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Want of Night Saver Project

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Moderators: Ajay, Junied , abbas1707, Arun Kumar V, pdi33, Shailesh NAYAK, ۞ TPS ۞, shyam, sashijoseph

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Shezo

Mon Dec 01 2008, 08:20PM

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thankxx Arun...i will start working on tht project...thnx alot

..............shezo..............

Shezo

Mon Dec 29 2008, 12:02AM

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yaar arun am realy in big tension..i cant understand single word of programing wic is used in the project wic u given me...plzz help me outt

..............shezo..............

Arun Kumar V

Mon Dec 29 2008, 05:23AM

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Joined: Sun Jan 28 2007, 11:50PM

Posts: 522
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Hello Shezo,

which programming Language are you familiar with: C or Assembly ?, Prof.wichit sirichote's most of the programs are in C and that too compiled in SDCC not Keil.

Arun

Shezo

Mon Dec 29 2008, 08:59PM

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am familiar wid C and assembly both but tis prog is not understandable..

..............shezo..............

Arun Kumar V

Tue Dec 30 2008, 05:39AM

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Posts: 522
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am familiar wid C and assembly both but tis prog is not understandable..

can you be more specific..... what is it that you are not understanding ? the algorithm or how to compile the source code in SDCC ?

hex file is not given in prof.sirichote's project/s. you have to compile it yourself.

Arun

Shezo

Tue Dec 30 2008, 10:01AM

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i need a full tutorial on ds1307...i searched alot at net but its not sufficient to understand all about this ic

..............shezo..............

pdi33

Tue Dec 30 2008, 11:21AM

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Joined: Mon Jun 04 2007, 09:28AM

Posts: 773
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i would suggest u first understand the basics of i2c protocol which is used by the DS1307 for communication ( u will find tutorials for it easily on the net). Then look into the datasheet of the IC for various memory registers and how to implement the i2c to read/write in them. As a reference for coding, u can check the download section for clock related projects which use this IC for timekeeping.

* inspired to develop,developing to inspire *

Shezo

Wed Dec 31 2008, 12:35AM

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well sir ma frnd was asking abt tht IC......

..............shezo..............

Shezo

Wed Dec 31 2008, 12:36AM

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scan_pgm()
{
char i;
for(i=0; i<4; i++)
{
if(hour == pgm1[i] && min == pgm1[i])
P1 = ~pgm1[i];
}
}

control_output()
{
if(hour == time_on1[0] && min == time_on1[1])
status = 0;
if(hour == time_off1[0] && min == time_off1[1])
status = 1;
}

blink_led()
{
if(flag1&1)
{
if(++timer1>1)
{
flag1 &= ~1; // clear flag1.0
timer1=0;
LED = 1; // turns off led
}
}
}

void time ()
/* update real-time clock */
{
if (++sec10 >= 10) /* 100ms * 10 = 1 s */
{
LED = 0;
control_output(); // control output every second
sec10 = 0;
flag1 |=1;
if (++sec >= 60)
{sec = 0;
if (++min >= 60)
{min = 0;
if (++hour >= 24)
{hour = 0;

}
}
}
}
}

set_time()
{
if((P3&4)==0)
{
status = 0;
hour = 18;
min = 0;
sec = 0;
timer2=0;
}
}

update_output()
{
if(status) output1 = 1;
else output1 =0; // update output bit
}

void timer_isr(void) interrupt 1 using 1
{
TH0 = 0x8b;
TL0 = 0x7f; // reload with 35711 for 10Hz
tick++;
tick_test ^= 1; // test tick for 10Hz/2 or 5Hz
time();
set_time();
blink_led();
update_output();
}

..............shezo..............