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: Components/VL53L0X/vl53l0x_class.h

Revision:: 15:44e6c9013bff
Parent:: 14:8320b5ff96fa
Child:: 20:cb95ef8a3508

--- a/Components/VL53L0X/vl53l0x_class.h	Mon Aug 07 14:30:21 2017 +0000
+++ b/Components/VL53L0X/vl53l0x_class.h	Tue Aug 08 14:41:03 2017 +0000
@@ -301,7 +301,7 @@
      * @param[in] &pin_gpio1 pin Mbed InterruptIn PinName to be used as component GPIO_1 INT
      * @param[in] dev_addr device address, 0x29 by default
      */
-    VL53L0X(DevI2C &i2c, DigitalOut &pin, PinName pin_gpio1, uint8_t dev_addr = DEFAULT_DEVICE_ADDRESS) : dev_i2c(i2c),
+    VL53L0X(DevI2C &i2c, DigitalOut &pin, PinName pin_gpio1, uint8_t dev_addr = DEFAULT_DEVICE_ADDRESS) : dev_i2c(&i2c),
         gpio0(&pin)
     {
         _my_device.I2cDevAddr = dev_addr;
@@ -323,7 +323,7 @@
      * @param[in] device address, 0x29 by default
      */
     VL53L0X(DevI2C &i2c, Stmpe1600DigiOut &pin, PinName pin_gpio1,
-            uint8_t dev_addr = DEFAULT_DEVICE_ADDRESS) : dev_i2c(i2c), expgpio0(&pin)
+            uint8_t dev_addr = DEFAULT_DEVICE_ADDRESS) : dev_i2c(&i2c), expgpio0(&pin)
     {
         _my_device.I2cDevAddr = dev_addr;
         _my_device.comms_type = 1; // VL53L0X_COMMS_I2C
@@ -2737,7 +2737,7 @@
     VL53L0X_DeviceInfo_t _device_info;
 
     /* IO Device */
-    DevI2C &dev_i2c;
+    DevI2C *dev_i2c;
     /* Digital out pin */
     DigitalOut *gpio0;
     /* GPIO expander */