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使用AP33772和STM32L496AG体验无缝充电和数据同步的未来

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USB-C Sink 2 Click with Discovery kit with STM32L496AG MCU

已发布 7月 22, 2025

点击板

USB-C Sink 2 Click

开发板

Discovery kit with STM32L496AG MCU

编译器

NECTO Studio

微控制器单元

STM32L496AG

用我们领先的USB-C接收端解决方案改变您的连接和充电方式,提供超出期望的可靠性和性能。

A

A

硬件概览

它是如何工作的?

USB-C Sink 2 Click基于Diodes Incorporated的高性能USB PD接收端控制器AP33772。主机MCU可以以20mV/步的电压和50mA/步的电流控制PPS。PD控制器支持过温保护(OTP)、带自动重启的过压保护(OVP)、带自动重启的过流保护(OCP)、一次编程(OTP)、省电模式和系统监视和控制状态寄存器。对于OTP,此Click板™配备了一个NTC温度传感器,可选择温度点(25°C、50°C、75°C、100°C)作为温度阈值。板载的FAULT LED用作协商不匹配的可视表示。多次编程(MTP)保留供将来配置使用。这个USB Type-C电源传输接收端控制器需要从标准USB源适配器获

得电源,在我们的情况下是从标记为USB-C PD-IN的USB连接器获得,然后将电源传输到连接的设备上的VSINK连接器。一对MOSFET位于USB和VSINK端之间,根据AP33772驱动器进行N-MOS VBUS电源开关支持。PD控制器可以通过I2C接口控制外部NMOS开关的开关(所有控制都通过I2C接口完成)。USB C连接器充当带有USB Type-C配置通道1和2的PD-IN放电路径终端。USB C上的电源供应存在时,通过VBUS LED指示。AP33772配备有几个GPIO。用户可配置的GPIO1和GPIO2可在标记为GP1和GP2的侧面排针上找到,还带有额外的GND。此外,此Click板™还具有几个测试点供测试

使用。可以通过V5V和V3V测试点测量5V和3.3V LDO电压输出,通过VFB测试点测量电压反馈。USB-C Sink 2 Click使用标准的2线I2C接口与主机MCU通信。来自AP33772的中断可以通过INT引脚进行监视。USB-C Sink 2 Click的另一个附加功能是通过mikroBUS™插座的AN引脚跟踪VBUS电压。此Click板™可以通过VCC SEL跳线选择3.3V或5V逻辑电压电平。这样,既能使3.3V也能使5V能力的MCU正确使用通信线路。此外,此Click板™配备了一个包含易于使用的函数和示例代码的库,可用作进一步开发的参考。

USB-C Sink 2 Click hardware overview image

功能概述

开发板

32L496GDISCOVERY Discovery 套件是一款功能全面的演示和开发平台,专为搭载 Arm® Cortex®-M4 内核的 STM32L496AG 微控制器设计。该套件适用于需要在高性能、先进图形处理和超低功耗之间取得平衡的应用,支持无缝原型开发,适用于各种嵌入式解决方案。STM32L496AG 采用创新的节能架构,集成

了扩展 RAM 和 Chrom-ART 图形加速器,在提升图形性能的同时保持低功耗,使其特别适用于音频处理、图形用户界面和实时数据采集等对能效要求较高的应用。为了简化开发流程,该开发板配备了板载 ST-LINK/V2-1 调试器/编程器,提供即插即用的调试和编程体验,使用户无需额外硬件即可轻松加载、调

试和测试应用程序。凭借低功耗特性、增强的内存能力以及内置调试工具,32L496GDISCOVERY 套件是开发先进嵌入式系统、实现高效能解决方案的理想选择。

Discovery kit with STM32L496AG MCU double side image

微控制器概述 

MCU卡片 / MCU

STM32L496AG Image

建筑

ARM Cortex-M4

MCU 内存 (KB)

1024

硅供应商

STMicroelectronics

引脚数

169

RAM (字节)

327680

使用的MCU引脚

mikroBUS™映射器

Analog Output
PA4
AN
NC
NC
RST
NC
NC
CS
NC
NC
SCK
NC
NC
MISO
NC
NC
MOSI
Power Supply
3.3V
3.3V
Ground
GND
GND
NC
NC
PWM
Interrupt
PH2
INT
NC
NC
TX
NC
NC
RX
I2C Clock
PB8
SCL
I2C Data
PB7
SDA
Power Supply
5V
5V
Ground
GND
GND
1

“仔细看看!”

Click board™ 原理图

USB-C Sink 2 Click Schematic schematic

一步一步来

项目组装

Discovery kit with STM32H750XB MCU front image hardware assembly

从选择您的开发板和Click板™开始。以Discovery kit with STM32L496AG MCU作为您的开发板开始。

Discovery kit with STM32H750XB MCU front image hardware assembly
Thermo 21 Click front image hardware assembly
Prog-cut hardware assembly
Thermo 21 Click complete accessories setup image hardware assembly
Board mapper by product7 hardware assembly
Necto image step 2 hardware assembly
Necto image step 3 hardware assembly
Necto image step 4 hardware assembly
Necto image step 5 hardware assembly
Necto image step 6 hardware assembly
Discovery kit with STM32H750XB MCU NECTO MCU Selection Step hardware assembly
Necto No Display image step 8 hardware assembly
Necto image step 9 hardware assembly
Necto image step 10 hardware assembly
Necto image step 11 hardware assembly

软件支持

库描述

该库包含 USB-C Sink 2 Click 驱动程序的 API。

关键功能:

  • usbcsink2_write_rdo - USB-C接收端2写入RDO函数。

  • usbcsink2_get_pdo_voltage - USB-C接收端2获取电压函数。

  • usbcsink2_get_pdo_current - USB-C接收端2获取电流函数。

开源

代码示例

完整的应用程序代码和一个现成的项目可以通过NECTO Studio包管理器直接安装到NECTO Studio 应用程序代码也可以在MIKROE的GitHub账户中找到。

/*!
 * @file main.c
 * @brief USB-C Sink 2 Click Example.
 *
 * # Description
 * This example demonstrates the use of the USB-C Sink 2 Click board™ 
 * by setting DC power requests and control for Type-C connector-equipped devices (TCD).
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * Initializes I2C and ADC modules and log UART.
 * After driver initialization the app set default settings.
 *
 * ## Application Task
 * In this example, the app configures Power Data Objects (PDO) 
 * highest priority profile and requests power from a standard USB PD source adapter.
 * After connecting the PD source and USB-C Sink 2 Click with the Type-C cable,
 * the app gets the total number of valid PDO's 
 * and switches all PDO configurations every 10 seconds.
 * When the PD source accepts the request, the app displays information about 
 * VOUT Voltage [mV] and Current [mA] and the temperature [degree Celsius] of the USB-C connector.
 *
 * @note
 * FAULT LED flickering notified of the system status:
 *  - Charging: Breathing light (2 sec dimming), 1 cycle is 4 sec.
 *  - Fully charged: Continuously lit Charging current < 500mA.
 *  - Mismatch: 1s flicker Voltage or power mismatch. Non-PD power source, 1 cycle is 2sec.
 *  - Fault: 300ms flicker OVP, 1 cycle is 600ms.
 * 
 * @author Nenad Filipovic
 *
 */

#include "board.h"
#include "log.h"
#include "usbcsink2.h"

static usbcsink2_t usbcsink2;   /**< USB-C Sink 2 Click driver object. */
static log_t logger;    /**< Logger object. */

void application_init ( void )
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    usbcsink2_cfg_t usbcsink2_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.
    usbcsink2_cfg_setup( &usbcsink2_cfg );
    USBCSINK2_MAP_MIKROBUS( usbcsink2_cfg, MIKROBUS_1 );
    err_t init_flag = usbcsink2_init( &usbcsink2, &usbcsink2_cfg );
    if ( ( ADC_ERROR == init_flag ) || ( I2C_MASTER_ERROR == init_flag ) )
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }
    
    if ( USBCSINK2_ERROR == usbcsink2_default_cfg ( &usbcsink2 ) )
    {
        log_error( &logger, " Default configuration." );
        for ( ; ; );
    }
    
    log_info( &logger, " Application Task " );
    log_printf( &logger, "---------------------------\r\n" );
    Delay_ms ( 100 );
}

void application_task ( void ) 
{
    static float voltage_mv = 0, current_ma = 0;
    static uint8_t temperature = 0;
    for ( uint8_t pdo_num = 0; pdo_num < usbcsink2.number_of_valid_pdo; pdo_num++ )
    {
        usbcsink2.pdo_data[ pdo_num * 4 + 3 ] = ( pdo_num + 1 ) << 4;
        if ( USBCSINK2_OK == usbcsink2_write_rdo( &usbcsink2, &usbcsink2.pdo_data[ pdo_num * 4 ] ) )
        {
            log_printf( &logger, " --- PDO[ %d ] ---\r\n", ( uint16_t ) pdo_num );
        }
        
        if ( USBCSINK2_OK == usbcsink2_wait_rdo_req_success( &usbcsink2 ) )
        {
            if ( USBCSINK2_OK == usbcsink2_get_pdo_voltage( &usbcsink2, &voltage_mv ) )
            {
                log_printf( &logger, " Voltage : %.2f mV\r\n", voltage_mv );
            }
            
            if ( USBCSINK2_OK == usbcsink2_get_pdo_current( &usbcsink2, &current_ma ) )
            {
                log_printf( &logger, " Current : %.2f mA\r\n", current_ma );
            }
            
            if ( USBCSINK2_OK == usbcsink2_get_temperature( &usbcsink2, &temperature ) )
            {
                log_printf( &logger, " Temperature : %d C\r\n", ( uint16_t ) temperature );
            }
            log_printf( &logger, "---------------------------\r\n" );
            // 10 seconds delay
            Delay_ms ( 1000 );
            Delay_ms ( 1000 );
            Delay_ms ( 1000 );
            Delay_ms ( 1000 );
            Delay_ms ( 1000 );
            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

额外支持

资源

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