241 lines
6.7 KiB
C
241 lines
6.7 KiB
C
/*
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* Copyright (c) 2015 Bernhard Trinnes
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* \file
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*
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* \brief
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* Smart Grid Ready Module - guhRF
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*
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* \author
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* Bernhard Trinnes bernhard.trinnes@guh.guru
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guh Gmbh
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*
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*/
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#include "sg-ready.h"
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#include <util/delay.h>
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#if DEBUG
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#include <stdio.h>
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#define PRINTF(...) printf(__VA_ARGS__)
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#else
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#define PRINTF(...)
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#endif
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/**
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* \addtogroup relay
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* \{
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*/
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/*---------------------------------------------------------------------------*/
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/**
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* \brief init RELAY PINS - direction & pull-ups
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*/
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void
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sg_relay_init(uint8_t state)
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{
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/*2 latching dual coal relay
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RELAY 1 Coil 1 PB4 - ON
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Coil 2 PB5 - OFF
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Feedback PD5
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RELAY 2 Coil 1 PB6 - ON
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Coil 2 PB7 - OFF
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Feedback PD7
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*/
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PRINTF("SET DDRB\n");
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DDRB |= (RELAY1_ON | RELAY1_OFF | RELAY2_ON | RELAY2_OFF);
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PRINTF("SET PORTB\n");
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PORTB &= ~(RELAY1_ON | RELAY1_OFF | RELAY2_ON | RELAY2_OFF);
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PRINTF("SET DDRD\n");
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DDRD &= ~(RELAY1_FB | RELAY2_FB);
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PRINTF("SET PORTD\n");
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PORTD |= (RELAY1_FB | RELAY2_FB);
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PRINTF("SET STATE\n");
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sg_set_state(state); // set default state - heat pump normal operation
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}
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/**
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* \brief
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*/
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void
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sg_set_state(uint8_t state)
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{
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/* State 1 - Relays 1:0
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State 2 - Relays 0:0
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State 3 - Relays 0:1
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State 4 - Relays 1:1
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*/
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uint8_t i = 0;
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uint8_t current_state;
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PRINTF("GET STATE\n");
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current_state = sg_get_state();
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PRINTF("SET DIFFERENCE: %u %u\n", current_state, state);
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sg_switch_difference(current_state, state);
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/* while ( i<=3 || (current_state != state)){
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i++;
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sg_switch_difference(current_state, state);
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current_state = sg_get_state();
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}
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*/
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}
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/**
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* \brief
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*/
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uint8_t
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sg_get_state()
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{
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uint8_t state;
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/* Pull up -> Pin high = Relay Open */
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if ((~PIND & RELAY1_FB) && (~PIND & RELAY2_FB)){
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state = 4;
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}else if (~PIND & RELAY1_FB){
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state = 1;
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} else if (~PIND & RELAY2_FB){
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state = 3;
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} else {
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state = 2;
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}
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return state;
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}
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/**
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* \brief
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*/
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void
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sg_switch_difference(uint8_t old_state, uint8_t new_state)
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{
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switch(old_state) {
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case 1:
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switch(new_state) {
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case 2:
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PORTB |= RELAY1_OFF;
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PORTB &= ~(RELAY1_ON | RELAY2_ON | RELAY2_OFF);
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_delay_us(LATCH_TIME);
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PORTB &= ~(RELAY1_OFF);
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break;
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case 3:
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PORTB |= (RELAY1_OFF | RELAY2_ON );
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PORTB &= ~(RELAY1_ON | RELAY2_OFF);
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_delay_us(LATCH_TIME);
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PORTB &= ~(RELAY1_OFF | RELAY2_ON);
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break;
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case 4:
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PORTB |= RELAY2_ON;
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PORTB &= ~(RELAY1_ON | RELAY1_OFF | RELAY2_OFF);
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_delay_us(LATCH_TIME);
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PORTB &= ~(RELAY2_ON);
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break;
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}
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break;
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case 2:
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switch(new_state) {
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case 1:
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PORTB |= RELAY1_ON;
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PORTB &= ~(RELAY1_OFF | RELAY2_ON | RELAY2_OFF);
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_delay_us(LATCH_TIME);
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PORTB &= ~(RELAY1_ON);
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break;
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case 3:
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PORTB |= (RELAY2_ON);
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PORTB &= ~(RELAY1_ON | RELAY1_OFF | RELAY2_OFF);
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_delay_us(LATCH_TIME);
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PORTB &= ~(RELAY2_ON);
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break;
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case 4:
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PORTB |= (RELAY1_ON | RELAY2_ON);
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PORTB &= ~(RELAY1_OFF | RELAY2_OFF);
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_delay_us(LATCH_TIME);
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PORTB &= ~(RELAY1_ON | RELAY2_ON);
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break;
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}
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break;
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case 3:
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switch(new_state) {
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case 1:
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PORTB |= (RELAY1_ON | RELAY2_OFF);
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PORTB &= ~(RELAY1_OFF | RELAY2_ON);
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_delay_us(LATCH_TIME);
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PORTB &= ~(RELAY1_ON | RELAY2_OFF);
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break;
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case 2:
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PORTB |= RELAY2_OFF;
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PORTB &= ~(RELAY1_ON | RELAY1_OFF | RELAY2_ON);
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_delay_us(LATCH_TIME);
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PORTB &= ~(RELAY2_OFF);
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break;
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case 4:
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PORTB |= RELAY1_ON;
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PORTB &= ~(RELAY1_OFF | RELAY2_ON | RELAY2_OFF);
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_delay_us(LATCH_TIME);
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PORTB &= ~(RELAY1_ON);
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break;
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}
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break;
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case 4:
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switch(new_state) {
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case 1:
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PORTB |= RELAY2_OFF;
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PORTB &= ~(RELAY1_ON | RELAY1_OFF | RELAY2_ON);
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_delay_us(LATCH_TIME);
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PORTB &= ~(RELAY2_OFF);
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break;
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case 2:
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PORTB |= (RELAY1_OFF | RELAY2_OFF);
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PORTB &= ~(RELAY1_ON | RELAY2_ON );
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_delay_us(LATCH_TIME);
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PORTB &= ~(RELAY1_OFF | RELAY2_OFF);
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break;
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case 3:
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PORTB |= RELAY1_OFF;
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PORTB &= ~(RELAY1_ON | RELAY2_ON | RELAY2_OFF);
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_delay_us(LATCH_TIME);
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PORTB &= ~(RELAY1_OFF);
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break;
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}
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break;
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}
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}
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