Diff: src/mbed/adi_sense_gpio.cpp

Revision:

7:4dbae381f693

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/mbed/adi_sense_gpio.cpp	Fri Oct 20 15:58:01 2017 +0000
@@ -0,0 +1,294 @@
+/*!
+ ******************************************************************************
+ * @file:   adi_sense_gpio.cpp
+ * @brief:  ADI Sense OS-dependent wrapper layer for GPIO interface
+ *-----------------------------------------------------------------------------
+ */
+
+/******************************************************************************
+Copyright (c) 2017 Emutex Ltd. / 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.
+  - Modified versions of the software must be conspicuously marked as such.
+  - This software is licensed solely and exclusively for use with processors
+    manufactured by or for Analog Devices, Inc.
+  - This software may not be combined or merged with other code in any manner
+    that would cause the software to become subject to terms and conditions
+    which differ from those listed here.
+  - 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.
+
+THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES, INC. AND CONTRIBUTORS "AS IS" AND ANY
+EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT,
+TITLE, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+NO EVENT SHALL ANALOG DEVICES, INC. OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, PUNITIVE OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, DAMAGES ARISING OUT OF CLAIMS OF INTELLECTUAL
+PROPERTY RIGHTS INFRINGEMENT; 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.
+ *
+ *****************************************************************************/
+
+#include <mbed.h>
+
+#include "inc/adi_sense_gpio.h"
+#include "inc/adi_sense_log.h"
+
+class GpioContext
+{
+public:
+    GpioContext(
+        PinName resetPin,
+        PinName errorPin,
+        PinName alertPin,
+        PinName datareadyPin)
+        : _reset(resetPin),
+          _error(errorPin),
+          _alert(alertPin),
+          _dataready(datareadyPin),
+          _errorIrq(errorPin),
+          _alertIrq(alertPin),
+          _datareadyIrq(datareadyPin) {}
+
+    ADI_SENSE_RESULT get(
+        ADI_SENSE_GPIO_PIN ePinId,
+        bool_t *pState);
+
+    ADI_SENSE_RESULT set(
+        ADI_SENSE_GPIO_PIN ePinId,
+        bool_t state);
+
+    ADI_SENSE_RESULT enableIrq(
+        ADI_SENSE_GPIO_PIN ePinId,
+        ADI_SENSE_GPIO_CALLBACK callbackFn,
+        void *pArg);
+
+    ADI_SENSE_RESULT disableIrq(
+        ADI_SENSE_GPIO_PIN ePinId);
+
+private:
+    DigitalOut  _reset;
+
+    DigitalIn   _error;
+    DigitalIn   _alert;
+    DigitalIn   _dataready;
+
+    InterruptIn _errorIrq;
+    InterruptIn _alertIrq;
+    InterruptIn _datareadyIrq;
+
+    ADI_SENSE_GPIO_CALLBACK _errorIrqCallback;
+    ADI_SENSE_GPIO_CALLBACK _alertIrqCallback;
+    ADI_SENSE_GPIO_CALLBACK _datareadyIrqCallback;
+
+    void *_errorIrqArg;
+    void *_alertIrqArg;
+    void *_datareadyIrqArg;
+
+    void _errorIrqHandler()
+    {
+        _errorIrqCallback(ADI_SENSE_GPIO_PIN_ERROR, _errorIrqArg);
+    }
+    void _alertIrqHandler()
+    {
+        _alertIrqCallback(ADI_SENSE_GPIO_PIN_ALERT, _alertIrqArg);
+    }
+    void _datareadyIrqHandler()
+    {
+        _datareadyIrqCallback(ADI_SENSE_GPIO_PIN_DATAREADY, _datareadyIrqArg);
+    }
+};
+
+ADI_SENSE_RESULT GpioContext::get(
+    ADI_SENSE_GPIO_PIN ePinId,
+    bool_t *pState)
+{
+    switch(ePinId)
+    {
+    case ADI_SENSE_GPIO_PIN_ERROR:
+        *pState = _error;
+        return ADI_SENSE_SUCCESS;
+    case ADI_SENSE_GPIO_PIN_ALERT:
+        *pState = _alert;
+        return ADI_SENSE_SUCCESS;
+    case ADI_SENSE_GPIO_PIN_DATAREADY:
+        *pState = _dataready;
+        return ADI_SENSE_SUCCESS;
+    case ADI_SENSE_GPIO_PIN_RESET:
+        *pState = _reset;
+        return ADI_SENSE_SUCCESS;
+    default:
+        return ADI_SENSE_INVALID_DEVICE_NUM;
+    }
+}
+
+ADI_SENSE_RESULT GpioContext::set(
+    ADI_SENSE_GPIO_PIN ePinId,
+    bool_t state)
+{
+    switch(ePinId)
+    {
+    case ADI_SENSE_GPIO_PIN_RESET:
+        _reset = state;
+        break;
+    default:
+        return ADI_SENSE_INVALID_DEVICE_NUM;
+    }
+
+    return ADI_SENSE_SUCCESS;
+}
+
+ADI_SENSE_RESULT GpioContext::enableIrq(
+    ADI_SENSE_GPIO_PIN ePinId,
+    ADI_SENSE_GPIO_CALLBACK callbackFn,
+    void *pArg)
+{
+    switch(ePinId)
+    {
+    case ADI_SENSE_GPIO_PIN_ERROR:
+        _errorIrqCallback = callbackFn;
+        _errorIrqArg = pArg;
+        _errorIrq.rise(callback(this, &GpioContext::_errorIrqHandler));
+        return ADI_SENSE_SUCCESS;
+    case ADI_SENSE_GPIO_PIN_ALERT:
+        _alertIrqCallback = callbackFn;
+        _alertIrqArg = pArg;
+        _alertIrq.rise(callback(this, &GpioContext::_alertIrqHandler));
+        return ADI_SENSE_SUCCESS;
+    case ADI_SENSE_GPIO_PIN_DATAREADY:
+        _datareadyIrqCallback = callbackFn;
+        _datareadyIrqArg = pArg;
+        _datareadyIrq.rise(callback(this, &GpioContext::_datareadyIrqHandler));
+        return ADI_SENSE_SUCCESS;
+    default:
+        return ADI_SENSE_INVALID_DEVICE_NUM;
+    }
+}
+
+ADI_SENSE_RESULT GpioContext::disableIrq(
+    ADI_SENSE_GPIO_PIN ePinId)
+{
+    switch(ePinId)
+    {
+    case ADI_SENSE_GPIO_PIN_ERROR:
+        _errorIrq.rise(NULL);
+        return ADI_SENSE_SUCCESS;
+    case ADI_SENSE_GPIO_PIN_ALERT:
+        _alertIrq.rise(NULL);
+        return ADI_SENSE_SUCCESS;
+    case ADI_SENSE_GPIO_PIN_DATAREADY:
+        _datareadyIrq.rise(NULL);
+        return ADI_SENSE_SUCCESS;
+    default:
+        return ADI_SENSE_INVALID_DEVICE_NUM;
+    }
+}
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Open the GPIO interface and allocate resources
+ */
+ADI_SENSE_RESULT adi_sense_GpioOpen(
+    ADI_SENSE_PLATFORM_GPIO_CONFIG *pConfig,
+    ADI_SENSE_GPIO_HANDLE *phDevice)
+{
+    GpioContext *pCtx = new GpioContext((PinName)pConfig->resetPin,
+                                        (PinName)pConfig->errorPin,
+                                        (PinName)pConfig->alertPin,
+                                        (PinName)pConfig->datareadyPin);
+    if (!pCtx)
+    {
+        ADI_SENSE_LOG_ERROR("Failed to allocate memory for GPIO context");
+        return ADI_SENSE_NO_MEM;
+    }
+
+    *phDevice = reinterpret_cast<ADI_SENSE_GPIO_HANDLE>(pCtx);
+    return ADI_SENSE_SUCCESS;
+}
+
+/*
+ * Get the state of the specified GPIO pin
+ */
+ADI_SENSE_RESULT adi_sense_GpioGet(
+    ADI_SENSE_GPIO_HANDLE hDevice,
+    ADI_SENSE_GPIO_PIN ePinId,
+    bool_t *pbState)
+{
+    GpioContext *pCtx = reinterpret_cast<GpioContext *>(hDevice);
+
+    return pCtx->get(ePinId, pbState);
+}
+
+/*
+ * Set the state of the specified GPIO pin
+ */
+ADI_SENSE_RESULT adi_sense_GpioSet(
+    ADI_SENSE_GPIO_HANDLE hDevice,
+    ADI_SENSE_GPIO_PIN ePinId,
+    bool_t bState)
+{
+    GpioContext *pCtx = reinterpret_cast<GpioContext *>(hDevice);
+
+    return pCtx->set(ePinId, bState);
+}
+
+/*
+ * Enable interrupt notifications on the specified GPIO pin
+ */
+ADI_SENSE_RESULT adi_sense_GpioIrqEnable(
+    ADI_SENSE_GPIO_HANDLE hDevice,
+    ADI_SENSE_GPIO_PIN ePinId,
+    ADI_SENSE_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
+ */
+ADI_SENSE_RESULT adi_sense_GpioIrqDisable(
+    ADI_SENSE_GPIO_HANDLE hDevice,
+    ADI_SENSE_GPIO_PIN ePinId)
+{
+    GpioContext *pCtx = reinterpret_cast<GpioContext *>(hDevice);
+
+    return pCtx->disableIrq(ePinId);
+}
+
+/*
+ * Close the GPIO interface and free resources
+ */
+void adi_sense_GpioClose(
+    ADI_SENSE_GPIO_HANDLE hDevice)
+{
+    GpioContext *pCtx = reinterpret_cast<GpioContext *>(hDevice);
+
+    delete pCtx;
+}
+
+#ifdef __cplusplus
+}
+#endif
+