Elevate your cooling experience with TC654 and TM4C129XNCZAD
Seamlessly adjust fan speeds for a relaxing atmosphere
Published Jul 01, 2023
Click board™
Fan 5 Click
Dev Board
Fusion for Tiva v8
Compiler
NECTO Studio
MCU
TM4C129XNCZAD
Take control of the perfect airflow with our PWM-mode fan speed controller!
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Hardware Overview
How does it work?
Fan 5 Click is based on the TC654, a fan speed controller from Microchip that allows you to control and monitor the speed of two DC brushless fans. The TC654 is based on the FanSense™ technology, which protects your application against fan failure and eliminates the need for 3-wire fans. With the TC654, the fan speed can be controlled by its input voltage or the serial interface, allowing for high flexibility. The input voltage of the TC654 represents temperature, typically provided by a chosen internal or external thermistor (selected using an NTC SEL jumper). The TC654 controls fan speed according to the system temperature by pulse-width modulating the voltage across the fan. This method reduces the fan'sfan's acoustic noise and extends the fan'sfan's working life. An external N-channel MOSFET, one per channel, controls the
fans. Modulating the voltage applied to the gate of the MOSFETs also modulates the voltage applied to the fan. The PWM output can be adjusted between 30% and 100%, based on the TC654's input voltage, or programmed, as mentioned, via the I2C interface to allow fan speed control without needing an external thermistor. The standard I2C 2-Wire interface reads data and configures settings with a maximum frequency of 100kHz. The TC654 also measures and monitors fan revolutions per minute (RPM), representing a measure of its health. As a fan'sfan's bearings wear out, the fan slows down and eventually stops (locked rotor). The TC654 can detect open, shorted, unconnected, and locked rotor fan conditions by monitoring the fan'sfan's RPM level. Apart from the availability of this information on the FLT pin of the mikroBUS™ socket, this condition can also be
visually detected through the red LED marked with FAULT. The fan RPM data and threshold registers are available over the I2C interface, allowing complete system control. In addition to the two terminals for fan connections, there is another terminal, VFAN, for an external 12V power supply for FAN1. FAN2 uses the necessary supply from the 5V mikroBUS™ power rail. This Click board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V MCUs can use the communication lines correctly. However, the 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
Fusion for TIVA v8 is a development board specially designed for the needs of rapid development of embedded applications. It supports a wide range of microcontrollers, such as different 32-bit ARM® Cortex®-M based MCUs from Texas Instruments, regardless of their number of pins, and a broad set of unique functions, such as the first-ever embedded debugger/programmer over a WiFi network. 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, Fusion for TIVA v8 provides a fluid and immersive working experience, allowing access
anywhere and under any circumstances at any time. Each part of the Fusion for TIVA v8 development board contains the components necessary for the most efficient operation of the same board. An advanced integrated CODEGRIP programmer/debugger module offers many valuable programming/debugging options, including support for JTAG, SWD, and SWO Trace (Single Wire Output)), and seamless integration with the Mikroe software environment. Besides, it 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 HOST/DEVICE, CAN (on the MCU card, if supported), and Ethernet is also included. In addition, it also has the well-established mikroBUS™ standard, a standardized socket for the MCU card (SiBRAIN standard), and two display options for the TFT board line of products and character-based LCD. Fusion for TIVA 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
Type
8th Generation
Architecture
ARM Cortex-M4
MCU Memory (KB)
1024
Silicon Vendor
Texas Instruments
Pin count
212
RAM (Bytes)
262144
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 Fusion for Tiva 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 Fan 5 Click driver.
Key functions:
fan5_get_rpm1- Fan 5 get speed of FAN1fan5_set_duty_cycle- Fan 5 set duty cyclefan5_turn_on_fans- Fan 5 turn on fans
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 main.c
* @brief Fan 5 Click example
*
* # Description
* This example demonstrates the use of FAN 5 click board by controlling and
* regulating the fan motors speed.
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initializes the driver, performs the click default configuration, reads
* manufacturer id and sets configuration in correspondence to user-selected mode.
*
* ## Application Task
* If Fan control is selected example will monitor FAN 1 speed and if the speed
* falls below 500 RPM for longer then 2.4 seconds fan output will be disabled.
* In other case, example is showcasing speed control by changing duty cycle and
* monitoring fan speed.
*
* @author Stefan Ilic
*
*/
#include "board.h"
#include "log.h"
#include "fan5.h"
#define FAN_CONTROL_MODE
static fan5_t fan5;
static log_t logger;
void application_init ( void )
{
log_cfg_t log_cfg; /**< Logger config object. */
fan5_cfg_t fan5_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.
fan5_cfg_setup( &fan5_cfg );
FAN5_MAP_MIKROBUS( fan5_cfg, MIKROBUS_1 );
if ( I2C_MASTER_ERROR == fan5_init( &fan5, &fan5_cfg ) )
{
log_error( &logger, " Communication init." );
for ( ; ; );
}
if ( FAN5_ERROR == fan5_default_cfg ( &fan5 ) )
{
log_error( &logger, " Default configuration." );
for ( ; ; );
}
fan5_turn_on_fans( &fan5 );
uint8_t id = 0;
fan5_get_mfr_id( &fan5, &id );
log_printf( &logger, " Manufacturer ID: 0x%X \r\n", ( uint16_t ) id );
#if defined FAN_CONTROL_MODE
fan5_set_duty_cycle( &fan5, FAN5_100_PER_DUTY );
fan5_set_fan_fault1( &fan5, 500 );
#else
fan5_set_duty_cycle( &fan5, FAN5_30_PER_DUTY );
fan5_set_fan_fault1( &fan5, 0 );
#endif
log_info( &logger, " Application Task " );
}
void application_task ( void )
{
#if defined FAN_CONTROL_MODE
uint16_t speed = 0;
uint8_t flag_data = 0;
fan5_get_rpm1( &fan5, &speed);
log_printf( &logger, " SPEED: %d RPM \r\n", speed );
if ( FAN5_FAULT == fan5_get_fault_state( &fan5 ) )
{
fan5_get_status_flags ( &fan5, &flag_data );
log_printf( &logger, " FLAG: %d \r\n", flag_data );
if ( FAN5_F1F_FLAG & flag_data )
{
log_printf( &logger, " FAN SPEED DROPED !!! \r\n" );
log_printf( &logger, " OUTPUT IS DISABLED \r\n" );
fan5_turn_off_fans( &fan5 );
for( ; ; );
}
}
Delay_ms( 2000 );
#else
uint16_t speed;
uint8_t duty_value;
for ( duty_value = FAN5_30_PER_DUTY; duty_value <= FAN5_100_PER_DUTY; duty_value++ )
{
fan5_set_duty_cycle( &fan5, duty_value );
log_printf( &logger, " Duty value: %d \r\n", ( uint16_t ) duty_value );
Delay_ms( 5000 );
fan5_get_rpm1( &fan5, &speed);
log_printf( &logger, " SPEED: %d RPM \r\n", speed );
Delay_ms( 500 );
}
#endif
}
void main ( void )
{
application_init( );
for ( ; ; )
{
application_task( );
}
}
// ------------------------------------------------------------------------ END
