Cordio BLE-X-NUCLEO-IDB0XA1

BLE_API wrapper Library for X-NUCLEO-IDB05A1 BlueNRG (Bluetooth Low Energy) Expansion Board. It uses ARM Cordio stack instead of the ST BlueNRG stack.

Introduction

This firmware package implements the port of BLE_API to STMicroelectronics' X-NUCLEO-IDB05A1 Bluetooth Low Energy Nucleo Expansion Board.

Arduino Connector Compatibility Warning

X-NUCLEO-IDB05A1 is Arduino compatible with an exception: instead of using pin D13 for the SPI clock, pin D3 is used. The default configuration for this library is having the SPI clock on pin D3.

To be fully Arduino compatible, X-NUCLEO-IDB05A1 needs a small HW patch.

For X-NUCLEO-IDB05A1 this patch consists in removing zero resistor R4 and instead soldering zero resistor R6.

In case you patch your board, then you also have to configure this library to use pin D13 to drive the SPI clock. To this aim you need to compile this driver with macro BLUENRG_PIN_SPI_SCK=D13 defined.

If you use pin D13 for the SPI clock, please be aware that on STM32 Nucleo boards you may not drive the LED, otherwise you will get a conflict: the LED on STM32 Nucleo boards is connected to pin D13.

Referring to the current list of tested platforms (see X-NUCLEO-IDB05A1 page), the patch is required by ST-Nucleo-F103RB; ST-Nucleo-F302R8; ST-Nucleo-F411RE; ST-Nucleo-F446RE; and FRDM-K64F.

Driver configuration

In order to use the BlueNRG-MS module together with other targets, you need to set the macros defined in file bluenrg_targets.h. Please, update the mbed_lib.json to include the list of extra macros that configure the driver for your target.

Target Configuration

To use that library, the target requires some extra configuration in the application mbed_app.json. In the target_overides section:

• BLE feature has to be enabled for the target using the BlueNRG module

"target.features_add": ["BLE"]

• Extra labels have to be defined to include the cordio stack and this library:

"target.extra_labels_add": ["CORDIO", "CORDIO_BLUENRG"]

As an example, the target overide section for the NUCLEO_F401RE would be:

        "NUCLEO_F401RE": {
            "target.features_add": ["BLE"],
            "target.extra_labels_add": ["CORDIO", "CORDIO_BLUENRG"]
        }