| 0,0 → 1,114 |
|---|
| //---------------------------- |
| // Sagitta - 9. 9. 2005 |
| //---------------------------- |
| |
| #include ".\menic.h" |
| |
| #define RAZENI 55 // Po kolika ms se bude menit rychlost pri rozjizdeni |
| #define REFSTART 120 // Hodnota komparatoru odpovidajici 1,7V pri |
| // nezatizenych solarnich clancich |
| #define DUTY1 2 // Delka sepnuti PWM v us pro sero |
| #define DUTY2 20 // Delka sepnuti PWM v us pro jednu zarovku 500W |
| |
| // Tabulka napeti vuci referencni LED (cca 1,7V) |
| // hodnota prevodniku / napeti na clancich |
| // 250 1,6V |
| // 200 2,1V |
| // 150 2,8V |
| // 145 2,9V |
| // 120 3,6V |
| // 110 4,0V |
| |
| #define MENIC PIN_B3 // Spinani tranzistoru menice |
| #define REFPWR PIN_B1 // Napajeni zdroje referencniho napeti |
| #define MOTOR PIN_B2 // Spinani tranzistoru motoru |
| |
| #byte SSPBUF = 0x13 // Registry jednotky SSP |
| #byte SSPCON1 = 0x14 |
| #byte SSPSTAT = 0x94 |
| |
| // Vzorky pro generovani PWM pomoci SSP |
| unsigned int8 const Pattern[8] = {0x02,0x06,0x0e,0x1e,0x3e,0x7e,0xfe,0xff}; |
| unsigned int8 MotorPattern; |
| |
| #INT_SSP |
| void IntSSP() // Vyvola se po odeslani znaku pres SSP |
| { |
| SSPBUF=MotorPattern; // znovu vysli stejnou hodnotu |
| } |
| |
| void main() |
| { |
| int8 n; |
| int8 cekej; |
| int8 perioda; |
| int8 rozjezd; |
| |
| // Inicializace casovacu a prevodniku |
| setup_timer_0(RTCC_INTERNAL);setup_wdt(WDT_1152MS); |
| setup_adc_ports(ADC_CLOCK_INTERNAL|sAN1|sAN4|VSS_VDD); |
| setup_adc(ADC_CLOCK_INTERNAL); |
| setup_spi(FALSE); |
| setup_timer_1(T1_DISABLED); |
| setup_comparator(NC_NC_NC_NC); |
| setup_vref(FALSE); |
| |
| output_low(MENIC); // Vsechno zastav |
| output_low(MOTOR); |
| output_low(REFPWR); |
| |
| set_adc_channel(4); // Vyber AD kanal pro pomerne mereni napeti |
| set_pwm1_duty(0); // Spust PWM, ale zatim s trvalou 0 na vystupu |
| setup_ccp1(CCP_PWM); // PWM pro zatizeni clanku v seru |
| setup_timer_2(T2_DIV_BY_1,100,1); // perioda PWM |
| |
| setup_oscillator(OSC_4MHZ|OSC_INTRC); // rozjed PIC (zvysi se odber) |
| |
| // jsme v depu? |
| set_pwm1_duty(DUTY1); // delka sepnuti |
| do |
| { |
| output_low(REFPWR); |
| delay_ms(100); |
| output_high(REFPWR); // zapni napajeni napetove reference (LED) |
| delay_ms(20); |
| } while (read_adc()>REFSTART); // Odkryl starter clanky? |
| output_low(REFPWR); |
| |
| // Precti trimr |
| set_adc_channel(1); // Zjisteni nastaveni trimru PWM |
| delay_us(100); // Pockej na prepnuti kanalu A/D prevodniku |
| perioda=(read_adc()>>1)+40; // rozsah: 40 az 167 |
| set_pwm1_duty(0); // Zastav PWM, aby slo zmenit periodu |
| setup_timer_2(T2_DIV_BY_1,perioda,1); // Zapis nastavenou periodu |
| |
| // nabíjíme |
| set_pwm1_duty(DUTY2); // delka sepnuti PWM |
| delay_ms(12500); |
| |
| // rozjezd |
| SSPSTAT = 0; // inicializace SPI jednotky |
| SSPCON1 = 0x22; // SPI OSC/64 |
| MotorPattern=Pattern[0]; |
| SSPBUF=MotorPattern; // 1. data pro vyslani |
| enable_interrupts(global); |
| enable_interrupts(INT_SSP); // az budou vyslana, prijde preruseni |
| |
| for(n=0; n<=7; n++) // razeni osmi rychlostnich stupnu |
| { |
| MotorPattern=Pattern[n]; |
| delay_ms(RAZENI); // Pockej na dalsi razeni |
| }; |
| SSPSTAT = 0; |
| SSPCON1 = 0; // SPI stop |
| disable_interrupts(INT_SSP); // zastav preruseni od SSP |
| |
| // jedem co to da |
| output_high(MOTOR); |
| delay_ms(1300); // dyl jak 1,3s bysme nemeli jet :) |
| output_low(MOTOR); // zastav motor |
| // Menic je stale zapnut a zatezuje clanky |
| |
| while(TRUE); // Cekej, dokud se neztrati svetlo, |
| // nebo prijde WatchDog |
| } |