Achieve unparalleled precision for all your temperature monitoring needs with TMP451-Q1 and PIC18F57Q43
Heatproof, hassle-free monitoring
Published Nov 08, 2023
Click board™
Thermo 17 Click
Dev Board
EasyPIC PRO v8
Compiler
NECTO Studio
MCU
PIC18F57Q43
Ensure safety and peace of mind with our temperature measurement solution designed to withstand high-temperature environments.
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Hardware Overview
How does it work?
Thermo 17 Click is based on the TMP451-Q1, a high-accuracy, low-power remote temperature sensor monitor with a built-in local temperature sensor from Texas Instruments. It can measure temperature measurements between -40°C and +125°C so that the temperature measurement data can be processed by the host MCU. The remote temperature sensors are typically low-cost discrete NPN or PNP transistors, or substrate thermal transistors or diodes that are integral parts of microprocessors, microcontrollers, or FPGAs. The temperature is represented as a 12-bit digital code for both the local and the remote sensors, giving a resolution of 0.0625°C. The temperature accuracy is ±1°C (maximum) in the typical operating range
for the local and the remote temperature sensors. The two-wire serial interface accepts the SMBus communication protocol. Advanced features such as series resistance cancellation, programmable nonideality factor (ηfactor), programmable offset, programmable temperature limits, and a programmable digital filter are combined to provide a robust thermal monitoring solution with improved accuracy and noise immunity. The TMP451-Q1 device is ideal for multi-location, high-accuracy temperature measurements in a variety of automotive sub-systems. The device is specified for operation over a supply voltage range of 1.7 V to 3.6 V and a temperature range of –40°C to 125°C. Because of its main features, this Click is perfect
for automotive infotainment systems, ECU processor temperature monitoring, TCM processor temperature monitoring, BCM processor temperature monitoring and LED headlight thermal control. The TMP451-Q1 device operates only as a slave device on either the two-wire bus or the SMBus. Connections to either bus are made using the open-drain I/O lines, SDA and SCL. The SDA and SCL pins feature integrated spike suppression filters and Schmitt triggers to minimize the effects of input spikes and bus noise. This Click Board™ is designed to be operated only with 3.3V logic level. A proper logic voltage level conversion should be performed before the Click board™ is used with MCUs with logic levels of 5V.
Features overview
Development board
EasyPIC PRO 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 over WiFi. 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 PRO v8 provides a fluid and immersive working experience, allowing access anywhere and under
any circumstances at any time. Each part of the EasyPIC PRO 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 Ethernet are also included, including the well-established mikroBUS™ standard, a standardized socket for the MCU card (SiBRAIN standard), and two display options (graphical and character-based LCD). EasyPIC PRO 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
PIC
MCU Memory (KB)
128
Silicon Vendor
Microchip
Pin count
48
RAM (Bytes)
8196
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 PRO v8 as your development board.
Track your results in real time
Application Output
After pressing the "FLASH" button on the left-side panel, it is necessary to open the UART terminal to display the achieved results. By clicking on the Tools icon in the right-hand panel, multiple different functions are displayed, among which is the UART Terminal. Click on the offered "UART Terminal" icon.
Once the UART terminal is opened, the window takes on a new form. At the top of the tab are two buttons, one for adjusting the parameters of the UART terminal and the other for connecting the UART terminal. The tab's lower part is reserved for displaying the achieved results. Before connecting, the terminal has a Disconnected status, indicating that the terminal is not yet active. Before connecting, it is necessary to check the set parameters of the UART terminal. Click on the "OPTIONS" button.
In the newly opened UART Terminal Options field, we check if the terminal settings are correct, such as the set port and the Baud rate of UART communication. If the data is not displayed properly, it is possible that the Baud rate value is not set correctly and needs to be adjusted to 115200. If all the parameters are set correctly, click on "CONFIGURE".
The next step is to click on the "CONNECT" button, after which the 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 Thermo 17 Click driver.
Key functions:
thermo17_generic_read- This function reads data from the desired register.thermo17_generic_write- This function writes data to the desired register.thermo17_read_temp- This function reads data from the local or remote registers.
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
* \brief Thermo17 Click example
*
* # Description
* This demo-app shows local and remote temperature measurement procedure using Thermo 17 click.
*
* The demo application is composed of two sections :
*
* ## Application Init
* Initialization of the device and checks ID
*
* ## Application Task
* Appliction measures temp value every 1000ms and logs it
*
* \author Luka Filipovic
*
*/
// ------------------------------------------------------------------- INCLUDES
#include "board.h"
#include "log.h"
#include "thermo17.h"
// ------------------------------------------------------------------ VARIABLES
static thermo17_t thermo17;
static log_t logger;
// ------------------------------------------------------ APPLICATION FUNCTIONS
void application_init ( void )
{
log_cfg_t log_cfg;
thermo17_cfg_t cfg;
uint8_t id_data;
/**
* 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.
thermo17_cfg_setup( &cfg );
THERMO17_MAP_MIKROBUS( cfg, MIKROBUS_1 );
thermo17_init( &thermo17, &cfg );
id_data = thermo17_generic_read( &thermo17 ,THERMO17_REG_R_ID );
if ( id_data == THERMO17_DEV_ID )
{
log_info( &logger, " - Correct device ID" );
}
else
{
log_info( &logger, " - Device ID ERROR" );
for ( ; ; );
}
log_info( &logger, " Starting measurement " );
}
void application_task ( void )
{
float read_data;
read_data = thermo17_read_temp( &thermo17 ,THERMO17_TEMPERATURE_LOCAL );
log_printf( &logger, " - LOCAL: : %.2f C\r\n", read_data );
Delay_ms( 100 );
read_data = thermo17_read_temp( &thermo17 ,THERMO17_TEMPERATURE_REMOTE );
log_printf( &logger, " - REMOTE: : %.2f C\r\n", read_data );
Delay_ms( 100 );
log_printf( &logger, " ******************** \r\n" );
Delay_ms( 1000 );
}
void main ( void )
{
application_init( );
for ( ; ; )
{
application_task( );
}
}
// ------------------------------------------------------------------------ END
