Add first example

Signed-off-by: Frederic.Pillon <frederic.pillon@st.com>

Author: fpistm

examples/NonReg/PulseIn/PulseIn.ino

@@ -0,0 +1,87 @@
+/*
+  pulseIn
+
+  This sketch allows to test pulseIn() and pulseInLong() functions.
+
+  A PWM signal is generated on 'pwm' pin and then measures are performed on
+  'in' pin for the HIGH and LOW state.
+  The min and max value for both are displayed on the Serial console.
+
+  Creation 15 Sep 2017
+  by Frederic Pillon
+
+  This example code is in the public domain.
+
+  https://www.arduino.cc/en/Reference/PulseIn
+*/
+
+
+// Use pulseInLong()?
+#define USE_PULSEINLONG 1
+
+static uint32_t pwm = 9;
+static uint32_t in = 4;
+static uint32_t state = HIGH;
+
+void setup() {
+  pinMode(in, INPUT);
+  Serial.begin(115200);
+  analogWrite(pwm, 127);
+}
+static uint32_t min_duration_low = (uint32_t)(-1);
+static uint32_t max_duration_low = 0;
+static uint32_t min_duration_high = (uint32_t)(-1);
+static uint32_t max_duration_high = 0;
+#if USE_PULSEINLONG
+static uint32_t min_durationLong_low = (uint32_t)(-1);
+static uint32_t max_durationLong_low = 0;
+static uint32_t min_durationLong_high = (uint32_t)(-1);
+static uint32_t max_durationLong_high = 0;
+#endif
+
+void loop() {
+  uint32_t duration = 0;
+  duration = pulseIn(in, state);
+#if USE_PULSEINLONG
+  uint32_t durationLong = 0;
+  durationLong = pulseInLong(in, state);
+#endif
+  if (state == HIGH) {
+    Serial.print("PulseIn HIGH state duration:");
+    min_duration_high=min(min_duration_high,duration);
+    max_duration_high=max(max_duration_high,duration);
+    Serial.print(" min= ");
+    Serial.print(min_duration_high);
+    Serial.print(" max= ");
+    Serial.print(max_duration_high);
+#if USE_PULSEINLONG
+    min_durationLong_high=min(min_durationLong_high,durationLong);
+    max_durationLong_high=max(max_durationLong_high,durationLong);
+    Serial.print(" min (long)= ");
+    Serial.print(min_durationLong_high);
+    Serial.print(" max (long)= ");
+    Serial.print(max_durationLong_high);
+#endif
+    state = LOW;
+  }
+  else {
+    Serial.print("PulseIn LOW  state duration:");
+    min_duration_low=min(min_duration_low,duration);
+    max_duration_low=max(max_duration_low,duration);
+    Serial.print(" min= ");
+    Serial.print(min_duration_low);
+    Serial.print(" max= ");
+    Serial.print(max_duration_low);
+#if USE_PULSEINLONG
+    min_durationLong_low=min(min_durationLong_low,durationLong);
+    max_durationLong_low=max(max_durationLong_low,durationLong);
+    Serial.print(" min (long)= ");
+    Serial.print(min_durationLong_low);
+    Serial.print(" max (long)= ");
+    Serial.print(max_durationLong_low);
+#endif
+    state = HIGH;
+  }
+  Serial.println();
+  delay(1000);
+}

library.properties

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+name=STM32duino Examples
+version=1.0.0
+author=fpistm
+maintainer=stm32duino
+sentence=Provides several examples for the Arduino core for STM32 MCUs.
+paragraph=Arduino STM32 core, libraries and example are available here: https://github.com/stm32duino
+category=Other
+url=https://github.com/stm32duino/STM32Examples
+architectures=stm32