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leejok2003
Joined: 25 Dec 2008
Posts: 32
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| need help for TCPIP+CCP1... |
 Posted: Sat Jan 31, 2009 3:56 am |
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Hi,
I am working with my final year project which monitors heartbeat (using CCP1 to capture the pulse) through Ethernet. When i load the program into the PIC (both TCPIP stack and CCP1 are in the same program), it seems that no interrupt was detected but if the TCPIP stack is removed, the heartbeat program seems ok. Can anyone give some idea on this? Thank you very much |
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dyeatman
Joined: 06 Sep 2003
Posts: 1933
Location: Norman, OK
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| Posted: Sat Jan 31, 2009 11:20 am |
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The question you are asking is the equivalent of:
" If I add an accessory to my car the car doesn't work any more, why not?"
Without knowing the car type, the accessory and how it was installed you wouldn't have a CLUE as to what the problem is. The same is true here... |
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leejok2003
Joined: 25 Dec 2008
Posts: 32
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| Posted: Sat Jan 31, 2009 11:47 am |
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| well, i am using PIC18F4620+ENC28J60 for the ethernet connection, and for the pulse reading, i use the same PIC and uses timer1+CCP1 function to capture the pulse. |
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dyeatman
Joined: 06 Sep 2003
Posts: 1933
Location: Norman, OK
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| Posted: Sat Jan 31, 2009 1:54 pm |
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OK, great.
Now we need to see some code to determine how the two functions affect each other. What do you mean by:
| Quote: | | both TCPIP stack and CCP1 are in the same program |
Later you say:
| Quote: | | if the TCPIP stack is removed, the heartbeat program seems ok |
So apparently the TCPIP, Timer1 and CCP1 code are separate.
Show your main program with all the setup lines, include lines and complete ISR routine(s). Are you using someone elses code? If so can you provide a link to see what you are working with? Do not show the TCP/IP stack code. |
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leejok2003
Joined: 25 Dec 2008
Posts: 32
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| Posted: Sat Jan 31, 2009 9:23 pm |
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Hi,
Sorry for my poor english... What i want to mean is that actually i write the code for CCP1+timer1 separately from the TCPIP stack initially to read pulses. This code (CCP1+timer1) works fine for reading pulses.
Then i include CCP1+timer1 code into the TCPIP stack code, which i plan to read pulses through ethernet, and this one doesn't work... Bellow is the code combine the TCPIP and the CCP1+timer1:
| Code: |
#define STACK_USE_ICMP 1
#define STACK_USE_ARP 1
#define STACK_USE_TCP 1
#define STACK_USE_HTTP 1
#include "ccstcpip.h"
#if STACK_USE_CCS_PICENS
#include "tcpip/mlcd.c"
#else
#include "tcpip/dlcd.c"
#endif
int sta1,sta2,sta3,pus,count,det;
int1 ccp_updated=FALSE;
unsigned int32 over, start_time, end_time,width,time1,t_time,heart,time2;
#INT_TIMER1
TIMER1_isr()
{
over = over + 1;
}
#INT_CCP1
CCP1_isr()
{
end_time = CCP_1;
ccp_updated = TRUE;
det=1;
//printf("\r\n det= %d",det);
}
//here is this examples / page
const char HTML_INDEX_PAGE[]="
<HTML>
<HEAD>
<META HTTP-EQUIV=REFRESH CONTENT=8>
<\HEAD>
<TITLE>Patient Monitoring Page</TITLE>
<BODY BGCOLOR=#ADD8E6 TEXT=#000000>
<H1 align= center>Patient Monitoring System Beta 1.0b</H1>
<HR>
<BR><I>This is a prototype which uses " in code" html page edit.</I>
<FORM METHOD=GET>
<BR>LED1:<INPUT type=\"radio\" name=\"led1\" value=1>ON
<INPUT type=\"radio\" name=\"led1\" value=0 checked>OFF
<BR>LED2:<INPUT type=\"radio\" name=\"led2\" value=1>ON
<INPUT type=\"radio\" name=\"led2\" value=0 checked>OFF
<BR><INPUT TYPE=\"submit\"></FORM>
</P>
<P>
<H3>STATUS</H3>
<TABLE WIDTH=100% BORDER-STYLE: BORDER >
<TR>
<TD>
BTN1=%4
</TD>
</TR>
<TR>
<TD>
BTN2=%5
</TD>
</TR>
<TR>
<TD>
LED1=%2
</TD>
</TR>
<TR>
<TD>
LED2=%3
</TD>
</TR>
</TABLE>
</P>
<DIV>
<H2>Body</H2>
<TABLE>
<TR>
<TD>
Heartbeat: %7 BPM
</TD>
</TR>
<TR>
<TD>
Temperature=<B>%0 <\B>
</TD>
</TR>
<TR>
<TD>
Temperature Warning: %6
</TD>
</TR>
</TABLE>
</DIV>
<P ALIGN=LEFT><A HREF=\"/analog\">Analog Readings</A><\P>
</BODY></HTML>
";
const char HTML_ANALOG_PAGE[]="
<HTML><BODY BGCOLOR=#ADD8E6 TEXT=#000000>
<HEAD>
<META HTTP-EQUIV=REFRESH CONTENT=8>
</HEAD>
<H1>PICNET ADC READINGS</H1>
<TABLE>
<TR>
<TD>
<DIV>Temperature</DIV>
</TD>
<TD><DIV><B>%0 <\B><\DIV>
</TD>
</TR>
<TR>
<TD>
<TD>
</TR>
</TABLE>
<BR>%1
<P><A HREF=\"/\">Change LCD/LEDs</A>
</BODY></HTML>
";
//this is a callback function to the HTTP stack. see http.c
//this demo provides to web "pages", an index (/) and an about page (/about)
int32 http_get_page(char *file_str) {
int32 file_loc=0;
static char index[]="/";
static char about[]="/analog";
printf("\r\nRequest %s ",file_str);
if (stricmp(file_str,index)==0)
file_loc=label_address(HTML_INDEX_PAGE);
else if (stricmp(file_str,about)==0)
file_loc=label_address(HTML_ANALOG_PAGE);
if (file_loc)
printf("(FILE=%LU)",file_loc);
else
printf("(File Not Found)");
return(file_loc);
}
void heart_read(void)
{
while(ccp_updated==FALSE);
disable_interrupts(INT_TIMER1);
width= get_timer1();
time1=262140*over;
time2= width*4;
t_time=time1+time2;
heart= 600000000/t_time;
printf("\r\n heart= %lu",heart);
++count;
output_high(USER_LED5);
over = 0;//clear overflow counts
start_time = end_time; //end time of this pulse is the start time for the next one
ccp_updated= FALSE;
enable_interrupts(INT_TIMER1);
set_timer1(0);
//delay_ms(10);
}
void refresh()
{
printf("\r\n pus= %d",pus);
if(count==6)
pus=1;
}
void life()
{
output_high(USER_LED4);
output_low(USER_LED5);
delay_ms(60);
output_low(USER_LED4);
}
//this is a callback function to the HTTP stack. see http.c
// this demo provides handling for two formatting chars, %0 and %1.
// %0 is ADC for channel 0, %1 is ADC for channel 1.
/*
%0=AN0
%1=AN1
%2 - CHECKED if LED1 is ON
%3 - CHECKED if LED1 is OFF
%4 - CHECKED if LED2 is ON
%8 - CHECKED if LED2 is OFF
*/
int8 http_format_char(int32 file, char id, char *str, int8 max_ret) {
char new_str[20];
int8 len=0;
float i,temp,real_volt;
*str=0;
switch(id)
{
case '0':
set_adc_channel(0);
delay_us(100);
i=read_adc();
real_volt=((float)i/204.6);
temp= real_volt*100;
sprintf(new_str,"%1.1f",temp);
//printf("\r\n temperature= %1.1f",temp);
len=strlen(new_str);
break;
case '6':
if((temp<36.4)||(temp>37.6))
{
output_high(USER_LED3);
printf("\r\n Temperature Warning!\r\n");
}
sprintf(new_str,"<B>%D</B>",sta3);
len=strlen(new_str);
break;
#if defined(USER_BUTTON1)
case '4':
sprintf(new_str,"<B> </B>");
if (input(USER_BUTTON1))
sprintf(&new_str[3], "1");
else
sprintf(&new_str[3], "0");
len=strlen(new_str);
break;
#endif
#if defined(USER_BUTTON2)
case '5':
sprintf(new_str,"<B> </B>");
if (input(USER_BUTTON2))
{
sprintf(&new_str[3], "1");
enable_interrupts (INT_TIMER1); //unmask Timer1 overflow interrupt
enable_interrupts (INT_CCP1);
enable_interrupts (GLOBAL);
}
else
{sprintf(&new_str[3], "0");
disable_interrupts (INT_TIMER1);
disable_interrupts (INT_CCP1);
disable_interrupts (GLOBAL);
len=strlen(new_str);
}
break;
#endif
/*case '1':
#if STACK_USE_CCS_PICNET
set_adc_channel(1);
delay_us(100);
i=read_adc();
sprintf(new_str,"<B>AN1 = </B>0x%X",i);
len=strlen(new_str);
#else
len=0;
#endif
break;
*/
case '2':
sprintf(new_str,"<B>%D </B>",sta1);
len=strlen(new_str);
break;
case '3':
sprintf(new_str, "<B>%D </B>",sta2);
len=strlen(new_str);
break;
case '7':
if(det==1){
while(pus==0)
{
heart_read();
refresh();
sprintf(new_str,"<B>%U </B>",heart);
len=strlen(new_str);
}
count=0;
pus=0;
}
else
sprintf(new_str,"<B>0</B>");
len=strlen(new_str);
break;
}
if (len) {
if (len>max_ret) {len=max_ret;}
memcpy(str,new_str,len);
}
return(len);
}
//this is a callback function to the HTTP stack. see http.c
//in this example it verifies that "pwd" is "master", if it is
//then it sets led1 and led2 ("led1" and "led2") based on their value
//and changes the lcd screen ("lcd").
void http_exec_cgi(int32 file, char *key, char *val) {
static char led1_key[]="led1";
static char led2_key[]="led2";
static char led3_key[]="led3";
static char lcd_key[]="lcd";
int8 v;
printf("\r\nCGI FILE=%LD KEY=%S VAL=%S", file, key, val);
if (stricmp(key,led1_key)==0) {
v=atoi(val);
if (!v)
{output_low(USER_LED1);
sta1=0;}
else {output_high(USER_LED1);
sta1=1;}
}
if (stricmp(key,led2_key)==0) {
v=atoi(val);
if (!v)
{output_low(USER_LED2);
sta2=0;}
else {output_high(USER_LED2);
sta2=1;}
}
if (stricmp(key,led3_key)==0) {
v=atoi(val);
if (!v)
{output_low(USER_LED3);
sta3=0;}
else {output_high(USER_LED3);
sta2=1;}
}
if (stricmp(key,lcd_key)==0) {
printf(lcd_putc,"\f%s",val);
}
}
void main(void)
{
printf("\r\n Device Started");
MACAddrInit();
IPAddrInit();
init_user_io();
//lcd_init();
//printf(lcd_putc,"\fCCS CGI Example\nWaiting");
printf("\r\n\nPatient Monitoring...\r\nWaiting");
setup_adc_ports(AN0); // saluran 0 sbg input analog
setup_adc(ADC_CLOCK_DIV_64); // 20000000/625000 = 30.769 => 32
setup_ccp1 (CCP_CAPTURE_RE);
setup_timer_1 (T1_INTERNAL|T1_DIV_BY_2); //set timer1 to run at system clock / 4
StackInit();
while(TRUE) {
StackTask();
life();
}
}
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