Diff: main.cpp

Revision:

0:ab28bf24e6e2

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Jan 06 08:20:24 2017 +0000
@@ -0,0 +1,78 @@
+
+#include "mbed.h"
+
+AnalogOut my_output(PA_4);
+
+#define PI        (3.141592653589793238462)
+#define AMPLITUDE (1.0)    // x * 3.3V
+#define PHASE     (PI * 1) // 2*pi is one period
+#define RANGE     (0x7FFF)
+#define OFFSET    (0x7FFF)
+
+// Configuration for sinewave output
+#define BUFFER_SIZE (360)
+//uint16_t buffer[BUFFER_SIZE];
+
+int i;
+/*
+int main() {
+    while(1) {      
+        // triangle output
+        for (i = 0; i < 1000; i++) {
+            i=0*i;
+            my_output.write_u16(i);
+            wait_us(100);
+            i=2*i;
+            my_output.write_u16(2*i);
+            wait_us(100);
+        }*/
+        
+        /*
+        for (i = 65535; i>0; i--) {
+            my_output.write_u16(i);
+            //wait_us(10);
+    }*/
+
+
+
+int main() {
+    while(1) {      
+        // triangle output
+        for (i = 0; i < 65536; i++) {
+            my_output.write_u16(i);
+           // wait_us(10);
+        }
+        
+        for (i = 65535; i>0; i--) {
+            my_output.write_u16(i);
+            //wait_us(10);
+    }
+}
+}
+
+
+
+
+
+/*
+//void calculate_sinewave(void);
+int main() {
+    printf("Sinewave example\n");
+    calculate_sinewave();
+    while(1) {      
+        // sinewave output
+        for (int i = 0; i < BUFFER_SIZE; i++) {
+            my_output.write_u16(buffer[i]);
+            wait_us(10);
+        }
+    }
+}
+
+// Create the sinewave buffer
+void calculate_sinewave(void){
+  for (int i = 0; i < BUFFER_SIZE; i++) {
+     double rads = (PI * i)/180.0; // Convert degree in radian
+     buffer[i] = (uint16_t)(AMPLITUDE * (RANGE * (cos(rads + PHASE))) + OFFSET);
+  }
+}
+*/
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