使用ACHS-7194和PIC32MZ1024EFH064实现电流波动的持续洞察

提高准确性

Hall Current 10 Click with PIC32MZ clicker

已发布 6月 26, 2024

点击板

Hall Current 10 Click

开发板

PIC32MZ clicker

编译器

NECTO Studio

微控制器单元

PIC32MZ1024EFH064

通过利用我们的霍尔效应电流传感解决方案，最大限度地延长设备的寿命，该解决方案有助于识别过载条件并防止潜在的损坏。

硬件概览

它是如何工作的？

Hall Current 10 Click基于Broadcom Limited的ACHS-7194，这是一款霍尔效应电流传感器，它发送与通过主输入导体的电流引起的磁场强度成正比的模拟电压。在没有磁场的情况下，输出电压为供电电压的一半。ACHS-7194可以检测直流和交流，设计用于±40A的电流范围。通过将磁信号与霍尔传感器的近距离接触，优化了设备在操作环境温度下的准确性。铜导体的厚度使得设备能够在高过电流条件下生存。导电路径的端子与信号引线电气隔离。这个特性使得

ACHS-7194能够在不需要光耦或其他昂贵的隔离技术的应用中使用。ACHS-7194还具有比率输出，它与供电电压成比例地变化。类似于这样，输出电压，模拟信号，可以使用Microchip的MCP3221转换为数字值，MCP3221是一款具有12位分辨率的逐次逼近A/D转换器，使用2线I2C兼容接口，或者可以直接发送到标记为AN的mikroBUS™插座的模拟引脚。选择可以通过标记为ADC SEL的板上SMD跳线到适当的位置标记为AN和I2C来执行。使用

MCP3221，在标准模式下以最高100kbit/s的速率传输数据，在快速模式下以最高400kbit/s的速率传输数据。此外，在连续转换模式下，MCP3221可以以最大22.3kSPS的样本速率与400kHz的时钟速率进行可能的转换。这个Click板™可以通过VIO SEL跳线选择3.3V或5V逻辑电压电平进行操作。这样，既支持3.3V又支持5V的MCU可以正确使用通信线路。此外，这个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。

Hall Current 10 Click hardware overview image

Hall Current 10 Click Current Warning image

功能概述

开发板

PIC32MZ Clicker 是一款紧凑型入门开发板，它将 Click 板™的灵活性带给您喜爱的微控制器，使其成为实现您想法的完美入门套件。它配备了一款板载 32 位带有浮点单元的 Microchip PIC32MZ 微控制器，一个 USB 连接器，LED 指示灯，按钮，一个 mikroProg 连接器，以及一个用于与外部电子设备接口的头部。得益于其紧凑的设计和清晰易识别的丝网标记，它提供了流畅且沉浸式的工作体验，允许在任

何情况下、任何地方都能访问。PIC32MZ Clicker 开发套件的每个部分都包含了使同一板块运行最高效的必要组件。除了可以选择 PIC32MZ Clicker 的编程方式，使用 USB HID mikroBootloader 或通过外部 mikroProg 连接器为 PIC，dsPIC 或 PIC32 编程外，Clicker 板还包括一个干净且调节过的开发套件电源供应模块。USB Micro-B 连接可以提供多达 500mA 的电流，这足以操作所有板载和附加模块。所有

mikroBUS™ 本身支持的通信方法都在这块板上，包括已经建立良好的 mikroBUS™ 插槽、重置按钮以及若干按钮和 LED 指示灯。PIC32MZ Clicker 是 Mikroe 生态系统的一个组成部分，允许您在几分钟内创建新的应用程序。它由 Mikroe 软件工具原生支持，得益于大量不同的 Click 板™（超过一千块板），其数量每天都在增长，它涵盖了原型制作的许多方面。

微控制器概述

MCU卡片 / MCU

建筑

PIC32

MCU 内存 (KB)

1024

硅供应商

Microchip

引脚数

RAM (字节)

524288

使用的MCU引脚

mikroBUS™映射器

Analog Signal

RE4

RST

SCK

MISO

MOSI

Power Supply

3.3V

Ground

GND

PWM

INT

I2C Clock

RD10

SCL

I2C Data

RD9

SDA

Power Supply

Ground

GND

“仔细看看！”

Click board™ 原理图

Hall Current 10 Click Schematic schematic

一步一步来

项目组装

PIC32MZ clicker front image hardware assembly

从选择您的开发板和Click板™开始。以PIC32MZ clicker作为您的开发板开始。

GNSS2 Click front image hardware assembly

GNSS2 Click complete accessories setup image hardware assembly

Micro B Connector Clicker Access - upright/background hardware assembly

Flip&Click PIC32MZ MCU step hardware assembly

Necto No Display image step 8 hardware assembly

Debug Image Necto Step hardware assembly

实时跟踪您的结果

应用程序输出

1. 应用程序输出 - 在调试模式下，“应用程序输出”窗口支持实时数据监控，直接提供执行结果的可视化。请按照提供的教程正确配置环境，以确保数据正确显示。

2. UART 终端 - 使用UART Terminal通过USB to UART converter监视数据传输，实现Click board™与开发系统之间的直接通信。请根据项目需求配置波特率和其他串行设置，以确保正常运行。有关分步设置说明，请参考提供的教程。

3. Plot 输出 - Plot功能提供了一种强大的方式来可视化实时传感器数据，使趋势分析、调试和多个数据点的对比变得更加直观。要正确设置，请按照提供的教程，其中包含使用Plot功能显示Click board™读数的分步示例。在代码中使用Plot功能时，请使用以下函数：plot(insert_graph_name, variable_name);。这是一个通用格式，用户需要将“insert_graph_name”替换为实际图表名称，并将“variable_name”替换为要显示的参数。

软件支持

库描述

该库包含 Hall Current 10 Click 驱动程序的 API。

关键功能:

hallcurrent10_read_adc - Hall Current 10 I2C ADC读取功能
hallcurrent10_get_adc_voltage - Hall Current 10获取ADC电压功能
hallcurrent10_get_current - Hall Current 10获取电流功能

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 HallCurrent10 Click example
 *
 * # Description
 * This library contains API for Hall Current 10 Click driver.
 * The demo application reads ADC value, ADC voltage and current value.
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * Initializes I2C driver and log UART.
 * After driver initialization the app set default settings.
 *
 * ## Application Task
 * This is an example that demonstrates the use of the Hall Current 10 Click board™.
 * In this example, we read and display the ADC values and current ( mA ) data.
 * Results are being sent to the Usart Terminal where you can track their changes.
 *
 * @author Nenad Filipovic
 *
 */

#include "board.h"
#include "log.h"
#include "hallcurrent10.h"

static hallcurrent10_t hallcurrent10;
static log_t logger;
static uint16_t adc_data;
static float current;
static float adc_voltage;

void application_init ( void ) 
{
    log_cfg_t log_cfg;                      /**< Logger config object. */
    hallcurrent10_cfg_t hallcurrent10_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.
    hallcurrent10_cfg_setup( &hallcurrent10_cfg );
    HALLCURRENT10_MAP_MIKROBUS( hallcurrent10_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == hallcurrent10_init( &hallcurrent10, &hallcurrent10_cfg ) ) 
    {
        log_info( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
    log_printf( &logger, "--------------------------\r\n" );
    Delay_ms ( 100 );
}

void application_task ( void ) 
{
    hallcurrent10_read_adc( &hallcurrent10, &adc_data );
    log_printf( &logger, " ADC Value   : %d \r\n", adc_data );
    Delay_ms ( 100 );
    
    hallcurrent10_get_adc_voltage( &hallcurrent10, &adc_voltage );
    log_printf( &logger, " ADC Voltage : %.2f mV \r\n", adc_voltage );
    log_printf( &logger, "- - - - - - - - - - -  - -\r\n" );
    Delay_ms ( 100 );
    
    hallcurrent10_get_current ( &hallcurrent10, &current );
    log_printf( &logger, " Current     : %.2f mA \r\n", current );
    log_printf( &logger, "--------------------------\r\n" );
    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

/*!
 * @file main.c
 * @brief HallCurrent10 Click example
 *
 * # Description
 * This library contains API for Hall Current 10 Click driver.
 * The demo application reads ADC value, ADC voltage and current value.
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * Initializes I2C driver and log UART.
 * After driver initialization the app set default settings.
 *
 * ## Application Task
 * This is an example that demonstrates the use of the Hall Current 10 Click board™.
 * In this example, we read and display the ADC values and current ( mA ) data.
 * Results are being sent to the Usart Terminal where you can track their changes.
 *
 * @author Nenad Filipovic
 *
 */

#include "board.h"
#include "log.h"
#include "hallcurrent10.h"

static hallcurrent10_t hallcurrent10;
static log_t logger;
static uint16_t adc_data;
static float current;
static float adc_voltage;

void application_init ( void ) 
{
    log_cfg_t log_cfg;                      /**< Logger config object. */
    hallcurrent10_cfg_t hallcurrent10_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.
    hallcurrent10_cfg_setup( &hallcurrent10_cfg );
    HALLCURRENT10_MAP_MIKROBUS( hallcurrent10_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == hallcurrent10_init( &hallcurrent10, &hallcurrent10_cfg ) ) 
    {
        log_info( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
    log_printf( &logger, "--------------------------\r\n" );
    Delay_ms ( 100 );
}

void application_task ( void ) 
{
    hallcurrent10_read_adc( &hallcurrent10, &adc_data );
    log_printf( &logger, " ADC Value   : %d \r\n", adc_data );
    Delay_ms ( 100 );
    
    hallcurrent10_get_adc_voltage( &hallcurrent10, &adc_voltage );
    log_printf( &logger, " ADC Voltage : %.2f mV \r\n", adc_voltage );
    log_printf( &logger, "- - - - - - - - - - -  - -\r\n" );
    Delay_ms ( 100 );
    
    hallcurrent10_get_current ( &hallcurrent10, &current );
    log_printf( &logger, " Current     : %.2f mA \r\n", current );
    log_printf( &logger, "--------------------------\r\n" );
    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

/*!
 * @file main.c
 * @brief HallCurrent10 Click example
 *
 * # Description
 * This library contains API for Hall Current 10 Click driver.
 * The demo application reads ADC value, ADC voltage and current value.
 *
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * Initializes I2C driver and log UART.
 * After driver initialization the app set default settings.
 *
 * ## Application Task
 * This is an example that demonstrates the use of the Hall Current 10 Click board™.
 * In this example, we read and display the ADC values and current ( mA ) data.
 * Results are being sent to the Usart Terminal where you can track their changes.
 *
 * @author Nenad Filipovic
 *
 */

#include "board.h"
#include "log.h"
#include "hallcurrent10.h"

static hallcurrent10_t hallcurrent10;
static log_t logger;
static uint16_t adc_data;
static float current;
static float adc_voltage;

void application_init ( void ) 
{
    log_cfg_t log_cfg;                      /**< Logger config object. */
    hallcurrent10_cfg_t hallcurrent10_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.
    hallcurrent10_cfg_setup( &hallcurrent10_cfg );
    HALLCURRENT10_MAP_MIKROBUS( hallcurrent10_cfg, MIKROBUS_1 );
    if ( I2C_MASTER_ERROR == hallcurrent10_init( &hallcurrent10, &hallcurrent10_cfg ) ) 
    {
        log_info( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );
        for ( ; ; );
    }

    log_info( &logger, " Application Task " );
    log_printf( &logger, "--------------------------\r\n" );
    Delay_ms ( 100 );
}

void application_task ( void ) 
{
    hallcurrent10_read_adc( &hallcurrent10, &adc_data );
    log_printf( &logger, " ADC Value   : %d \r\n", adc_data );
    Delay_ms ( 100 );
    
    hallcurrent10_get_adc_voltage( &hallcurrent10, &adc_voltage );
    log_printf( &logger, " ADC Voltage : %.2f mV \r\n", adc_voltage );
    log_printf( &logger, "- - - - - - - - - - -  - -\r\n" );
    Delay_ms ( 100 );
    
    hallcurrent10_get_current ( &hallcurrent10, &current );
    log_printf( &logger, " Current     : %.2f mA \r\n", current );
    log_printf( &logger, "--------------------------\r\n" );
    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