Library for MAX5387 dual channel digi pot

Dependents:   MAX14871_Shield

Files at this revision

API Documentation at this revision

Comitter:
j3
Date:
Mon Jul 20 02:42:50 2015 +0000
Child:
1:f50b0fb1f7f6
Commit message:
initial commit

Changed in this revision

max5387.cpp Show annotated file Show diff for this revision Revisions of this file
max5387.h Show annotated file Show diff for this revision Revisions of this file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/max5387.cpp	Mon Jul 20 02:42:50 2015 +0000
@@ -0,0 +1,110 @@
+/******************************************************************//**
+* @file max5387.h
+*
+* @author Justin Jordan
+*
+* @version 0.0
+*
+* Started: 18JUL15
+*
+* Updated: 
+*
+* @brief Header file for Max5387 class
+***********************************************************************
+* Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
+*
+* 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 MAXIM INTEGRATED 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.
+*
+* Except as contained in this notice, the name of Maxim Integrated
+* Products, Inc. shall not be used except as stated in the Maxim Integrated
+* Products, Inc. Branding Policy.
+*
+* The mere transfer of this software does not imply any licenses
+* of trade secrets, proprietary technology, copyrights, patents,
+* trademarks, maskwork rights, or any other form of intellectual
+* property whatsoever. Maxim Integrated Products, Inc. retains all
+* ownership rights.
+**********************************************************************/
+
+
+#include "max5387.h"
+
+
+#define MAX5387_CMD_A  0x11
+#define MAX5387_CMD_B  0x12
+#define MAX5387_CMD_AB 0x13
+
+
+//*********************************************************************
+Max5387::Max5387(I2C *i2c_bus, max5387_i2c_adrs_t i2c_adrs): _p_i2c(i2c_bus)
+{
+    _i2c_owner = false;
+    
+    _w_adrs = (i2c_adrs << 1);
+    _p_i2c->frequency(400000);
+}
+  
+    
+//*********************************************************************
+Max5387::Max5387(PinName sda, PinName scl, max5387_i2c_adrs_t i2c_adrs)
+{
+    _p_i2c = new I2C(sda, scl);
+    _i2c_owner = true;
+    
+    _w_adrs = (i2c_adrs << 1);
+    _p_i2c->frequency(400000);
+}
+    
+
+//*********************************************************************  
+Max5387::~Max5387()
+{
+    if(_i2c_owner) 
+    {
+        delete _p_i2c;
+    }
+}
+    
+
+//********************************************************************* 
+int16_t Max5387::write_ch_A(uint8_t val)
+{
+    char data[] = {MAX5387_CMD_A, val};
+    
+    return(_p_i2c->write(_w_adrs, data, 2, false));
+}
+    
+
+//********************************************************************* 
+int16_t Max5387::write_ch_B(uint8_t val)
+{
+    char data[] = {MAX5387_CMD_B, val};
+    
+    return(_p_i2c->write(_w_adrs, data, 2, false));
+}
+    
+    
+//********************************************************************* 
+int16_t Max5387::write_ch_AB(uint8_t val)
+{
+    char data[] = {MAX5387_CMD_AB, val};
+    
+    return(_p_i2c->write(_w_adrs, data, 2, false));
+}
+    
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/max5387.h	Mon Jul 20 02:42:50 2015 +0000
@@ -0,0 +1,163 @@
+/******************************************************************//**
+* @file max5387.h
+*
+* @author Justin Jordan
+*
+* @version 0.0
+*
+* Started: 18JUL15
+*
+* Updated: 
+*
+* @brief Header file for Max5387 class
+***********************************************************************
+* Copyright (C) 2015 Maxim Integrated Products, Inc., All Rights Reserved.
+*
+* 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 MAXIM INTEGRATED 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.
+*
+* Except as contained in this notice, the name of Maxim Integrated
+* Products, Inc. shall not be used except as stated in the Maxim Integrated
+* Products, Inc. Branding Policy.
+*
+* The mere transfer of this software does not imply any licenses
+* of trade secrets, proprietary technology, copyrights, patents,
+* trademarks, maskwork rights, or any other form of intellectual
+* property whatsoever. Maxim Integrated Products, Inc. retains all
+* ownership rights.
+**********************************************************************/
+
+
+#ifndef MAX5387_H
+#define MAX5387_H
+
+#include "mbed.h"
+
+
+class Max5387
+{
+    public:
+    
+    typedef enum
+    {
+        MAX5387_I2C_ADRS0 = 0x28,
+        MAX5387_I2C_ADRS1,
+        MAX5387_I2C_ADRS2,
+        MAX5387_I2C_ADRS3,
+        MAX5387_I2C_ADRS4,
+        MAX5387_I2C_ADRS5,
+        MAX5387_I2C_ADRS6,
+        MAX5387_I2C_ADRS7
+    }max5387_i2c_adrs_t;
+    
+    
+    /**********************************************************//**
+    * @brief Constructor for Max5387 Class.  
+    * 
+    * @details Allows user to use existing I2C object
+    *
+    * On Entry:
+    *     @param[in] i2c_bus - pointer to existing I2C object
+    *     @param[in] i2c_adrs - 7-bit slave address of MAX5387
+    *
+    * On Exit:
+    *    @return none
+    **************************************************************/
+    Max5387(I2C *i2c_bus, max5387_i2c_adrs_t i2c_adrs);
+    
+    
+    /**********************************************************//**
+    * @brief Constructor for Max5387 Class.  
+    * 
+    * @details Allows user to create a new I2C object if not 
+    *          already using one
+    *
+    * On Entry:
+    *     @param[in] sda - sda pin of I2C bus
+    *     @param[in] scl - scl pin of I2C bus
+    *     @param[in] i2c_adrs - 7-bit slave address of MAX5387
+    *
+    * On Exit:
+    *    @return none
+    **************************************************************/
+    Max5387(PinName sda, PinName scl, max5387_i2c_adrs_t i2c_adrs);
+    
+    
+    /**********************************************************//**
+    * @brief Default destructor for Max5387 Class.  
+    *
+    * @details Destroys I2C object if owner 
+    *
+    * On Entry:
+    *
+    * On Exit:
+    *    @return none
+    **************************************************************/
+    ~Max5387();
+    
+    
+    /**********************************************************//**
+    * @brief Write channel A
+    *
+    * @details    
+    *
+    * On Entry:
+    *    @param[in] val - wiper position of channel A
+    *
+    * On Exit:
+    *    @return 0 on success, non-0 on failure
+    **************************************************************/
+    int16_t write_ch_A(uint8_t val);
+    
+    
+    /**********************************************************//**
+    * @brief Write channel B
+    *
+    * @details    
+    *
+    * On Entry:
+    *    @param[in] val - wiper position of channel B
+    *
+    * On Exit:
+    *    @return 0 on success, non-0 on failure
+    **************************************************************/
+    int16_t write_ch_B(uint8_t val);
+    
+    
+    /**********************************************************//**
+    * @brief Write channel A&B
+    *
+    * @details    
+    *
+    * On Entry:
+    *    @param[in] val - wiper position of channel A&B
+    *
+    * On Exit:
+    *    @return 0 on success, non-0 on failure
+    **************************************************************/
+    int16_t write_ch_AB(uint8_t val);
+    
+    
+    private:
+    
+    I2C *_p_i2c;
+    bool _i2c_owner;
+    uint8_t _w_adrs;
+};
+
+#endif/* MAX5387_H */
\ No newline at end of file