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mvanvliet
Joined: 02 Jun 2009
Posts: 123
Location: The Netherlands
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| output_c on 16F1823 with 4.123 |
 Posted: Tue Dec 06, 2011 9:52 am |
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If I try to use the output_c function of the compiler for the 16F1823 controller I can't compile my code. It's the EX_STEP.c example file which I want to change to the 16F1823 controller. Does anyone know why it isn't working?
Compiler version: 4.123
| Code: | #include <16F1823.H>
#FUSES INTRC_IO,NOWDT
#FUSES PUT,NOMCLR,PROTECT,NOCPD,BROWNOUT,BORV25
#FUSES NOCLKOUT,NOIESO
#FUSES NOFCMEN,WRT
#FUSES PLL_SW,NOSTVREN,NODEBUG,NOLVP
#Device ADC=8
#use delay(clock=4000000)
BYTE const POSITIONS[4] = {0b0101,
0b1001,
0b1010,
0b0110};
//#define DATA PIN_A0
//#define CLK PIN_A1
#define RESET PIN_A2
//#define MCLR PIN_A3
//#define INPUT PIN_A4 ANALOOG sAN3
#define EINDSCHAKELAAR PIN_A5
#define OUT1 PIN_C0
#define OUT2 PIN_C1
#define OUT3 PIN_C2
#define OUT4 PIN_C3
#define LED1_UIT PIN_C4
#define LED2_UIT PIN_C5
drive_stepper(BYTE speed, char dir, BYTE steps) {
static BYTE stepper_state = 0;
BYTE i;
for(i=0; i<steps; ++i) {
delay_ms(speed);
set_tris_c(0xf0);
OUTPUT_C = POSITIONS[ stepper_state ];
if(dir!='R')
stepper_state=(stepper_state+1)&(sizeof(POSITIONS)-1);
else
stepper_state=(stepper_state-1)&(sizeof(POSITIONS)-1);
}
}
use_pot() {
BYTE value;
setup_adc(adc_clock_internal);
set_adc_channel( 1 );
while( TRUE ) {
value=read_adc();
if(value<0x80)
drive_stepper(value,'R',8);
else if(value>0x80)
drive_stepper(128-(value-128),'F',8);
}
}
use_switch(BYTE speed, char dir) {
BYTE steps;
while(true) {
while(input(RESET)) ;
drive_stepper(speed,dir,steps);
while(!input(RESET)) ;
delay_ms(100);
}
}
main() {
setup_oscillator(OSC_4MHZ);
setup_dac(DAC_OFF);
setup_vref(VREF_OFF);
setup_adc_ports(sAN3|VSS_VDD); //A4 = AN3 = AC input
setup_adc(ADC_CLOCK_DIV_8); // Built-in A/D setup function TAD is 2µSec
setup_ccp1(CCP_PWM); // Configure CCP1 as a PWM
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_128); // 32,8 ms tot overflow (0.25us*4*128*256)
setup_timer_1(T1_INTERNAL|T1_DIV_BY_8); // 8us per ophoging van timer1
setup_timer_2(T2_DIV_BY_1, 255, 1); // Setup for 8 bit at 4kHz
T1GSEL = 0; // T1_GATE_A4 instructie doet het niet vandaar handmatig.
TXCKSEL = 1;
BYTE speed, steps;
char dir;
while(1)
{
if(speed==0)
use_pot();
if(steps==0)
use_switch(speed,dir);
drive_stepper(speed,dir,steps);
}
} |
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temtronic
Joined: 01 Jul 2010
Posts: 9171
Location: Greensville,Ontario
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| Posted: Tue Dec 06, 2011 10:25 am |
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First, I'd create a simple 'toggle LED on a portC pin' before modifying other programs.
This will verify that the PIC is physically configure correctly. You do have current limiting resistors for the LEDs ?! |
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Ttelmah
Joined: 11 Mar 2010
Posts: 19363
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| Posted: Tue Dec 06, 2011 10:52 am |
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Comments:
1) C does not support 'mid function' variable declaration. Variables _must_ be declared at the start of the function, or code block. CCS, does not complain about this, and will 'sometimes' accept this, but _not_ reliably.
2) Look in the manual for the syntax of 'output_c'. What you have is _not_ right. In C, '=' assigns a value to a variable. It doesn't send a value to a function....
Best Wishes |
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mvanvliet
Joined: 02 Jun 2009
Posts: 123
Location: The Netherlands
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| Posted: Wed Dec 07, 2011 1:49 am |
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It's compiling when I change the sentence to
| Code: |
output_c(POSITIONS[ stepper_state ]);
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Now I'm going to make the hardware to test the program. Thanks. |
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