Hallo,
ich habe mir vom MSC Elekronic einen Beispielcode für die Ansteuerung eines LCD Displays (4*20) besorgt.
Leider bekomme ich es nicht zu laufen. Kennt ihr das Problem?
Ich habe den Code, den ich etwas modifizieren musste mal angehängt:
Code:
'LCD Testanzeige
$regfile = "m8def.dat"
$crystal = 7372800
$baud = 4800
Config Lcd = 20 * 4 'LCD-Display mit 20 Zeichen in 4 Zeilen verwendet
Config Lcdbus = 4 '4 bit mode
Config Lcdmode = Port
Config Lcdpin = Pin , Db4 = Portc.1 , Db5 = Portc.2 , Db6 = Portc.3 , Db7 = Portc.4 , E = Portc.5 , Rs = Portd.6 'war Portc.6
Deflcdchar 0 , 7 , 5 , 7 , 32 , 32 , 32 , 32 , 32
Deflcdchar 1 , 10 , 32 , 14 , 17 , 17 , 17 , 14 , 32
Dim A As Byte
Cls 'clear the LCD display
Lcd "Hello world." 'display this at the top line
Wait 1
Lowerline 'select the lower line
Wait 1
Lcd "Shift this." 'display this at the lower line
Wait 1
For A = 1 To 10
Shiftlcd Right 'shift the text to the right
Wait 1 'wait a moment
Next
For A = 1 To 10
Shiftlcd Left 'shift the text to the left
Wait 1 'wait a moment
Next
Locate 2 , 1 'set cursor position
Lcd "*" 'display this
Wait 1 'wait a moment
Shiftcursor Right 'shift the cursor
Lcd "@" 'display this
Wait 1 'wait a moment
Home Upper 'select line 1 and return home
Lcd "Replaced." 'replace the text
Wait 1 'wait a moment
Cursor Off Noblink 'hide cursor
Wait 1 'wait a moment
Cursor On Blink 'show cursor
Wait 1 'wait a moment
Display Off 'turn display off
Wait 1 'wait a moment
Display On 'turn display on
'-----------------NEW support for 4-line LCD------
Thirdline
Lcd "Line 3"
Fourthline
Lcd "Line 4"
Home Third 'goto home on line three
Home Fourth
Home F 'first letteer also works
Locate 4 , 1 : Lcd "Line 4"
Wait 1
Deflcdchar 1 , 225 , 227 , 226 , 226 , 226 , 242 , 234 , 228 ' replace ? with number (0-7)
Deflcdchar 0 , 240 , 224 , 224 , 255 , 254 , 252 , 248 , 240 ' replace ? with number (0-7)
Cls 'select data RAM
Rem it is important that a CLS is following the deflcdchar statements because it will set the controller back in datamode
Lcd Chr(0) ; Chr(1) 'print the special character
'----------------- Now use an internal routine ------------
_temp1 = 1 'value into ACC
!rCall _write_lcd 'put it on LCD
End
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