I am not able to get the output of the program.

[Anoop]

Hi i am new to 8051 microcontroller and i am trying one of the project uploaded in this website. It is a simple progam to display a single character as A on the LCD screen.  I have compilled the code with the Keil uVisionr5 software and generated the .hex file. I am using the willar software to dump the program with the help of a programmer board which i purchased locally. The following is the link of the project. http://www.engineersgarage.com/microcontroller/8051projects/interface-lcd-at89c51-circuit. Please help me how to resolve this issue. Can anyone tel me how to get it working.

[Ashutosh Bhatt]

what is the problem?

[Anonymous]

hi anoop, 

          u didnt declare the sub-routines in the begining of the prgm. you should declare the sub-routine header following with semi colon.

 

ERROR:

void delay(unsigned int msec)

void lcdcmd(unsigned char item)

void lcddata(unsigned char item) 

CORRECT:

void delay(unsigned int msec);

void lcdcmd(unsigned char item);

void lcddata(unsigned char item);

Note: declare every sub-routine like this in the beginning of prgm after the port pins are defined.

 

[Author]

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