Keep your electronics safe and sound with ADuM4154 and STM32F031K6
Unlocking the power of SPI isolators
Published Oct 01, 2024
Click board™
SPI Isolator Click
Dev. board
Nucleo 32 with STM32F031K6 MCU
Compiler
NECTO Studio
MCU
STM32F031K6
This isolator represents a versatile solution for isolating and protecting digital signals, making them an essential component in electronic systems where signal integrity and safety are paramount
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Hardware Overview
How does it work?
SPI Isolator Click is based on the ADuM4154, a 5kV digital isolator optimized for a serial peripheral interface (SPI) from Analog Devices. The click is designed to run on either a 3.3V or 5V power supply. It communicates with the target microcontroller over the SPI interface. The ADuM4154 has four high-speed channels. The first
three channels, CLK, MI/SO, and MO/SI (the slash indicates the connection of the particular input and output channel across the isolator), are optimized for either low propagation delay in the B grade or high noise immunity in the A grade. This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VIO SEL
jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. Also, this Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used as a reference for further development.
Features overview
Development board
Nucleo 32 with STM32F031K6 MCU board provides an affordable and flexible platform for experimenting with STM32 microcontrollers in 32-pin packages. Featuring Arduino™ Nano connectivity, it allows easy expansion with specialized shields, while being mbed-enabled for seamless integration with online resources. The
board includes an on-board ST-LINK/V2-1 debugger/programmer, supporting USB reenumeration with three interfaces: Virtual Com port, mass storage, and debug port. It offers a flexible power supply through either USB VBUS or an external source. Additionally, it includes three LEDs (LD1 for USB communication, LD2 for power,
and LD3 as a user LED) and a reset push button. The STM32 Nucleo-32 board is supported by various Integrated Development Environments (IDEs) such as IAR™, Keil®, and GCC-based IDEs like AC6 SW4STM32, making it a versatile tool for developers.
Microcontroller Overview
MCU Card / MCU
Architecture
ARM Cortex-M0
MCU Memory (KB)
32
Silicon Vendor
STMicroelectronics
Pin count
32
RAM (Bytes)
4096
You complete me!
Accessories
Click Shield for Nucleo-32 is the perfect way to expand your development board's functionalities with STM32 Nucleo-32 pinout. The Click Shield for Nucleo-32 provides two mikroBUS™ sockets to add any functionality from our ever-growing range of Click boards™. We are fully stocked with everything, from sensors and WiFi transceivers to motor control and audio amplifiers. The Click Shield for Nucleo-32 is compatible with the STM32 Nucleo-32 board, providing an affordable and flexible way for users to try out new ideas and quickly create prototypes with any STM32 microcontrollers, choosing from the various combinations of performance, power consumption, and features. The STM32 Nucleo-32 boards do not require any separate probe as they integrate the ST-LINK/V2-1 debugger/programmer and come with the STM32 comprehensive software HAL library and various packaged software examples. This development platform provides users with an effortless and common way to combine the STM32 Nucleo-32 footprint compatible board with their favorite Click boards™ in their upcoming projects.
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 Nucleo 32 with STM32F031K6 MCU 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 SPI Isolator Click driver.
Key functions:
spiisolator_generic_transfer- Generic transfer functionspiisolator_write_byte- Write the byte of data functionspiisolator_read_byte- Read the byte of data function
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 Spiisolator Click example
*
* # Description
* The Click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over SPI interface.
* In this example we have used an 8x8 Click board connected to a SPI Isolator Click board.
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initialization driver enables - SPI, set default configuration, also write log.
*
* ## Application Task
* Controls an 8x8 Click board and displays the steps on UART Terminal.
*
* \author MikroE Team
*
*/
// ------------------------------------------------------------------- INCLUDES
#include "board.h"
#include "log.h"
#include "spiisolator.h"
// ------------------------------------------------------------------ VARIABLES
static spiisolator_t spiisolator;
static log_t logger;
uint8_t demo_string[ 11 ] = { ' ', '-', 'M', 'i', 'k', 'r', 'o', 'E', '-', ' ', 0 };
uint8_t demo_img_on [ 8 ] = { 0x08, 0x1c, 0x36, 0x22, 0x08, 0x1c, 0x36, 0x22 };
uint8_t demo_img_off[ 8 ] = { 0xf7, 0xe3, 0xc9, 0xdd, 0xf7, 0xe3, 0xc9, 0xdd };
char demo_char = 'A';
static const uint8_t ascii_matrix[][ 10 ] = {
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0 }, // space -- 32
{ 0x00, 0x00, 0x0, 0x0, 0x60, 0xfa, 0xfa, 0x60, 0x0, 0x0 }, // ! -- 33
{ 0x00, 0x00, 0x0, 0xc0, 0xe0, 0x0, 0x0, 0xe0, 0xc0, 0x0 }, // " -- 34
{ 0x00, 0x00, 0x28, 0xfe, 0xfe, 0x28, 0xfe, 0xfe, 0x28, 0x0 }, // # -- 35
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0 }, // $ -- 36
{ 0x00, 0x00, 0x62, 0x66, 0xc, 0x18, 0x30, 0x66, 0x46, 0x0 }, // % -- 37
{ 0x00, 0x00, 0xc, 0x5e, 0xf2, 0xba, 0xec, 0x5e, 0x12, 0x0 }, // & -- 38
{ 0x00, 0x00, 0x0, 0x0, 0x20, 0xe0, 0xc0, 0x0, 0x0, 0x0 }, // ' -- 39
{ 0x00, 0x00, 0x0, 0x0, 0x38, 0x7c, 0xc6, 0x82, 0x0, 0x0 }, // ( -- 40
{ 0x00, 0x00, 0x0, 0x0, 0x82, 0xc6, 0x7c, 0x38, 0x0, 0x0 }, // ) -- 41
{ 0x00, 0x00, 0x10, 0x54, 0x7c, 0x38, 0x38, 0x7c, 0x54, 0x10}, // * -- 42
{ 0x00, 0x00, 0x0, 0x10, 0x10, 0x7c, 0x7c, 0x10, 0x10, 0x0 }, // + -- 43
{ 0x00, 0x00, 0x0, 0x0, 0x0, 0x18, 0x1c, 0x0, 0x0, 0x0 }, // , -- 44
{ 0x00, 0x00, 0x0, 0x10, 0x10, 0x10, 0x10, 0x10, 0x10, 0x0 }, // - -- 45
{ 0x00, 0x00, 0x0, 0x0, 0x0, 0x6, 0x6, 0x0, 0x0, 0x0 }, // . -- 46
{ 0x00, 0x00, 0x6, 0xc, 0x18, 0x30, 0x60, 0xc0, 0x80, 0x0 }, // / -- 47
{ 0x00, 0x00, 0x7c, 0xfe, 0x8a, 0x92, 0xa2, 0xfe, 0x7c, 0x00}, // 0 -- 48
{ 0x00, 0x00, 0x0, 0x2, 0x42, 0xfe, 0xfe, 0x2, 0x2, 0x00}, // 1 -- 49
{ 0x00, 0x00, 0x42, 0xc6, 0x8e, 0x9a, 0x92, 0xf6, 0x66, 0x00}, // 2 -- 50
{ 0x00, 0x00, 0x22, 0x63, 0x49, 0x49, 0x49, 0x7F, 0x36, 0x00}, // 3 -- 51
{ 0x00, 0x00, 0x18, 0x38, 0x68, 0xca, 0xfe, 0xfe, 0xa, 0x0 }, // 4 -- 52
{ 0x00, 0x00, 0x0 , 0xf4, 0xf6, 0x92, 0x92, 0x92, 0x9e, 0x8c}, // 5 -- 53
{ 0x00, 0x00, 0x3c, 0x7e, 0xd2, 0x92, 0x92, 0x1e, 0xc, 0x00}, // 6 -- 54
{ 0x00, 0x00, 0x0, 0x0, 0x80, 0x9e, 0xb0, 0xe0, 0xc0, 0x0 }, // 7 -- 55
{ 0x00, 0x00, 0x6c, 0xfe, 0x92, 0x92, 0x92, 0xfe, 0x6c, 0x0 }, // 8 -- 56
{ 0x00, 0x00, 0x60, 0xf2, 0x92, 0x92, 0x96, 0xfc, 0x78, 0x0 }, // 9 -- 57//
{ 0x00, 0x00, 0x0, 0x0, 0x0, 0x66, 0x66, 0x0, 0x0, 0x0 }, // : -- 58
{ 0x00, 0x00, 0x0, 0x0, 0x0, 0x6c, 0x6e, 0x0, 0x0, 0x0 }, // ; -- 59
{ 0x00, 0x00, 0x0, 0x0, 0x10, 0x38, 0x6c, 0xc6, 0x82, 0x0 }, // < -- 60
{ 0x00, 0x00, 0x0, 0x24, 0x24, 0x24, 0x24, 0x24, 0x24, 0x0 }, // = -- 61
{ 0x00, 0x00, 0x0, 0x82, 0xc6, 0x6c, 0x38, 0x10, 0x0, 0x0 }, // > -- 62
{ 0x00, 0x00, 0x40, 0xc0, 0x80, 0x9a, 0xba, 0xe0, 0x40, 0x0 }, // ? -- 63
{ 0x00, 0x00, 0x7c, 0xfe, 0x82, 0xba, 0xaa, 0xf8, 0x78, 0x0 }, // @ -- 64
{ 0x00, 0x00, 0x3e, 0x7e, 0xd0, 0x90, 0xd0, 0x7e, 0x3e, 0x0 }, // A -- 65
{ 0x00, 0x00, 0x82, 0xfe, 0xfe, 0x92, 0x92, 0xfe, 0x6c, 0x0 }, // B -- 66
{ 0x00, 0x00, 0x38, 0x7c, 0xc6, 0x82, 0x82, 0xc6, 0x44, 0x0 }, // C -- 67
{ 0x00, 0x00, 0x82, 0xfe, 0xfe, 0x82, 0xc6, 0x7c, 0x38, 0x0 }, // D -- 68
{ 0x00, 0x00, 0x82, 0xfe, 0xfe, 0x92, 0xba, 0x82, 0xc6, 0x0 }, // E -- 69
{ 0x00, 0x00, 0x82, 0xfe, 0xfe, 0x92, 0xb8, 0x80, 0xc0, 0x0 }, // F -- 70
{ 0x00, 0x00, 0x38, 0x7c, 0xc6, 0x82, 0x8a, 0xce, 0x4e, 0x0 }, // G -- 71
{ 0x00, 0x00, 0xfe, 0xfe, 0x10, 0x10, 0x10, 0xfe, 0xfe, 0x0 }, // H -- 72
{ 0x00, 0x00, 0x0, 0x0, 0x82, 0xfe, 0xfe, 0x82, 0x0, 0x0 }, // I -- 73
{ 0x00, 0x00, 0x0, 0xe, 0x2, 0x82, 0xfe, 0xfc, 0x80, 0x0 }, // J -- 74
{ 0x00, 0x00, 0x82, 0xfe, 0xfe, 0x10, 0x38, 0xee, 0xc6, 0x0 }, // K -- 75
{ 0x00, 0x00, 0x82, 0xfe, 0xfe, 0x82, 0x2, 0x6, 0xe, 0x0 }, // L -- 76
{ 0x00, 0x00, 0xfe, 0xfe, 0x70, 0x38, 0x70, 0xfe, 0xfe, 0x0 }, // M -- 77
{ 0x00, 0x00, 0xfe, 0xfe, 0x60, 0x30, 0x18, 0xfe, 0xfe, 0x0 }, // N -- 78
{ 0x00, 0x00, 0x7c, 0xfe, 0x82, 0x82, 0x82, 0xfe, 0x7c, 0x0 }, // O -- 79
{ 0x00, 0x00, 0x82, 0xfe, 0xfe, 0x92, 0x90, 0xf0, 0x60, 0x0 }, // P -- 80
{ 0x00, 0x00, 0x7c, 0xfe, 0x82, 0x82, 0x87, 0xff, 0x7d, 0x0 }, // Q -- 81
{ 0x00, 0x00, 0x82, 0xfe, 0xfe, 0x90, 0x98, 0xfe, 0x66, 0x0 }, // R -- 82
{ 0x00, 0x00, 0x44, 0xe6, 0xb2, 0x92, 0x9a, 0xce, 0x44, 0x0 }, // S -- 83
{ 0x00, 0x00, 0x0, 0xe0, 0xc2, 0xfe, 0xfe, 0xc2, 0xe0, 0x0 }, // T -- 84
{ 0x00, 0x00, 0xfc, 0xfe, 0x2, 0x2, 0x2, 0xfe, 0xfc, 0x0 }, // U -- 85
{ 0x00, 0x00, 0xf8, 0xfc, 0x6, 0x2, 0x6, 0xfc, 0xf8, 0x0 }, // V -- 86
{ 0x00, 0x00, 0xfc, 0xfe, 0x6, 0x1c, 0x6, 0xfe, 0xfc, 0x0 }, // W -- 87
{ 0x00, 0x00, 0xc6, 0xee, 0x38, 0x10, 0x38, 0xee, 0xc6, 0x0 }, // X -- 88
{ 0x00, 0x00, 0x0, 0xe0, 0xf2, 0x1e, 0x1e, 0xf2, 0xe0, 0x0 }, // Y -- 89
{ 0x00, 0x00, 0xe2, 0xc6, 0x8e, 0x92, 0xb2, 0xe6, 0xce, 0x0 }, // Z -- 90
{ 0x00, 0x00, 0x0, 0x0, 0xfe, 0xfe, 0x82, 0x82, 0x0, 0x0 }, // [ -- 91
{ 0x00, 0x00, 0x80, 0xc0, 0x60, 0x30, 0x18, 0xc, 0x6, 0x0 }, // \ -- 92
{ 0x00, 0x00, 0x0, 0x0, 0x82, 0x82, 0xfe, 0xfe, 0x0, 0x0 }, // ] -- 93
{ 0x00, 0x00, 0x10, 0x30, 0x60, 0xc0, 0x60, 0x30, 0x10, 0x0 }, // ^ -- 94
{ 0x00, 0x00, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1, 0x1 }, // _ -- 95
{ 0x00, 0x00, 0x0, 0x0, 0x80, 0xc0, 0x60, 0x20, 0x0, 0x0 }, // ` -- 96{}
{ 0x00, 0x00, 0x4, 0x2e, 0x2a, 0x2a, 0x3c, 0x1e, 0x2, 0x0 }, // a -- 97
{ 0x00, 0x00, 0x82, 0xfe, 0xfc, 0x22, 0x22, 0x3e, 0x1c, 0x0 }, // b -- 98
{ 0x00, 0x00, 0x1c, 0x3e, 0x22, 0x22, 0x22, 0x36, 0x14, 0x0 }, // c -- 99
{ 0x00, 0x00, 0x1c, 0x3e, 0x22, 0xa2, 0xfc, 0xfe, 0x2, 0x0 }, // d -- 100
{ 0x00, 0x00, 0x1c, 0x3e, 0x2a, 0x2a, 0x2a, 0x3a, 0x18, 0x0 }, // e -- 101
{ 0x00, 0x00, 0x12, 0x7e, 0xfe, 0x92, 0x90, 0xc0, 0x40, 0x0 }, // f -- 102
{ 0x00, 0x00, 0x19, 0x3d, 0x25, 0x25, 0x3f, 0x3e, 0x20, 0x0 }, // g -- 103
{ 0x00, 0x00, 0x82, 0xfe, 0xfe, 0x30, 0x20, 0x3e, 0x1e, 0x0 }, // h -- 104
{ 0x00, 0x00, 0x0, 0x0, 0x22, 0xbe, 0xbe, 0x2, 0x0, 0x0 }, // i -- 105
{ 0x00, 0x00, 0x0, 0x6, 0x7, 0x1, 0x1, 0xbf, 0xbe, 0x0 }, // j -- 106
{ 0x00, 0x00, 0x82, 0xfe, 0xfe, 0x8, 0x1c, 0x36, 0x22, 0x0 }, // k -- 107
{ 0x00, 0x00, 0x0, 0x0, 0x82, 0xfe, 0xfe, 0x2, 0x0, 0x0 }, // l -- 108
{ 0x00, 0x00, 0x3e, 0x3e, 0x30, 0x1e, 0x30, 0x3e, 0x1e, 0x0 }, // m -- 109
{ 0x00, 0x00, 0x20, 0x3e, 0x1e, 0x20, 0x20, 0x3e, 0x1e, 0x0 }, // n -- 110
{ 0x00, 0x00, 0x1c, 0x3e, 0x22, 0x22, 0x22, 0x3e, 0x1c, 0x0 }, // o -- 111
{ 0x00, 0x00, 0x21, 0x3f, 0x1f, 0x25, 0x24, 0x3c, 0x18, 0x0 }, // p -- 112
{ 0x00, 0x00, 0x18, 0x3c, 0x24, 0x25, 0x1f, 0x3f, 0x21, 0x0 }, // q -- 113
{ 0x00, 0x00, 0x22, 0x3e, 0x1e, 0x32, 0x20, 0x30, 0x10, 0x0 }, // r -- 114
{ 0x00, 0x00, 0x12, 0x3a, 0x2a, 0x2a, 0x2a, 0x2e, 0x24, 0x0 }, // s -- 115
{ 0x00, 0x00, 0x20, 0x20, 0xfc, 0xfe, 0x22, 0x26, 0x4, 0x0 }, // t -- 116
{ 0x00, 0x00, 0x3c, 0x3e, 0x2, 0x2, 0x3c, 0x3e, 0x2, 0x0 }, // u -- 117
{ 0x00, 0x00, 0x38, 0x3c, 0x6, 0x3, 0x6, 0x3c, 0x38, 0x0 }, // v -- 118
{ 0x00, 0x00, 0x3c, 0x3e, 0x6, 0x1c, 0x6, 0x3e, 0x3c, 0x0 }, // w -- 119
{ 0x00, 0x00, 0x22, 0x36, 0x1c, 0x8, 0x1c, 0x36, 0x22, 0x0 }, // x -- 120
{ 0x00, 0x00, 0x39, 0x3e, 0x5, 0x5, 0x5, 0x3f, 0x3e, 0x0 }, // y -- 121
{ 0x00, 0x00, 0x0, 0x32, 0x26, 0x2e, 0x3a, 0x32, 0x26, 0x0 }
};
// ------------------------------------------------------- ADDITIONAL FUNCTIONS
void c8x8_display_string ( spiisolator_t *ctx, char *p_array )
{
uint8_t str_word[512];
char wr_chr;
uint8_t cnt;
uint8_t i;
uint8_t global_cnt = 0;
uint8_t char_ascii;
uint8_t position = 0;
uint8_t col = 8;
for ( i = 0; i < strlen( p_array ); i++ )
{
char_ascii = p_array[ i ] - 32;
for ( cnt = 0; cnt < 10; cnt++ )
{
str_word[ global_cnt++ ] = ascii_matrix[ char_ascii ][ cnt ];
}
}
while ( position < ( global_cnt - 8 ) )
{
for ( cnt = position; cnt < position + 8; cnt++ )
{
wr_chr = str_word[ cnt ];
spiisolator_write_cmd( ctx, col, wr_chr );
col--;
}
col = 8;
position++;
Delay_100ms( );
}
}
void c8x8_display_byte ( spiisolator_t *ctx, char tx_byte )
{
uint8_t cnt;
uint8_t char_ascii;
uint8_t position = 8;
char wr_chr;
char_ascii = tx_byte - 32;
for ( cnt = 2; cnt < 10; cnt++ )
{
wr_chr = ascii_matrix[ char_ascii ][ cnt ];
spiisolator_write_cmd( ctx, position, wr_chr );
position--;
}
}
void c8x8_display_image ( spiisolator_t *ctx, uint8_t *p_image )
{
uint8_t cnt;
uint8_t line;
uint8_t position = 8;
for ( cnt = 0; cnt < 8; cnt++ )
{
line = p_image[ cnt ];
spiisolator_write_cmd( ctx, position, line );
position--;
}
}
void c8x8_display_refresh ( spiisolator_t *ctx )
{
uint8_t cnt;
for ( cnt = 1; cnt < 9; cnt++ )
{
spiisolator_write_cmd( ctx, cnt, 0x00 );
}
}
void c8x8_default_cfg ( spiisolator_t *ctx )
{
// Click default configuration
spiisolator_write_cmd( ctx, 0x09, 0x00 ); // decode mode
spiisolator_write_cmd( ctx, 0x0A, 0x07 ); // intensity
spiisolator_write_cmd( ctx, 0x0B, 0x07 ); // scan limit
spiisolator_write_cmd( ctx, 0x0C, 0x01 ); // normal operation mode
c8x8_display_refresh( ctx );
}
// ------------------------------------------------------ APPLICATION FUNCTIONS
void application_init ( void )
{
log_cfg_t log_cfg;
spiisolator_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.
spiisolator_cfg_setup( &cfg );
SPIISOLATOR_MAP_MIKROBUS( cfg, MIKROBUS_1 );
spiisolator_init( &spiisolator, &cfg );
c8x8_default_cfg( &spiisolator );
Delay_100ms( );
}
void application_task ( void )
{
log_info( &logger, "> Display Character ..." );
c8x8_display_byte( &spiisolator, demo_char );
Delay_ms ( 1000 );
log_info( &logger, "> Display String ..." );
c8x8_display_string( &spiisolator, &demo_string[ 0 ] );
Delay_ms ( 1000 );
log_info( &logger, "> Display Image ON ..." );
c8x8_display_image( &spiisolator, &demo_img_on[ 0 ] );
Delay_ms ( 500 );
log_info( &logger, "> Display Image OFF ..." );
c8x8_display_image( &spiisolator, &demo_img_off[ 0 ] );
Delay_ms ( 1000 );
}
int main ( void )
{
/* Do not remove this line or clock might not be set correctly. */
#ifdef PREINIT_SUPPORTED
preinit();
#endif
application_init( );
for ( ; ; )
{
application_task( );
}
return 0;
}
// ------------------------------------------------------------------------ END
