Jens Strümper
LedBlink library makes it possible to change blink frequency of a given LED by calling the Blink function with a float parameter elsewhere in the code to visualise state changes in a program.
Diff: LedBlink.cpp
- Revision:
- 0:b536f9dc90ac
- Child:
- 1:e05abb2ca7dd
diff -r 000000000000 -r b536f9dc90ac LedBlink.cpp
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/LedBlink.cpp Mon Dec 07 12:29:33 2015 +0000
@@ -0,0 +1,32 @@
+#include "mbed.h"
+#include "LedBlink.h"
+Ticker LedTicker;
+volatile float led_timer = 0;
+bool ChangeStatusFlag = false;
+
+LedBlink::LedBlink(PinName pin) :_pin(pin) {
+ _pin = 0;
+ }
+
+void LedBlink::LedBlinkCallback(void) {
+ //float led1;
+ if (led_timer == 0){
+ _pin = 0;
+ }
+ if (led_timer != 0){
+ _pin = !_pin;
+ if (ChangeStatusFlag) {
+ // re-task ticker flash rate
+ LedTicker.detach();
+ LedTicker.attach(this, &LedBlink::LedBlinkCallback,led_timer);
+ ChangeStatusFlag = false;
+ }
+ }
+}
+
+void LedBlink::Blinker(float frequency){
+ led_timer = frequency;
+ ChangeStatusFlag = true;
+ LedBlinkCallback();
+}
+