Revolutionize stability and balance control with KMX62 and STM32G474RE
Beyond 3D
Published Nov 08, 2024
Click board™
6DOF IMU 10 Click
Dev Board
Nucleo 64 with STM32G474RE MCU
Compiler
NECTO Studio
MCU
STM32G474RE
Elevate your engineering project with our state-of-the-art movement and rotation detection capabilities
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Hardware Overview
How does it work?
6DOF IMU 10 Click is based on the KMX62-1031, a 6 Degrees-of-Freedom inertial sensor from Rohm Semiconductor. It is based on the principle of a differential capacitance arising from accelerationinduced motion of the sense element, which utilizes common mode cancellation to decrease errors from process variation, temperature, and environmental stress. Capacitance changes are amplified and converted into digital signals which are processed by a dedicated digital signal processing unit. The digital signal processor applies filtering, bias, and sensitivity adjustments, as well as temperature compensation. Magnetic sensing is based on the principle of magnetic impedance. The magnetic sensor detects very small magnetic fields by passing an electric pulse through a special electron spin aligned amorphous wire. Due to the high Curie temperature of the wire, the sensor’s thermal performance shows excellent stability.
Noise performance is excellent with bias stability over temperature. Bias errors resulting from assembly can be trimmed digitally by the user. These sensors can accept supply voltages between 1.7V and 3.6V, and digital communication voltages between 1.2V and 3.6V. The Kionix KMX62 digital sensor can communicate on the I2C digital serial interface bus. This flexibility allows for easy system integration by eliminating analog-to-digital converter requirements and by providing direct communication with system processors. The I2C interface is compliant with high-speed mode, fast mode, and standard mode I2C protocols. As previously mentioned, the KMX62 can communicate on an I2C bus. I2C is primarily used for synchronous serial communication between a Master device and one or more Slave devices. The system Master provides the serial clock signal and addresses Slave devices on the bus. The KMX62 always operates as a Slave device
during standard Master-Slave I2C operation. I2C is a two-wire serial interface that contains a Serial Clock (SCL) line and a Serial Data (SDA) line. SCL is a serial clock that is provided by the Master, but can be held LOW by any Slave device, putting the Master into a wait condition. SDA is a bi-directional line used to transmit and receive data to and from the interface. Data is transmitted MSB (Most Significant Bit) first in 8-bit per byte format, and the number of bytes transmitted per transfer is unlimited. The I2C bus is considered free when both lines are HIGH. This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. Also, it 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 STM32G474R 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-M4
MCU Memory (KB)
512
Silicon Vendor
STMicroelectronics
Pin count
64
RAM (Bytes)
128k
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 STM32G474RE 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 6DOF IMU 10 Click driver.
Key functions:
c6dofimu10_get_accel_axis- This function gets accelerometer axis datac6dofimu10_get_mag_axis- This function gets magnetometer axis data.c6dofimu10_get_temperature- This function gets temperature data.
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 c6DofImu10 Click example
*
* # Description
* This app reads the accelerometer and magnetometer axis data.
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initializes device and runs a communication test that reads
* device id (registry Who_I_AM).
*
* ## Application Task
* Reads the accelerometer and magnetometer axis data.
* And reads temperature values. All data logs on the USBUART.
*
* \author MikroE Team
*
*/
// ------------------------------------------------------------------- INCLUDES
#include "board.h"
#include "log.h"
#include "c6dofimu10.h"
// ------------------------------------------------------------------ VARIABLES
static c6dofimu10_t c6dofimu10;
static log_t logger;
// ------------------------------------------------------- ADDITIONAL FUNCTIONS
void app_display_axis_data ( c6dofimu10_axis_t *axis )
{
log_printf( &logger, "* X: %d \r\n", axis->x );
log_printf( &logger, "* Y: %d \r\n", axis->y );
log_printf( &logger, "* Z: %d \r\n", axis->z );
log_printf( &logger, "------------------------\r\n" );
}
void app_display_temp_data ( float temp )
{
log_printf( &logger, "* Temperature: %.2f C\r\n", temp );
log_printf( &logger, "------------------------\r\n" );
}
// ------------------------------------------------------ APPLICATION FUNCTIONS
void application_init ( void )
{
log_cfg_t log_cfg;
c6dofimu10_cfg_t cfg;
uint8_t com_test;
/**
* 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.
c6dofimu10_cfg_setup( &cfg );
c6DOFIMU10_MAP_MIKROBUS( cfg, MIKROBUS_1 );
c6dofimu10_init( &c6dofimu10, &cfg );
// TEST COMMUNICATION
com_test = c6dofimu10_communication_test( &c6dofimu10 );
if ( com_test != C6DOFIMU10_DEVICE_OK )
{
log_printf( &logger, "-- Device communication ERROR --\r\n" );
for( ; ; );
}
log_printf( &logger, "-- Device communication OK --\r\n" );
Delay_ms( 2000 );
c6dofimu10_default_cfg ( &c6dofimu10 );
log_printf( &logger, "-- Device configuration --\r\n" );
Delay_ms( 500 );
}
void application_task ( void )
{
c6dofimu10_axis_t accel_axis;
c6dofimu10_axis_t mag_axis;
float temperature;
c6dofimu10_get_accel_axis ( &c6dofimu10, &accel_axis );
c6dofimu10_get_mag_axis ( &c6dofimu10, &mag_axis );
temperature = c6dofimu10_get_temperature( &c6dofimu10, C6DOFIMU10_TEMP_FORMAT_CELSIUS );
log_printf( &logger, "-- Accelerometer axis --\r\n" );
app_display_axis_data( &accel_axis );
log_printf( &logger, "-- Magnetometer axis --\r\n" );
app_display_axis_data( &mag_axis );
log_printf( &logger, "-- Temperature data --\r\n" );
app_display_temp_data( temperature );
log_printf( &logger, "***************************************************************************************\r\n" );
Delay_ms( 1000 );
}
void main ( void )
{
application_init( );
for ( ; ; )
{
application_task( );
}
}
// ------------------------------------------------------------------------ END
