219 lines
6.4 KiB
C
219 lines
6.4 KiB
C
/*
|
|
* Copyright (c) 2015 Bernhard Trinnes
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* * Neither the name of the copyright holders nor the names of
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
/**
|
|
* \file
|
|
*
|
|
* \brief
|
|
* Smart Grid Ready Module - guhRF
|
|
*
|
|
* \author
|
|
* Bernhard Trinnes bernhard.trinnes@guh.guru
|
|
*
|
|
*/
|
|
|
|
#include "sg-ready.h"
|
|
#define LATCH_TIME 3000 // time in micro seconds
|
|
|
|
#define RELAY1_ON (1<<DDRB4)
|
|
#define RELAY1_OFF (1<<DDRB5)
|
|
#define RELAY2_ON (1<<DDRB6)
|
|
#define RELAY2_OFF (1<<DDRB7)
|
|
#define RELAY1_FB (1<<DDRD5)
|
|
#define RELAY2_FB (1<<DDRD7)
|
|
|
|
/**
|
|
* \addtogroup relay
|
|
* \{
|
|
*/
|
|
/*---------------------------------------------------------------------------*/
|
|
/**
|
|
* \brief init RELAY PINS - direction & pull-ups
|
|
*/
|
|
void
|
|
releay_init()
|
|
{
|
|
/*2 latching dual coal relay
|
|
RELAY 1 Coil 1 PB4 - ON
|
|
Coil 2 PB5 - OFF
|
|
Feedback PD5
|
|
RELAY 2 Coil 1 PB6 - ON
|
|
Coil 2 PB7 - OFF
|
|
Feedback PD7
|
|
|
|
*/
|
|
DDRB |= (RELAY1_ON | RELAY1_OFF | RELAY2_ON | RELAY2_OFF);
|
|
PORTB &= ~(RELAY1_ON | RELAY1_OFF | RELAY2_ON | RELAY2_OFF);
|
|
|
|
DDRD &= ~(RELAY1_FB | RELAY2_FB);
|
|
PORTD |= (RELAY1_FB | RELAY2_FB);
|
|
}
|
|
/**
|
|
* \brief
|
|
*/
|
|
|
|
void
|
|
set_state(uint8_t state)
|
|
{
|
|
/* State 1 - Relays 1:0
|
|
State 2 - Relays 0:0
|
|
State 3 - Relays 0:1
|
|
State 4 - Relays 1:1
|
|
*/
|
|
uint8_t i = 0;
|
|
uint8_t current_state;
|
|
current_state = get_state();
|
|
while ( i<=3 || (current_state != state)){
|
|
i++;
|
|
switch_difference(current_state, state);
|
|
current_state = get_state();
|
|
}
|
|
}
|
|
/**
|
|
* \brief
|
|
*/
|
|
|
|
|
|
uint8_t
|
|
get_state()
|
|
{
|
|
uint8_t state;
|
|
/* Pull up -> Pin high = Relay Open */
|
|
if ((~PIND & RELAY1_FB) && (~PIND & RELAY2_FB)){
|
|
state = 4;
|
|
}else if (~PIND & RELAY1_FB){
|
|
state = 1;
|
|
} else if (~PIND & RELAY2_FB){
|
|
state = 3;
|
|
} else {
|
|
state = 2;
|
|
}
|
|
return state;
|
|
}
|
|
/**
|
|
* \brief
|
|
*/
|
|
|
|
void
|
|
switch_difference(uint8_t old, uint8_t new)
|
|
{
|
|
switch(old) {
|
|
case 1:
|
|
switch(new) {
|
|
case 2:
|
|
PORTB |= RELAY1_OFF;
|
|
PORTB &= ~(RELAY1_ON | RELAY2_ON | RELAY2_OFF);
|
|
clock_delay_usec (LATCH_TIME);
|
|
PORTB &= ~(RELAY1_OFF);
|
|
break;
|
|
case 3:
|
|
PORTB |= (RELAY1_OFF | RELAY2_ON );
|
|
PORTB &= ~(RELAY1_ON | RELAY2_OFF);
|
|
clock_delay_usec (LATCH_TIME);
|
|
PORTB &= ~(RELAY1_OFF | RELAY2_ON);
|
|
break;
|
|
case 4:
|
|
PORTB |= RELAY2_ON;
|
|
PORTB &= ~(RELAY1_ON | RELAY1_OFF | RELAY2_OFF);
|
|
clock_delay_usec (LATCH_TIME);
|
|
PORTB &= ~(RELAY2_ON);
|
|
break;
|
|
}
|
|
break;
|
|
case 2:
|
|
switch(new) {
|
|
case 1:
|
|
PORTB |= RELAY1_ON;
|
|
PORTB &= ~(RELAY1_OFF | RELAY2_ON | RELAY2_OFF);
|
|
clock_delay_usec (LATCH_TIME);
|
|
PORTB &= ~(RELAY1_ON);
|
|
break;
|
|
case 3:
|
|
PORTB |= (RELAY2_ON);
|
|
PORTB &= ~(RELAY1_ON | RELAY1_OFF | RELAY2_OFF);
|
|
clock_delay_usec (LATCH_TIME);
|
|
PORTB &= ~(RELAY2_ON);
|
|
break;
|
|
case 4:
|
|
PORTB |= (RELAY1_ON | RELAY2_ON);
|
|
PORTB &= ~(RELAY1_OFF | RELAY2_OFF);
|
|
clock_delay_usec (LATCH_TIME);
|
|
PORTB &= ~(RELAY1_ON | RELAY2_ON);
|
|
break;
|
|
}
|
|
|
|
break;
|
|
case 3:
|
|
switch(new) {
|
|
case 1:
|
|
PORTB |= (RELAY1_ON | RELAY2_OFF);
|
|
PORTB &= ~(RELAY1_OFF | RELAY2_ON);
|
|
clock_delay_usec (LATCH_TIME);
|
|
PORTB &= ~(RELAY1_ON | RELAY2_OFF);
|
|
break;
|
|
case 2:
|
|
PORTB |= RELAY2_OFF;
|
|
PORTB &= ~(RELAY1_ON | RELAY1_OFF | RELAY2_ON);
|
|
clock_delay_usec (LATCH_TIME);
|
|
PORTB &= ~(RELAY2_OFF);
|
|
break;
|
|
case 4:
|
|
PORTB |= RELAY1_ON;
|
|
PORTB &= ~(RELAY1_OFF | RELAY2_ON | RELAY2_OFF);
|
|
clock_delay_usec (LATCH_TIME);
|
|
PORTB &= ~(RELAY1_ON);
|
|
break;
|
|
}
|
|
break;
|
|
case 4:
|
|
switch(new) {
|
|
case 1:
|
|
PORTB |= RELAY2_OFF;
|
|
PORTB &= ~(RELAY1_ON | RELAY1_OFF | RELAY2_ON);
|
|
clock_delay_usec (LATCH_TIME);
|
|
PORTB &= ~(RELAY2_OFF);
|
|
break;
|
|
case 2:
|
|
PORTB |= (RELAY1_OFF | RELAY2_OFF);
|
|
PORTB &= ~(RELAY1_ON | RELAY2_ON );
|
|
clock_delay_usec (LATCH_TIME);
|
|
PORTB &= ~(RELAY1_OFF | RELAY2_OFF);
|
|
break;
|
|
case 3:
|
|
PORTB |= RELAY1_OFF;
|
|
PORTB &= ~(RELAY1_ON | RELAY2_ON | RELAY2_OFF);
|
|
clock_delay_usec (LATCH_TIME);
|
|
PORTB &= ~(RELAY1_OFF);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|