Diff: examples/cn0216_example/main.cpp

Revision:

13:66c8e4ce4ff1

Child:

17:b8356808e8ad

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/cn0216_example/main.cpp	Fri Apr 29 16:19:00 2016 +0300
@@ -0,0 +1,118 @@
+/**
+*   @file     main.cpp
+*   @brief    Main file for the CN0357-example project
+*   @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-CN0357-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 "CN0216.h"
+
+const float CAL_WEIGHT = (150.0);
+
+Serial pc(USBTX, USBRX); ///< Serial interface to the pc
+
+void flush_serial_buffer(void)
+{
+	while (pc.readable()) pc.getc();
+	return;
+}
+
+void display_data(uint32_t data, float weight)
+{
+    pc.printf("\r\nADC Input Voltage input = %f V", data);           /* Send valid voltage input value */
+    pc.printf("\r\nSensor Input Weight = %f grams", weight);         /* Send valid grams value */
+    pc.printf("\r\n");
+}
+
+/**
+ * Project entry-point - initializes the CN0357 shield, reads the data when the ADC is ready and outputs the sensor
+ * value in PPM
+ */
+
+//#define SINGLE_CONVERSION
+#define CONTINOUS_CONVERSION
+
+int main()
+{
+    /* Main variables */
+    CN0216 cn0216;    
+#ifdef SINGLE_CONVERSION
+    cn0216.init(CAL_WEIGHT);
+#elif defined CONTINOUS_CONVERSION
+    cn0216.init(CAL_WEIGHT, 0x00, 0x07);
+#else
+#error define SINGLE_CONVERSION or CONTINOUS_CONVERSION, but not both
+#endif
+    /* Calibration sequence */
+    
+    pc.printf("\r\n Calibrating zero scale. Remove all weights from scale. Press any key to begin ..");
+    while(!pc.readable());
+    flush_serial_buffer();
+    pc.printf("\r\n Calibrating . . . ");
+    cn0216.calibrate(CN0216::ZERO_SCALE_CALIBRATION);
+    pc.printf("done ! ");
+
+    pc.printf("\r\n Calibrating full scale. Put calibration weight on scale. Press any key to begin ..");
+    while(!pc.readable());
+    flush_serial_buffer();
+    pc.printf("\r\n Calibrating . . . ");
+    cn0216.calibrate(CN0216::FULL_SCALE_CALIBRATION);
+    pc.printf("done ! ");
+
+    pc.printf("\r\n Calibration successful ");
+    cn0216.calibrate(CN0216::COMPUTE_GRAM_PER_BIT);
+
+    /* Infinite loop */
+    while (1) {
+        wait_ms(1000);
+        {
+            uint32_t data = cn0216.read_u32();
+            float weight    = cn0216.compute_weight(data); //  Convert ADC data to voltage            
+            display_data(data, weight); //  Display data thru UART
+        }
+    }
+
+
+    /* Infinite loop, never returns. */
+}
+