Diff: main.cpp

Revision:

1:7d1fb66613d9

Parent:

0:ae1f7d2c4fbc

Child:

2:626c243adc03

--- a/main.cpp	Thu May 18 08:01:11 2017 +0000
+++ b/main.cpp	Fri May 19 07:41:18 2017 +0000
@@ -1,20 +1,109 @@
 #include "mbed.h"
 #include "USBSerial.h"
 
-USBSerial serial; // Virtual serial port over USB
+#include <time.h>
+
+USBSerial vcom; // Virtual serial port over USB
 Serial uart(P0_19, P0_18);
-DigitalOut led(P0_20);
+
+DigitalOut led0(P0_20);
+DigitalOut led1(P0_21);
+DigitalOut led2(P0_11);
+
+void led_test()
+{
+    for (int i = 0; i < 10; i++) {
+        led0 = !led0; wait(0.33);
+        led1 = !led1; wait(0.33);
+        led2 = !led2; wait(0.33);
+    }
+    led0 = led1 = led2 = 1;
+    uart.printf("led_test done!\r\n");
+}
+
+DigitalIn button(P0_1, PullUp);
+struct InterruptTest {
+    InterruptTest(PinName pin) : _ini(pin) {
+        _ini.mode(PullNone);
+        _ini.rise(callback(this, &InterruptTest::on_rise));
+        _ini.fall(callback(this, &InterruptTest::on_fall));
+        _rises = _falls = 0;
+    }
+
+    int rises() { return _rises; }
+    int falls() { return _falls; }
+
+private:
+    void on_rise() {
+        led1 = !led1;
+        _rises++;
+    }
+        
+    void on_fall() {
+        led2 = !led2;
+        _falls++;
+    }
+    
+private:
+    InterruptIn _ini;
+    int _rises, _falls;
+};
+
+void button_test()
+{
+    DigitalIn btn(P0_1, PullUp);
+    
+    uart.printf("button input test start(10s) %d:\r\n", clock());
+    
+    int count = 0;
+    clock_t start = clock();
+    while (clock() - start <= 10*CLOCKS_PER_SEC) {
+        led2 = btn.read();
+        if (!led2) {
+            count++;
+        }
+    }
+    uart.printf("\r\n");
+    uart.printf("button input test done! count: %d, %d\r\n", count, clock());
+}
+
+void interrupt_test()
+{
+    uart.printf("button interrupt test start(10s) %d:\r\n", clock());
+    InterruptTest it(P0_1);
+    wait(10);
+    uart.printf("button interrupt test done, %d\r\n", clock());
+    uart.printf("rises: %d, falls: %d\r\n", it.rises(), it.falls());
+}
+
+void check_button()
+{
+    led2 = button.read();
+}
 
 int main(void) {
     uart.baud(115200);
     uart.format();
     
+    uart.printf("BUILD: %s %s\r\n", __DATE__, __TIME__);
+    uart.printf("System core clock: %d\r\n", SystemCoreClock);
+    
+//    led_test();
+//    button_test();
+//    interrupt_test();
+    
+    Ticker ticker;
+    ticker.attach_us(check_button, 10000);
+    
     while(1) {
+//        led2 = button.read();
         clock_t ts = clock();
         
-        led = !led;
         uart.printf("Hello UART! %d\r\n", ts);
-        serial.printf("I am a virtual serial port %d\r\n", ts);
-        wait(3);
+        vcom.printf("I am a virtual vcom port %d\r\n", ts);
+        
+        led0 = !led0; wait(1);
+        led1 = !led1; wait(1);
+        // led2 = !led2; wait(1);
     }
-}
\ No newline at end of file
+}