added basic code

1 files changed, 38 insertions, 0 deletions

diff --git a/arduino/cores/nRF5/pulse.h b/arduino/cores/nRF5/pulse.h
new file mode 100755
index 0000000..04c3c39
--- /dev/null
+++ b/arduino/cores/nRF5/pulse.h
@@ -0,0 +1,38 @@
+/*
+  Copyright (c) 2015 Arduino LLC.  All right reserved.
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the GNU Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * \brief 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 2-3 microseconds
+ * to 3 minutes in length, but must be called at least a few dozen microseconds
+ * before the start of the pulse.
+ */
+uint32_t pulseIn(uint32_t pin, uint32_t state, uint32_t timeout);
+
+#ifdef __cplusplus
+// Provides a version of pulseIn with a default argument (C++ only)
+uint32_t pulseIn(uint32_t pin, uint32_t state, uint32_t timeout = 1000000L);
+
+} // extern "C"
+#endif