Dan Allen
a program to ramp the blink frequency of an analog out pin for Nucleo L432KC
Diff: main.cpp
- Revision:
- 0:95d8db6b6e4d
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Sun Jan 27 15:48:36 2019 +0000
@@ -0,0 +1,26 @@
+#include "mbed.h"
+
+AnalogOut base(A3);
+Serial pc(USBTX, USBRX,9600);
+// main() runs in its own thread in the OS
+float min_loop_time = 1e6;
+Timer t;
+int main() {
+ pc.printf("starting main program\r\n");
+ while (1) {
+ float delay_time = 2e6;
+ t.start();
+ while(delay_time > 1.0) {
+ base = 1;
+ wait_us(delay_time);
+ base = 0;
+ wait_us(delay_time);
+ if(t.read_us() > min_loop_time) {
+ delay_time = delay_time/2;
+ t.reset();
+ pc.printf("%.0f\r\n",delay_time);
+ }
+ }
+ }
+}
+