Subversion Repositories group.electronics

Rev

Go to most recent revision | Details | Last modification | View Log | RSS feed

Rev Author Line No. Line
130 pfowler 1 
#include <avr/io.h>
2 
#include <avr/wdt.h>
3 
#include <avr/interrupt.h>
4 
#include <string.h>
5 
#include <util/delay.h>
6 
#include <stdlib.h>
7 
 
8 
#include "avrutil.h"
9 
 
10 
uint32_t millis(void) {
11 
	return systime;
12 
}
13 
 
14 
inline uint8_t map_8(uint8_t x, uint8_t in_min, uint8_t in_max, uint8_t out_min, uint8_t out_max) {
15 
	return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
16 
}
17 
 
18 
inline void delay_ms(uint16_t count) {
19 
  while(count--)
20 
    _delay_ms(1);
21 
}
22 
 
23 
void pulsePin(uint8_t port, uint8_t pin, uint16_t count) {
24 
  sbi(port, pin);
25 
  delay_ms(count);
26 
  cbi(port, pin);
27 
}
28 
 
132 pfowler 29 
/*
130 pfowler 30 
void systemLed(uint8_t state) {
31 
	if (state)
32 
		sbi(PORTA, PA0);
33 
	else
34 
		cbi(PORTA, PA0);
35 
}
132 pfowler 36 
*/
130 pfowler 37 
 
38 
char* tick_addr;
39 
 
40 
void sysclockInit(void) {
132 pfowler 41 
	TIMSK = (1<<TOIE0);             // Eable timer overflow for Timer0
130 pfowler 42 
	TCCR0B = (1 << CS00) ;          // /1 prescaler
43 
	TCNT0 = 0x00;                   // Set Timer0 to 0
44 
}
45 
 
46 
void swap_u8(uint8_t* a, uint8_t* b) {
47 
	uint8_t t = *b;
48 
	*b = *a;
49 
	*a = t;
50 
}
51 
 
52 
void swap_u16(uint16_t* a, uint16_t* b) {
53 
	uint16_t t = *b;
54 
	*b = *a;
55 
	*a = t;
56 
}
57 
 
58 
/*
59 
 * Convert from a uint32 to BCD
60 
 * Use like:
61 
 * 	uint8_t[10] values; itobcd(ui32num, values);
62 
 * 	values will be an array with BCD digits
63 
 * 	returned value will be how many digits used
64 
 */
65 
uint8_t itobcd(uint32_t val, uint8_t *result) {
66 
  char BCD_text[10]; // max 10 digits on uint32
67 
  uint8_t i = 0;
68 
 
69 
  itoa(val, BCD_text, 10);
70 
  while(BCD_text[i]) {
71 
    result[i] = BCD_text[i]-'0';
72 
    i++;
73 
  }
74 
  return i;
75 
}
76