Ð˜Ð½Ð´Ð¸ÐºÐ°Ñ†Ð¸Ñ Ð½Ð° двух Ñеми Ñегментных двух знаковых Ñветодиодных индикаторах через SPI
Материал из Automata.
(Различия между версиями)
м (Полностью удалено содержимое страницы) |
(Отмена правки № 1786 участника Kern (обсуждение)) |
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+ | #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] = { 0x03, 0x9F, 0x25, 0x0D, 0x99, 0x49, 0x41, 0x1F, 0x01, 0x09, 0xFE }; | ||
+ | static volatile uint8_t counts[4]; | ||
+ | static volatile uint16_t data = 0; | ||
+ | |||
+ | void Indicate(uint16_t data) | ||
+ | { | ||
+ | counts[3] = data % 10; | ||
+ | data /= 10; | ||
+ | counts[2] = data % 10; | ||
+ | data /= 10; | ||
+ | counts[1] = data % 10; | ||
+ | data /= 10; | ||
+ | counts[0] = data % 10; | ||
+ | data /= 10; | ||
+ | |||
+ | SPCR |= _BV(SPE); | ||
+ | |||
+ | register uint8_t j; | ||
+ | for (j = 0; j < 4; j++) | ||
+ | { | ||
+ | SPDR = ( j == 1 ) ? ( LEDS[counts[j]] & LEDS[10] ) : ( LEDS[counts[j]] ); | ||
+ | while (!(SPSR & _BV(SPIF))); | ||
+ | } | ||
+ | |||
+ | SPCR &= ~_BV(SPE); | ||
+ | |||
+ | PORTB |= LATCH; | ||
+ | PORTB &= ~LATCH; | ||
+ | } | ||
+ | |||
+ | |||
+ | ISR (TIMER0_COMP_vect) | ||
+ | { | ||
+ | if (data == 10000) | ||
+ | data = 0; | ||
+ | |||
+ | Indicate(data++); | ||
+ | } | ||
+ | |||
+ | int main (void) | ||
+ | { | ||
+ | DDRB = 0xff; | ||
+ | PORTB = 0x00; | ||
+ | |||
+ | SPCR = _BV(SPE) | _BV(MSTR) | _BV(SPR1); | ||
+ | |||
+ | TCCR0 = _BV(WGM01) | _BV(CS02) | _BV(CS00); | ||
+ | TIMSK = _BV(OCIE0); | ||
+ | OCR0 = 78; | ||
+ | //78'''.125''' t = 0.01 s * 8/1024 MHz; | ||
+ | |||
+ | |||
+ | sei(); | ||
+ | |||
+ | while (1); | ||
+ | } |
Текущая версия
#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] = { 0x03, 0x9F, 0x25, 0x0D, 0x99, 0x49, 0x41, 0x1F, 0x01, 0x09, 0xFE }; static volatile uint8_t counts[4]; static volatile uint16_t data = 0;
void Indicate(uint16_t data) { counts[3] = data % 10; data /= 10; counts[2] = data % 10; data /= 10; counts[1] = data % 10; data /= 10; counts[0] = data % 10; data /= 10; SPCR |= _BV(SPE); register uint8_t j; for (j = 0; j < 4; j++) { SPDR = ( j == 1 ) ? ( LEDS[counts[j]] & LEDS[10] ) : ( LEDS[counts[j]] ); while (!(SPSR & _BV(SPIF))); } SPCR &= ~_BV(SPE); PORTB |= LATCH; PORTB &= ~LATCH; }
ISR (TIMER0_COMP_vect) { if (data == 10000) data = 0; Indicate(data++); }
int main (void) { DDRB = 0xff; PORTB = 0x00; SPCR = _BV(SPE) | _BV(MSTR) | _BV(SPR1); TCCR0 = _BV(WGM01) | _BV(CS02) | _BV(CS00); TIMSK = _BV(OCIE0); OCR0 = 78; //78.125 t = 0.01 s * 8/1024 MHz; sei(); while (1); }