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mikroSDK Library

Cap Extend 3 click

Rating:

5

Author: MikroElektronika Team

Last Updated: 2018-01-23

Category: Proximity

Downloaded: 1715 times

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License: MIT license  

Cap Extend 3 click features four capacitive sensor pads integrated on the PCB, that can sense touch through a variety of different materials.

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mikroSDK Library Blog

Cap Extend 3 Click

Cap Extend 3 Click

Native view of the Cap Extend 3 Click board.

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Cap Extend 3 Click

Cap Extend 3 Click

Front and back view of the Cap Extend 3 Click board.

View full image

Library Description

Initializes GPIO driver and click driver functions, which detect a touch on determined pins. For more details, check the documentation.

Key functions

uint8_t capextend3_Touch_0()- The function reads a state of the AN pin.
uint8_t capextend3_Touch_1()- The function reads a state of the RST pin.
uint8_t capextend3_Touch_2()- The function reads a state of the CS pin.
uint8_t capextend3_Touch_3()- The function reads a state of the INT pin.
uint8_t capextend3_Touch_4()- The function reads a state of the PWM pin.

Examples Description

The demo application is composed of three sections:

  • System Initialization - Initializes AN, RST, CS, PWM, INT pin as INPUT.
  • Application Initialization - Initializes GPIO Driver.
  • Application Task - (code snippet) - The USB UART shows the number of the button which is being touched.
void applicationTask()
{
   touch_1 = capextend3_Touch_1();
   touch_0 = capextend3_Touch_0();
   touch_3 = capextend3_Touch_3();
   touch_4 = capextend3_Touch_4();

   if( touch_0 == 0 )
      mikrobus_logWrite("Touch 0 ",_LOG_LINE);

   if( touch_1 == 0 )
      mikrobus_logWrite("Touch 1 ",_LOG_LINE);

   if( touch_3 == 0 )
      mikrobus_logWrite("Touch 3 ",_LOG_LINE);

   if( touch_4 == 0 )
      mikrobus_logWrite("Touch 4 ",_LOG_LINE);

   Delay_ms( 100 );
}

Other MikroElektronika libraries used in the example:

  • UART

Additional notes and information

Depending on the development board you are using, you may need USB UART clickUSB UART 2 click or  RS232 click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all MikroElektronika compilers, or any other terminal application of your choice, can be used to read the message.

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