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@8:431b1f7d9f22, 2016-09-12 (annotated)

Committer:
stevew817
Date:
Mon Sep 12 10:49:51 2016 +0000
Revision:
8:431b1f7d9f22
Parent:
7:1e0a14ce9ca1 
Pull new version of mbed

Who changed what in which revision?

UserRevisionLine numberNew contents of line
stevew817 0:9d3739ba3237 1 #include "EFM32_SegmentLCD.h"
stevew817 0:9d3739ba3237 2 #include "EFM32_CapSenseSlider.h"
stevew817 0:9d3739ba3237 3
stevew817 0:9d3739ba3237 4 /******************** Define I/O *****************************/
stevew817 0:9d3739ba3237 5 InterruptIn in(PB9);
stevew817 0:9d3739ba3237 6
stevew817 0:9d3739ba3237 7 silabs::EFM32_SegmentLCD segmentDisplay;
stevew817 0:9d3739ba3237 8 silabs::EFM32_CapSenseSlider capSlider;
stevew817 0:9d3739ba3237 9
stevew817 0:9d3739ba3237 10 /******************** Define Timers *****************************/
stevew817 0:9d3739ba3237 11 LowPowerTicker refreshTicker;
stevew817 0:9d3739ba3237 12
stevew817 0:9d3739ba3237 13 /***************** Define global variables **********************/
stevew817 0:9d3739ba3237 14 #define INIT_SECONDS 17600
stevew817 0:9d3739ba3237 15 #define TEST_DURATION 10
stevew817 0:9d3739ba3237 16
stevew817 0:9d3739ba3237 17 volatile uint32_t count = 0, seconds = INIT_SECONDS;
stevew817 0:9d3739ba3237 18
stevew817 0:9d3739ba3237 19
stevew817 0:9d3739ba3237 20 /***************** Define callback handlers *********************/
stevew817 0:9d3739ba3237 21 void tickerCallback(void);
stevew817 0:9d3739ba3237 22 void in_handler();
stevew817 0:9d3739ba3237 23 void touchCallback(void);
stevew817 0:9d3739ba3237 24 void slideCallback(void);
stevew817 0:9d3739ba3237 25
stevew817 0:9d3739ba3237 26 /**
stevew817 0:9d3739ba3237 27 * Callback for pushbutton interrupt
stevew817 0:9d3739ba3237 28 */
stevew817 0:9d3739ba3237 29 void in_handler() {
stevew817 0:9d3739ba3237 30 count++;
stevew817 0:9d3739ba3237 31 segmentDisplay.ARing(count & 0x7, (count & 0x8) == 0);
stevew817 0:9d3739ba3237 32 }
stevew817 0:9d3739ba3237 33
stevew817 0:9d3739ba3237 34 /**
stevew817 0:9d3739ba3237 35 * Callback for 1 second timebase
stevew817 0:9d3739ba3237 36 */
stevew817 0:9d3739ba3237 37 void tickerCallback(void) {
stevew817 0:9d3739ba3237 38 seconds++;
stevew817 0:9d3739ba3237 39 uint32_t clockValue = ((seconds / 60) % 60) * 100 + (seconds % 60);
stevew817 0:9d3739ba3237 40 segmentDisplay.Number(clockValue);
stevew817 0:9d3739ba3237 41 segmentDisplay.Symbol(LCD_SYMBOL_COL10, seconds & 0x1);
stevew817 0:9d3739ba3237 42 }
stevew817 0:9d3739ba3237 43
stevew817 0:9d3739ba3237 44 /**
stevew817 0:9d3739ba3237 45 * Callback for touching/untouching the cap slider
stevew817 0:9d3739ba3237 46 */
stevew817 0:9d3739ba3237 47 void touchCallback(void) {
stevew817 0:9d3739ba3237 48 segmentDisplay.Symbol(LCD_SYMBOL_EFM32, capSlider.isTouched());
stevew817 0:9d3739ba3237 49
stevew817 0:9d3739ba3237 50 if(!capSlider.isTouched()) {
stevew817 0:9d3739ba3237 51 segmentDisplay.Write("Hello");
stevew817 0:9d3739ba3237 52 }
stevew817 0:9d3739ba3237 53 }
stevew817 0:9d3739ba3237 54
stevew817 0:9d3739ba3237 55 /**
stevew817 0:9d3739ba3237 56 * Callback for sliding the cap slider
stevew817 0:9d3739ba3237 57 */
stevew817 0:9d3739ba3237 58 void slideCallback(void) {
stevew817 0:9d3739ba3237 59 segmentDisplay.LowerNumber(capSlider.get_position());
stevew817 0:9d3739ba3237 60 }
stevew817 0:9d3739ba3237 61
stevew817 0:9d3739ba3237 62 /*************************** MAIN *******************************/
stevew817 0:9d3739ba3237 63 int main() {
stevew817 0:9d3739ba3237 64 // Initialize pushbutton handler
stevew817 0:9d3739ba3237 65 in.rise(NULL);
stevew817 0:9d3739ba3237 66 in.fall(in_handler);
stevew817 0:9d3739ba3237 67
stevew817 0:9d3739ba3237 68 // Enable the capacitive slider
stevew817 0:9d3739ba3237 69 capSlider.start();
stevew817 0:9d3739ba3237 70 capSlider.attach_touch(touchCallback);
stevew817 0:9d3739ba3237 71 capSlider.attach_untouch(touchCallback);
stevew817 0:9d3739ba3237 72 capSlider.attach_slide(-1, slideCallback);
stevew817 0:9d3739ba3237 73
stevew817 0:9d3739ba3237 74 // Start generating the 1Hz timebase
stevew817 0:9d3739ba3237 75 refreshTicker.attach(&tickerCallback, 1.0f);
stevew817 0:9d3739ba3237 76
stevew817 0:9d3739ba3237 77 printf("Initialization done! \n");
stevew817 6:c392ed815942 78 wait(0.01f); //Need to delay slightly to give the serial transmission a chance to flush out its buffer
stevew817 0:9d3739ba3237 79 segmentDisplay.Write("Hello");
stevew817 0:9d3739ba3237 80
stevew817 0:9d3739ba3237 81 // Go into sleeping mode
stevew817 0:9d3739ba3237 82 while(1)
stevew817 0:9d3739ba3237 83 {
stevew817 0:9d3739ba3237 84 sleep();
stevew817 0:9d3739ba3237 85 if(count >= 8) {
stevew817 7:1e0a14ce9ca1 86 // Go to 'completely dead' mode to show power consumption
stevew817 0:9d3739ba3237 87 refreshTicker.detach();
stevew817 0:9d3739ba3237 88 capSlider.stop();
stevew817 0:9d3739ba3237 89 in.disable_irq();
stevew817 0:9d3739ba3237 90 delete &segmentDisplay;
stevew817 0:9d3739ba3237 91 }
stevew817 0:9d3739ba3237 92 }
stevew817 0:9d3739ba3237 93 }
stevew817 0:9d3739ba3237 94