Diff: ISO8200BQ/ISO8200BQ.cpp

Revision:

0:c77427077cff

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+++ b/ISO8200BQ/ISO8200BQ.cpp	Mon Feb 12 17:22:42 2018 +0000
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+/**
+ ******************************************************************************
+ * @file    ISO8200BQ.cpp
+ * @author  ST CLab
+ * @version V1.0.0
+ * @date    1 February 2018
+ * @brief   Implementation of a ISO8200BQ class
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *   1. Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *   2. 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.
+ *   3. Neither the name of STMicroelectronics nor the names of its contributors
+ *      may be used to endorse or promote products derived from this software
+ *      without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, 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.
+ *
+ ******************************************************************************
+ */
+ 
+ /* Includes ------------------------------------------------------------------*/
+
+#include "ISO8200BQ.h"
+
+
+/* Class Implementation ------------------------------------------------------*/
+
+    /** Constructor
+     * @param OUT_EN Output enable pin.
+     * @param N_SYNC Input-to-output synchronization signal. Active low.
+     * @param N_LOAD Load input data signal. Active low.
+     */
+
+    ISO8200BQ::ISO8200BQ(PinName OUT_EN, PinName N_SYNC, 
+            PinName N_LOAD) : _out_en(OUT_EN), _n_sync(N_SYNC), _n_load(N_LOAD)
+    {
+        /* start with the component disabled*/
+        _out_en = 0;
+    };
+
+   /**
+    * @brief  Getting the ID of the component.
+    * @param  id Pointer to an allocated variable to store the ID into.
+    * @retval "0" in case of success, an error code otherwise.
+    */
+    int ISO8200BQ::read_id(uint8_t *id = NULL)
+    {
+        return 0;
+    }    
+
+    /**
+     *
+     * @brief One time device initialization
+     *
+     * @param void
+     * @retval "0" in case of success, an error code otherwise.
+    */
+    int ISO8200BQ::init(void *init)
+    {
+        /* initalize with SYNC and LOAD signals disabled*/
+        _n_sync = _n_load = 1;
+        return 0;
+    }   
+    
+    /**
+     *
+     * @brief Enable/Disable all outputs 
+     *
+     * @param enable Enable the outputs when true, disable otherwise
+    */
+    void ISO8200BQ::enable_outputs(bool enable) {
+        _out_en = enable ? 1 : 0;
+    }
+    
+    /**
+     *
+     * @brief Get outputs enabling status 
+     *
+     * @retval Returns true if outputs are enabled, false otherwise
+    */
+    bool ISO8200BQ::are_outputs_enabled (void) {
+        return (_out_en == 0) ? false : true;
+    }
+    
+    /**
+     *
+     * @brief Load input pin status into input buffer (synch mode) 
+     *
+    */
+    void ISO8200BQ::sync_mode_load_inputs (void) {
+        _n_load = 1; //disabled
+        _n_sync = 1; //disabled
+        wait_us(20); //tdis(sync)
+        _n_load = 0; //enabled
+    }
+    
+    /**
+     *
+     * @brief Update outputs accordingly to input buffer (synch mode) 
+     *
+    */
+    void ISO8200BQ::sync_mode_update_outputs(void) {
+        wait_us(100); // tw(load)
+        _n_load = 1; //disabled
+        wait_us(1); //tsu(load)
+        _n_sync = 0; //enabled
+        wait_us(100); // tw(sync)
+        _n_sync = 1; // trigger output updates (on rising edge)
+    }
+    
+    /**
+     *
+     * @brief Update outputs accordingly to input pins (direct mode) 
+     *
+    */
+    void ISO8200BQ::direct_mode (void) {
+        _n_load = 0; //enabled
+        _n_sync = 0; //enabled
+        wait_us(1); //tinld
+    }
+    
+    
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