Experience the synergy of movement, rotation, and magnetic detection with BMX055 and PIC18F57Q43
Your 9-axis movement maestro!
Published Feb 13, 2024
Click board™
9DOF 3 Click
Dev. board
Curiosity Nano with PIC18F57Q43
Compiler
NECTO Studio
MCU
PIC18F57Q43
Empower your devices with the ability to understand and respond to natural human movements, making interactions intuitive and enriching thanks to our advanced 9-axis sensing technology
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Hardware Overview
How does it work?
9DOF 3 Click is based on the BMX055, an integrated 9-axis sensor for detecting movements, rotations, and magnetic heading from Bosch Sensortec. It comprises the full functionality of a triaxial, low-g acceleration sensor, a triaxial angular rate sensor, and a triaxial geomagnetic sensor. The BMX055 senses orientation, tilt motion, acceleration, rotation, shock, vibration, and heading in cell phones, handhelds, computer peripherals, man-machine interfaces, virtual reality features, and game controllers. The BMX055 allows accurate measurements of angular rate, acceleration, and geomagnetic fields in 3 perpendicular axes within one device. The programmable measurement ranges are ±2g, ±4g, ±8g, 16g for accelerometer, ±125°/s, ±250°/s, ±500°/s, ±1000°/s, ±2000°/s for gyroscope and 1300µT (x,y), 2500µT (z) for the magnetometer. The smallest to be distinguished magnitude from the measured
value, or short for resolution, is 0.98mg, 0.004°/s, and 0.3µT for the accelerometer, gyroscope, and magnetometer, respectively. Several power modes are configurable for each sensor intended for low-power applications and power saving. The data from sensors are acquired via a selected digital interface, either SPI or I2C, by reading the addresses directly. Featured IC possesses a 16-bit gyroscope, 12-bit accelerometer, and a full-performance geomagnetic sensor that provides data in 2's complement representation. Measured data compensation and calibration are also included as an on-chip feature and a temperature sensor for reducing temperature fluctuations on sensitive components. 9DOF 3 Click supports two serial digital interface protocols for communication as a peripheral with a host device: SPI and I2C. The active interface is selected by soldering the SMD jumpers to an appropriate
position. The I2C address can also be configured by an SMD jumper when the Click board™ is operated in the I2C mode. The SMD jumpers labeled ADDR SEL are used to set the I2C address of the BMX055. The BMX055 module supports four interrupt pins for each sensor: Accel_INT, Gyro_INT, Mag_INT, and DRDY. The sensor interrupt is selectable via one cross-shaped jumper selection and routed to the Mikrobus INT pin. There is also a header on top of the click with the breakout of all available sensor interrupt pins. 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
PIC18F57Q43 Curiosity Nano evaluation kit is a cutting-edge hardware platform designed to evaluate microcontrollers within the PIC18-Q43 family. Central to its design is the inclusion of the powerful PIC18F57Q43 microcontroller (MCU), offering advanced functionalities and robust performance. Key features of this evaluation kit include a yellow user LED and a responsive
mechanical user switch, providing seamless interaction and testing. The provision for a 32.768kHz crystal footprint ensures precision timing capabilities. With an onboard debugger boasting a green power and status LED, programming and debugging become intuitive and efficient. Further enhancing its utility is the Virtual serial port (CDC) and a debug GPIO channel (DGI
GPIO), offering extensive connectivity options. Powered via USB, this kit boasts an adjustable target voltage feature facilitated by the MIC5353 LDO regulator, ensuring stable operation with an output voltage ranging from 1.8V to 5.1V, with a maximum output current of 500mA, subject to ambient temperature and voltage constraints.
Microcontroller Overview
MCU Card / MCU
Architecture
PIC
MCU Memory (KB)
128
Silicon Vendor
Microchip
Pin count
48
RAM (Bytes)
8196
You complete me!
Accessories
Curiosity Nano Base for Click boards is a versatile hardware extension platform created to streamline the integration between Curiosity Nano kits and extension boards, tailored explicitly for the mikroBUS™-standardized Click boards and Xplained Pro extension boards. This innovative base board (shield) offers seamless connectivity and expansion possibilities, simplifying experimentation and development. Key features include USB power compatibility from the Curiosity Nano kit, alongside an alternative external power input option for enhanced flexibility. The onboard Li-Ion/LiPo charger and management circuit ensure smooth operation for battery-powered applications, simplifying usage and management. Moreover, the base incorporates a fixed 3.3V PSU dedicated to target and mikroBUS™ power rails, alongside a fixed 5.0V boost converter catering to 5V power rails of mikroBUS™ sockets, providing stable power delivery for various connected devices.
Used MCU Pins
mikroBUS™ mapper
Take a closer look
Click board™ Schematic
Step by step
Project assembly
Start by selecting your development board and Click board™. Begin with the Curiosity Nano with PIC18F57Q43 as your development board.
Track your results in real time
Application Output
1. Application Output - In Debug mode, the 'Application Output' window enables real-time data monitoring, offering direct insight into execution results. Ensure proper data display by configuring the environment correctly using the provided tutorial.
2. UART Terminal - Use the UART Terminal to monitor data transmission via a USB to UART converter, allowing direct communication between the Click board™ and your development system. Configure the baud rate and other serial settings according to your project's requirements to ensure proper functionality. For step-by-step setup instructions, refer to the provided tutorial.
3. Plot Output - The Plot feature offers a powerful way to visualize real-time sensor data, enabling trend analysis, debugging, and comparison of multiple data points. To set it up correctly, follow the provided tutorial, which includes a step-by-step example of using the Plot feature to display Click board™ readings. To use the Plot feature in your code, use the function: plot(*insert_graph_name*, variable_name);. This is a general format, and it is up to the user to replace 'insert_graph_name' with the actual graph name and 'variable_name' with the parameter to be displayed.
Software Support
Library Description
This library contains API for 9DOF 3 Click driver.
Key functions:
c9dof3_check_communication- This function check device ID for accelerometer, gyroscope and magnetometerc9dof3_get_data- This function read Accel, Gyro and Mag X-axis, Y-axis data and Z-axis datac9dof3_generic_read- This function reads data from the desired register
Open Source
Code example
The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.
/*!
* \file
* \brief 9Dof3 Click example
*
* # Description
* This click introduces a small-scale absolute orientation sensor in the class of low-noise
* 9-axis measurement units. It comprises the full functionality of a triaxial, low-g acceleration
* sensor, a triaxial angular rate sensor and a triaxial geomagnetic sensor. All three sensor
* components can be operated and addressed independently from each other. 9DOF 3 Click offers
* both SPI and I2C digital interfaces
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initialization driver enables - I2C or SPI, check communication,
* set default configuration for accelerometer, gyroscope and magnetometer, also write log.
*
* ## Application Task
* This is an example which demonstrates the use of 9DOF 3 Click board.
* Measures and displays Accel, Gyroscope and Magnetometer values for X-axis, Y-axis and Z-axis.
* Results are being sent to the Usart Terminal where you can track their changes.
* All data logs write on USB uart changes for every 1 sec.
*
* \author MikroE Team
*
*/
// ------------------------------------------------------------------- INCLUDES
#include "board.h"
#include "log.h"
#include "c9dof3.h"
// ------------------------------------------------------------------ VARIABLES
static c9dof3_t c9dof3;
static log_t logger;
c9dof3_accel_t accel_data;
c9dof3_gyro_t gyro_data;
c9dof3_mag_t mag_data;
// ------------------------------------------------------ APPLICATION FUNCTIONS
void application_init ( void )
{
log_cfg_t log_cfg;
c9dof3_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.
c9dof3_cfg_setup( &cfg );
C9DOF3_MAP_MIKROBUS( cfg, MIKROBUS_1 );
c9dof3_init( &c9dof3, &cfg );
Delay_ms ( 100 );
if ( c9dof3_check_communication( &c9dof3 ) == ( C9DOF3_ACC_COMM_SUCCESS |
C9DOF3_GYRO_COMM_SUCCESS |
C9DOF3_MAG_COMM_SUCCESS ) )
{
log_printf( &logger, " Communication OK \r\n" );
}
else
{
log_printf( &logger, " Communication ERROR \r\n" );
log_printf( &logger, " Reset the device \r\n" );
log_printf( &logger, "-------------------------\r\n" );
for ( ; ; );
}
log_printf( &logger, "-------------------------\r\n" );
c9dof3_default_cfg( &c9dof3 );
Delay_ms( 100 );
}
void application_task ( void )
{
c9dof3_get_data ( &c9dof3, &accel_data, &gyro_data, &mag_data );
log_printf( &logger, " Accel X: %d | Gyro X: %d | Mag X: %d\r\n", accel_data.x, gyro_data.x, mag_data.x );
log_printf( &logger, " Accel Y: %d | Gyro Y: %d | Mag Y: %d\r\n", accel_data.y, gyro_data.y, mag_data.y );
log_printf( &logger, " Accel Z: %d | Gyro Z: %d | Mag Z: %d\r\n", accel_data.z, gyro_data.z, mag_data.z );
log_printf( &logger, "------------------------------------------\r\n" );
Delay_ms( 1000 );
}
void main ( void )
{
application_init( );
for ( ; ; )
{
application_task( );
}
}
// ------------------------------------------------------------------------ END
Additional Support
Resources
Category:Motion
