diff options
author | Christian Pointner <equinox@spreadspace.org> | 2015-02-24 23:23:30 +0100 |
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committer | Christian Pointner <equinox@spreadspace.org> | 2015-02-24 23:23:30 +0100 |
commit | 1193ef26a1f1431d4974a0235cd923786509bab1 (patch) | |
tree | b2b6c74003a8531c746b33dbcf3a88715cca6534 /tuer-rfid/heartbeat.c | |
parent | moved tube-rotator to realraum github repo (diff) |
moved tuer-rfid to realraum github repo
Diffstat (limited to 'tuer-rfid/heartbeat.c')
-rw-r--r-- | tuer-rfid/heartbeat.c | 74 |
1 files changed, 0 insertions, 74 deletions
diff --git a/tuer-rfid/heartbeat.c b/tuer-rfid/heartbeat.c deleted file mode 100644 index b656521..0000000 --- a/tuer-rfid/heartbeat.c +++ /dev/null @@ -1,74 +0,0 @@ -/* - * spreadspace avr utils - * - * - * Copyright (C) 2013-2014 Christian Pointner <equinox@spreadspace.org> - * Othmar Gsenger <otti@wirdorange.org> - * - * This file is part of spreadspace avr utils. - * - * spreadspace avr utils is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 3 of the License, or - * any later version. - * - * spreadspace avr utils is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with spreadspace avr utils. If not, see <http://www.gnu.org/licenses/>. - */ - -#include <avr/sfr_defs.h> -#include <avr/interrupt.h> - -#include "led.h" -#include "heartbeat.h" - -#define HEARTBEAT_DURATION 10 // *10 ms, duration of heartbeat pulse -#define HEARTBEAT_DELAY 200 // *10 ms, 1/heartbeat-frequency -uint8_t heartbeat_cnt = 0; -uint8_t heartbeat_flag; - -#define FASTBEAT_PORT PORTD -#define FASTBEAT_DDR DDRD -#define FASTBEAT_BIT 5 - -// while running this gets called every ~10ms -ISR(TIMER0_COMPA_vect) -{ - heartbeat_cnt++; - if(heartbeat_cnt == HEARTBEAT_DURATION) - heartbeat_flag = 0; - else if(heartbeat_cnt >= HEARTBEAT_DELAY) { - heartbeat_flag = 1; - heartbeat_cnt = 0; - } -} - -void heartbeat_init(void) -{ - led_off(); - heartbeat_cnt = 0; - heartbeat_flag = 1; - - TCCR0A = 1<<WGM01; // OC0A and OC0B as normal output, WGM = 2 (CTC) - TCCR0B = 1<<CS02 | 1<<CS00; // Prescaler 1:1024 - OCR0A = 155; // (1+155)*1024 = 159744 -> ~10 ms @ 16 MHz - TCNT0 = 0; - TIMSK0 = 1<<OCIE0A; - - FASTBEAT_DDR |= 1<<FASTBEAT_BIT; -} - -void heartbeat_task(void) -{ - FASTBEAT_PORT ^= 1<<FASTBEAT_BIT; - - if(heartbeat_flag) - led_on(); - else - led_off(); -} |