
 	goto_main();
 }
 
+static void print_live(void)
+{
+	int rx, in;
+
+	while (Serial.available() <= 0) {
+		rx = sensor_read(0);
+		dsp_print_result(rx);
+		Serial.print("\e[1;1H\e[2J");
+		Serial.print("Sensor: ");
+		Serial.print(rx);
+		delay(500);
+	}
+
+	/* don't clog buffer */
+	if (Serial.available() > 0)
+		in = Serial.parseInt();
+
+	Serial.print("\n\r");
+}
+
 void menu_main(void)
 {
 	int input;
diff --git a/src/sensor.cpp b/src/sensor.cpp
@@ -4,10 +4,29 @@
 
 #include "../include/sensor.h"
 
+/* enums */
+enum {
+	SENSOR_1 = 26,
+	SENSOR_2 = 25,
+	SENSOR_3 = 34,
+	SENSOR_4 = 39
+};
+
+/* variables */
+const int sens_arr[] = {
+	SENSOR_1,
+	SENSOR_2,
+	SENSOR_3,
+	SENSOR_4
+};
+
 /* function definitions */
-int sensor_read()
+int sensor_read(int sensor)
 {
-	return 10;
+	int rx;
+
+	rx = analogRead(sens_arr[sensor]);
+	return rx;
 }
 
 int sensor_analyze()
@@ -15,3 +34,11 @@ int sensor_analyze()
 	delay(1000);
 	return 1;
 }
+
+void sensor_init(void)
+{
+	pinMode(SENSOR_1, INPUT);
+	pinMode(SENSOR_2, INPUT);
+	pinMode(SENSOR_3, INPUT);
+	pinMode(SENSOR_4, INPUT);
+}