base.h

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/*
 *  This file is part of the Home2L project.
 *
 *  (C) 2015-2021 Gundolf Kiefer
 *
 *  Home2L 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
 *  (at your option) any later version.
 *
 *  Home2L 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 Home2L. If not, see <https://www.gnu.org/licenses/>.
 *
 */
 
 
#ifndef _BASE_
#define _BASE_
 
 
#include <avr/io.h>
 
#include "interface.h"
 
 
 
 
 
// *************************** Basic Helpers ***********************************
 
 
 
#define INIT(NAME,VAL) if ((VAL) != 0) NAME = (VAL);
 
 
#define LO(X) ((X) & 0xff)      
#define HI(X) ((X) >> 8)        
#define HILO(H,L) ((((uint16_t) (H)) << 8) | (L))
 
 
#define SHIFT_OF_MASK(X) (((X) & 0x01) ? 0 : ((X) & 0x02) ? 1 : ((X) & 0x04) ? 2 : ((X) & 0x08) ? 3 \
                        : ((X) & 0x10) ? 4 : ((X) & 0x20) ? 5 : ((X) & 0x40) ? 6 : ((X) & 0x80) ? 7 : 8)
 
 
 
 
 
// ********************* MCU Port Access Macros ********************************
 
 
 
#define P_A0 0x0001
#define P_A1 0x0002
#define P_A2 0x0004
#define P_A3 0x0008
#define P_A4 0x0010
#define P_A5 0x0020
#define P_A6 0x0040
#define P_A7 0x0080
 
#define P_B0 0x0100
#define P_B1 0x0200
#define P_B2 0x0400
#define P_B3 0x0800
#define P_B4 0x1000
#define P_B5 0x2000
#define P_B6 0x4000
#define P_B7 0x8000
 
 
#if (defined(PINA) && defined(PORTA) && defined(DDRA)) || DOXYGEN
 
 
#define P_IN(P) (LO(P) ? (PINA & LO(P)) : HI(P) ? (PINB & HI(P)) : 0)
#define P_IN_MULTI(MASK) ((LO(MASK) ? (PINA & LO(MASK)) : 0) | (HI(MASK) ? ((uint16_t) (PINB & HI(MASK))) << 8 : 0))
 
#define P_OUT_0(P) do { if (LO(P)) PORTA &= ~LO(P); if (HI(P)) PORTB &= ~HI(P); } while(0)
#define P_OUT_1(P) do { if (LO(P)) PORTA |=  LO(P); if (HI(P)) PORTB |=  HI(P); } while(0)
#define P_OUT_MULTI(MASK, P) do {                                   \
      if (LO(MASK)) PORTA = (PORTA & ~LO(MASK)) | (LO(P) & LO(MASK)); \
      if (HI(MASK)) PORTB = (PORTB & ~HI(MASK)) | (HI(P) & HI(MASK)); \
    } while(0)
 
#define P_DDR_IN(P)   do { if (LO(P)) DDRA &= ~LO(P); if (HI(P)) DDRB &= ~HI(P); } while(0)
#define P_DDR_OUT(P)  do { if (LO(P)) DDRA |=  LO(P); if (HI(P)) DDRB |=  HI(P); } while(0)
 
 
#else   // defined(PINA) && defined(PORTA) && defined(DDRA)
 
 
#define P_IN(P) (HI(P) ? (PINB & HI(P)) : 0)
#define P_IN_MULTI(MASK) ((HI(MASK) ? ((uint16_t) (PINB & HI(MASK))) << 8 : 0))
 
#define P_OUT_0(P) do { if (HI(P)) PORTB &= ~HI(P); } while(0)
#define P_OUT_1(P) do { if (HI(P)) PORTB |=  HI(P); } while(0)
#define P_OUT_MULTI(MASK, P) do { if (HI(MASK)) PORTB = (PORTB & ~HI(MASK)) | (HI(P) & HI(MASK)); } while(0)
 
#define P_DDR_IN(P)   do { if (HI(P)) DDRB &= ~HI(P); } while(0)
#define P_DDR_OUT(P)  do { if (HI(P)) DDRB |=  HI(P); } while(0)
 
 
#endif  // defined(PINA) && defined(PORTA) && defined(DDRA)
 
 
 
 
 
// *************************** MCU Type ****************************************
 
 
 
#if DOXYGEN
#define MCU_TYPE    
#endif
 
 
#if defined(__AVR_ATtiny85__)
#define MCU_TYPE BR_MCU_ATTINY85
#endif
 
#if defined(__AVR_ATtiny84__) || defined(__AVR_ATtiny84A__)
#define MCU_TYPE BR_MCU_ATTINY84
#endif
 
#if defined(__AVR_ATtiny861__) || defined(__AVR_ATtiny861A__)
#define MCU_TYPE BR_MCU_ATTINY861
#endif
 
#ifndef MCU_TYPE
#error "Unsupported MCU type!"
#endif
 
 
 
 
 
#endif // _BASE_