Revitalize your batteries with TP4056 and STM32F101ZG
Empower your devices
Published May 14, 2023
Click board™
Charger 3 Click
Dev. board
UNI-DS v8
Compiler
NECTO Studio
MCU
STM32F101ZG
Incorporate an innovative battery charger into your solution and stay ahead of the competition
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Hardware Overview
How does it work?
Charger 3 Click is based on the TP4056, a complete constant-current/constant-voltage linear charger for single-cell lithium-ion batteries from NanJing Top Power ASIC Corp. This standalone battery charger automatically terminates the charge cycle when the charge current drops to 1/10th of the programmed value after reaching the final float voltage. Thermal feedback regulates the charging current to limit the die temperature during high power operation or high ambient temperature. It also features current monitoring, under-voltage lockout, automatic recharge, and two LEDs to indicate charge termination and the presence of an input voltage. The charge voltage of the TP4056 is specified at 4.2V with 1.5%
accuracy, with the charge current pin programmableup to 1000mA via an onboard single-channel digital potentiometer, the AD5175 from Analog Devices, controllable through the I2C compatible digital interface. When the TP4056 is in a pre-charge mode, this pins voltage is regulated to 0.2V, while in the constant-charge current mode, voltage is regulated to 2V. During the charging process, the voltage on this pin can be used to measure the charge current. Charger 3 Click also has the possibility of connecting an external temperature sensor on the onboard header labeled as NTC. If the voltage of this pin is below 45% or above 80% of the supply voltage for more than 0.15s, the battery’s temperature is too high or too low,
suspending the charging process. Alongside this feature, this Click board™ also has two LEDs to indicate charge termination and the presence of an input voltage, a red LED labeled CHG indicating the charging process, and a green LED labeled STB for fully-charged status. 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. 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
UNI-DS 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 STM32, Kinetis, TIVA, CEC, MSP, PIC, dsPIC, PIC32, and AVR MCUs 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, UNI-DS v8 provides a fluid and immersive working experience, allowing access anywhere and under any
circumstances at any time. Each part of the UNI-DS 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. UNI-DS 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-M3
MCU Memory (KB)
1024
Silicon Vendor
STMicroelectronics
Pin count
144
RAM (Bytes)
81920
You complete me!
Accessories
Li-Polymer Battery is the ideal solution for devices that demand a dependable and long-lasting power supply while emphasizing mobility. Its compatibility with mikromedia boards ensures easy integration without additional modifications. With a voltage output of 3.7V, the battery meets the standard requirements of many electronic devices. Additionally, boasting a capacity of 2000mAh, it can store a substantial amount of energy, providing sustained power for extended periods. This feature minimizes the need for frequent recharging or replacement. Overall, the Li-Polymer Battery is a reliable and autonomous power source, ideally suited for devices requiring a stable and enduring energy solution. You can find a more extensive choice of Li-Polymer batteries in our offer.
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 UNI-DS v8 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 Charger 3 Click driver.
Key functions:
void charger3_cfg_setup ( charger3_cfg_t *cfg );- Config Object Initialization function.CHARGER3_RETVAL charger3_init ( charger3_t *ctx, charger3_cfg_t *cfg );- Initialization function.void charger3_default_cfg ( charger3_t *ctx );- Click Default Configuration 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 main.c
* @brief Charger3 Click example
*
* # Description
* This example demonstrates the utilization of Charger 3 Click.
*
* The demo application is composed of two sections :
*
* ## Application Init
* The application init sets up the UART LOG and I2C communication
* drivers. The default configuration disables write protection
* and sets the operation mode to charging.
*
* ## Application Task
* Task consists of two operations. First, the desired battery
* charging current is set by the user. Since setting the current
* doesn't implicitly reveals the resistance, the value
* of AD5175 digipot is directly read from the RDAC register,
* calculated and displayed on the uart log.
*
* *note:*
* While the resistance of the AD5175 can be directly set and read,
* the total resistance value on the PROG pin should be accounted for
* ( this means an additional 1kohm in series ) setting of the
* battery charging current.
*
* @author Stefan Nikolic
*
*/
#include "board.h"
#include "log.h"
#include "charger3.h"
static charger3_t charger3;
static log_t logger;
void application_init ( void ) {
log_cfg_t log_cfg; /**< Logger config object. */
charger3_cfg_t charger3_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.
charger3_cfg_setup( &charger3_cfg );
CHARGER3_MAP_MIKROBUS( charger3_cfg, MIKROBUS_1 );
err_t init_flag = charger3_init( &charger3, &charger3_cfg );
if ( init_flag == I2C_MASTER_ERROR ) {
log_error( &logger, " Application Init Error. " );
log_info( &logger, " Please, run program again... " );
for ( ; ; );
}
Delay_ms ( 100 );
charger3_default_cfg ( &charger3 );
log_info( &logger, " Application Task " );
log_printf( &logger, " ------------------------------------\r\n" );
Delay_ms ( 100 );
}
void application_task ( void ) {
float result;
charger3_set_current( &charger3, 0.4 );
Delay_ms ( 1000 );
result = charger3_calc_digipot_res( &charger3 );
log_printf( &logger, " Digipot res value: %.2f ohm\r\n", result );
log_printf( &logger, " ------------------------------------\r\n" );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
Delay_ms ( 1000 );
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
