X-NUCLEO-53L0A1 Proximity Sensor Expansion Board Firmware Package

Introduction

This firmware package includes Component Device Drivers and the Board Support Package for STMicroelectronics' X-NUCLEO-53L0A1 Proximity sensor expansion board based on VL53L0X.

Firmware Library

Class X_NUCLEO_53L0A1 is intended to represent the Proximity sensor expansion board with the same name.

The expansion board provides support for the following components:

on-board VL53L0X proximity sensor,
up to two additional VL53L0X Satellites,
on-board 4-digit display

It is intentionally implemented as a singleton because only one X-NUCLEO-VL53L0A1 may be deployed at a time in a HW component stack. In order to get the singleton instance you have to call class method `Instance()`, e.g.:

// Sensors expansion board singleton instance
static X_NUCLEO_53L0A1 *board = X_NUCLEO_53L0A1::Instance(device_i2c, A2, D8, D2);

Example Applications

The library and sample application code were tested against mbed revision 143, dated 26th May 2017.

Diff: x_nucleo_53l0a1.cpp

Revision:: 0:c523920bcc09
Child:: 1:01b8004bc0a7

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/x_nucleo_53l0a1.cpp	Mon Nov 28 11:25:33 2016 +0000
@@ -0,0 +1,127 @@
+/**
+ ******************************************************************************
+ * @file    x_nucleo_53L0A1.cpp
+ * @author  IMG
+ * @version V0.0.1
+ * @date    27-June-2016
+ * @brief   Implementation file for the X_NUCLEO_VL53L0A1 singleton class
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *   1. Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *   2. 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.
+ *   3. Neither the name of STMicroelectronics nor the names of its contributors
+ *      may be used to endorse or promote products derived from this software
+ *      without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, 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.
+ *
+ ******************************************************************************
+ */
+
+
+/* Includes ------------------------------------------------------------------*/
+#include "x_nucleo_53l0a1.h"
+
+/* Static variables ----------------------------------------------------------*/
+X_NUCLEO_53L0A1* X_NUCLEO_53L0A1::_instance = NULL;
+
+X_NUCLEO_53L0A1* X_NUCLEO_53L0A1::Instance(DevI2C *ext_i2c)
+{
+   if(_instance==NULL)
+      _instance=new X_NUCLEO_53L0A1(ext_i2c);
+   else
+      VL53L0X_ErrLog("Failed to create X_NUCLEO_53L0A1 instance\n\r");
+   return _instance;
+}
+
+X_NUCLEO_53L0A1* X_NUCLEO_53L0A1::Instance(DevI2C *ext_i2c, 
+                                             PinName gpio1_centre, 
+                                             PinName gpio1_left, PinName gpio1_right)
+{
+   if(_instance==NULL)
+      //_instance=new X_NUCLEO_53L0A1(ext_i2c);
+      _instance=new X_NUCLEO_53L0A1(ext_i2c, gpio1_centre, gpio1_left, gpio1_right);
+   else
+      VL53L0X_ErrLog("Failed to create X_NUCLEO_53L0A1 instance\n\r");
+   return _instance;
+}
+
+
+int X_NUCLEO_53L0A1::InitBoard()
+{	
+   int status, n_dev=0;
+	
+   sensor_centre->VL53L0X_Off();
+//   sensor_left->VL53L0X_Off();
+//   sensor_right->VL53L0X_Off();
+   status=sensor_centre->InitSensor(NEW_SENSOR_CENTRE_ADDRESS);
+//   status=sensor_centre->RawInitSensor();
+   if(status)
+   {
+      delete sensor_centre;
+      delete xshutdown_centre;
+      sensor_centre=NULL;
+      xshutdown_centre=NULL;
+      printf("Sensor centre not present\n\r");
+   }
+   else
+   {
+      printf("Sensor centre present\n\r");
+      n_dev++;
+   }
+/*   status=sensor_left->InitSensor(NEW_SENSOR_LEFT_ADDRESS);
+   if(status)
+   {
+      delete sensor_left;
+      delete xshutdown_left;
+      sensor_left=NULL;
+      xshutdown_left=NULL;
+      printf("Sensor left not present\n\r");
+   }
+   else
+   {
+      printf("Sensor left present\n\r");
+      n_dev++;
+   }
+*/
+/*   status=sensor_right->InitSensor(NEW_SENSOR_RIGHT_ADDRESS);
+   if(status)
+   {
+      delete sensor_right;
+      delete xshutdown_right;
+      sensor_right=NULL;
+      xshutdown_right=NULL;
+      printf("Sensor right not present\n\r");
+   }
+   else
+   {
+      printf("Sensor right present\n\r");
+      n_dev++;
+   }
+*/
+   if(n_dev==0)
+      return 1;
+   else
+      return 0;
+}
+
+
+
+