1 |
//*** Atomic counter up to 800 MHz *** |
1 |
//*** Atomic counter up to 800 MHz *** |
2 |
#include "acounter.h" |
2 |
#include "acounter.h" |
3 |
#include <string.h> |
3 |
#include <string.h> |
4 |
|
4 |
|
5 |
#define LED PIN_C1 //CHANGE PIN_XX TO YOUR LED PIN NUMBER, EX: PIN_A5 |
5 |
#define LED PIN_C1 //CHANGE PIN_XX TO YOUR LED PIN NUMBER, EX: PIN_A5 |
6 |
#define SEL0 PIN_E0 // external counter division ratio |
6 |
#define SEL0 PIN_E0 // external counter division ratio |
7 |
#define SEL1 PIN_E1 // external counter division ratio |
7 |
#define SEL1 PIN_E1 // external counter division ratio |
8 |
#define MR PIN_E2 // external counter master reset |
8 |
#define MR PIN_E2 // external counter master reset |
9 |
#define CLKI PIN_C0 // internal counter input |
9 |
#define CLKI PIN_C0 // internal counter input |
10 |
#define BEEP PIN_C3 // buzzer |
10 |
#define BEEP PIN_C3 // buzzer |
11 |
|
11 |
|
12 |
// LCD definitions |
12 |
// LCD definitions |
13 |
#define LCD_ENABLE_PIN PIN_D4 //// |
13 |
#define LCD_ENABLE_PIN PIN_D4 //// |
14 |
#define LCD_RS_PIN PIN_D6 //// |
14 |
#define LCD_RS_PIN PIN_D6 //// |
15 |
#define LCD_RW_PIN PIN_D5 //// |
15 |
#define LCD_RW_PIN PIN_D5 //// |
16 |
#define LCD_DATA4 PIN_D0 //// |
16 |
#define LCD_DATA4 PIN_D0 //// |
17 |
#define LCD_DATA5 PIN_D1 //// |
17 |
#define LCD_DATA5 PIN_D1 //// |
18 |
#define LCD_DATA6 PIN_D2 //// |
18 |
#define LCD_DATA6 PIN_D2 //// |
19 |
#define LCD_DATA7 PIN_D3 |
19 |
#define LCD_DATA7 PIN_D3 |
20 |
#include <lcd.c> |
20 |
#include <lcd.c> |
21 |
|
21 |
|
22 |
int16 of=0; // count of overflow |
22 |
int16 of=0; // count of overflow |
23 |
int1 flag; // flag for a blinking dot |
23 |
int1 flag; // flag for a blinking dot |
24 |
|
24 |
|
25 |
#int_EXT // Interrupt from 1PPS |
25 |
#int_EXT // Interrupt from 1PPS |
26 |
void EXT_isr(void) |
26 |
void EXT_isr(void) |
27 |
{ |
27 |
{ |
28 |
unsigned int16 countH; |
28 |
unsigned int16 countH; |
29 |
unsigned int8 countL; |
29 |
unsigned int8 countL; |
30 |
unsigned int32 count; |
30 |
unsigned int32 count; |
31 |
char countS[10], a[4], b[4], c[4]; // strings for printing results |
31 |
char countS[10], a[4], b[4], c[4]; // strings for printing results |
32 |
|
32 |
|
33 |
countL=0; |
33 |
countL=0; |
34 |
countH=get_timer1(); // read internal counter |
34 |
countH=get_timer1(); // read internal counter |
35 |
output_low(SEL0); |
35 |
output_low(SEL0); |
36 |
output_low(SEL1); |
36 |
output_low(SEL1); |
37 |
countL=input(CLKI); // read bit 0 of external counter |
37 |
countL=input(CLKI); // read bit 0 of external counter |
38 |
output_high(SEL0); |
38 |
output_high(SEL0); |
39 |
output_low(SEL1); |
39 |
output_low(SEL1); |
40 |
countL|=input(CLKI)<<1; // read bit 1 of external counter |
40 |
countL|=input(CLKI)<<1; // read bit 1 of external counter |
41 |
output_low(SEL0); |
41 |
output_low(SEL0); |
42 |
output_high(SEL1); |
42 |
output_high(SEL1); |
43 |
countL|=input(CLKI)<<2; // read bit 2 of external counter |
43 |
countL|=input(CLKI)<<2; // read bit 2 of external counter |
44 |
output_high(SEL0); |
44 |
output_high(SEL0); |
45 |
output_high(SEL1); |
45 |
output_high(SEL1); |
46 |
countL|=input(CLKI)<<3; // read bit 3 of external counter |
46 |
countL|=input(CLKI)<<3; // read bit 3 of external counter |
47 |
|
47 |
|
48 |
output_low(MR); // External counter Master Reset |
48 |
output_low(MR); // External counter Master Reset |
49 |
output_high(MR); |
49 |
output_high(MR); |
50 |
|
50 |
|
51 |
set_timer1(0); // Internal counter reset |
51 |
set_timer1(0); // Internal counter reset |
52 |
|
52 |
|
53 |
count=((unsigned int32)of<<20)+((unsigned int32)countH<<4)+(unsigned int32)countL; // concatenate |
53 |
count=((unsigned int32)of<<20)+((unsigned int32)countH<<4)+(unsigned int32)countL; // concatenate |
54 |
|
54 |
|
55 |
sprintf(countS,"%09Lu", count); // engeneering values conversion |
55 |
sprintf(countS,"%09Lu", count); // engeneering values conversion |
56 |
strncpy(a, countS, 3); a[3]='\0'; |
56 |
strncpy(a, countS, 3); a[3]='\0'; |
57 |
strncpy(b, &countS[3], 3); b[3]='\0'; |
57 |
strncpy(b, &countS[3], 3); b[3]='\0'; |
58 |
strncpy(c, &countS[6], 3); c[3]='\0'; |
58 |
strncpy(c, &countS[6], 3); c[3]='\0'; |
59 |
|
59 |
|
60 |
printf("%s\r\n", countS); // output to RS232 |
60 |
printf("%s\r\n", countS); // output to RS232 |
61 |
if(flag==0){lcd_putc("\fCvak... \n"); flag=1;} else {lcd_putc("\fCvak....\n"); flag=0;}; |
61 |
if(flag==0){lcd_putc("\fCvak... \n"); flag=1;} else {lcd_putc("\fCvak....\n"); flag=0;}; |
62 |
printf(lcd_putc, "%s %s %s Hz\n", a, b, c); // output to LCD |
62 |
printf(lcd_putc, "%s %s %s Hz\n", a, b, c); // output to LCD |
63 |
|
63 |
|
64 |
output_toggle(BEEP); // cvak... |
64 |
output_toggle(BEEP); // cvak... |
65 |
|
65 |
|
66 |
of=0; // reset overflow counter |
66 |
of=0; // reset overflow counter |
67 |
} |
67 |
} |
68 |
|
68 |
|
69 |
#int_TIMER1 // Interrupf from overflow |
69 |
#int_TIMER1 // Interrupf from overflow |
70 |
void TIMER1_isr(void) |
70 |
void TIMER1_isr(void) |
71 |
{ |
71 |
{ |
72 |
of++; |
72 |
of++; |
73 |
} |
73 |
} |
74 |
|
74 |
|
75 |
void main() |
75 |
void main() |
76 |
{ |
76 |
{ |
77 |
|
77 |
|
78 |
setup_adc_ports(NO_ANALOGS|VSS_VDD); |
78 |
setup_adc_ports(NO_ANALOGS|VSS_VDD); |
79 |
setup_adc(ADC_CLOCK_DIV_2); |
79 |
setup_adc(ADC_CLOCK_DIV_2); |
80 |
setup_spi(SPI_SS_DISABLED); |
80 |
setup_spi(SPI_SS_DISABLED); |
81 |
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1); |
81 |
setup_timer_0(RTCC_INTERNAL|RTCC_DIV_1); |
82 |
setup_timer_1(T1_EXTERNAL|T1_DIV_BY_1); |
82 |
setup_timer_1(T1_EXTERNAL|T1_DIV_BY_1); |
83 |
setup_timer_2(T2_DISABLED,0,1); |
83 |
setup_timer_2(T2_DISABLED,0,1); |
84 |
setup_ccp1(CCP_OFF); |
84 |
setup_ccp1(CCP_OFF); |
85 |
setup_comparator(NC_NC_NC_NC);// This device COMP currently not supported by the PICWizard |
85 |
setup_comparator(NC_NC_NC_NC);// This device COMP currently not supported by the PICWizard |
86 |
|
86 |
|
87 |
output_toggle(BEEP); // cvak... |
87 |
output_toggle(BEEP); // cvak... |
88 |
printf("Cvak...."); |
88 |
printf("Cvak...."); |
89 |
|
89 |
|
90 |
ext_int_edge( L_TO_H ); // set 1PPS active edge |
90 |
ext_int_edge( L_TO_H ); // set 1PPS active edge |
91 |
enable_interrupts(INT_TIMER1); |
91 |
enable_interrupts(INT_TIMER1); |
92 |
enable_interrupts(INT_EXT); |
92 |
enable_interrupts(INT_EXT); |
93 |
enable_interrupts(GLOBAL); |
93 |
enable_interrupts(GLOBAL); |
94 |
|
94 |
|
95 |
lcd_init(); |
95 |
lcd_init(); |
96 |
|
96 |
|
97 |
lcd_putc("\fCvak...\nHmmm...\n"); |
97 |
lcd_putc("\fCvak...\nHmmm...\n"); |
98 |
|
98 |
|
99 |
while(true) |
99 |
while(true) |
100 |
{ |
100 |
{ |
101 |
} |
101 |
} |
102 |
|
102 |
|
103 |
} |
103 |
} |