Diff: Communication.cpp

Revision:

0:0e20215b178e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Communication.cpp	Thu Aug 06 06:52:19 2020 +0000
@@ -0,0 +1,175 @@
+/***************************************************************************//**
+ *   @file   Communication.c
+ *   @brief  Implementation of Communication Driver.
+ *   @author DBogdan (dragos.bogdan@analog.com)
+********************************************************************************
+ * Copyright 2012-2015(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.
+ *
+*******************************************************************************/
+
+/******************************************************************************/
+/* Include Files                                                              */
+/******************************************************************************/
+#include "Communication.h"
+#include "stdlib.h"
+#include "mbed.h"
+/***************************************************************************//**
+ * @brief Initializes the SPI communication peripheral.
+ *
+ * @param lsbFirst - Transfer format (0 or 1).
+ *                   Example: 0x0 - MSB first.
+ *                            0x1 - LSB first.
+ * @param clockFreq - SPI clock frequency (Hz).
+ *                    Example: 1000 - SPI clock frequency is 1 kHz.
+ * @param clockPol - SPI clock polarity (0 or 1).
+ *                   Example: 0x0 - Idle state for clock is a low level; active
+ *                                  state is a high level;
+ *                        0x1 - Idle state for clock is a high level; active
+ *                                  state is a low level.
+ * @param clockEdg - SPI clock edge (0 or 1).
+ *                   Example: 0x0 - Serial output data changes on transition
+ *                                  from idle clock state to active clock state;
+ *                            0x1 - Serial output data changes on transition
+ *                                  from active clock state to idle clock state.
+ *
+ * @return status - Result of the initialization procedure.
+ *                  Example: 1 - if initialization was successful;
+ *                           0 - if initialization was unsuccessful.
+*******************************************************************************/
+#define PRINT_SPI_INFO
+
+
+unsigned char read_buff[AD7190_READ_BUFFER_SIZE];
+
+
+unsigned char SPI_Init(unsigned char lsbFirst,
+                       unsigned long clockFreq,
+                       unsigned char clockPol,
+                       unsigned char clockEdg)
+{
+    /* Add your code here. */
+    spi.format(8,3);
+    spi.frequency(clockFreq);
+    memset(read_buff, 0, AD7190_READ_BUFFER_SIZE);
+    return 1;
+}
+
+/***************************************************************************//**
+ * @brief Reads data from SPI.
+ *
+ * @param data - Data represents the write buffer as an input parameter and the
+ *               read buffer as an output parameter.
+ * @param bytesNumber - Number of bytes to read.
+ *
+ * @return Number of read bytes.
+*******************************************************************************/
+unsigned char SPI_Read(unsigned char* data,
+                       unsigned char bytesNumber)
+{
+    /* Add your code here. */
+    int r_cnt = 0;
+
+    if(bytesNumber > AD7190_READ_BUFFER_SIZE) return 0;
+
+    #ifdef PRINT_SPI_INFO
+ //       pc.printf("[SPI-OTR] 0x%02x\r\n", data[0]);
+    #endif
+
+    data[r_cnt] = spi.write(data[0]);
+    bytesNumber --;
+    r_cnt++;
+
+    #ifdef PRINT_SPI_INFO
+  //      pc.printf("[SPI-IN ] ");
+    #endif
+    while(bytesNumber > 0){
+        data[r_cnt] = spi.write(0xFF);
+       
+        #ifdef PRINT_SPI_INFO
+   //         pc.printf("0x%02x\t", data[r_cnt]);
+        #endif
+
+        r_cnt++;
+        bytesNumber --;
+    }
+
+    #ifdef PRINT_SPI_INFO
+    //    pc.printf("\r\n");
+    #endif
+    
+    return r_cnt;
+}
+
+/***************************************************************************//**
+ * @brief Writes data to SPI.
+ *
+ * @param data - Data represents the write buffer.
+ * @param bytesNumber - Number of bytes to write.
+ *
+ * @return Number of written bytes.
+*******************************************************************************/
+unsigned char SPI_Write(unsigned char* data,
+                        unsigned char bytesNumber)
+{
+    /* Add your code here. */
+    memset(read_buff, 0, AD7190_READ_BUFFER_SIZE);
+    int w_cnt = 0;
+
+    if(bytesNumber > AD7190_READ_BUFFER_SIZE) return 0;
+    
+    #ifdef PRINT_SPI_INFO
+  //      pc.printf("[SPI-OUT] ");
+    #endif
+
+    while(bytesNumber > 0){
+        read_buff[w_cnt] = spi.write(data[w_cnt]);
+
+        #ifdef PRINT_SPI_INFO
+  //          pc.printf("0x%02x\t", data[w_cnt]);
+        #endif
+        
+        w_cnt++;
+        bytesNumber --;
+    }
+
+    #ifdef PRINT_SPI_INFO
+  //      pc.printf("\r\n[SPI-RTN] ");
+        for(int i=0; i<w_cnt; i++){
+   //         pc.printf("0x%02x\t", read_buff[w_cnt]);
+        }
+   //     pc.printf("\r\n");
+    #endif
+    
+    return  w_cnt;
+}