Индикация на трёх семи сегментных трёх знаковых светодиодных индикаторах через SPI

Материал из Automata.

(Различия между версиями)
Перейти к: навигация, поиск
(Новая: #include <stdint.h> #include <avr/io.h> #include <avr/interrupt.h> //MISO - RCK; #define LATCH 0x40 - →0 - /*...)
м
Строка 1: Строка 1:
-
#include <stdint.h>
+
#include <stdint.h>
-
#include <avr/io.h>
+
#include <avr/io.h>
-
#include <avr/interrupt.h>
+
#include <avr/interrupt.h>
-
//MISO - RCK;
+
//MISO - RCK;
-
#define LATCH 0x40
+
#define LATCH 0x40
-
/*0*/ /*1*/ /*2*/ /*3*/ /*4*/ /*5*/ /*6*/ /*7*/ /*8*/ /*9*/ /*.*/
+
-
static const uint8_t LEDS[11] = {~0x5f,~0x42,~0x37,~0x76,~0x6a,~0x7c,~0x7d,~0x46,~0x7f,~0x7e,~0x00 };
+
-
static volatile uint8_t i = 0;
+
-
void Indicate (void)
+
/*0*/ /*1*/ /*2*/ /*3*/ /*4*/ /*5*/ /*6*/ /*7*/ /*8*/ /*9*/ /*.*/
-
{
+
static const uint8_t LEDS[11] = {~0x5f,~0x42,~0x37,~0x76,~0x6a,~0x7c,~0x7d,~0x46,~0x7f,~0x7e,~0x00 };
-
SPCR |= _BV(SPE);
+
static volatile uint8_t i = 0;
 +
void Indicate (void)
 +
{
 +
SPCR |= _BV(SPE);
 +
register uint8_t k;
register uint8_t k;
for (k = 0; k < 9; k++)
for (k = 0; k < 9; k++)
Строка 19: Строка 20:
while (!(SPSR & _BV(SPIF)));
while (!(SPSR & _BV(SPIF)));
}
}
-
 
+
SPCR &= ~_BV(SPE);
SPCR &= ~_BV(SPE);
-
 
+
PORTB |= LATCH;
PORTB |= LATCH;
PORTB &= ~LATCH;
PORTB &= ~LATCH;
-
}
+
}
-
ISR (TIMER1_COMPA_vect)
+
ISR (TIMER1_COMPA_vect)
-
{
+
{
Indicate();
Indicate();
if (i++ == 9)
if (i++ == 9)
i = 0;
i = 0;
-
}
+
}
-
int main (void)
+
int main (void)
-
{
+
{
DDRB = 0xff;
DDRB = 0xff;
PORTB = 0x00;
PORTB = 0x00;
-
 
+
SPCR = _BV(SPE) | _BV(MSTR) | _BV(SPR1);
SPCR = _BV(SPE) | _BV(MSTR) | _BV(SPR1);
-
 
+
TCCR1B = _BV(WGM12) | _BV(CS12);
TCCR1B = _BV(WGM12) | _BV(CS12);
TIMSK = _BV(OCIE1A);
TIMSK = _BV(OCIE1A);
OCR1A = 11250;
OCR1A = 11250;
-
 
+
sei();
sei();
-
 
+
while (1);
while (1);
-
}
+
}

Версия 20:23, 16 января 2010

#include <stdint.h>                 
#include <avr/io.h>                 
#include <avr/interrupt.h>          

//MISO - RCK;
#define LATCH 0x40

                                 /*0*/ /*1*/ /*2*/ /*3*/ /*4*/ /*5*/ /*6*/ /*7*/ /*8*/ /*9*/ /*.*/
static const uint8_t LEDS[11] = {~0x5f,~0x42,~0x37,~0x76,~0x6a,~0x7c,~0x7d,~0x46,~0x7f,~0x7e,~0x00 };
static volatile uint8_t i = 0;

void Indicate (void)
{
   SPCR |= _BV(SPE);

   register uint8_t k;
   for (k = 0; k < 9; k++)
   {
       SPDR = i == k  ? LEDS[k+1] : 0xFF;
       while (!(SPSR & _BV(SPIF)));
   }

   SPCR &= ~_BV(SPE);

   PORTB |= LATCH;
   PORTB &= ~LATCH;
}

ISR (TIMER1_COMPA_vect)
{
   Indicate();
   if (i++ == 9)
       i = 0;
}

int main (void)
{
   DDRB  = 0xff;
   PORTB = 0x00;

   SPCR  = _BV(SPE) | _BV(MSTR) | _BV(SPR1);

   TCCR1B = _BV(WGM12) | _BV(CS12);
   TIMSK  = _BV(OCIE1A);
   OCR1A  = 11250;

   sei();

   while (1);
}
Получено с http://automata.sgu.ru/wiki/%C3%90%CB%9C%C3%90%C2%BD%C3%90%C2%B4%C3%90%C2%B8%C3%90%C2%BA%C3%90%C2%B0%C3%91%E2%80%A0%C3%90%C2%B8%C3%91%C2%8F_%C3%90%C2%BD%C3%90%C2%B0_%C3%91%E2%80%9A%C3%91%E2%82%AC%C3%91%E2%80%98%C3%91%E2%80%A6_%C3%91%C2%81%C3%90%C2%B5%C3%90%C2%BC%C3%90%C2%B8_%C3%91%C2%81%C3%90%C2%B5%C3%90%C2%B3%C3%90%C2%BC%C3%90%C2%B5%C3%90%C2%BD%C3%91%E2%80%9A%C3%90%C2%BD%C3%91%E2%80%B9%C3%91%E2%80%A6_%C3%91%E2%80%9A%C3%91%E2%82%AC%C3%91%E2%80%98%C3%91%E2%80%A6_%C3%90%C2%B7%C3%90%C2%BD%C3%90%C2%B0%C3%90%C2%BA%C3%90%C2%BE%C3%90%C2%B2%C3%91%E2%80%B9%C3%91%E2%80%A6_%C3%91%C2%81%C3%90%C2%B2%C3%90%C2%B5%C3%91%E2%80%9A%C3%90%C2%BE%C3%90%C2%B4%C3%90%C2%B8%C3%90%C2%BE%C3%90%C2%B4%C3%90%C2%BD%C3%91%E2%80%B9%C3%91%E2%80%A6_%C3%90%C2%B8%C3%90%C2%BD%C3%90%C2%B4%C3%90%C2%B8%C3%90%C2%BA%C3%90%C2%B0%C3%91%E2%80%9A%C3%90%C2%BE%C3%91%E2%82%AC%C3%90%C2%B0%C3%91%E2%80%A6_%C3%91%E2%80%A1%C3%90%C2%B5%C3%91%E2%82%AC%C3%90%C2%B5%C3%90%C2%B7_SPI
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