Diff: src/mbed/admw_gpio.cpp

Revision:

5:0728bde67bdb

Parent:

0:85855ecd3257

Child:

23:bb685f35b08b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/mbed/admw_gpio.cpp	Wed Jun 05 05:39:15 2019 +0000
@@ -0,0 +1,266 @@
+/******************************************************************************
+Copyright 2017 (c) Analog Devices, Inc.
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+  - Redistributions of source code must retain the above copyright
+    notice, this list of conditions and the following disclaimer.
+  - Redistributions in binary form must reproduce the above copyright
+    notice, this list of conditions and the following disclaimer in
+    the documentation and/or other materials provided with the
+    distribution.
+  - Neither the name of Analog Devices, Inc. nor the names of its
+    contributors may be used to endorse or promote products derived
+    from this software without specific prior written permission.
+  - The use of this software may or may not infringe the patent rights
+    of one or more patent holders. This license does not release you
+    from the requirement that you obtain separate licenses from these
+    patent holders to use this software.
+  - Use of the software either in source or binary form, must be run
+    on or directly connected to an Analog Devices Inc. component.
+
+THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT,
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *****************************************************************************/
+
+/*!
+ ******************************************************************************
+ * @file:
+ * @brief:  ADMW OS-dependent wrapper layer for GPIO interface
+ *-----------------------------------------------------------------------------
+ */
+
+#include <mbed.h>
+
+#include "inc/admw_gpio.h"
+#include "inc/admw_log.h"
+
+class GpioContext
+{
+public:
+    GpioContext(
+        PinName resetPin,
+        PinName alertErrorPin,
+        PinName datareadyPin)
+        : _reset(resetPin),
+          _alertError(alertErrorPin),
+          _dataready(datareadyPin),
+          _alertErrorIrq(alertErrorPin),
+          _datareadyIrq(datareadyPin) {}
+
+    ADMW_RESULT get(
+        ADMW_GPIO_PIN ePinId,
+        bool *pState);
+
+    ADMW_RESULT set(
+        ADMW_GPIO_PIN ePinId,
+        bool state);
+
+    ADMW_RESULT enableIrq(
+        ADMW_GPIO_PIN ePinId,
+        ADMW_GPIO_CALLBACK callbackFn,
+        void *pArg);
+
+    ADMW_RESULT disableIrq(
+        ADMW_GPIO_PIN ePinId);
+
+private:
+    DigitalOut  _reset;
+
+    DigitalIn   _alertError;
+    DigitalIn   _dataready;
+
+    InterruptIn _alertErrorIrq;
+    InterruptIn _datareadyIrq;
+
+    ADMW_GPIO_CALLBACK _alertErrorIrqCallback;
+    ADMW_GPIO_CALLBACK _datareadyIrqCallback;
+
+    void *_alertErrorIrqArg;
+    void *_datareadyIrqArg;
+
+    void _alertErrorIrqHandler()
+    {
+        _alertErrorIrqCallback(ADMW_GPIO_PIN_ALERT_ERROR, _alertErrorIrqArg);
+    }
+    void _datareadyIrqHandler()
+    {
+        _datareadyIrqCallback(ADMW_GPIO_PIN_DATAREADY, _datareadyIrqArg);
+    }
+};
+
+ADMW_RESULT GpioContext::get(
+    ADMW_GPIO_PIN ePinId,
+    bool *pState)
+{
+    switch(ePinId)
+    {
+    case ADMW_GPIO_PIN_ALERT_ERROR:
+        *pState = _alertError;
+        return ADMW_SUCCESS;
+    case ADMW_GPIO_PIN_DATAREADY:
+        *pState = _dataready;
+        return ADMW_SUCCESS;
+    case ADMW_GPIO_PIN_RESET:
+        *pState = _reset;
+        return ADMW_SUCCESS;
+    default:
+        return ADMW_INVALID_DEVICE_NUM;
+    }
+}
+
+ADMW_RESULT GpioContext::set(
+    ADMW_GPIO_PIN ePinId,
+    bool state)
+{
+    switch(ePinId)
+    {
+    case ADMW_GPIO_PIN_RESET:
+        _reset = state;
+        break;
+    default:
+        return ADMW_INVALID_DEVICE_NUM;
+    }
+
+    return ADMW_SUCCESS;
+}
+
+ADMW_RESULT GpioContext::enableIrq(
+    ADMW_GPIO_PIN ePinId,
+    ADMW_GPIO_CALLBACK callbackFn,
+    void *pArg)
+{
+    switch(ePinId)
+    {
+    case ADMW_GPIO_PIN_ALERT_ERROR:
+        _alertErrorIrqCallback = callbackFn;
+        _alertErrorIrqArg = pArg;
+        _alertErrorIrq.rise(callback(this, &GpioContext::_alertErrorIrqHandler));
+        return ADMW_SUCCESS;
+    case ADMW_GPIO_PIN_DATAREADY:
+        _datareadyIrqCallback = callbackFn;
+        _datareadyIrqArg = pArg;
+        _datareadyIrq.rise(callback(this, &GpioContext::_datareadyIrqHandler));
+        return ADMW_SUCCESS;
+    default:
+        return ADMW_INVALID_DEVICE_NUM;
+    }
+}
+
+ADMW_RESULT GpioContext::disableIrq(
+    ADMW_GPIO_PIN ePinId)
+{
+    switch(ePinId)
+    {
+    case ADMW_GPIO_PIN_ALERT_ERROR:
+        _alertErrorIrq.rise(NULL);
+        return ADMW_SUCCESS;
+    case ADMW_GPIO_PIN_DATAREADY:
+        _datareadyIrq.rise(NULL);
+        return ADMW_SUCCESS;
+    default:
+        return ADMW_INVALID_DEVICE_NUM;
+    }
+}
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Open the GPIO interface and allocate resources
+ */
+ADMW_RESULT admw_GpioOpen(
+    ADMW_PLATFORM_GPIO_CONFIG *pConfig,
+    ADMW_GPIO_HANDLE *phDevice)
+{
+    GpioContext *pCtx = new GpioContext((PinName)pConfig->resetPin,
+                                        (PinName)pConfig->alertErrorPin,
+                                        (PinName)pConfig->datareadyPin);
+    if (!pCtx)
+    {
+        ADMW_LOG_ERROR("Failed to allocate memory for GPIO context");
+        return ADMW_NO_MEM;
+    }
+
+    *phDevice = reinterpret_cast<ADMW_GPIO_HANDLE>(pCtx);
+    return ADMW_SUCCESS;
+}
+
+/*
+ * Get the state of the specified GPIO pin
+ */
+ADMW_RESULT admw_GpioGet(
+    ADMW_GPIO_HANDLE hDevice,
+    ADMW_GPIO_PIN ePinId,
+    bool *pbState)
+{
+    GpioContext *pCtx = reinterpret_cast<GpioContext *>(hDevice);
+
+    return pCtx->get(ePinId, pbState);
+}
+
+/*
+ * Set the state of the specified GPIO pin
+ */
+ADMW_RESULT admw_GpioSet(
+    ADMW_GPIO_HANDLE hDevice,
+    ADMW_GPIO_PIN ePinId,
+    bool bState)
+{
+    GpioContext *pCtx = reinterpret_cast<GpioContext *>(hDevice);
+
+    return pCtx->set(ePinId, bState);
+}
+
+/*
+ * Enable interrupt notifications on the specified GPIO pin
+ */
+ADMW_RESULT admw_GpioIrqEnable(
+    ADMW_GPIO_HANDLE hDevice,
+    ADMW_GPIO_PIN ePinId,
+    ADMW_GPIO_CALLBACK callback,
+    void *arg)
+{
+    GpioContext *pCtx = reinterpret_cast<GpioContext *>(hDevice);
+
+    return pCtx->enableIrq(ePinId, callback, arg);
+}
+
+/*
+ * Disable interrupt notifications on the specified GPIO pin
+ */
+ADMW_RESULT admw_GpioIrqDisable(
+    ADMW_GPIO_HANDLE hDevice,
+    ADMW_GPIO_PIN ePinId)
+{
+    GpioContext *pCtx = reinterpret_cast<GpioContext *>(hDevice);
+
+    return pCtx->disableIrq(ePinId);
+}
+
+/*
+ * Close the GPIO interface and free resources
+ */
+void admw_GpioClose(
+    ADMW_GPIO_HANDLE hDevice)
+{
+    GpioContext *pCtx = reinterpret_cast<GpioContext *>(hDevice);
+
+    delete pCtx;
+}
+
+#ifdef __cplusplus
+}
+#endif