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Old 10-01-2011, 02:11 PM   #1
Radiolocman Robot
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Default Discussion: Heart rate measurement from fingertip. Part 2. Software

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Part 1. Schematic Software The firmware does all the control and computation operation.
More: Heart rate measurement from fingertip. Part 2. Software
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Old 10-01-2011, 02:11 PM   #2
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in the heart sensor cct pin no 5 of 16f628 is meant for vss(-). it is again shown +5v
through10k resistance to pin no 5. please clarify.
thanking you
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Old 10-11-2011, 08:45 PM   #3
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"Clear" button should be connected to pin 4 of PIC18F628 (MCLR). I think, The schematic will be fixed soon...
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Old 03-25-2012, 10:48 AM   #4
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Hey i am doing the same project using AT89C51. Can u please send me the code for that? in C language . Mi id is : niklimaye@yahoo.co.in
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Old 03-27-2012, 06:23 AM   #5
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dear nikl plz make open everything and here is software
unsigned int counter1=0;//counter2=0;
unsigned long freq=0,counter2=0,tx=0;
unsigned char ei=0,test=0;
unsigned char op[13],lcd[13],j=0,i=0,k=0;
unsigned float efreq=0;
void lcd_out1()
{
k++;
freq=(counter2*256+counter1+5)*2;
//if(freq!=0)
efreq=1000000/freq;
tx=efreq*60;
usart_write(tx);
//lcd_chr(3,1,test+48);
}
void interrupt(void)
{
if(INTCON.INTF)/////EXTERNAL INTERRUPT
{
ei++;
INTCON.INTF=0;
test++;
if(ei==1)
{
// lcd_out(2,1," );
tmr0=0;
counter2=0;
intcon.f5=1;////////start timer
}
else if(ei==2)
{
ei=0;
intcon.f5=0;////stop timer
counter1=tmr0;

intcon.gie=0;
lcd_out1();
intcon.gie=1;
}
}
if (INTCON.TMR0IF)//////timer interrupt
{
counter2++;
TMR0 = 0;
INTCON.TMR0IF = 0;

}

}
void main(void)
{
//trisb=0xff;
trisb.f0=1;
//intcon=0x10;/////global interrupt enabled
option_reg=0x80;
option_reg.f6=1;///interrupt on rising edge
//trisc=0;
//lcd_init(&portc);
//lcd_config(&portc,0,2,1,7,6,5,4);
usart_init(9600);
INTCON = 0xb4;
intcon.f5=0;////////start timer
for(;
{
}
}
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Old 03-28-2012, 03:36 PM   #6
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Hey thanks a lot... Could you please send me the assembly program as well .. thanks
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Old 04-08-2012, 02:09 PM   #7
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We are using a power supply which converts 230V AC to 5V DC .. CAn you please tell the current rating of the secondary of the transformer ASAP!
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Old 03-18-2015, 01:23 PM   #8
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hello,
i'm doing the same project but using PIC16f877a and in place of 7-segment i'm going to use lcd .can anyone plz explain me how the PIC microcontroller counts the pulses?
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Old 03-26-2015, 10:16 AM   #9
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Use external interrupt int. The number of Ismaylov for 1 second and will be the frequency...
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Old 05-19-2015, 07:40 PM   #10
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hii
can u please send me the code for pic16f877a at my email id ansari_shaherbano@yahoo.com
in place of seven segment display i'm using lcd....
please help me....
thanks
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