Maintain signal accuracy in noisy industrial environments with FOD4216 and PIC18F57Q43
OptoTrust: Where signals are safeguarded and isolated!
Published Feb 13, 2024
Click board™
Opto 5 Click
Dev.Board
Curiosity Nano with PIC18F57Q43
Compiler
NECTO Studio
MCU
PIC18F57Q43
Protect your equipment from ground loops and voltage differences, extending the lifespan of your devices
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Hardware Overview
How does it work?
Opto 5 Click is based on the FOD4216, a random phase snubberless Triac driver that provides uncomplicated high voltage safety isolation from ON Semiconductor. It utilizes a high-efficiency infrared emitting diode that offers an improved trigger sensitivity coupled to a hybrid random phase triac formed with two inverse parallel SCRs, which creates the triac function capable of driving discrete triacs. It provides electrical isolation between a low-voltage input and a high-voltage output while switching the high-voltage output. The Triac stands for triode for alternating current and is a device that can conduct current in either direction when triggered or turned on by
detecting a light beam on its trigger junction (Gate). The Triac changes from the off-state to the conducting state when a current or current pulse is applied to the control electrode (Gate). Turning on the device can be achieved while synchronizing with the input voltage, whereas turn-off occurs when the current passes through zero following the control signal removal. Opto 5 Click operates only with the PWM signal from the mikroBUS™ socket that drives the cathode of the FOD4216. In applications, when hot-line switching is required, the “hot” side of the line is switched, and the load is connected to the cold or neutral side. In the case of a Standard Triac usage, the user should add a
39Ω resistor and 0.01uF capacitor parallel to triac terminals A1 and A2 used for snubbing the triac. In the case of highly inductive loads where the power factor is lower than 0.5), the value of a resistor should be 360Ω. In the case of use Snubberless Triac usage, there is no need for these components. This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC 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
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
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
After loading the code example, pressing the "DEBUG" button builds and programs it on the selected setup.
After programming is completed, a header with buttons for various actions available in the IDE appears. By clicking the green "PLAY "button, we start reading the results achieved with Click board™.
Upon completion of programming, the Application Output tab is automatically opened, where the achieved result can be read. In case of an inability to perform the Debug function, check if a proper connection between the MCU used by the setup and the CODEGRIP programmer has been established. A detailed explanation of the CODEGRIP-board connection can be found in the CODEGRIP User Manual. Please find it in the RESOURCES section.
Software Support
Library Description
This library contains API for Opto 5 Click driver.
Key functions:
opto5_pin_set- Opto 5 pin setting functionopto5_pin_clear- Opto 5 pin clearing functionopto5_pin_toggle- Opto 5 pin toggling 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 main.c
* @brief Opto 5 Click Example.
*
* # Description
* This example demonstrates the use of Opto 5 click board.
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initialization of UART LOG and GPIO pin drivers.
* The output of PWM is set to high so the optocoupler
* is not triggered by default.
*
* ## Application Task
* The output pin is toggled every 5 seconds.
*
* @author Stefan Nikolic
*
*/
#include "board.h"
#include "log.h"
#include "opto5.h"
static opto5_t opto5; /**< Opto 5 Click driver object. */
static log_t logger; /**< Logger object. */
void application_init ( void ) {
log_cfg_t log_cfg; /**< Logger config object. */
opto5_cfg_t opto5_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.
opto5_cfg_setup( &opto5_cfg );
OPTO5_MAP_MIKROBUS( opto5_cfg, MIKROBUS_1 );
if ( opto5_init( &opto5, &opto5_cfg ) == DIGITAL_OUT_UNSUPPORTED_PIN ) {
log_error( &logger, " Application Init Error. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
Delay_ms( 100 );
opto5_default_cfg ( &opto5 );
log_info( &logger, " Application Task " );
Delay_ms( 100 );
}
void application_task ( void ) {
Delay_ms( 5000 );
log_printf( &logger, " Pin toggling...\r\n" );
opto5_pin_toggle( &opto5 );
}
void main ( void ) {
application_init( );
for ( ; ; ) {
application_task( );
}
}
// ------------------------------------------------------------------------ END
