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Topic: Liquid Crystal Library (Read 1 time) previous topic - next topic


I am somewhat new to this so sorry if this is kind of dumb. I am having a bit of a problem. I am trying to use the Liquid Crystal library. I copied the code from the website under this tutorial and tried to compile it. When I do I get the following:

LiquidCrystal.cpp:8: error: declaration of C function 'void pinMode(int, int)' c
onflicts with
C:/arduino-0009/lib/targets/arduino/wiring.h:74: error: previous declaration 'vo
id pinMode(uint8_t, uint8_t)' here
LiquidCrystal.cpp:9: error: declaration of C function 'void digitalWrite(int, in
t)' conflicts with
C:/arduino-0009/lib/targets/arduino/wiring.h:75: error: previous declaration 'vo
id digitalWrite(uint8_t, uint8_t)' here
LiquidCrystal.cpp:10: error: declaration of C function 'int digitalRead(int)' co
nflicts with
C:/arduino-0009/lib/targets/arduino/wiring.h:76: error: previous declaration 'in
t digitalRead(uint8_t)' here
o: In function `setup':
undefined reference to `LiquidCrystal::init()'o: In function `__static_initializ
ation_and_destruction_0(int, int)':

Can anyone help


Sep 14, 2007, 05:33 pm Last Edit: Sep 14, 2007, 05:38 pm by imagitronics Reason: 1
Open LiquidCrystal.cpp and modify the following lines:

Code: [Select]
extern void pinMode(int, int);
extern void digitalWrite(int, int);
extern int digitalRead(int);


Code: [Select]
extern void pinMode(uint8_t, uint8_t);
extern void digitalWrite(uint8_t, uint8_t);
extern int digitalRead(uint8_t);

I just tried it, and it worked for me.

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