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EFM32 Gecko Software Documentation
efm32g-doc-5.1.2
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EFM32 Gecko Software Documentation
efm32g-doc-5.1.2
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Capacitive sense driver.
Copyright 2015 Silicon Labs, Inc. http://www.silabs.com
This file is licensed under the Silabs License Agreement. See the file "Silabs_License_Agreement.txt" for details. Before using this software for any purpose, you must agree to the terms of that agreement.
Definition in file capsense.c.
#include "em_device.h"#include "em_acmp.h"#include "em_cmu.h"#include "em_emu.h"#include "capsense.h"Go to the source code of this file.
Functions | |
| uint32_t | CAPSENSE_getNormalizedVal (uint8_t channel) |
| Get the current normalized channelValue for a channel. More... | |
| bool | CAPSENSE_getPressed (uint8_t channel) |
| Get the state of the Gecko Button. More... | |
| int32_t | CAPSENSE_getSliderPosition (void) |
| Get the position of the slider. More... | |
| uint32_t | CAPSENSE_getVal (uint8_t channel) |
| Get the current channelValue for a channel. More... | |
| void | CAPSENSE_Init (void) |
| Initializes the capacitive sense system. More... | |
| 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. More... | |
| void TIMER0_IRQHandler | ( | void | ) |
TIMER0 interrupt handler.
When TIMER0 expires the number of pulses on TIMER1 is inserted into channelValues. If this values is bigger than what is recorded in channelMaxValues, channelMaxValues is updated. Finally, the next ACMP channel is selected.
Definition at line 92 of file capsense.c.
References channelMaxValues, channelValues, currentChannel, TIMER0, TIMER1, TIMER_CMD_STOP, and TIMER_IFC_OF.
1.8.10