DEV: remove unused range headers

include/com/sequencer.h

@@ -31,7 +31,6 @@
 #ifndef TBX_COM_SEQUENCER_H_
 #define TBX_COM_SEQUENCER_H_
 
-
 #include <core/core.h>
 #include <core/crtp.h>
 #include <cont/range.h>

include/cont/deque.h

@@ -33,7 +33,6 @@
 
 #include <core/core.h>
 #include <core/ring_iterator.h>
-#include <cont/range.h>
 
 #include <array>
 #include <atomic>

include/drv/cli_device.h

@@ -31,12 +31,9 @@
 #ifndef TBX_DRV_CLI_DEVICE_H_
 #define TBX_DRV_CLI_DEVICE_H_
 
-#define __cplusplus 201703L
-
 #include <core/core.h>
 #include <core/crtp.h>
 #include <cont/equeue.h>
-#include <cont/range.h>
 #include <com/sequencer.h>
 
 #include <cstring>

include/drv/gpio.h

@@ -0,0 +1,107 @@
+/*!
+ * \file drv/gpio.h
+ * \brief
+ *      A STM32 gpio wrapper class
+ *
+ * \copyright Copyright (C) 2021 Christos Choutouridis <christos@choutouridis.net>
+ *
+ * <dl class=\"section copyright\"><dt>License</dt><dd>
+ * The MIT License (MIT)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ * </dd></dl>
+ */
+
+#ifndef TBX_DRV_GPIO_H_
+#define TBX_DRV_GPIO_H_
+
+#include <core/core.h>
+
+namespace tbx {
+
+    /*!
+     * CRTP class for gpio digital input-output.
+     *
+     * The derived class requirements are:
+     *  - bool read_impl ()
+     *  - void write_impl(bool)
+     *
+     * \tparam  Impl_t  The type of derived class
+     */
+    template <typename Impl_t>
+    class DigitalInOut {
+    public:
+            _CRTP_IMPL(Impl_t);
+
+        /*!
+         * \name Object lifetime
+         */
+        //! @{
+        protected:
+            DigitalInOut() noexcept = default;
+            ~DigitalInOut() = default;
+            DigitalInOut(const DigitalInOut&)             = delete;   //!< No copy constructions
+            DigitalInOut operator=(const DigitalInOut&)   = delete;   //!< No copies
+
+        //! @}
+
+        //! \name Public interface
+        //! @{
+        public:
+            //! Reads the state of the pin. This is true for both input and output pins.
+            //! \return     The state of the pin
+            bool read () noexcept { return impl().read_impl (); }
+            //! Write a new state to pin. If the pin is set for output, otherwise this state will remain
+            //! to pin registers and reflect to the pin state if we select output mode
+            void write (bool state) noexcept { impl().write_impl(state); }
+
+            //! Implicit conversion to bool for reading operations
+            operator bool () noexcept {
+                return read();
+            }
+            //! Stream from bool for write operations
+            DigitalInOut& operator<< (bool state) noexcept {
+                write(state);
+                return *this;
+            }
+            //! Right stream to bool for read operations
+            DigitalInOut& operator>> (bool& state) noexcept {
+                state = read();
+                return *this;
+            }
+        //! @}
+    };
+
+    /*!
+     * This definition enables the "data << pin" syntax for read operation
+     *
+     * \tparam Impl_t   The derived class type of the DigitalInOut
+     *
+     * \param lhs   Left hand site operand
+     * \param rhs   Right hand site operand
+     * \return      The read value
+     */
+    template<typename Impl_t>
+    bool operator<<(bool& lhs, DigitalInOut<Impl_t>& rhs) noexcept {
+        lhs = rhs.read();
+        return lhs;
+    }
+}
+
+#endif //#ifndef TBX_DRV_STM32GPIO_H_

include/tbx.h

@@ -37,6 +37,9 @@
 #include <cont/queue.h>
 #include <cont/equeue.h>
 
+#include <utils/shared.h>
+
 #include <drv/cli_device.h>
+#include <drv/gpio.h>
 
 #endif /* TBX_H_ */

include/utils/shared.h

@@ -0,0 +1,107 @@
+/*!
+ * \file utils/shared.h
+ * \brief
+ *      A CRTP base class to provide acquire/release functionality for shared resources
+ *      without handle pointers.
+ *
+ * \copyright Copyright (C) 2021 Christos Choutouridis <christos@choutouridis.net>
+ *
+ * <dl class=\"section copyright\"><dt>License</dt><dd>
+ * The MIT License (MIT)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ * </dd></dl>
+ */
+
+#ifndef TBX_UTILS_SHARED_H_
+#define TBX_UTILS_SHARED_H_
+
+#include <core/core.h>
+#include <core/crtp.h>
+
+#include <utility>
+
+namespace tbx {
+
+/*!
+ * A CRTP base class to provide acquire/release functionality for shared resources
+ * without handle pointers.
+ *
+ * \example
+ * \code
+ * class GPIOClock : public shared<GPIOClock> {
+ *     friend shared<GPIOClock>;
+ *     void acquire_impl() { // HAL enable gpio clock }
+ *     void release_impl() { // HAL disable gpio clock }
+ * };
+ * GPIOClock clk;
+ * class Pin {
+ *     Pin() {
+ *         clk.acquire();
+ *         // init pin
+ *     }
+ *     ~Pin() {
+ *         // de-init pin
+ *         clk.release();
+ *     }
+ * };
+ * \endcode
+ *
+ * \tparam Impl_t   The derived class type
+ */
+template <typename Impl_t>
+class shared {
+        _CRTP_IMPL(Impl_t);
+        int count {};   //!< acquisition counter
+
+    protected:
+        shared() noexcept               = default;
+        shared(const shared&)           = delete;   //!< No copies
+        shared operator=(const shared&) = delete;   //!< No copies
+
+    public:
+        /*!
+         * Acquires the recourse. If it is the first call to acquire the resource we actually acquire it.
+         * Otherwise we just keep track of how many acquisition have made.
+         *
+         * \tparam Ts   The types of possible arguments
+         * \param args  Possible arguments to pass to acquire_impl() of derived class
+         */
+        template <typename ...Ts>
+        void acquire (Ts&&... args) {
+            if (!count++)   impl().acquire_impl(std::forward<Ts>(args)...);
+        }
+        /*!
+         * Release the recourse. On every call we decrease the count of acquisitions. If we reach zero
+         * we actually release the resource.
+         *
+         * \tparam Ts   The types of possible arguments
+         * \param args  Possible arguments to pass to release_impl() of derived class
+         */
+        template <typename ...Ts>
+        void release (Ts&&... args) noexcept {
+            if (--count <= 0) {
+                impl().release_impl(std::forward<Ts>(args)...);
+                count =0;
+            }
+        }
+};
+
+}
+#endif /* TBX_UTILS_SHARED_H_ */