Analog Devices / mbed-drivers

A collection of Analog Devices drivers for the mbed platform

For additional information check out the mbed page of the Analog Devices wiki: https://wiki.analog.com/resources/tools-software/mbed-drivers-all

examples/cn0216_example/main.cpp@17:b8356808e8ad, 2016-04-29 (annotated)

Committer:
Adrian Suciu
Date:
Fri Apr 29 17:34:07 2016 +0300
Revision:
17:b8356808e8ad
Parent:
13:66c8e4ce4ff1
Child:
19:fb92949e59c9
Child:
18:7d35420ff4aa
Fixed code style and added doxygen tags

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Adrian Suciu 13:66c8e4ce4ff1 1 /**
Adrian Suciu 13:66c8e4ce4ff1 2 * @file main.cpp
Adrian Suciu 13:66c8e4ce4ff1 3 * @brief Main file for the CN0357-example project
Adrian Suciu 13:66c8e4ce4ff1 4 * @author Analog Devices Inc.
Adrian Suciu 13:66c8e4ce4ff1 5 *
Adrian Suciu 13:66c8e4ce4ff1 6 * For support please go to:
Adrian Suciu 13:66c8e4ce4ff1 7 * Github: https://github.com/analogdevicesinc/mbed-adi
Adrian Suciu 13:66c8e4ce4ff1 8 * Support: https://ez.analog.com/community/linux-device-drivers/microcontroller-no-os-drivers
Adrian Suciu 13:66c8e4ce4ff1 9 * Product: www.analog.com/EVAL-CN0357-ARDZ
Adrian Suciu 13:66c8e4ce4ff1 10 * More: https://wiki.analog.com/resources/tools-software/mbed-drivers-all
Adrian Suciu 13:66c8e4ce4ff1 11
Adrian Suciu 13:66c8e4ce4ff1 12 ********************************************************************************
Adrian Suciu 13:66c8e4ce4ff1 13 * Copyright 2016(c) Analog Devices, Inc.
Adrian Suciu 13:66c8e4ce4ff1 14 *
Adrian Suciu 13:66c8e4ce4ff1 15 * All rights reserved.
Adrian Suciu 13:66c8e4ce4ff1 16 *
Adrian Suciu 13:66c8e4ce4ff1 17 * Redistribution and use in source and binary forms, with or without
Adrian Suciu 13:66c8e4ce4ff1 18 * modification, are permitted provided that the following conditions are met:
Adrian Suciu 13:66c8e4ce4ff1 19 * - Redistributions of source code must retain the above copyright
Adrian Suciu 13:66c8e4ce4ff1 20 * notice, this list of conditions and the following disclaimer.
Adrian Suciu 13:66c8e4ce4ff1 21 * - Redistributions in binary form must reproduce the above copyright
Adrian Suciu 13:66c8e4ce4ff1 22 * notice, this list of conditions and the following disclaimer in
Adrian Suciu 13:66c8e4ce4ff1 23 * the documentation and/or other materials provided with the
Adrian Suciu 13:66c8e4ce4ff1 24 * distribution.
Adrian Suciu 13:66c8e4ce4ff1 25 * - Neither the name of Analog Devices, Inc. nor the names of its
Adrian Suciu 13:66c8e4ce4ff1 26 * contributors may be used to endorse or promote products derived
Adrian Suciu 13:66c8e4ce4ff1 27 * from this software without specific prior written permission.
Adrian Suciu 13:66c8e4ce4ff1 28 * - The use of this software may or may not infringe the patent rights
Adrian Suciu 13:66c8e4ce4ff1 29 * of one or more patent holders. This license does not release you
Adrian Suciu 13:66c8e4ce4ff1 30 * from the requirement that you obtain separate licenses from these
Adrian Suciu 13:66c8e4ce4ff1 31 * patent holders to use this software.
Adrian Suciu 13:66c8e4ce4ff1 32 * - Use of the software either in source or binary form, must be run
Adrian Suciu 13:66c8e4ce4ff1 33 * on or directly connected to an Analog Devices Inc. component.
Adrian Suciu 13:66c8e4ce4ff1 34 *
Adrian Suciu 13:66c8e4ce4ff1 35 * THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES "AS IS" AND ANY EXPRESS OR
Adrian Suciu 13:66c8e4ce4ff1 36 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, NON-INFRINGEMENT,
Adrian Suciu 13:66c8e4ce4ff1 37 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
Adrian Suciu 13:66c8e4ce4ff1 38 * IN NO EVENT SHALL ANALOG DEVICES BE LIABLE FOR ANY DIRECT, INDIRECT,
Adrian Suciu 13:66c8e4ce4ff1 39 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
Adrian Suciu 13:66c8e4ce4ff1 40 * LIMITED TO, INTELLECTUAL PROPERTY RIGHTS, PROCUREMENT OF SUBSTITUTE GOODS OR
Adrian Suciu 13:66c8e4ce4ff1 41 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
Adrian Suciu 13:66c8e4ce4ff1 42 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
Adrian Suciu 13:66c8e4ce4ff1 43 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
Adrian Suciu 13:66c8e4ce4ff1 44 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Adrian Suciu 13:66c8e4ce4ff1 45 *
Adrian Suciu 13:66c8e4ce4ff1 46 ********************************************************************************/
Adrian Suciu 13:66c8e4ce4ff1 47 #include "mbed.h"
Adrian Suciu 13:66c8e4ce4ff1 48 #include "CN0216.h"
Adrian Suciu 13:66c8e4ce4ff1 49
Adrian Suciu 13:66c8e4ce4ff1 50 const float CAL_WEIGHT = (150.0);
Adrian Suciu 13:66c8e4ce4ff1 51
Adrian Suciu 13:66c8e4ce4ff1 52 Serial pc(USBTX, USBRX); ///< Serial interface to the pc
Adrian Suciu 13:66c8e4ce4ff1 53
Adrian Suciu 13:66c8e4ce4ff1 54 void flush_serial_buffer(void)
Adrian Suciu 13:66c8e4ce4ff1 55 {
Adrian Suciu 17:b8356808e8ad 56 while (pc.readable()) pc.getc();
Adrian Suciu 17:b8356808e8ad 57 return;
Adrian Suciu 13:66c8e4ce4ff1 58 }
Adrian Suciu 13:66c8e4ce4ff1 59
Adrian Suciu 13:66c8e4ce4ff1 60 void display_data(uint32_t data, float weight)
Adrian Suciu 13:66c8e4ce4ff1 61 {
Adrian Suciu 13:66c8e4ce4ff1 62 pc.printf("\r\nADC Input Voltage input = %f V", data); /* Send valid voltage input value */
Adrian Suciu 13:66c8e4ce4ff1 63 pc.printf("\r\nSensor Input Weight = %f grams", weight); /* Send valid grams value */
Adrian Suciu 13:66c8e4ce4ff1 64 pc.printf("\r\n");
Adrian Suciu 13:66c8e4ce4ff1 65 }
Adrian Suciu 13:66c8e4ce4ff1 66
Adrian Suciu 13:66c8e4ce4ff1 67 /**
Adrian Suciu 13:66c8e4ce4ff1 68 * Project entry-point - initializes the CN0357 shield, reads the data when the ADC is ready and outputs the sensor
Adrian Suciu 13:66c8e4ce4ff1 69 * value in PPM
Adrian Suciu 13:66c8e4ce4ff1 70 */
Adrian Suciu 13:66c8e4ce4ff1 71
Adrian Suciu 13:66c8e4ce4ff1 72 //#define SINGLE_CONVERSION
Adrian Suciu 13:66c8e4ce4ff1 73 #define CONTINOUS_CONVERSION
Adrian Suciu 13:66c8e4ce4ff1 74
Adrian Suciu 13:66c8e4ce4ff1 75 int main()
Adrian Suciu 13:66c8e4ce4ff1 76 {
Adrian Suciu 13:66c8e4ce4ff1 77 /* Main variables */
Adrian Suciu 17:b8356808e8ad 78 CN0216 cn0216;
Adrian Suciu 13:66c8e4ce4ff1 79 #ifdef SINGLE_CONVERSION
Adrian Suciu 13:66c8e4ce4ff1 80 cn0216.init(CAL_WEIGHT);
Adrian Suciu 13:66c8e4ce4ff1 81 #elif defined CONTINOUS_CONVERSION
Adrian Suciu 13:66c8e4ce4ff1 82 cn0216.init(CAL_WEIGHT, 0x00, 0x07);
Adrian Suciu 13:66c8e4ce4ff1 83 #else
Adrian Suciu 13:66c8e4ce4ff1 84 #error define SINGLE_CONVERSION or CONTINOUS_CONVERSION, but not both
Adrian Suciu 13:66c8e4ce4ff1 85 #endif
Adrian Suciu 13:66c8e4ce4ff1 86 /* Calibration sequence */
Adrian Suciu 17:b8356808e8ad 87
Adrian Suciu 13:66c8e4ce4ff1 88 pc.printf("\r\n Calibrating zero scale. Remove all weights from scale. Press any key to begin ..");
Adrian Suciu 13:66c8e4ce4ff1 89 while(!pc.readable());
Adrian Suciu 13:66c8e4ce4ff1 90 flush_serial_buffer();
Adrian Suciu 13:66c8e4ce4ff1 91 pc.printf("\r\n Calibrating . . . ");
Adrian Suciu 13:66c8e4ce4ff1 92 cn0216.calibrate(CN0216::ZERO_SCALE_CALIBRATION);
Adrian Suciu 13:66c8e4ce4ff1 93 pc.printf("done ! ");
Adrian Suciu 13:66c8e4ce4ff1 94
Adrian Suciu 13:66c8e4ce4ff1 95 pc.printf("\r\n Calibrating full scale. Put calibration weight on scale. Press any key to begin ..");
Adrian Suciu 13:66c8e4ce4ff1 96 while(!pc.readable());
Adrian Suciu 13:66c8e4ce4ff1 97 flush_serial_buffer();
Adrian Suciu 13:66c8e4ce4ff1 98 pc.printf("\r\n Calibrating . . . ");
Adrian Suciu 13:66c8e4ce4ff1 99 cn0216.calibrate(CN0216::FULL_SCALE_CALIBRATION);
Adrian Suciu 13:66c8e4ce4ff1 100 pc.printf("done ! ");
Adrian Suciu 13:66c8e4ce4ff1 101
Adrian Suciu 13:66c8e4ce4ff1 102 pc.printf("\r\n Calibration successful ");
Adrian Suciu 17:b8356808e8ad 103 cn0216.calibrate(CN0216::COMPUTE_UNITS_PER_BIT);
Adrian Suciu 13:66c8e4ce4ff1 104
Adrian Suciu 13:66c8e4ce4ff1 105 /* Infinite loop */
Adrian Suciu 13:66c8e4ce4ff1 106 while (1) {
Adrian Suciu 13:66c8e4ce4ff1 107 wait_ms(1000);
Adrian Suciu 13:66c8e4ce4ff1 108 {
Adrian Suciu 13:66c8e4ce4ff1 109 uint32_t data = cn0216.read_u32();
Adrian Suciu 17:b8356808e8ad 110 float weight = cn0216.compute_weight(data); // Convert ADC data to voltage
Adrian Suciu 13:66c8e4ce4ff1 111 display_data(data, weight); // Display data thru UART
Adrian Suciu 13:66c8e4ce4ff1 112 }
Adrian Suciu 13:66c8e4ce4ff1 113 }
Adrian Suciu 13:66c8e4ce4ff1 114
Adrian Suciu 13:66c8e4ce4ff1 115
Adrian Suciu 13:66c8e4ce4ff1 116 /* Infinite loop, never returns. */
Adrian Suciu 13:66c8e4ce4ff1 117 }
Adrian Suciu 13:66c8e4ce4ff1 118