capsense.c File Reference

Capacitive sense driver.

License

Copyright 2018 Silicon Laboratories Inc. www.silabs.com

SPDX-License-Identifier: Zlib

The licensor of this software is Silicon Laboratories Inc.

This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions:

  1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.

Definition in file capsense.c.

#include "em_device.h"
#include "em_acmp.h"
#include "em_cmu.h"
#include "em_emu.h"
#include "capsense.h"

Functions

uint32_t CAPSENSE_getNormalizedVal (uint8_t channel)
 Get the current normalized channelValue for a channel.
 
bool CAPSENSE_getPressed (uint8_t channel)
 Get the state of the Gecko Button.
 
int32_t CAPSENSE_getSliderPosition (void)
 Get the position of the slider.
 
uint32_t CAPSENSE_getVal (uint8_t channel)
 Get the current channelValue for a channel.
 
void CAPSENSE_Init (void)
 Initializes the capacitive sense system.
 
static void CAPSENSE_Measure (ACMP_Channel_TypeDef channel)
 Start a capsense measurement of a specific channel and waits for it to complete.
 
void CAPSENSE_Sense (void)
 This function iterates through all the capsensors and reads and initiates a reading. Uses EM1 while waiting for the result from each sensor.
 
void TIMER0_IRQHandler (void)
 TIMER0 interrupt handler.