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leevise
Joined: 05 Aug 2010
Posts: 89
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| Timer0 and timer1 function (flag bit how to deal ) |
 Posted: Wed Dec 19, 2012 7:08 pm |
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Hello guys
I used the timer0 and timer1 as timer clock, but I use the PICC code. Now I need make it to CCS code, there are some questions when I translate the code.
1) how to open or close the Timer1 using CCS ? (PICC can control T1ON bit of T1CON register come true this function).
2) how to set two flags bit to timer0 and timer1 in CCS, as PICC TIM0IF and TIM1IF ?
the part of PICC code : | Code: |
*********timer0/timer init********/
void timer_init()
{
GIE=1;
PEIE=1;
T0CS=0;
PSA=0;
PS0=1;
PS1=1;
PS2=1; //1:256
T0IE=1;
TMR0=248; //2ms
T1CKPS0=1;T1CKPS1=1; //1:8
TMR1CS=0;
TMR1IE=1;
[B]TMR1ON=1; [/B]
TMR1H=0xfb; //10ms
TMR1L=0x1e; //
}
/********interrupt ********/
void interrupt ISR(void)
{
[B]if (TMR0IF==1)[/B]
{
TMR0IF=0;
TMR0=248; //TMR0 2ms
Display();
}
[B]if (TMR1IF==1)[/B]
{
TMR1IF=0; //
TMR1H=0xfb; //10ms
TMR1L=0x1e;
count_10ms++; //10ms+1
if(count_10ms >= 100)
{
count_10ms = 0; //
sec++; //sec+1
if(sec == 60)
{
sec = 0;
min++; //min+1
if(min ==60)
{
min = 0;
hour++; //hour+1
if(hour ==24)
{
hour = 0;min=0;sec=0;
}
}
}
}
}
}
/********Key********/
void KeyProcess()
{
TMR1ON=0; //press K1，T1 open
if(K2==0) //press K2
{
Delay_ms(10);
if(K2==0)
{
while(!K2); //wait K2 release
beep();
hour++; //adjust hour
if(hour==24)
{
hour = 0;
}
}
}
if(K3==0) //press K3
{
Delay_ms(10);
if(K3==0)
{
while(!K3); //K3 release
beep();
min++; //adjust min
if(min==60)
{
min = 0;
}
}
}
if(K4==0) //press K4
{
Delay_ms(10);
if(K4==0)
{
while(!K4); //waiting for K4 release
beep();
TMR1ON=1; //TI start
K1_FLAG=0; //flag=0
}
}
}
/********main********/
void main(void)
{
port_init();
timer_init();
while(1)
{
if(K1==0)
{
Delay_ms(10);
if(K1==0)
{
while(!K1);
K1_FLAG=1; }
}
if(K1_FLAG==1)KeyProcess();
conv(hour,min,sec);
}
}
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I translate the PICC code to CCS code as follow:
| Code: |
#int_timer0
void timer0_init()
{
static int flag;
if (flag==1)//(TMR0IF==1)
{
flag=0;//TMR0IF=0;
set_timer0(0xf8); //TMR0=248;
Display();
}
}
#int_timer1
void timer1_init()
{
static int flag;
if (flag==1)
{
[B] flag=0;// is this define process? [/B]
set_timer1(0xfb);
/*TMR1IF=0; //
TMR1H=0xfb; //
TMR1L=0x1e; //
*/
count_10ms=0;
count_10ms++;
if(count_10ms >= 100)
{
count_10ms = 0;
sec++;
if(sec == 60)
{
sec = 0;
min++;
if(min ==60)
{
min = 0;
hour++;
if(hour ==24)
{
hour = 0;min=0;sec=0;
}
}
}
}
}
}
/****************/
void KeyProcess()
{
setup_timeR_1(T1_DISABLED);//=0;
if(key1==0)
{
delay_ms(10);
if(key1==0)
{
while(!key1);
//beep();
hour++;
if(hour==24)
{
hour = 0;
}
}
}
if(key2==0)
{
delay_ms(10);
if(key2==0)
{
while(!key2);
//beep();
min++;
if(min==60)
{
min = 0;
}
}
}
if(key3==0)
{
delay_ms(10);
if(key3==0)
{
while(!key3);
//beep();
setup_timeR_1(T1_INTERNAL);
key0_FLAG=0;
}
}
}
/****************/
void main(void)
{
port_init();
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_256);
set_timer0(0xf8); //TMR0 2ms
setup_timer_1(T1_INTERNAL|T1_DIV_BY_8);
set_timer1(0xfb);
enable_interrupts(int_timer0);
enable_interrupts(int_timer1);
enable_interrupts(global);
while(1)
{
if(key0==0)
{
delay_ms(10);
if(key0==0)
{
while(!key0);
Key0_FLAG=1;
}
}
if(key0_FLAG==1)KeyProcess();
conv(hour,min,sec);
}
}
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pls explain me about these questions!
Thank you 
Last edited by leevise on Thu Dec 20, 2012 7:56 am; edited 1 time in total |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19504
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| Posted: Thu Dec 20, 2012 5:45 am |
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| Code: |
#int_timer0
void timer0_int() //Um. It is an interrupt, not an initialisation
{
//Er. If the interrupt is called, then TMR0IF, will always be set
//The compiler automatically clears it.
set_timer0(0xf8); //TMR0=248;
Display();
}
//Now, you don't show us 'Display'.
//Same basic layout for timer1, with a couple of extra point
//When you declare 'count_10msec', use:
int8 count_10mSec=0;
//This does the initialisation to zero, which you have put into the ISR...
#int_timer1
void timer1_int() {
set_timer1(0xFB1E); //you need both bytes - 16bit value...
//why are you then clearing count_10ms?. This does not happen in the
//assembler ISR. It needs to be where it is initialised.
etc...
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Comments:
The CCS msec delay function, is 'delay_ms', not 'Delay_ms'. This will cause problems if you switch to use case significant mode. You have similar case problems with 'setup_timeR_1' |
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leevise
Joined: 05 Aug 2010
Posts: 89
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| Posted: Thu Dec 20, 2012 7:47 am |
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I make a clock via segment display. The code was programed by PICC, but I want to translate to CCS code,there are some flag bit is used in PICC, but how to translating CCS code ? pls help me
about CCS code ,I found some one use the "sTatic int flag", is it not pre-define?there is a syntax "clear_interrupt(timer0)", maybe use this ?
oh my god ,I am very puzzle!
when used the TOMER0 and TIMER1, and we need 2 flag bit ,how to distinguish which is TOMER0' TOIF bit ,which one is the TIMER1' T1IF bit? , i am very puzzling
:
Another question: how to open or closed the TION by CCS code ? is it "setup_timer_1(T1_DISABLED);
and set_timer_1(xxxxxx)"?
| Code: |
#include<pic.h>
#define uchar unsigned char
#define uint unsigned int
__CONFIG(HS&WDTDIS&LVPDIS);
uchar hour=12,min=00,sec=00; //define hour, min ,second
uchar count_10ms; //define 10ms counter
#define K1 RB2 //define K1
#define K2 RB3 //define K2
#define K3 RB4 //defineK3
#define K4 RB5 //defineK4
#define BEEP RE0 //define beep
uchar K1_FLAG=0; //define press key flag,when pressed K1，the flag set 1，un-press K1，the bit is 0
uchar const bit_tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};//select which one segment works
uchar const seg_data[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xff,0xbf};
//
uchar disp_buf[8]; //define a buffer
/****************/
void port_init(void)
{
OPTION=0x00; //port b pull up
TRISC = 0x00; //set port c output
TRISD = 0x00; //portd data output
ADCON1=0x06; //
TRISE=0x00; //（RE0）
PORTE=0xff;
}
/****************/
void Delay_ms(uint xms)
{
int i,j;
for(i=0;i<xms;i++)
{ for(j=0;j<71;j++) ; }
}
/*********buzzer function********/
void beep()
{
BEEP=0; //buzzer ring
Delay_ms(100);
BEEP=1; //shut off buzzer
Delay_ms(100);
}
/********segment convert function********/
void conv(uchar in1,uchar in2,uchar in3) //set parameters in1、in2、in3can receive the hour、min、sec
{
disp_buf[0] =in1/10; // dicimal of hour
disp_buf[1] = in1%10; // figure of hour
disp_buf[3] = in2/10; // minute's dicimal
disp_buf[4] = in2%10; // minute's figure
disp_buf[6] = in3/10; //second's dicimal
disp_buf[7] = in3%10; // second's figure
//disp_buf[2] = 17; // display"-"
disp_buf[5] = 17; // display"-"
}
/****************/
void Display()
{
uchar tmp; //
static uchar disp_sel=0; //
tmp=bit_tab[disp_sel]; //
PORTC=tmp; //
tmp=disp_buf[disp_sel]; //
tmp=seg_data[tmp];
PORTD=tmp; //
disp_sel++; //
if(disp_sel==8)
disp_sel=0; //
}
/****************/
void timer_init()
{
GIE=1; //
PEIE=1;
T0CS=0;
PSA=0;
PS0=1;
PS1=1;
PS2=1; //IMER0 Prescaler 1:256
T0IE=1; //overflow enable
TMR0=248; //TMR0 assignment 2ms
T1CKPS0=1;T1CKPS1=1; //timer1 prescaler1:8
TMR1CS=0; //
TMR1IE=1; //
TMR1ON=1; //open the timer1 interrupt
TMR1H=0xfb; //10ms
TMR1L=0x1e; //
}
/****************/
void interrupt ISR(void)
{
if (TMR0IF==1)
{
TMR0IF=0; //clear TMR1 overflow flag
TMR0=248; //TMR0 assignment 2ms
Display(); //callback display function
}
if (TMR1IF==1)
{
TMR1IF=0; //clear TMR1 over flow flag
TMR1H=0xfb; //,timing time 10ms
TMR1L=0x1e; //
count_10ms++; //10ms+1
if(count_10ms >= 100)
{
count_10ms = 0; //judge if the counter get to100
sec++; //
if(sec == 60)
{
sec = 0;
min++; //if reach the 60second，then minute add 1
if(min ==60)
{
min = 0;
hour++; //if reach 60 minute,then hour will add 1
if(hour ==24)
{
hour = 0;min=0;sec=0; //
}
}
}
}
}
}
/****************/
void KeyProcess()
{
TMR1ON=0; //if press K1，then shut down T1，clock pause
if(K2==0) //if press K2
{
Delay_ms(10); //eliminating the signal-wobble
if(K2==0)
{
while(!K2); //waiting for K2 release
beep();
hour++; //adjust hour
if(hour==24)
{
hour = 0;
}
}
}
if(K3==0) //if press K3
{
Delay_ms(10);
if(K3==0)
{
while(!K3); //waiting for K3 release
beep();
min++; //adjust minute
if(min==60)
{
min = 0;
}
}
}
if(K4==0) //if press K4
{
Delay_ms(10);
if(K4==0)
{
while(!K4); //waiting for K4 release
beep();
TMR1ON=1; //after adjusting ，clock go on
K1_FLAG=0; //when press K1 ,the flag become 0
}
}
}
/****************/
void main(void)
{
port_init();
timer_init();
while(1)
{
if(K1==0) //
{
Delay_ms(10); //
if(K1==0)
{
while(!K1); //
beep(); //
K1_FLAG=1;
}
}
if(K1_FLAG==1)KeyProcess();
conv(hour,min,sec);
}
}
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leevise
Joined: 05 Aug 2010
Posts: 89
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| Posted: Fri Dec 21, 2012 1:07 am |
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| Ttelmah wrote: | | Code: |
#int_timer0
void timer0_int() //Um. It is an interrupt, not an initialisation
{
//Er. If the interrupt is called, then TMR0IF, will always be set
//The compiler automatically clears it.
set_timer0(0xf8); //TMR0=248;
Display();
}
//Now, you don't show us 'Display'.
//Same basic layout for timer1, with a couple of extra point
//When you declare 'count_10msec', use:
int8 count_10mSec=0;
//This does the initialisation to zero, which you have put into the ISR...
#int_timer1
void timer1_int() {
set_timer1(0xFB1E); //you need both bytes - 16bit value...
//why are you then clearing count_10ms?. This does not happen in the
//assembler ISR. It needs to be where it is initialised.
etc...
|
Comments:
The CCS msec delay function, is 'delay_ms', not 'Delay_ms'. This will cause problems if you switch to use case significant mode. You have similar case problems with 'setup_timeR_1' |
Oh, thank you for your advice.
but the PICC code is as follow:
| Code: | void interrupt ISR(void)
{
if (TMR0IF==1)
{
TMR0IF=0; //clear TMR1 overflow flag
TMR0=248; //TMR0 assignment 2ms
Display(); //callback display function
}
if (TMR1IF==1)
{
TMR1IF=0; //clear TMR1 over flow flag
TMR1H=0xfb; //,timing time 10ms
TMR1L=0x1e; //
count_10ms++; //10ms+1
if(count_10ms >= 100)
{
count_10ms = 0; //judge if the counter get to100
sec++; //
if(sec == 60)
{
sec = 0;
min++; //if reach the 60second，then minute add 1
if(min ==60)
{
min = 0;
hour++; //if reach 60 minute,then hour will add 1
if(hour ==24)
{
hour = 0;min=0;sec=0; //
}
}
}
}
}
} |
How to deal it with CCS code ?I don't know what to do.
pls guide me translate the PICC ISR code to CCS int code. |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19504
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| Posted: Fri Dec 21, 2012 2:55 am |
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Seriously, use your eyes, brain, manual and examples:
This:
| Code: |
void interrupt ISR(void)
{
if (TMR0IF==1)
{
TMR0IF=0; //clear TMR1 overflow flag
TMR0=248; //TMR0 assignment 2ms
Display(); //callback display function
}
//does exactly the same as (in CCS C), this:
#int_timer0
void timer0_int() {
set_timer0(0xf8); //TMR0=248;
Display();
}
|
The compiler tests the interrupt flag, and only calls this routine, if TMROIF==1. It also clears the interrupt flag for you.
We are not here to write the code for you. I've shown what needs to change, do it. |
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leevise
Joined: 05 Aug 2010
Posts: 89
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| Posted: Fri Dec 21, 2012 7:18 am |
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| Ttelmah wrote: | Seriously, use your eyes, brain, manual and examples:
This:
| Code: |
void interrupt ISR(void)
{
if (TMR0IF==1)
{
TMR0IF=0; //clear TMR1 overflow flag
TMR0=248; //TMR0 assignment 2ms
Display(); //callback display function
}
//does exactly the same as (in CCS C), this:
#int_timer0
void timer0_int() {
set_timer0(0xf8); //TMR0=248;
Display();
}
|
The compiler tests the interrupt flag, and only calls this routine, if TMROIF==1. It also clears the interrupt flag for you.
We are not here to write the code for you. I've shown what needs to change, do it. |
Thank you. I understand your means. My main puzzle is the interrupt flag in the past. Now I am ok.  |
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