ready to alpha

подготовка к альфа-тестированию

cores/arduino/wiring_pulse.cpp

@@ -0,0 +1,60 @@
+#include "Arduino.h"
+
+/* Measures the length (in microseconds) of a pulse on the pin; state is HIGH
+ * or LOW, the type of pulse to measure.  Works on pulses from 20-30 microseconds
+ * to 3 minutes in length, but must be called at least a few dozen microseconds
+ * before the start of the pulse.
+ */
+unsigned long pulseIn(int pin, int state, unsigned long timeout)
+{
+  // check the pin number
+  if ((pin>=pinCommonQty()))
+  {
+    ErrorMsgHandler("pulseIn(): pin number exceeds the total number of pins");
+    return -1;
+  }
+  if (digitalPinHasPWM(pin))
+    // pwm off
+    analogWriteStop(pin);
+
+  // target state to hal terms
+  GPIO_PinState targetState = (state == LOW) ? GPIO_PIN_LOW : GPIO_PIN_HIGH;
+  // get port and pin number
+  GPIO_TypeDef* halPort = digitalPinToPort(pin);
+  HAL_PinsTypeDef halPin =  digitalPinToBitMask(pin);
+
+  // save initial state
+  GPIO_PinState iniState = HAL_GPIO_ReadPin(halPort, halPin);
+
+  // wait for any previous pulse to end
+  uint32_t startMicros = micros();
+  while (HAL_GPIO_ReadPin(halPort, halPin) == iniState)
+  {
+    if (micros() - startMicros > timeout)
+      return 0;
+  }
+
+  // wait for the desired polarity pulse start
+  while (HAL_GPIO_ReadPin(halPort, halPin) != targetState) 
+  {
+    if (micros() - startMicros > timeout)
+      return 0;
+  }
+
+  // wait for the pulse to stop
+  uint32_t start = micros();
+  while (HAL_GPIO_ReadPin(halPort, halPin) == targetState) 
+  {
+    if (micros() - startMicros > timeout)
+      return 0;
+  }
+  return (micros() - start);
+}
+
+/* 
+ * For backward compatibility
+ */
+unsigned long pulseInLong(int pin, int state, unsigned long timeout)
+{
+  return pulseIn(pin, state, timeout);
+}