Poll
Question:
How to print value from variables
Option 1: Extra code for each program to use with
votes: 0
Option 2: Library upgrade
votes: 1
Dear all,
I am newbie on this forum and would like to say hello to everybody.
I would like to ask you if is some body who can help me with fixing trouble using LCD16x2 library for Shield-LCD16x2.
https://www.olimex.com/Products/Duino/Shields/SHIELD-LCD16x2/open-source-hardware
I tried all to print value on the display but I'm able to print text/string betwen "" only.
When I am using standard shield like from SparkFun or other with LiquidCristal library I am normaly write in code :lcd.print("Hello word") >> display show test "Hello word"
code :lcd.print(value) >> display show number which is store vairable "value".
When using Olimex Shield-LCD16x2 than I am not able to do the same.
code: lcd.lcdWrite("Hello word") >> display will show Text "Hello word"
code: lcd.lcdWrite(value) >> compiler break on error "invalid conversion from 'int' to 'char*'
Some body have idea to solve this?
I made function to decode values digits and then print (write) on requested cursor position, but it is extra code which is not needed when using standard paralel display control and reading of analog buttons value.
Thanks for help.
Hi
I just bought the 16x2 from olimex in order to lern how to hande lcd stuff now i´m stuck with this Library from Olimex too and its laggs evrerything the display uses the same hitachi then other arduino shields but another pic (or is there a chance to get other firmware on the pic?)
16x2 Olimex these are the commands possible by the firmware
#define SET_TRIS 0x01
#define SET_LAT 0x02
#define GET_PORT 0x03
#define GET_BUT 0x05
#define GET_ID 0x20
#define GET_FRM 0x21
#define LCD_CLR 0x60
#define LCD_WR 0x61
#define SET_BL 0x62
#define UART_EN 0x10
#define BOARD_ID 0x65
#define ADDRESS 0x30
wich then ends in these "commands" made in the library from olimex
getID KEYWORD2
getFirmwareVersion KEYWORD2
uartEnable KEYWORD2
pinMode KEYWORD2
digitalWrite KEYWORD2
digitalRead KEYWORD2
readButtons KEYWORD2
lcdClear KEYWORD2
lcdGoToXY KEYWORD2
lcdWrite KEYWORD2
lcdSetBlacklight KEYWORD2
wow 11 total different keywords that are different from everything else in the community >:(
This here is the Arduino lcdshield pic firmware wich will never run on this 16x2 :'(
#define LCD_CLEARDISPLAY 0x01
#define LCD_RETURNHOME 0x02
#define LCD_ENTRYMODESET 0x04
#define LCD_DISPLAYCONTROL 0x08
#define LCD_CURSORSHIFT 0x10
#define LCD_FUNCTIONSET 0x20
#define LCD_SETCGRAMADDR 0x40
#define LCD_SETDDRAMADDR 0x80
// flags for display entry mode
// ---------------------------------------------------------------------------
#define LCD_ENTRYRIGHT 0x00
#define LCD_ENTRYLEFT 0x02
#define LCD_ENTRYSHIFTINCREMENT 0x01
#define LCD_ENTRYSHIFTDECREMENT 0x00
// flags for display on/off and cursor control
// ---------------------------------------------------------------------------
#define LCD_DISPLAYON 0x04
#define LCD_DISPLAYOFF 0x00
#define LCD_CURSORON 0x02
#define LCD_CURSOROFF 0x00
#define LCD_BLINKON 0x01
#define LCD_BLINKOFF 0x00
// flags for display/cursor shift
// ---------------------------------------------------------------------------
#define LCD_DISPLAYMOVE 0x08
#define LCD_CURSORMOVE 0x00
#define LCD_MOVERIGHT 0x04
#define LCD_MOVELEFT 0x00
// flags for function set
// ---------------------------------------------------------------------------
#define LCD_8BITMODE 0x10
#define LCD_4BITMODE 0x00
#define LCD_2LINE 0x08
#define LCD_1LINE 0x00
#define LCD_5x10DOTS 0x04
#define LCD_5x8DOTS 0x00
// Define COMMAND and DATA LCD Rs (used by send method).
// ---------------------------------------------------------------------------
#define COMMAND 0
#define DATA 1
#define FOUR_BITS 2
/*!
@defined
@abstract Defines the duration of the home and clear commands
@discussion This constant defines the time it takes for the home and clear
commands in the LCD - Time in microseconds.
*/
#define HOME_CLEAR_EXEC 2000
/*!
@defined
@abstract Backlight off constant declaration
@discussion Used in combination with the setBacklight to swith off the
LCD backlight. @set setBacklight
*/
#define BACKLIGHT_OFF 0
/*!
@defined
@abstract Backlight on constant declaration
@discussion Used in combination with the setBacklight to swith on the
LCD backlight. @set setBacklight
*/
#define BACKLIGHT_ON 255
wich then ends in these "commands" by library ->>>>>>> :o
LiquidCrystal_SR KEYWORD1
LiquidCrystal_I2C KEYWORD1 :-*
LiquidCrystal_SR3W KEYWORD1
LiquidCrystal KEYWORD1
LCD KEYWORD1
###########################################
# Methods and Functions (KEYWORD2)
###########################################
begin KEYWORD2
clear KEYWORD2
home KEYWORD2
noDisplay KEYWORD2
display KEYWORD2
noBlink KEYWORD2
blink KEYWORD2 8)
noCursor KEYWORD2
cursor KEYWORD2
scrollDisplayLeft KEYWORD2 8)
scrollDisplayRight KEYWORD2
leftToRight KEYWORD2
rightToLeft KEYWORD2
moveCursorLeft KEYWORD2
moveCursorRight KEYWORD2
autoscroll KEYWORD2
noAutoscroll KEYWORD2
createChar KEYWORD2
setCursor KEYWORD2
print KEYWORD2 :-*
write KEYWORD2
println KEYWORD2
backlight KEYWORD2
noBacklight KEYWORD2
on KEYWORD2
off KEYWORD2
setBacklightPin KEYWORD2
setBacklight KEYWORD2
###########################################
# Constants (LITERAL1)
###########################################
POSITIVE LITERAL1
NEGATIVE LITERAL1
BACKLIGHT_ON LITERAL1
BACKLIGHT_OFF LITERAL1
So i just paid 21eur for a display wich is mor or less useless for me since no one is comming up with a new firmware and library or get the firmware from the other pic thats in the orig.arduino shields on the olimex16x2 pic running !!! :'(
Please Olimex Team your Support is needed !!!
sry for the bad english and thx for reading....... :-X
Having the same issue here... I would really enjoy a simple solution for it, as I don't have time to write my own library right now.
If anybody has an answer, please post it.
Recently we updated the LCD16x2 library which added 2 overloaded lcdWrite functions to display integer and float numbers (thanks to Andrey Chevykalov for the update). So check it out: https://www.olimex.com/Products/Duino/Shields/SHIELD-LCD16x2/open-source-hardware