| ??? 01/13/06 18:40 Read: times |
#107333 - Split mode 3 timer c SDCC program Responding to: ???'s previous message |
Hello Kevin
Here is a skeleton c program which uses timer 0 in split mode and timer 1 as a baud rate generator. Regards, Charles Bannister
// Skeleton c program using split Timer zero (mode 3)
// Compile SDCC Mode3Timer.c
// Packihx Mode3Timer.ihx > Mode3Timer.hex
#include<8052.h>
unsigned char cMeasureDone;
unsigned char cTimer1, cTimer2;
unsigned char cCounter1, cCounter2;
void measure_start( void );
char measure_poll( void );
void main (void){
PCON |= SMOD;
SCON = 0x52;
TMOD = 0x27;
TH1 = 0xF3;
TL1 = -1;
for(;;){
RI=0;
measure_start();
while( measure_poll() == 0 );
// YOUR CODE GOES HERE
}
}
char measure_poll( void )
{
return cMeasureDone;
}
void int_tl0 (void) interrupt 1
{
if( ++cCounter1 == 0 )
cCounter2++;
}
void int_th0 (void) interrupt 3
{
if( --cTimer1 == 0 ){
if( --cTimer2 == 0 )
cMeasureDone = 1;}
}
void measure_start( void )
{
TR0 = 0;
TF0 = 0;
TL0 = 0;
cCounter1 = 0;
cCounter2 = 0;
cTimer1 = 0;
cTimer2 = 30;
TR1 = 1;
IT0 = 1;
IE0 = 0;
ET0 = 1;
ET1 = 1;
EA = 1;
cMeasureDone = 0;
TH0 = 0;
TR0 = 1;
}
:040000000200CD32FB :03000B000200549C :0100130032BA :03001B000200766A :0100230032AA :01002B0032A2 :1000CD0075810C1200C9E582600302002C7900E9EC :1000DD004400601B7A00900115780075A000E49330 :1000ED00F2A308B8000205A0D9F4DAF275A0FF78E2 :1000FD0000E84400600C7900900000E4F0A3D8FC07 :08010D00D9FAF6D8FD02002C1E :10002C0012003180FE438780759852758927758D33 :10003C00F3758BFFC2981200A1120050AA82BA006D :10004C00F380F62285088222C0E0C0F0C082C08313 :10005C00C0D075D000050BE50B60028002050CD0FA :10006C00D0D083D082D0F0D0E032C0E0C0F0C082DB :10007C00C083C0D075D0001509E5096002800B154E :10008C000AE50A60028003750801D0D0D083D082C3 :10009C00D0F0D0E032C28CC28D758A00750B007521 :1000AC000C00750900750A1ED28ED288C289D2A99D :1000BC00D2ABD2AF750800758C00D28C2275820041 :0100CC002211 :00000001FF |
| Topic | Author | Date |
| two timers and uart | 01/01/70 00:00 | |
| Where to find it | 01/01/70 00:00 | |
| thanks | 01/01/70 00:00 | |
| bible | 01/01/70 00:00 | |
| step 1, step 2, step 3 | 01/01/70 00:00 | |
| Count? | 01/01/70 00:00 | |
| Yes | 01/01/70 00:00 | |
| Split mode 3 timer c SDCC program | 01/01/70 00:00 | |
| continuation | 01/01/70 00:00 | |
| use 8052 instead | 01/01/70 00:00 | |
| clarification | 01/01/70 00:00 | |
| OK | 01/01/70 00:00 | |
| any that has your chip in the devicelist | 01/01/70 00:00 | |
| too slow | 01/01/70 00:00 | |
| 11059200 to big ! | 01/01/70 00:00 | |
| Tutorial shows | 01/01/70 00:00 | |
Macros | 01/01/70 00:00 |