Added driver class using the CPU UID HAL API

Author: MikeDK

drivers/CpuUid.cpp

@@ -0,0 +1,81 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017 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.
+ */
+
+#include <cstdio>
+#include "hal/cpu_uid_api.h"
+#include "drivers/CpuUid.h"
+
+#if DEVICE_CPUUID
+
+namespace mbed {
+
+CpuUid::CpuUid() : _data(NULL)
+{
+    _size = cpu_uid_get_length();
+    if (0 < _size)
+    {
+        _data = new uint8_t[_size];
+        cpu_uid_get_uid(_data);
+    }
+}
+
+CpuUid::~CpuUid()
+{
+    if (_data)
+    {
+        delete _data;
+    }
+}
+
+CpuUid::operator std::string()
+{
+    std::string str;
+    char buf[3];
+    
+    for (int i = 0; i < _size; ++i)
+    {
+        snprintf(buf, 3, "%.2X", _data[i]);
+        str += buf;
+    }
+
+    return str;
+}
+
+CpuUid::operator CpuUidArray()
+{
+    CpuUidArray array;
+    
+    for (int i = 0; i < _size; ++i)
+    {
+        array.push_back(_data[i]);
+    }
+    
+    return array;
+}    
+
+uint8_t CpuUid::operator[](int x)
+{
+    if (x >= 0 && x < _size)
+    {
+        return _data[x];
+    }
+    
+    return 0x00;
+}
+    
+} // namespace mbed
+
+#endif

drivers/CpuUid.h

@@ -0,0 +1,96 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017 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_CPUUID_H
+#define MBED_CPUUID_H
+
+#include <string>
+#include <vector>
+#include "platform/platform.h"
+
+#if defined(DEVICE_CPUUID) || defined(DOXYGEN_ONLY)
+
+
+namespace mbed {
+/** \addtogroup drivers */
+
+/** CPU UID reader class
+ *
+ * @note Synchronization level: Interrupt safe
+ * @ingroup drivers
+ */
+class CpuUid {
+
+public:
+    /** CPU UID array typedef
+     */
+    typedef std::vector<uint8_t> CpuUidArray;
+    
+    /** CpuUid constructor
+     */
+    CpuUid();
+    
+    /** CpuUid destructor
+     */
+    virtual ~CpuUid();    
+
+    /** Get size of CPU UID in bytes
+     * 
+     * @return Size of device's CPU UID in bytes
+     */
+    int size() { return _size; }
+    
+    /** Get CPU UID data pointer
+     * 
+     * @return Pointer to uid data buffer
+     */
+    const uint8_t* data() { return _data; }
+    
+    /** Overload operator for std::string
+     * 
+     * @return string object containing the CPU UID in uppercase hex letters in ascii format
+     */
+    operator std::string();
+    
+    /** Overload operator for CpuUidArray
+     * 
+     * @return CpuUidArray object containing the CPU UID
+     */
+    operator CpuUidArray();
+    
+    /** Overload operator for byte pointer
+     * 
+     * @return Pointer to uid data buffer
+     */
+    operator const uint8_t*() { return _data; }
+
+    /** Overload operator for array subscript
+     * 
+     * @param x CPU UID Byte index
+     * 
+     * @return Byte located at index x
+     */
+    uint8_t operator[](int x);
+    
+private:
+    uint8_t * _data;
+    int _size;
+};
+
+} // namespace mbed
+
+#endif
+
+#endif

mbed.h

@@ -70,6 +70,7 @@
 #include "drivers/RawSerial.h"
 #include "drivers/UARTSerial.h"
 #include "drivers/FlashIAP.h"
+#include "drivers/CpuUid.h"
 
 // mbed Internal components
 #include "drivers/Timer.h"