segmentlcd.c File Reference

Detailed Description

EFM32 Segment LCD Display driver.

Version

5.1.1

License

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 segmentlcd.c.

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdbool.h>
#include "em_device.h"
#include "em_cmu.h"
#include "em_gpio.h"
#include "segmentlcd.h"

Go to the source code of this file.

Data Structures
struct	ARING_TypeDef
	Defines segment COM and BIT fields for A-wheel (suited for Anim) More...
struct	BATTERY_TypeDef
	Defines segment COM and BIT fields for Battery (suited for Anim) More...
struct	Block_TypeDef
	Defines segment COM and BIT fields for top and bottom row blocks. The bit pattern shown above for characters can be split into upper and lower portions for animation purposes. There are separate COM and BIT numbers which together represent a set of stacked blocks which can be shown on two rows in the segmented LCD screen. More...
struct	CHAR_TypeDef
	Defines each text symbol's segment in terms of COM and BIT numbers, in a way that we can enumerate each bit for each text segment in the following bit pattern: More...
struct	EM_TypeDef
	Defines segment COM and BIT fields for Energy Modes on display. More...
struct	MCU_DISPLAY
	Defines prototype for all segments in display. More...
struct	NUMBER_TypeDef
	Defines segment COM and BIT fields numeric display. More...

Functions
static void	displayBlock (SegmentLCD_BlockMode_TypeDef topMode[SEGMENT_LCD_NUM_BLOCK_COLUMNS], SegmentLCD_BlockMode_TypeDef botMode[SEGMENT_LCD_NUM_BLOCK_COLUMNS])
	Working instance of LCD display.
void	SegmentLCD_AllOff (void)
	Disable all segments.
void	SegmentLCD_AllOn (void)
	Enable all segments.
void	SegmentLCD_AlphaNumberOff (void)
	Turn all segments on alpha characters in display off.
void	SegmentLCD_ARing (int anum, int on)
	Light up or shut off Ring of Indicators. More...
void	SegmentLCD_Battery (int batteryLevel)
	Light up or shut off Battery Indicator. More...
void	SegmentLCD_Block (SegmentLCD_BlockMode_TypeDef topMode[SEGMENT_LCD_NUM_BLOCK_COLUMNS], SegmentLCD_BlockMode_TypeDef botMode[SEGMENT_LCD_NUM_BLOCK_COLUMNS])
void	SegmentLCD_Disable (void)
	Disables LCD controller.
void	SegmentLCD_EnergyMode (int em, int on)
	Light up or shut off Energy Mode indicator. More...
void	SegmentLCD_Init (bool useBoost)
	Segment LCD Initialization routine for EFM32 STK display. More...
void	SegmentLCD_LowerHex (uint32_t num)
	Write a hexadecimal number on lower alphanumeric part of Segment LCD display. More...
void	SegmentLCD_LowerNumber (int num)
	Write number on lower alphanumeric part of Segment LCD display. More...
void	SegmentLCD_Number (int value)
	Write number on numeric part on Segment LCD display. More...
void	SegmentLCD_NumberOff (void)
	Turn all segments on numeric digits in display off.
void	SegmentLCD_Symbol (lcdSymbol s, int on)
	Light up or shut off various symbols on Segment LCD. More...
void	SegmentLCD_UnsignedHex (uint16_t value)
	Write hexadecimal number on numeric part on Segment LCD display. More...
void	SegmentLCD_Write (const char *string)
	Write text on LCD display. More...

Variables
static const uint16_t	Blocks []
	Defines highlighted segments for the block display. More...
static const uint16_t	EFM_Alphabet []
	Defines higlighted segments for the alphabet, starting from "blank" (SPACE) Uses bit pattern as defined for text segments above. E.g. a capital O, would have bits 0 1 2 3 4 5 => 0x003f defined.
static const MCU_DISPLAY	EFM_Display = EFM_DISPLAY_DEF
	Working instance of LCD display.
static const uint16_t	EFM_Numbers []
	Defines higlighted segments for the numeric display. More...

Variable Documentation

const uint16_t Blocks[]

static

Initial value:

= {
  0x0000, 
  0x00E0, 
  0x001F, 
  0x00FF  
}

Defines highlighted segments for the block display.

Definition at line 300 of file segmentlcd.c.

Referenced by displayBlock().

const uint16_t EFM_Numbers[]

static

Initial value:

= {
  0x003f, 
  0x0006, 
  0x005b, 
  0x004f, 
  0x0066, 
  0x006d, 
  0x007d, 
  0x0007, 
  0x007f, 
  0x006f, 
  0x0077, 
  0x007c, 
  0x0039, 
  0x005e, 
  0x0079, 
  0x0071, 
  0x0040  
}

Defines higlighted segments for the numeric display.

Definition at line 276 of file segmentlcd.c.

Referenced by SegmentLCD_Number(), and SegmentLCD_UnsignedHex().