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glcd problem using 18f452 and ds1307

 
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isidur



Joined: 13 Feb 2008
Posts: 2

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glcd problem using 18f452 and ds1307
PostPosted: Thu Mar 13, 2008 12:03 am     Reply with quote
write program I used glcd and ds1307 and I convert from numbers to string and if number increase 10 and string numbers mixed and simulate proteus below write a code;

Code:

ds1307_get_time(hr,min,sec);
sprintf(hour_s,"%d",hr);
sprintf(min_s,"%d",min);
sprintf(sec_s,"%d",sec);
delay_ms(5);
//*********************** display glcd ******************************************
glcd_text57(10,3,text1,1,ON);
glcd_text57(1,15,text2,1,ON);
glcd_text57(32,15,text8,1,ON);
glcd_text57(65,15,text3,1,ON);
glcd_text57(90,15,text9,1,ON);
glcd_text57(10,25,text4,1,ON);
glcd_text57(45,25,hour_s,1,ON);
glcd_text57(58,25,text10,1,ON);
glcd_text57(65,25,min_s,1,ON);
glcd_text57(78,25,text10,1,ON);
glcd_text57(85,25,sec_s,1,ON);
glcd_text57(10,35,text11,1,ON);
glcd_text57(1,45,text6,1,ON);
glcd_text57(52,45,text7,1,ON);
glcd_text57(45,55,text12,1,ON);

and show a photos first photo is error photo

second photo minutes value is lower than ten number(correct working)
Douglas Kennedy



Joined: 07 Sep 2003
Posts: 755
Location: Florida

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PostPosted: Thu Mar 13, 2008 12:15 am     Reply with quote
If you aren't aware the the DS1307 time date registers are in BCD or if you are aware and you haven't made that adjustment in the DS1307_get_time then the time and date are in bcd but you are using them as if they were decimal. Now that means bcd values that don't flow into the higher nibble( i.e values less than ten) will work others will not.
Your output looks even worse than I would expect if you left out BCD to decimal conversion so this may not be the answer.
isidur



Joined: 13 Feb 2008
Posts: 2

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PostPosted: Thu Mar 13, 2008 11:52 am     Reply with quote
DS1307_get_time converted BCD to integer and but I expect sprintf function(integer convert to string) is not correct working because others number(adjust time and date function) same mistake
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