proximity10

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Proximity 10 Click

Proximity 10 Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

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Click Library

• Author : MikroE Team
• Date : jan 2020.
• Type : I2C type

Software Support

Example Description

This application enables proximity sensor to detect objects from distance up to 20cm.

Example Libraries

• MikroSDK.Board
• MikroSDK.Log
• Click.Proximity10

Example Key Functions

• proximity10_cfg_setup Config Object Initialization function.

void proximity10_cfg_setup ( proximity10_cfg_t *cfg );

• proximity10_init Initialization function.

err_t proximity10_init ( proximity10_t *ctx, proximity10_cfg_t *cfg );

• proximity10_default_cfg Click Default Configuration function.

void proximity10_default_cfg ( proximity10_t *ctx );

• proximity10_check_int_status This function checks the desired interrupt flags status.

uint8_t proximity10_check_int_status ( proximity10_t *ctx, uint8_t bit_mask, uint8_t clear_en );

• proximity10_send_command This function allows user to execute a desired command and checks the response.

uint8_t proximity10_send_command ( proximity10_t *ctx, uint8_t prox_command );

• proximity10_param_set This function sets the selected parameter to the desired value, and checks the response.

uint8_t proximity10_param_set ( proximity10_t *ctx, uint8_t param_addr, uint8_t param_value );

Application Init

Initializes I2C serial interface and performs a device wake up, reset and all necessary configurations. The device will wake up and performs measurements every 10 milliseconds.

void application_init ( void )
{
    log_cfg_t log_cfg;
    proximity10_cfg_t cfg;

    uint8_t w_temp;
    uint8_t cmd_resp;

    /** 
     * 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.

    proximity10_cfg_setup( &cfg );
    PROXIMITY10_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    proximity10_init( &proximity10, &cfg );

    Delay_ms ( 500 );

    w_temp = PROXIMITY10_HW_KEY;
    proximity10_generic_write( &proximity10, PROXIMITY10_HW_KEY_REG, &w_temp, 1 );
    
    cmd_resp = proximity10_send_command( &proximity10, PROXIMITY10_NOP_CMD );
    check_response( cmd_resp );
    cmd_resp = proximity10_send_command( &proximity10, PROXIMITY10_RESET_CMD );
    check_response( cmd_resp );
    Delay_ms ( 200 );
    
    cmd_resp = proximity10_param_set( &proximity10, PROXIMITY10_CHLIST_PARAM, PROXIMITY10_EN_AUX | PROXIMITY10_EN_ALS_IR | PROXIMITY10_EN_ALS_VIS | PROXIMITY10_EN_PS1 );
    check_response( cmd_resp );
    cmd_resp = proximity10_param_set( &proximity10, PROXIMITY10_PSLED12_SEL_PARAM, PROXIMITY10_LED1_DRIVE_EN );
    check_response( cmd_resp );
    cmd_resp = proximity10_param_set( &proximity10, PROXIMITY10_PS_ADC_MISC_PARAM, PROXIMITY10_NORMAL_SIGNAL_RANGE | PROXIMITY10_NORMAL_PROX_MEAS_MODE );
    check_response( cmd_resp );
    cmd_resp = proximity10_param_set( &proximity10, PROXIMITY10_PS_ADC_GAIN_PARAM, PROXIMITY10_ADC_CLOCK_DIV_4 );
    check_response( cmd_resp );

    proximity10_default_cfg ( &proximity10 );

    cmd_resp = proximity10_send_command( &proximity10, PROXIMITY10_PS_AUTO_CMD );
    check_response( cmd_resp );
    
    //Sound_Init( &GPIOE_ODR, 14 ); //??
    
    log_printf( &logger, "** Proximity 10 is initialized **\r\n" );
    log_printf( &logger, "**************************************\r\n" );
    Delay_ms ( 500 );
}

Application Task

Reads the proximity PS1 data value and sends result to the uart terminal. If measured proximity value is greater than selected proximity threshold value, the interrupt will be generated and the message will be showed on the uart terminal. When interrupt is generated the Sound function will make an alarm sound with determined duration depending on the > detected proximity value, how much is object away or close from the sensor.

void application_task ( void )
{
    //  Task implementation.

    uint32_t proximity;
    uint8_t temp_read[ 2 ];
    uint8_t int_status;
    uint16_t alarm_dur;

    proximity10_generic_read( &proximity10, PROXIMITY10_PS1_DATA_REG, &temp_read, 2 );
    proximity = temp_read[ 1 ];
    proximity <<= 8;
    proximity |= temp_read[ 0 ];
    
    log_printf( &logger, "** Proximity PS1 : %u \r\n", proximity );
    
    int_status = proximity10_check_int_status( &proximity10, PROXIMITY10_PS1_INT_FLAG, PROXIMITY10_INT_CLEAR_DIS );
    
    if ( int_status == PROXIMITY10_PS1_INT_FLAG )
    {
        log_printf( &logger, "** Object is detected **\r\n" );
        
        alarm_dur = proximity / 100;
        alarm_dur = alarm_dur + 35;
        alarm_dur = ( float )( alarm_dur * 0.30928 );
        alarm_dur = 180 - alarm_dur;
        
       // Sound_Play( 1400, alarm_dur );  //??
        Delay_ms ( 100 );
    }
    else
    {
        Delay_ms ( 200 );
    }
    log_printf( &logger, "**************************************\r\n" );
}

Note

Additional Functions :

• checkResponse - Sends an error code message to the uart terminal if error code is detected in the response.

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

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.

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