István Cserny / Mbed 2 deprecated Lab04_button_bounce

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Dependencies:   mbed

Files at this revision

API Documentation at this revision

Revision 0:056c055636d2, committed 2021-11-11

Comitter:
cspista
Date:
Thu Nov 11 14:28:14 2021 +0000
Commit message:
Final version

Changed in this revision

main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file 
diff -r 000000000000 -r 056c055636d2 main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Nov 11 14:28:14 2021 +0000
@@ -0,0 +1,25 @@
+#include "mbed.h"
+
+DigitalIn mybutton(BUTTON1,PullUp); // Pushbutton input (PC_13)
+InterruptIn button(BUTTON1);        // Pusbutton interrupt
+Serial pc(USBTX,USBRX);             // UART0 via OpenSDA
+volatile uint16_t counts;           // counter variable
+
+void button_pressed() {
+    counts++;                       // counts button presses
+}
+
+int main() {
+    pc.baud(115200);                // set baudrate for UART
+    button.mode(PullUp);            // Enable internal pullup
+    button.fall(&button_pressed);   // Attach function to falling edge
+    while (true) {
+        counts = 0;                 // Clear counter
+        pc.printf("Press & release switch... \r\n");
+        while (mybutton);           // Wait for button press
+        wait_ms(20);                // Debounce delay
+        while (!mybutton);          // Wait for button release
+        wait_ms(20);                // Debounce delay
+        pc.printf("Button pressed %d times\r\n",counts);
+    }
+}
\ No newline at end of file

diff -r 000000000000 -r 056c055636d2 mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Nov 11 14:28:14 2021 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/65be27845400
\ No newline at end of file