Achieve accurate and stable inertial movement measurements with ICM-45605 and PIC18F2455
Understand the device's movement in three-dimensional space
Published Jan 05, 2024
Click board™
6DOF IMU 16 Click
Dev Board
EasyPIC v8
Compiler
NECTO Studio
MCU
PIC18F2455
Unlock advanced motion sensing to precisely track and interpret your device's movement in three-dimensional space for applications ranging from virtual reality to wearables and IoT devices
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Hardware Overview
How does it work?
6DOF IMU 16 Click is based on the ICM-45605, an ultra-high-performance 6-axis MEMS IMU with the world's first BalancedGyro™ technology and the lowest power consumption from TDK InvenSense. The sensor combines a 3‑axis gyroscope and a 3‑axis accelerometer in a compact package. Thanks to the BalancedGyro™ technology, the gyroscope MEMS architecture, a supreme vibration rejection and temperature stability performance is achieved. It has a digital-output gyroscope angular rate with a programmable full-scale range of ±15.625, ±31.25, ±62.5, ±125, ±250, ±500, ±1000, and ±2000 degrees/sec. The accelerometer also has a digital output with a programmable full-scale range of ±2g, ±4g, ±8g, and ±16g. The ICM-45605's on-chip digital motion processor enables advanced motion algorithms and machine learning capability.
The sensors have a self-test, low noise power mode support, good sensitivity, and more. The ICM-45605 also includes the APEX motion features such as pedometer, tilt detection, raise to wake/sleep, tap detection, wake on motion, and more. In addition, there is also a FIFO buffer of up to 8KB, enabling the application MCU to read the data in bursts. 6DOF IMU 16 Click can use a standard 4-wire SPI serial interface to communicate with the host MCU supporting clock frequency of up to 24MHz. It can also use a standard 2-wire I2C supporting a maximum bus speed of 1MHz. The I2C address can be selected over the ADDR SEL jumper. The communication selection can be made over the COMM SEL jumpers. You can also choose between a single or dual interface over the Interface jumper. This allows
you to use an I2C interface as a host while using the SPI. The APEX hardware will interrupt the host MCU over two interrupt pins (I1 and I2) if an interrupt event occurs, such as tilt detection, tap, or whatever events are pre-programmed to those pins. At the bottom of the board, two LP CUT low-power jumpers allow you to use 6DOF IMU 16 Click in a true low-power mode or with a battery-powered device, such as our Clicker 2 series of development boards. 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
EasyPIC v8 is a development board specially designed for the needs of rapid development of embedded applications. It supports many high pin count 8-bit PIC microcontrollers from Microchip, regardless of their number of pins, and a broad set of unique functions, such as the first-ever embedded debugger/programmer. The development board is well organized and designed so that the end-user has all the necessary elements, such as switches, buttons, indicators, connectors, and others, in one place. Thanks to innovative manufacturing technology, EasyPIC v8 provides a fluid and immersive working experience, allowing access anywhere and under any
circumstances at any time. Each part of the EasyPIC v8 development board contains the components necessary for the most efficient operation of the same board. In addition to the advanced integrated CODEGRIP programmer/debugger module, which offers many valuable programming/debugging options and seamless integration with the Mikroe software environment, the board also includes a clean and regulated power supply module for the development board. It can use a wide range of external power sources, including a battery, an external 12V power supply, and a power source via the USB Type-C (USB-C) connector.
Communication options such as USB-UART, USB DEVICE, and CAN are also included, including the well-established mikroBUS™ standard, two display options (graphical and character-based LCD), and several different DIP sockets. These sockets cover a wide range of 8-bit PIC MCUs, from the smallest PIC MCU devices with only eight up to forty pins. EasyPIC v8 is an integral part of the Mikroe ecosystem for rapid development. Natively supported by Mikroe software tools, it covers many aspects of prototyping and development thanks to a considerable number of different Click boards™ (over a thousand boards), the number of which is growing every day.
Microcontroller Overview
MCU Card / MCU
Architecture
PIC
MCU Memory (KB)
24
Silicon Vendor
Microchip
Pin count
28
RAM (Bytes)
2048
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 EasyPIC v8 as your development board.
Track your results in real time
Application Output via UART Mode
1. Once the code example is loaded, pressing the "FLASH" button initiates the build process, and programs it on the created setup.
2. After the programming is completed, click on the Tools icon in the upper-right panel, and select the UART Terminal.
3. After opening the UART Terminal tab, first check the baud rate setting in the Options menu (default is 115200). If this parameter is correct, activate the terminal by clicking the "CONNECT" button.
4. Now terminal status changes from Disconnected to Connected in green, and the data is displayed in the Received data field.
Software Support
Library Description
This library contains API for 6DOF IMU 16 Click driver.
Key functions:
c6dofimu16_sw_reset- This function performs the device software reset.c6dofimu16_get_gyro_data- This function reads the angular rate of X, Y, and Z axis in degrees per second (mdps).c6dofimu16_get_accel_data- This function reads the accelerometer of X, Y, and Z axis relative to standard gravity (mg).
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 main.c
* @brief 6DOF IMU 16 Click example
*
* # Description
* This example demonstrates the use of 6DOF IMU 16 click board by reading and displaying
* the accelerometer and gyroscope data (X, Y, and Z axis).
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initializes the driver performs the click default configuration,
* and checks communication by reading device ID.
*
* ## Application Task
* Reading the accelerometer and gyroscope measurements, results are displayed on the USB UART every second.
*
* @author Stefan Ilic
*
*/
#include "board.h"
#include "log.h"
#include "c6dofimu16.h"
static c6dofimu16_t c6dofimu16;
static log_t logger;
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
c6dofimu16_cfg_t c6dofimu16_cfg; /**< Click config object. */
/**
* 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.
c6dofimu16_cfg_setup( &c6dofimu16_cfg );
C6DOFIMU16_MAP_MIKROBUS( c6dofimu16_cfg, MIKROBUS_1 );
err_t init_flag = c6dofimu16_init( &c6dofimu16, &c6dofimu16_cfg );
if ( ( I2C_MASTER_ERROR == init_flag ) || ( SPI_MASTER_ERROR == init_flag ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( C6DOFIMU16_ERROR == c6dofimu16_default_cfg ( &c6dofimu16 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
uint8_t dev_id = 0;
c6dofimu16_reg_read( &c6dofimu16, C6DOFIMU16_REG_WHO_AM_I, &dev_id );
if ( C6DOFIMU16_DEVICE_ID != dev_id )
{
log_error( &logger, " Communication error " );
for ( ; ; );
}
log_printf( &logger, " Device ID: 0x%.2X \r\n", ( uint16_t ) dev_id );
log_info( &logger, " Application Task " );
}
void application_task ( void )
{
c6dofimu16_axis_t accel_data;
c6dofimu16_axis_t gyro_data;
c6dofimu16_get_accel_data( &c6dofimu16, &accel_data );
c6dofimu16_get_gyro_data( &c6dofimu16, &gyro_data );
log_printf( &logger, " Accel data | Gyro data \r\n" );
log_printf( &logger, " X: %.2f g | %.2f dps \r\n", accel_data.x_data, gyro_data.x_data );
log_printf( &logger, " Y: %.2f g | %.2f dps \r\n", accel_data.y_data, gyro_data.y_data );
log_printf( &logger, " Z: %.2f g | %.2f dps \r\n", accel_data.z_data, gyro_data.z_data );
Delay_ms( 1000 );
}
int main ( void )
{
application_init( );
for ( ; ; )
{
application_task( );
}
return 0;
}
// ------------------------------------------------------------------------ END
