Diff: mbed/DigitalInOut.h

Revision:

1:f3f702086a30

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed/DigitalInOut.h	Thu May 11 11:49:50 2017 +0000
@@ -0,0 +1,134 @@
+/* mbed Microcontroller Library - DigitalInOut
+ * Copyright (c) 2006-2011 ARM Limited. All rights reserved.
+ */ 
+ 
+#ifndef MBED_DIGITALINOUT_H
+#define MBED_DIGITALINOUT_H
+
+#include "platform.h"
+#include "PinNames.h"
+#include "PeripheralNames.h"
+#include "Base.h"
+
+namespace mbed {
+
+/* Class: DigitalInOut
+ *  A digital input/output, used for setting or reading a bi-directional pin
+ */
+class DigitalInOut : public Base {
+
+public:
+
+    /* Constructor: DigitalInOut
+     *  Create a DigitalInOut connected to the specified pin
+     *
+     * Variables:
+     *  pin - DigitalInOut pin to connect to
+     */
+    DigitalInOut(PinName pin, const char* name = NULL);
+
+    /* Function: write
+     *  Set the output, specified as 0 or 1 (int)
+     *
+     * Variables:
+     *  value - An integer specifying the pin output value, 
+     *      0 for logical 0 and 1 (or any other non-zero value) for logical 1 
+     */
+    void write(int value) {
+#if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
+
+        if(value) {
+            _gpio->FIOSET = _mask;
+        } else {
+            _gpio->FIOCLR = _mask;
+        }
+
+#elif defined(TARGET_LPC11U24)
+
+        if(value) {
+            LPC_GPIO->SET[_index] = _mask;
+        } else {
+            LPC_GPIO->CLR[_index] = _mask;
+        }
+#endif
+    }
+
+    /* Function: read
+     *  Return the output setting, represented as 0 or 1 (int)
+     *
+     * Variables:
+     *  returns - An integer representing the output setting of the pin if it is an output, 
+     *      or read the input if set as an input
+     */
+    int read() {
+#if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
+
+        return ((_gpio->FIOPIN & _mask) ? 1 : 0);
+#elif defined(TARGET_LPC11U24)
+        return ((LPC_GPIO->PIN[_index] & _mask) ? 1 : 0);
+#endif
+    }
+
+
+    /* Function: output
+     *  Set as an output
+     */
+    void output();
+
+    /* Function: input
+     *  Set as an input
+     */
+    void input();
+
+    /* Function: mode
+     *  Set the input pin mode
+     *
+     * Variables:
+     *  mode - PullUp, PullDown, PullNone, OpenDrain
+     */
+    void mode(PinMode pull);
+    
+#ifdef MBED_OPERATORS
+    /* Function: operator=
+     *  A shorthand for <write>
+     */
+    DigitalInOut& operator= (int value) {
+        write(value);
+        return *this;
+    }
+
+    DigitalInOut& operator= (DigitalInOut& rhs) {
+        write(rhs.read());
+        return *this;
+    }
+
+    /* Function: operator int()
+     *  A shorthand for <read>
+     */
+    operator int() {
+        return read();
+    }
+#endif
+
+#ifdef MBED_RPC
+    virtual const struct rpc_method *get_rpc_methods();
+    static struct rpc_class *get_rpc_class();
+#endif
+
+protected:
+
+    PinName             _pin;
+
+#if defined(TARGET_LPC1768) || defined(TARGET_LPC2368)
+    LPC_GPIO_TypeDef    *_gpio;
+#elif defined(TARGET_LPC11U24)
+    int _index;
+#endif
+
+    uint32_t            _mask;
+
+};
+
+} // namespace mbed 
+
+#endif