Revision 0:1220be6b963d, committed 2021-09-03

Comitter:

CCastrop1012

Date:

Fri Sep 03 04:46:20 2021 +0000

Commit message:

Mejora la lectura de un pulsador disminuyendo el debounce que se genera al precionarlo.

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Sep 03 04:46:20 2021 +0000
@@ -0,0 +1,40 @@
+#include "mbed.h"
+
+DigitalOut led1(LED1);
+
+InterruptIn button1(USER_BUTTON);
+volatile bool button1_pressed = false; // Used in the main loop
+volatile bool button1_enabled = true; // Used for debouncing
+Timeout button1_timeout; // Used for debouncing
+
+// Enables button when bouncing is over
+void button1_enabled_cb(void)
+{
+    button1_enabled = true;
+}
+
+// ISR handling button pressed event
+void button1_onpressed_cb(void)
+{
+    if (button1_enabled) { // Disabled while the button is bouncing
+        button1_enabled = false;
+        button1_pressed = true; // To be read by the main loop
+        button1_timeout.attach(callback(button1_enabled_cb), 0.3); // Debounce time 300 ms
+    }
+}
+
+int main()
+{
+    //button1.mode(PullUp); // Activate pull-up
+    button1.fall(callback(button1_onpressed_cb)); // Attach ISR to handle button press event
+
+    int idx = 0; // Just for printf below
+
+    while(1) {
+        if (button1_pressed) { // Set when button is pressed
+            button1_pressed = false;
+            printf("Button pressed %d\n", idx++);
+            led1 = !led1;
+        }
+    }
+}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Fri Sep 03 04:46:20 2021 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400
\ No newline at end of file