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Title: Help Needed For AT89C2051 Post by: sureshsharma2032 on July 01, 2010, 11:35:50 11:35 Hi to all, I am a beginner in microcontrollers & c compiler programs. By a guided book of " Microcontoller Projects in C for 8051" . I am building my first project but I am having errors. I have attached all the files. I have compiled it in Keil uvision 3. Pls can anyone help me out to get the program working.
Any help would be really appreciated. I am having this error in Keil : Build target 'Target 1' compiling LED Binary Counter.c... LED BINARY COUNTER.C(1): warning C500: LICENSE ERROR (R208: RENEW LICENSE ID CODE (LIC)) LED BINARY COUNTER.C(29): warning C206: 'wait_a_sec': missing function-prototype linking... *** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS SEGMENT: ?PR?WAIT_A_SECOND?LED_BINARY_COUNTER *** WARNING L1: UNRESOLVED EXTERNAL SYMBOL SYMBOL: WAIT_A_SEC MODULE: LED Binary Counter.obj (LED_BINARY_COUNTER) *** WARNING L2: REFERENCE MADE TO UNRESOLVED EXTERNAL SYMBOL: WAIT_A_SEC MODULE: LED Binary Counter.obj (LED_BINARY_COUNTER) ADDRESS: 082EH Program Size: data=11.0 xdata=0 code=87 creating hex file from "LED Binary Counter"... "LED Binary Counter" - 0 Error(s), 5 Warning(s). Title: Re: Help Needed For AT89C2051 Post by: zuisti on July 01, 2010, 12:10:52 12:10 Hi;
I don't working with Keil compilers, but as I see: You have a function declared at begin: /* Function to delay about a second */ void wait_a_second() { unsigned int x; for(x=0;x<33000;x++); } and you try using this: wait_a_sec(); /*Wait about a second*/ This name-missing will be your problem I think. Try it! Cheers zuisti Title: Re: Help Needed For AT89C2051 Post by: chinninitin on July 05, 2010, 10:07:53 10:07 Hi,
It seems that there are two problems 1) License problem that you have to reslove ;-) 2) Code: here is corrected code, you just made mistake in calling and declaring function name ...sec() and ...second() #include <AT892051.h> /* Function to delay about a second */ void wait_a_sec() { unsigned int x; for(x=0;x<33000;x++); } /* Start of main program */ main() { int LED=1; /*initialize count to 1*/ for( ; ; ) /*Start of endless loop*/ { P1=~LED; /*Invert and output*/ LED++; /*Increment the count*/ wait_a_sec(); /*Wait about a second*/ } } Regards Chinni Title: Re: Help Needed For AT89C2051 Post by: rentau on July 06, 2010, 02:41:23 02:41 about evaluation, your using 2051, soo you shouldn't have any problem, as with 2k limit, re-install your kiel.
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