Diff: main.cpp

Revision:

0:07bc252ecb12

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed May 19 09:32:20 2021 +0000
@@ -0,0 +1,97 @@
+#include "mbed.h"
+#include "BufferedSerial.h"
+
+
+#define RECEIVE_BUFF_LENGT      120
+#define MAXIMUM_BUFFER_SIZE     32
+
+
+
+PwmOut buzzer(p21);
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+DigitalOut pin22(p22);
+DigitalOut pin23(p23);
+DigitalOut pin24(p24);
+
+BufferedSerial  pc(USBTX, USBRX);
+
+float   frequency = 100;
+float   delay = 0.1;
+float   tempo_trascorso_ultimo_pwm_refresh = 0;
+float   tempo_ultimo_pwm_refresh = 0;
+float   Freq_Period_2 = 0;
+float   Freq_Period_3 = 0;
+
+int new_data = 0;
+
+Ticker Task_Controllo_freq;
+Ticker Task_Freq_Gen_2;
+Ticker Task_Freq_Gen_3;
+Timer tempo;
+
+void flip_2()
+{
+    pin22 = !pin22;
+}
+
+void flip_3()
+{
+    pin23 = !pin23;
+}
+
+void Gestione_frequenza()
+{
+    tempo_trascorso_ultimo_pwm_refresh = tempo.read() - tempo_ultimo_pwm_refresh;
+    if(tempo_trascorso_ultimo_pwm_refresh > delay) {
+        buzzer.period(1.0/(frequency)); // set PWM period
+        buzzer=0.5; // set duty cycle
+        delay = 1.0 /(frequency);
+        tempo_trascorso_ultimo_pwm_refresh = tempo.read();
+        Freq_Period_2 = 1.0/(2*frequency);
+        Freq_Period_3 = 1.0/(1.8*frequency);
+        Task_Freq_Gen_2.attach(flip_2,Freq_Period_2);
+        Task_Freq_Gen_3.attach(flip_3,Freq_Period_3);
+        frequency = frequency + 1000;
+        if(frequency > 20000)
+            frequency = 1000;
+    }
+
+}
+
+
+
+
+int main()
+{
+    uint32_t num;
+    // Application buffer to receive the data
+    char buf[MAXIMUM_BUFFER_SIZE] = {0};
+
+    pc.baud(115200);
+    pc.format(8,Serial::None,2);
+//    pc.attach(&pc_recv, Serial::RxIrq);
+
+
+    frequency = 1000;
+    Task_Controllo_freq.attach(&Gestione_frequenza, 0.05);
+    tempo.start();
+    tempo_ultimo_pwm_refresh = tempo.read();
+
+    while(1) {
+//        led1=!led1;
+//        pin24=!pin24;
+//        wait(1.0);
+
+        //if (num = pc.read(buf, sizeof(buf))) 
+        if(0)
+        {
+            // Toggle the LED.
+            led2 = !led2;
+
+            // Echo the input back to the terminal.
+            pc.write(buf, num);
+        }
+
+    }
+}
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