Silicon Labs / Mbed 2 deprecated Segment-Touch-Demo

Using the cap slider and segment LCD on LG/WG/GG.

Dependencies:   EFM32_CapSenseSlider EFM32_SegmentLCD mbed

Demo program showing the capacitive slider and segment LCD functionality of the Leopard, Wonder and Giant Gecko Starter Kits.

Information

All examples in this repo are considered EXPERIMENTAL QUALITY, meaning this code has been created as one-off proof-of-concept and is suitable as a demonstration for experimental purposes only. This code will not be regularly maintained by Silicon Labs and there is no guarantee that these projects will work across all environments, SDK versions and hardware.

main.cpp

Committer:
stevew817
Date:
2016-09-12
Revision:
8:431b1f7d9f22
Parent:
7:1e0a14ce9ca1

File content as of revision 8:431b1f7d9f22:

#include "EFM32_SegmentLCD.h"
#include "EFM32_CapSenseSlider.h"

/******************** Define I/O *****************************/
InterruptIn in(PB9);

silabs::EFM32_SegmentLCD segmentDisplay;
silabs::EFM32_CapSenseSlider capSlider;

/******************** Define Timers *****************************/
LowPowerTicker refreshTicker;

/***************** Define global variables **********************/
#define INIT_SECONDS		17600
#define TEST_DURATION		10

volatile uint32_t count = 0, seconds = INIT_SECONDS;


/***************** Define callback handlers *********************/
void tickerCallback(void);
void in_handler();
void touchCallback(void);
void slideCallback(void);

/**
 * Callback for pushbutton interrupt
 */
void in_handler() {
    count++;
    segmentDisplay.ARing(count & 0x7, (count & 0x8) == 0);
}

/**
 * Callback for 1 second timebase
 */
void tickerCallback(void) {
	seconds++;
	uint32_t clockValue = ((seconds / 60) % 60) * 100 + (seconds % 60);
	segmentDisplay.Number(clockValue);
	segmentDisplay.Symbol(LCD_SYMBOL_COL10, seconds & 0x1);
}

/**
 * Callback for touching/untouching the cap slider
 */
void touchCallback(void) {
    segmentDisplay.Symbol(LCD_SYMBOL_EFM32, capSlider.isTouched());

    if(!capSlider.isTouched()) {
        segmentDisplay.Write("Hello");
    }
}

/**
 * Callback for sliding the cap slider
 */
void slideCallback(void) {
    segmentDisplay.LowerNumber(capSlider.get_position());
}

/*************************** MAIN *******************************/
int main() {
	// Initialize pushbutton handler
	in.rise(NULL);
	in.fall(in_handler);

	// Enable the capacitive slider
	capSlider.start();
	capSlider.attach_touch(touchCallback);
	capSlider.attach_untouch(touchCallback);
	capSlider.attach_slide(-1, slideCallback);

	// Start generating the 1Hz timebase
	refreshTicker.attach(&tickerCallback, 1.0f);

	printf("Initialization done! \n");
	wait(0.01f); //Need to delay slightly to give the serial transmission a chance to flush out its buffer
	segmentDisplay.Write("Hello");

	// Go into sleeping mode
	while(1)
	{
		sleep();
		if(count >= 8) {
		    // Go to 'completely dead' mode to show power consumption
		    refreshTicker.detach();
		    capSlider.stop();
		    in.disable_irq();
		    delete &segmentDisplay;
		}
	}
}