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#include "C:\MIHO_DAT\KROKAC\krokac.h"
unsigned int StepState; // Vnitrni promenna kroku
signed int StepDirection; // Smer +1/0/-1
byte const StepTab[8]={ // Tabulka pro krokovy motor
0b0001, // 0
0b0101, // 1
0b0100, // 2
0b0110, // 3
0b0010, // 4
0b1010, // 5
0b1000 // 6
0b1001, // 7
};
#INT_TIMER2
void StepNext()
{
unsigned int i;
StepState+=StepDirection; // posun se na dalsi krok
i=StepState&0b111; // vezmi spodni 3 bity stavu
i=StepTab[i]; // prekoduj pomoci tabulky
output_bit(MOTORA,i&0b0001); // aktivuj jednotlive vystupy
output_bit(MOTORB,i&0b0010);
output_bit(MOTORC,i&0b0100);
output_bit(MOTORD,i&0b1000);
}
void StepSetDirection(signed int Direction)
{
if(Direction> 1) Direction= 1;
if(Direction<-1) Direction=-1;
StepDirection=Direction;
}
void StepSetTime(unsigned int16 Time)
{
}
void Delay(unsigned int16 Time)
{
while(Time>255) {Time-=256;delay_us(256);};
if(Time!=0) delay_us(Time);
}
void main()
{
unsigned int16 T;
unsigned long int i;
// Nastav pracovni frekvenci procesoru
setup_oscillator(OSC_4MHZ);
// Vypni motorovy vystup
output_low(MOTORA);
output_low(MOTORB);
output_low(MOTORC);
output_low(MOTORD);
// Vstupy s pull-up odporem
port_b_pullups(TRUE);
// Inicializace A/D prevodniku
setup_adc_ports(sAN0|VSS_VDD);
setup_adc(ADC_CLOCK_INTERNAL);
set_adc_channel(0);
// Dalsi inicializace
setup_spi(FALSE);
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1);
setup_timer_1(T1_DISABLED);
setup_comparator(NC_NC_NC_NC);
setup_vref(FALSE);
// Inicializace stavovych promennych
StepState=0;
// Nastaveni casovace
setup_timer_2(T2_DIV_BY_16,0xFF,1);
// Nastveni preruseni od casovace
enable_interrupts(global);
enable_interrupts(int_timer2);
for(;;)
{
T=read_adc(ADC_READ_ONLY); // Prectu hodnotu
read_adc(ADC_START_ONLY); // Ostartuji dalsi prevod (na pozadi)
//setup_timer_2(T2_DIV_BY_16,T,1);
if(T>0) *0x92=T; // Preload register casovace
// Podle prepinacu se hybu
if(input(PIN_B5))
{
if(input(PIN_B4)) StepSetDirection(1); else StepSetDirection(-1);
}
else
{ int1 x; // pomocna promenna aby se volalo spozdeni jen 1x
if (StepState>230) {
if (!input(PIN_B4) && (x))
{
StepSetDirection(0);
delay_ms(500);
x=0;
};
StepSetDirection(-1);
}
if (StepState<30) {
StepSetDirection( 1);
x=1;
}
}
//StepDirection=2;
//for(i=0;i<800;i++)
//{
// StepNext();
// Delay(T);
//}
//delay_ms(10);
//StepDirection=-1;
//for(i=0;i<800;i++)
//{
// StepNext();
// Delay(T);
//}
//delay_ms(10);
} // Cyklus for
}