summaryrefslogtreecommitdiff
path: root/esp/src/lm393.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'esp/src/lm393.cpp')
-rw-r--r--esp/src/lm393.cpp26
1 files changed, 26 insertions, 0 deletions
diff --git a/esp/src/lm393.cpp b/esp/src/lm393.cpp
new file mode 100644
index 0000000..5eb4bdf
--- /dev/null
+++ b/esp/src/lm393.cpp
@@ -0,0 +1,26 @@
+#include <Arduino.h>
+#include "lm393.h"
+
+#define SENSOR_PIN 32 // ou 35 se preferir
+
+void setupLM393() {
+ pinMode(SENSOR_PIN, INPUT);
+}
+
+int lerLM393() {
+ static int contagem = 0;
+ static unsigned long lastTime = 0;
+
+ if (digitalRead(SENSOR_PIN) == LOW) {
+ contagem++;
+ delay(10);
+ }
+
+ if (millis() - lastTime >= 1000) {
+ int pulsos = contagem;
+ contagem = 0;
+ lastTime = millis();
+ return pulsos;
+ }
+ return 0;
+}