Diff: main.cpp

Revision:

1:457c0c664181

Parent:

0:fde0aa5b370d

--- a/main.cpp	Thu Apr 29 09:23:17 2021 +0000
+++ b/main.cpp	Fri May 21 06:40:02 2021 +0000
@@ -1,28 +1,57 @@
-/* mbed Microcontroller Library
- * Copyright (c) 2019 ARM Limited
+/*
+ * Copyright (c) 2020 Arm Limited and affiliates.
  * SPDX-License-Identifier: Apache-2.0
  */
 
 #include "mbed.h"
-#include "platform/mbed_thread.h"
+
+// Create a DigitalOutput object to toggle an LED whenever data is received.
+static DigitalOut led(LED1);
+
+// Create a UnbufferedSerial object with a default baud rate.
+static UnbufferedSerial serial_port(USBTX, USBRX);
+
+InterruptIn mybutton(USER_BUTTON);
+DigitalOut myled(LED1);
+ 
+float delay = 1.0; // 1 sec
+ 
+void pressed()
+{
+    char c = 'X';
+    serial_port.write(&c, 1);
+}
 
 
-// Blinking rate in milliseconds
-#define BLINKING_RATE_MS                                                    500
-
-Serial pc(USBTX,USBRX);
-
-int main()
+void on_rx_interrupt()
 {
-    // Initialise the digital pin LED1 as an output
-    DigitalOut led(LED1);
+    char c;
+
+    // Toggle the LED.
+    led = !led;
 
-    pc.printf("Hello World !\r\n");
-    pc.printf("Here I'm !\r\n");
-    pc.printf("It works !\r\n");
-
-    while (true) {
-        led = !led;
-        thread_sleep_for(BLINKING_RATE_MS);
+    // Read the data to clear the receive interrupt.
+    if (serial_port.read(&c, 1)) {
+        // Echo the input back to the terminal.
+        serial_port.write(&c, 1);
     }
 }
+
+int main(void)
+{
+    // Set desired properties (9600-8-N-1).
+    serial_port.baud(115200);
+    serial_port.format(
+        /* bits */ 8,
+        /* parity */ SerialBase::None,
+        /* stop bit */ 1
+    );
+
+    // Register a callback to process a Rx (receive) interrupt.
+    serial_port.attach(&on_rx_interrupt, SerialBase::RxIrq);
+    
+    while (1) {
+        mybutton.fall(&pressed);
+    }
+
+}