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drdavid
Joined: 26 Jan 2006
Posts: 1
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| Problems in CCS C for Servo Control on 16F627 - HELP! |
 Posted: Thu Jan 26, 2006 2:12 pm |
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I have been using the 16F627 having just migrated over to CCS C from other C compilers. Each is a little diferent. Can't seem to get it right in the CCS C world.
Code to follow - can anyone tell me what I am missing?
Thanks.
Dr D
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//SERVO TEST CONTROL 1.1, 20 JAN 06.
//for Biomass Energy Foundation, Golden, Colorado
//Programmed by David M Holmes-Smith of Holmes-Smith Enginering on
//20 Janauary 2006 with ALL RIGHTS RESERVED.
//HM: 303 344 2900, CELL: 720 840 7472
#include <16F627.h>
#use delay(clock=4000000)
#use fast_io(A)
#use fast_io(B)
#fuses INTRC, NOWDT,NOPROTECT,NOLVP, PUT
void main()
{
int input, loop;
SET_TRIS_B(0x03);
SET_TRIS_A(0xF0);
while(1)
{if (PIN_B0 == 1)
{input = input+1;
if (input > 15)
{input = 15;}
delay_ms(200);
}
else if (PIN_B1 == 1)
{input = input - 1;
if (input < 1)
{input = 1;}
delay_ms(200);
}
switch (input)
{case '0' :
for(loop=0; loop<10; loop++) //valve all the way closed
{output_high(PIN_B3);
delay_us (500);
output_low(PIN_B3);
delay_us (100);
}
output_low(PIN_A0);
output_low(PIN_A1);
output_low(PIN_A2);
output_low(PIN_A3);
break;
case '1' :
for(loop=0; loop<10; loop++) //valve 1/15 open
{output_high(PIN_B3);
delay_us (563);
output_low(PIN_B3);
delay_us (100);
}
output_high(PIN_A0);
output_low(PIN_A1);
output_low(PIN_A2);
output_low(PIN_A3);
break;
case '2' :
for(loop=0; loop<10; loop++) //valve 2/15 open
{output_high(PIN_B3);
delay_us (625);
output_low(PIN_B3);
delay_us (100);
}
output_low(PIN_A0);
output_high(PIN_A1);
output_low(PIN_A2);
output_low(PIN_A3);
break;
case '3' :
for(loop=0; loop<10; loop++) //valve 3/15 open
{output_high(PIN_B3);
delay_us (687);
output_low(PIN_B3);
delay_us (100);
}
output_high(PIN_A0);
output_high(PIN_A1);
output_low(PIN_A2);
output_low(PIN_A3);
break;
case '4' :
for(loop=0; loop<10; loop++) //valve 4/15 open
{output_high(PIN_B3);
delay_us (750);
output_low(PIN_B3);
delay_us (100);
}
output_low(PIN_A0);
output_low(PIN_A1);
output_high(PIN_A2);
output_low(PIN_A3);
break;
case '5' :
for(loop=0; loop<10; loop++) //valve 5/15 open
{output_high(PIN_B3);
delay_us (812);
output_low(PIN_B3);
delay_us (100);
}
output_high(PIN_A0);
output_low(PIN_A1);
output_high(PIN_A2);
output_low(PIN_A3);
break;
case '6' :
for(loop=0; loop<10; loop++) //valve 6/15 open
{output_high(PIN_B3);
delay_us (875);
output_low(PIN_B3);
delay_us (100);
}
output_low(PIN_A0);
output_high(PIN_A1);
output_high(PIN_A2);
output_low(PIN_A3);
break;
case '7':
for(loop=0; loop<10; loop++) //valve 7/15 open
{output_high(PIN_B3);
delay_us (937);
output_low(PIN_B3);
delay_us (100);
}
output_high(PIN_A0);
output_high(PIN_A1);
output_high(PIN_A2);
output_low(PIN_A3);
break;
case '8' :
for(loop=0; loop<10; loop++) //valve 8/15 open
{output_high(PIN_B3);
delay_us (1000);
output_low(PIN_B3);
delay_us (100);
}
output_low(PIN_A0);
output_low(PIN_A1);
output_low(PIN_A2);
output_high(PIN_A3);
break;
case '9' :
for(loop=0; loop<10; loop++) //valve 8/15 open
{output_high(PIN_B3);
delay_us (1062);
output_low(PIN_B3);
delay_us (100);
}
output_high(PIN_A0);
output_low(PIN_A1);
output_low(PIN_A2);
output_high(PIN_A3);
break;
case 10 :
for(loop=0; loop<10; loop++) //valve 9/15 open
{output_high(PIN_B3);
delay_us (1125);
output_low(PIN_B3);
delay_us (100);
}
output_low(PIN_A0);
output_high(PIN_A1);
output_low(PIN_A2);
output_high(PIN_A3);
break;
case 11 :
for(loop=0; loop<10; loop++) //valve 10/15 open
{output_high(PIN_B3);
delay_us (1187);
output_low(PIN_B3);
delay_us (100);
}
output_high(PIN_A0);
output_high(PIN_A1);
output_low(PIN_A2);
output_high(PIN_A3);
break;
case 12 :
for(loop=0; loop<10; loop++) //valve 11/15 open
{output_high(PIN_B3);
delay_us (1250);
output_low(PIN_B3);
delay_us (100);
}
output_low(PIN_A0);
output_low(PIN_A1);
output_high(PIN_A2);
output_high(PIN_A3);
break;
case 13 :
for(loop=0; loop<10; loop++) //valve 12/15 open
{output_high(PIN_B3);
delay_us (1312);
output_low(PIN_B3);
delay_us (100);
}
output_high(PIN_A0);
output_low(PIN_A1);
output_high(PIN_A2);
output_high(PIN_A3);
break;
case 14 :
for(loop=0; loop<10; loop++) //valve 13/15 open
{output_high(PIN_B3);
delay_us (1375);
output_low(PIN_B3);
delay_us (100);
}
output_low(PIN_A0);
output_high(PIN_A1);
output_high(PIN_A2);
output_high(PIN_A3);
break;
case 15 :
for(loop=0; loop<10; loop++) //valve 14/15 open
{output_high(PIN_B3);
delay_us (1437);
output_low(PIN_B3);
delay_us (100);
}
output_high(PIN_A0);
output_high(PIN_A1);
output_high(PIN_A2);
output_high(PIN_A3);
break;
}
}
} |
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Brian S
Joined: 06 Sep 2005
Posts: 13
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| Posted: Thu Jan 26, 2006 3:56 pm |
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You're probably running into simple syntax issues....usually
the hardest things to spot with a new compiler.
For instance, to check Port pin B1, you need an explicit input call;
ie, "if ( input(PIN_B4) == 1 )" rather than your "if (PIN_B0 == 1)".
While the word "input" isn't specifically reserved, I avoid it as a
variable name; I find it confusing when looking for errors....
Haven't the time to check for other issues at the moment; sorry.
Good luck! |
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treitmey
Joined: 23 Jan 2004
Posts: 1094
Location: Appleton,WI USA
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| Posted: Thu Jan 26, 2006 5:01 pm |
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This is what I have for a 16F877. A few changes to pin and the 0x05 and you should be running
| Code: | #include <16F877.h>
#device *=16 //not needed for now.
#use delay(clock=16000000)
#fuses hs,nowdt,nolvp,protect,put,brownout
#use rs232(baud=19200,xmit=PIN_E0,INVERT,stream=DEBUG)
#case
#zero_ram
#use fast_io(A)
#byte port_a=0x05 //port A of a 16F877A (need to change this)
//======prototypes========//
void run_valve(int16 time,int8 port_a_value);
void long_delay_us(long count);//use an int16 in delay_us
//======main==============//
void main(){
int8 input,last_value,loop;
//think of the int16 as the time delay
int16 time[17]={0,500,563,625,687,750,812,875,937,1000,1062,1125,1187,1250,1312,1375,1437};
setup_adc_ports(NO_ANALOGS);
fprintf(DEBUG,"Starting\n\r");
set_tris_a(0xF0);
while(TRUE){
delay_ms(200);
if (input(PIN_B0) == 0){ //button pressed,count up
input = input+1;
if (input > 16){input = 16;}//keep input < 16
}
else if (input(PIN_A4)==0){ //button pressed,count down
input = input - 1;
if (input < 1){input = 1;}//keep input >0
}
if(input!=last_value){
fprintf(DEBUG,"input=%u ",input);
run_valve(time[input],input);
last_value=input;
}
}//end while(true)
}//end main
//===============run_valve==============//
void run_valve(int16 time_uS,int8 port_a_value){
int8 loop;
fprintf(DEBUG,"time=%lu value=%u\n\r",time_uS,port_a_value);
for(loop=0; loop<10; loop++){ //valve 3/15 open
output_high(PIN_B3);
long_delay_us(time_uS);
output_low(PIN_B3);
delay_us (100);
}
port_a=port_a_value;
// output_high(PIN_A0);// output_high(PIN_A1);// output_low(PIN_A2);// output_low(PIN_A3);
break;
}
//===========long_delay_us===========//
void long_delay_us(long count)
{
char i;
i = (char)(count >> 8);
while(i >= 1)
{
i--;
delay_us(253);
restart_wdt();
}
delay_us((char)count);
}
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