From a6ed1742539c62186fb903017b52dd48f145ae4f Mon Sep 17 00:00:00 2001
From: Vasil Zlatanov <v@skozl.com>
Date: Wed, 3 May 2017 16:30:16 +0100
Subject: Add template and build environment.

---
 ext/PortIn.h | 93 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 ext/PortIn.h

(limited to 'ext/PortIn.h')

diff --git a/ext/PortIn.h b/ext/PortIn.h
new file mode 100644
index 0000000..0134273
--- /dev/null
+++ b/ext/PortIn.h
@@ -0,0 +1,93 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef MBED_PORTIN_H
+#define MBED_PORTIN_H
+
+#include "platform.h"
+
+#if DEVICE_PORTIN
+
+#include "port_api.h"
+
+namespace mbed {
+
+/** A multiple pin digital input
+ *
+ *  Example:
+ * @code
+ * // Switch on an LED if any of mbed pins 21-26 is high
+ *
+ * #include "mbed.h"
+ *
+ * PortIn     p(Port2, 0x0000003F);   // p21-p26
+ * DigitalOut ind(LED4);
+ *
+ * int main() {
+ *     while(1) {
+ *         int pins = p.read();
+ *         if(pins) {
+ *             ind = 1;
+ *         } else {
+ *             ind = 0;
+ *         }
+ *     }
+ * }
+ * @endcode
+ */
+class PortIn {
+public:
+
+    /** Create an PortIn, connected to the specified port
+     *
+     *  @param port Port to connect to (Port0-Port5)
+     *  @param mask A bitmask to identify which bits in the port should be included (0 - ignore)
+        */
+    PortIn(PortName port, int mask = 0xFFFFFFFF) {
+        port_init(&_port, port, mask, PIN_INPUT);
+    }
+
+    /** Read the value currently output on the port
+     *
+     *  @returns
+     *    An integer with each bit corresponding to associated port pin setting
+     */
+    int read() {
+        return port_read(&_port);
+    }
+
+    /** Set the input pin mode
+     *
+     *  @param mode PullUp, PullDown, PullNone, OpenDrain
+     */
+    void mode(PinMode mode) {
+        port_mode(&_port, mode);
+    }
+
+    /** A shorthand for read()
+     */
+    operator int() {
+        return read();
+    }
+
+private:
+    port_t _port;
+};
+
+} // namespace mbed
+
+#endif
+
+#endif
-- 
cgit v1.2.3-54-g00ecf