| 0,0 → 1,103 |
|---|
| //*** Atomic counter up to 800 MHz *** |
| #include "acounter.h" |
| #include <string.h> |
| |
| #define LED PIN_C1 //CHANGE PIN_XX TO YOUR LED PIN NUMBER, EX: PIN_A5 |
| #define SEL0 PIN_E0 // external counter division ratio |
| #define SEL1 PIN_E1 // external counter division ratio |
| #define MR PIN_E2 // external counter master reset |
| #define CLKI PIN_C0 // internal counter input |
| #define BEEP PIN_C3 // buzzer |
| |
| // LCD definitions |
| #define LCD_ENABLE_PIN PIN_D4 //// |
| #define LCD_RS_PIN PIN_D6 //// |
| #define LCD_RW_PIN PIN_D5 //// |
| #define LCD_DATA4 PIN_D0 //// |
| #define LCD_DATA5 PIN_D1 //// |
| #define LCD_DATA6 PIN_D2 //// |
| #define LCD_DATA7 PIN_D3 |
| #include <lcd.c> |
| |
| int16 of=0; // count of overflow |
| int1 flag; // flag for a blinking dot |
| |
| #int_EXT // Interrupt from 1PPS |
| void EXT_isr(void) |
| { |
| unsigned int16 countH; |
| unsigned int8 countL; |
| unsigned int32 count; |
| char countS[10], a[4], b[4], c[4]; // strings for printing results |
| |
| countL=0; |
| countH=get_timer1(); // read internal counter |
| output_low(SEL0); |
| output_low(SEL1); |
| countL=input(CLKI); // read bit 0 of external counter |
| output_high(SEL0); |
| output_low(SEL1); |
| countL|=input(CLKI)<<1; // read bit 1 of external counter |
| output_low(SEL0); |
| output_high(SEL1); |
| countL|=input(CLKI)<<2; // read bit 2 of external counter |
| output_high(SEL0); |
| output_high(SEL1); |
| countL|=input(CLKI)<<3; // read bit 3 of external counter |
| |
| output_low(MR); // External counter Master Reset |
| output_high(MR); |
| |
| set_timer1(0); // Internal counter reset |
| |
| count=((unsigned int32)of<<20)+((unsigned int32)countH<<4)+(unsigned int32)countL; // concatenate |
| |
| sprintf(countS,"%09Lu", count); // engeneering values conversion |
| strncpy(a, countS, 3); a[3]='\0'; |
| strncpy(b, &countS[3], 3); b[3]='\0'; |
| strncpy(c, &countS[6], 3); c[3]='\0'; |
| |
| printf("%s\r\n", countS); // output to RS232 |
| if(flag==0){lcd_putc("\fCvak... \n"); flag=1;} else {lcd_putc("\fCvak....\n"); flag=0;}; |
| printf(lcd_putc, "%s %s %s Hz\n", a, b, c); // output to LCD |
| |
| output_toggle(BEEP); // cvak... |
| |
| of=0; // reset overflow counter |
| } |
| |
| #int_TIMER1 // Interrupf from overflow |
| void TIMER1_isr(void) |
| { |
| of++; |
| } |
| |
| void main() |
| { |
| |
| setup_adc_ports(NO_ANALOGS|VSS_VDD); |
| setup_adc(ADC_CLOCK_DIV_2); |
| setup_spi(SPI_SS_DISABLED); |
| setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1); |
| setup_timer_1(T1_EXTERNAL|T1_DIV_BY_1); |
| setup_timer_2(T2_DISABLED,0,1); |
| setup_ccp1(CCP_OFF); |
| setup_comparator(NC_NC_NC_NC);// This device COMP currently not supported by the PICWizard |
| |
| output_toggle(BEEP); // cvak... |
| printf("Cvak...."); |
| |
| ext_int_edge( L_TO_H ); // set 1PPS active edge |
| enable_interrupts(INT_TIMER1); |
| enable_interrupts(INT_EXT); |
| enable_interrupts(GLOBAL); |
| |
| lcd_init(); |
| |
| lcd_putc("\fCvak...\nHmmm...\n"); |
| |
| while(true) |
| { |
| } |
| |
| } |