Unleash the full potential of connectivity with NINA-B1 and STM32F091RC
Embrace wireless freedom with Bluetooth
Published Feb 26, 2024
Click board™
BLE 3 Click
Dev Board
Nucleo-64 with STM32F091RC MCU
Compiler
NECTO Studio
MCU
STM32F091RC
Take your smart solution to the next level. Integrate Bluetooth Low Energy (BLE) and soar!
A
A
Hardware Overview
How does it work?
BLE 3 Click is based on the NINA-B1112-04B-04B, an open CPU stand-alone Bluetooth module from u-blox. Under the metal hood is an nRF52832, a 32-bit ARM Coretx-M4 microcontroller with FPU from Nordic Semiconductor that runs on 64MHz. It comes with 64KB RAM and 512KB flash memory and provides a rich peripheral GPIO pinout that can be used over two 4-pin headers on the sides of the module. Over those headers, the NINA-B1112-04B module exposes one general-purpose IO, 4 GPIO with analog capabilities, and two NFC pins that can be used as GPIO. Those can be used for some sensors, as the ADC on this module can sample up to 200KHz using different inputs as sample triggers in 8/10/12-bit resolutions. It is even equipped with one analog comparator. The BLE 3 module comes with an RTC, which can operate in standby mode and, in general, can be used to generate precisely timed BLE advertising events (broadcasting packets to every device around). The RTC can wake the BLE 3 Click from Sleep mode and detect the NFC field and other means. The NINA-B1112-04B module is preprogrammed with a unique 48-bit Bluetooth device address. If lost or corrupted, this same address can still be recovered from the QR code printed on the module. The module is delivered with u-connectXpress
software that supports u-blox Bluetooth low energy Serial Port Service, GATT client and server, beacons, NFC, and simultaneous peripheral and central roles. This software allows configuration over an AT command set. As mentioned, the NINA-B1112-04B includes a Near Field Communication interface capable of operating as a 13.56MHz NFC tag at a bit rate of 106Kbps. As an NFC tag, data can be read from or written to the module using an NFC reader, but it can not read other tags or initiate NFC communication. Using this feature to wake the module from deep sleep is convenient. The BLE 3 Click is not equipped with the NFC antenna; however, an external NFC antenna can be connected to the IO_28 and IO_29 pins. The nRF52832 in the NINA-B1112-04B module can be used with pre-flashed software or as an open CPU module. If so, the user can run a custom application on this module, such as Arm Mbed OS. The BLE 3 Click features the 10-pin JTAG header for this purpose. In addition, you can configure NINA-B1112-04B through u-blox S-Center toolbox software using AT commands. This software is available free of charge and can be downloaded from the u-blox website. BLE 3 Click communicates with the host MCU through the UART, SPI, and I2C interfaces. On this Click
board™, there is a CS/RTS jumper in the RTS position, thus preset for the UART interface as the interface where AT commands can control this module. Besides the standard UART RX and TX pins, you can use UART RTS and CTS hardware control flow pins (RTS labeled as CS on mikroBUS™ socket). The UART interface supports baud rates up to 1Mbps. If the choice of communication is the 4-Wire SPI Serial interface, then the jumper should be positioned on CS. The SPI interface supports serial clock frequencies up to 8MHz. The standard 2-Wire I2C interface could also be used for communication with the host MCU. It supports standard (100Kbps), fast (400Kbps), and 250Kbps transmission speeds. It is worth knowing that NINA-B1112-04B supports clock stretching, which temporarily pauses any I2C communication. The last pin is the RST pin which can be used to reset the module. This Click board™ can only be operated with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development.
Features overview
Development board
Nucleo-64 with STM32F091RC MCU offers a cost-effective and adaptable platform for developers to explore new ideas and prototype their designs. This board harnesses the versatility of the STM32 microcontroller, enabling users to select the optimal balance of performance and power consumption for their projects. It accommodates the STM32 microcontroller in the LQFP64 package and includes essential components such as a user LED, which doubles as an ARDUINO® signal, alongside user and reset push-buttons, and a 32.768kHz crystal oscillator for precise timing operations. Designed with expansion and flexibility in mind, the Nucleo-64 board features an ARDUINO® Uno V3 expansion connector and ST morpho extension pin
headers, granting complete access to the STM32's I/Os for comprehensive project integration. Power supply options are adaptable, supporting ST-LINK USB VBUS or external power sources, ensuring adaptability in various development environments. The board also has an on-board ST-LINK debugger/programmer with USB re-enumeration capability, simplifying the programming and debugging process. Moreover, the board is designed to simplify advanced development with its external SMPS for efficient Vcore logic supply, support for USB Device full speed or USB SNK/UFP full speed, and built-in cryptographic features, enhancing both the power efficiency and security of projects. Additional connectivity is
provided through dedicated connectors for external SMPS experimentation, a USB connector for the ST-LINK, and a MIPI® debug connector, expanding the possibilities for hardware interfacing and experimentation. Developers will find extensive support through comprehensive free software libraries and examples, courtesy of the STM32Cube MCU Package. This, combined with compatibility with a wide array of Integrated Development Environments (IDEs), including IAR Embedded Workbench®, MDK-ARM, and STM32CubeIDE, ensures a smooth and efficient development experience, allowing users to fully leverage the capabilities of the Nucleo-64 board in their projects.
Microcontroller Overview
MCU Card / MCU
Architecture
ARM Cortex-M0
MCU Memory (KB)
256
Silicon Vendor
STMicroelectronics
Pin count
64
RAM (Bytes)
32768
You complete me!
Accessories
Click Shield for Nucleo-64 comes equipped with two proprietary mikroBUS™ sockets, allowing all the Click board™ devices to be interfaced with the STM32 Nucleo-64 board with no effort. This way, Mikroe allows its users to add any functionality from our ever-growing range of Click boards™, such as WiFi, GSM, GPS, Bluetooth, ZigBee, environmental sensors, LEDs, speech recognition, motor control, movement sensors, and many more. More than 1537 Click boards™, which can be stacked and integrated, are at your disposal. The STM32 Nucleo-64 boards are based on the microcontrollers in 64-pin packages, a 32-bit MCU with an ARM Cortex M4 processor operating at 84MHz, 512Kb Flash, and 96KB SRAM, divided into two regions where the top section represents the ST-Link/V2 debugger and programmer while the bottom section of the board is an actual development board. These boards are controlled and powered conveniently through a USB connection to program and efficiently debug the Nucleo-64 board out of the box, with an additional USB cable connected to the USB mini port on the board. Most of the STM32 microcontroller pins are brought to the IO pins on the left and right edge of the board, which are then connected to two existing mikroBUS™ sockets. This Click Shield also has several switches that perform functions such as selecting the logic levels of analog signals on mikroBUS™ sockets and selecting logic voltage levels of the mikroBUS™ sockets themselves. Besides, the user is offered the possibility of using any Click board™ with the help of existing bidirectional level-shifting voltage translators, regardless of whether the Click board™ operates at a 3.3V or 5V logic voltage level. Once you connect the STM32 Nucleo-64 board with our Click Shield for Nucleo-64, you can access hundreds of Click boards™, working with 3.3V or 5V logic voltage levels.
Used MCU Pins
mikroBUS™ mapper
Take a closer look
Schematic
Step by step
Project assembly
Start by selecting your development board and Click board™. Begin with the Nucleo-64 with STM32F091RC MCU as your development board.
Track your results in real time
Application Output via Debug Mode
1. Once the code example is loaded, pressing the "DEBUG" button initiates the build process, programs it on the created setup, and enters Debug mode.
2. After the programming is completed, a header with buttons for various actions within the IDE becomes visible. Clicking the green "PLAY" button starts reading the results achieved with the Click board™. The achieved results are displayed in the Application Output tab.
Software Support
Library Description
This library contains API for BLE 3 Click driver.
Key functions:
ble3_generic_read- Generic read functionble3_generic_write- Generic write function
Open Source
Code example
This example can be found in NECTO Studio. Feel free to download the code, or you can copy the code below.
/*!
* \file
* \brief Ble3 Click example
*
* # Description
* This example reads and processes data from BLE 3 clicks.
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initializes driver and wake-up module.
*
* ## Application Task
* Reads the received data.
*
* ## Additional Function
* - ble3_process ( ) - Logs all received messages on UART, and sends the certain message back to the connected device.
*
*
* \author MikroE Team
*
*/
// ------------------------------------------------------------------- INCLUDES
#include "board.h"
#include "log.h"
#include "ble3.h"
#include "string.h"
#define PROCESS_COUNTER 10
#define PROCESS_RX_BUFFER_SIZE 100
#define PROCESS_PARSER_BUFFER_SIZE 100
// ------------------------------------------------------------------ VARIABLES
static char AT[ ] = "AT\r";
static char ATE1[ ] = "ATE1\r";
static char AT_UBTLN[ ] = "AT+UBTLN=\"BLE 3 Click\"\r";
static char AT_UBTDM[ ] = "AT+UBTDM=3\r";
static char AT_UBTCM[ ] = "AT+UBTCM=2\r";
static char AT_UBTPM[ ] = "AT+UBTPM=2\r";
static char ATO1[ ] = "ATO1\r";
static ble3_t ble3;
static log_t logger;
static uint8_t data_mode = 0;
static char current_parser_buf[ PROCESS_PARSER_BUFFER_SIZE ];
// ------------------------------------------------------- ADDITIONAL FUNCTIONS
static int8_t ble3_process ( void )
{
int32_t rsp_size;
uint16_t rsp_cnt = 0;
char uart_rx_buffer[ PROCESS_RX_BUFFER_SIZE ] = { 0 };
uint8_t check_buf_cnt;
uint8_t process_cnt = PROCESS_COUNTER;
// Clear current buffer
memset( current_parser_buf, 0, PROCESS_PARSER_BUFFER_SIZE );
while( process_cnt != 0 )
{
rsp_size = ble3_generic_read( &ble3, uart_rx_buffer, PROCESS_RX_BUFFER_SIZE );
if ( rsp_size > 0 )
{
// Validation of the received data
for ( check_buf_cnt = 0; check_buf_cnt < rsp_size; check_buf_cnt++ )
{
if ( uart_rx_buffer[ check_buf_cnt ] == 0 )
{
uart_rx_buffer[ check_buf_cnt ] = 13;
}
}
// Storages data in current buffer
rsp_cnt += rsp_size;
if ( rsp_cnt < PROCESS_PARSER_BUFFER_SIZE )
{
strncat( current_parser_buf, uart_rx_buffer, rsp_size );
}
// Clear RX buffer
memset( uart_rx_buffer, 0, PROCESS_RX_BUFFER_SIZE );
if (strstr(current_parser_buf, "ERROR")) {
return -1;
}
if (strstr(current_parser_buf, "OK")) {
log_printf( &logger, "%s", current_parser_buf );
return 1;
}
if ( data_mode == 1) {
log_printf( &logger, "%s", current_parser_buf );
ble3_generic_write( &ble3, "Hello", 5 );
Delay_ms( 2000 );
ble3_generic_write( &ble3, "MikroE", 6 );
}
}
else
{
process_cnt--;
// Process delay
Delay_ms( 100 );
}
}
return 0;
}
// ------------------------------------------------------ APPLICATION FUNCTIONS
void application_init ( void )
{
log_cfg_t log_cfg;
ble3_cfg_t cfg;
/**
* Logger initialization.
* Default baud rate: 115200
* Default log level: LOG_LEVEL_DEBUG
* @note If USB_UART_RX and USB_UART_TX
* are defined as HAL_PIN_NC, you will
* need to define them manually for log to work.
* See @b LOG_MAP_USB_UART macro definition for detailed explanation.
*/
LOG_MAP_USB_UART( log_cfg );
log_init( &logger, &log_cfg );
log_info( &logger, "---- Application Init ----" );
// Click initialization.
ble3_cfg_setup( &cfg );
BLE3_MAP_MIKROBUS( cfg, MIKROBUS_1 );
ble3_init( &ble3, &cfg );
log_printf( &logger, "Configuring the module...\n" );
Delay_1sec( );
do {
ble3_generic_write( &ble3, AT, (uint16_t) strlen( AT ) );
Delay_100ms( );
}
while(ble3_process( ) != 1);
do {
ble3_generic_write( &ble3, ATE1, (uint16_t) strlen( ATE1 ) );
Delay_100ms( );
}
while(ble3_process( ) != 1);
do {
ble3_generic_write( &ble3, AT_UBTLN, (uint16_t) strlen( AT_UBTLN ) );
Delay_100ms( );
}
while(ble3_process( ) != 1);
do {
ble3_generic_write( &ble3, AT_UBTDM, (uint16_t) strlen( AT_UBTDM ) );
Delay_100ms( );
}
while(ble3_process( ) != 1);
do {
ble3_generic_write( &ble3, AT_UBTCM, (uint16_t) strlen( AT_UBTCM ) );
Delay_100ms( );
}
while(ble3_process( ) != 1);
do {
ble3_generic_write( &ble3, AT_UBTPM, (uint16_t) strlen( AT_UBTPM ) );
Delay_100ms( );
}
while(ble3_process( ) != 1);
do {
ble3_generic_write( &ble3, ATO1, (uint16_t) strlen( ATO1 ) );
Delay_100ms( );
}
while(ble3_process( ) != 1);
data_mode = 1;
log_printf( &logger, "The module has been configured.\n" );
}
void application_task ( void )
{
ble3_process( );
}
void main ( void )
{
application_init( );
for ( ; ; )
{
application_task( );
}
}
// ------------------------------------------------------------------------ END
