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.h

Revision:: 9:367d1f390cb2
Parent:: 7:35ecf3e060c3
Child:: 14:8320b5ff96fa

--- a/x_nucleo_53l0a1.h	Wed Dec 07 14:49:50 2016 +0000
+++ b/x_nucleo_53l0a1.h	Wed Jun 07 12:53:53 2017 +0000
@@ -47,8 +47,7 @@
 #include "DevI2C.h"
 
 /** New device addresses */
-//#define NEW_SENSOR_CENTRE_ADDRESS		0x54
-#define NEW_SENSOR_CENTRE_ADDRESS		0x52
+#define NEW_SENSOR_CENTRE_ADDRESS		0x54
 #define NEW_SENSOR_LEFT_ADDRESS			0x56
 #define NEW_SENSOR_RIGHT_ADDRESS		0x58
 
@@ -66,10 +65,8 @@
     X_NUCLEO_53L0A1(DevI2C *ext_i2c) : dev_i2c(ext_i2c)
     {
         stmpe1600_exp0 = new STMPE1600(*ext_i2c, (0x43 * 2)); // U21
-        stmpe1600_exp0->writeSYS_CTRL (SOFT_RESET);
 
         stmpe1600_exp1 = new STMPE1600(*ext_i2c, (0x42 * 2)); // U19
-        stmpe1600_exp1->writeSYS_CTRL (SOFT_RESET);
 
         display = new Display(*stmpe1600_exp0, *stmpe1600_exp1);
 			
@@ -93,10 +90,8 @@
     X_NUCLEO_53L0A1(DevI2C *ext_i2c, PinName gpio1_centre,
     		 						  PinName gpio1_left, PinName gpio1_right) : dev_i2c(ext_i2c) {
         stmpe1600_exp0 = new STMPE1600(*ext_i2c, (0x43 * 2)); // U21
-        stmpe1600_exp0->writeSYS_CTRL(SOFT_RESET);
 
         stmpe1600_exp1 = new STMPE1600(*ext_i2c, (0x42 * 2)); // U19
-        stmpe1600_exp1->writeSYS_CTRL(SOFT_RESET);
 
         display = new Display(*stmpe1600_exp0, *stmpe1600_exp1);