Diff: libraries/CN0216/CN0216.h

Revision:

24:dae7123d432a

Child:

29:c693bdaac786

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libraries/CN0216/CN0216.h	Wed May 18 16:57:57 2016 +0300
@@ -0,0 +1,85 @@
+/**
+*   @file     cn0216.h
+*   @brief    Header file for CN0216
+*   @author   Analog Devices Inc.
+*
+* For support please go to:
+* Github: https://github.com/analogdevicesinc/mbed-adi
+* Support: https://ez.analog.com/community/linux-device-drivers/microcontroller-no-os-drivers
+* Product: www.analog.com/EVAL-CN0216-ARDZ
+* More: https://wiki.analog.com/resources/tools-software/mbed-drivers-all
+
+********************************************************************************
+* Copyright 2016(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 "mbed.h"
+#include "AD7791.h"
+
+#ifndef CN0216_H_
+#define CN0216_H_
+
+class CN0216
+{
+public:
+    typedef enum {
+        ZERO_SCALE_CALIBRATION, ///< Calibration of the zero scale value
+        FULL_SCALE_CALIBRATION, ///< Calibration of the full scale value
+        COMPUTE_UNITS_PER_BIT   ///< Units per LSB computation
+    } CalibrationStep_t;
+
+    CN0216(PinName CSAD7791 = D8, PinName MOSI = SPI_MOSI, PinName MISO = SPI_MISO, PinName SCK = SPI_SCK);
+    void init(float cal_weight = _DEFAULT_CAL_WEIGHT, uint8_t mode_val = _DEFAULT_MODE_VAL, uint8_t filter_val = _DEFAULT_FILTER_VAL);
+    void calibrate(CalibrationStep_t cal);
+    float compute_weight(uint32_t data);
+    uint32_t read_u32();
+    float read_weight();
+
+private:
+
+    const static int _NUMBER_OF_SAMPLES = 20; ///< Number of samples used in calibration
+    const static int _DEFAULT_MODE_VAL = AD7791::MD1 | AD7791::MD0; // POWERDOWN MODE
+    const static int _DEFAULT_FILTER_VAL = AD7791::FS0 | AD7791::FS1 | AD7791::FS2;
+    const static int _DEFAULT_CAL_WEIGHT = 1000.0;
+
+    AD7791 ad7791;
+    float _cal_weight;
+    uint32_t _zero_scale_value;
+    uint32_t _full_scale_value;
+    float _weight_units_per_bit;
+
+};
+
+#endif