PIO hinzugefügt

pio/dmode.h

@@ -0,0 +1,248 @@
+/***
+ * dmode.h
+ * This file is part of the PIO library.
+ * For license information see "pio.h" in the parent directory.
+ */
+
+#if !defined(PIOLIB) || PIOLIB < 100
+#error This file should be included directly. Use "pio.h" instead.
+#endif
+
+#ifndef PIO_DMODE_H
+#define PIO_DMODE_H
+
+#define dMode(A, B) dMode_(A, B)
+#define dMode_(A, B) DMODE ## _ ## A ## _ ## B
+
+#ifdef PA0
+#define DMODE_A0_1 DDRA |= 0x01
+#define DMODE_A0_0 DDRA &= 0xFE
+#else
+#define DMODE_A0_1 # Pin A0 not supported on this MCU!
+#define DMODE_A0_0 DMODE_A0_1
+#endif
+#ifdef PA1
+#define DMODE_A1_1 DDRA |= 0x02
+#define DMODE_A1_0 DDRA &= 0xFD
+#else
+#define DMODE_A1_1 # Pin A1 not supported on this MCU!
+#define DMODE_A1_0 DMODE_A1_1
+#endif
+#ifdef PA2
+#define DMODE_A2_1 DDRA |= 0x04
+#define DMODE_A2_0 DDRA &= 0xFB
+#else
+#define DMODE_A2_1 # Pin A2 not supported on this MCU!
+#define DMODE_A2_0 DMODE_A2_1
+#endif
+#ifdef PA3
+#define DMODE_A3_1 DDRA |= 0x08
+#define DMODE_A3_0 DDRA &= 0xF7
+#else
+#define DMODE_A3_1 # Pin A3 not supported on this MCU!
+#define DMODE_A3_0 DMODE_A3_1
+#endif
+#ifdef PA4
+#define DMODE_A4_1 DDRA |= 0x10
+#define DMODE_A4_0 DDRA &= 0xEF
+#else
+#define DMODE_A4_1 # Pin A4 not supported on this MCU!
+#define DMODE_A4_0 DMODE_A4_1
+#endif
+#ifdef PA5
+#define DMODE_A5_1 DDRA |= 0x20
+#define DMODE_A5_0 DDRA &= 0xDF
+#else
+#define DMODE_A5_1 # Pin A5 not supported on this MCU!
+#define DMODE_A5_0 DMODE_A5_1
+#endif
+#ifdef PA6
+#define DMODE_A6_1 DDRA |= 0x40
+#define DMODE_A6_0 DDRA &= 0xBF
+#else
+#define DMODE_A6_1 # Pin A6 not supported on this MCU!
+#define DMODE_A6_0 DMODE_A6_1
+#endif
+#ifdef PA7
+#define DMODE_A7_1 DDRA |= 0x80
+#define DMODE_A7_0 DDRA &= 0x7F
+#else
+#define DMODE_A7_1 # Pin A7 not supported on this MCU!
+#define DMODE_A7_0 DMODE_A7_1
+#endif
+
+
+#ifdef PB0
+#define DMODE_B0_1 DDRB |= 0x01
+#define DMODE_B0_0 DDRB &= 0xFE
+#else
+#define DMODE_B0_1 # Pin B0 not supported on this MCU!
+#define DMODE_B0_0 DMODE_B0_1
+#endif
+#ifdef PB1
+#define DMODE_B1_1 DDRB |= 0x02
+#define DMODE_B1_0 DDRB &= 0xFD
+#else
+#define DMODE_B1_1 # Pin B1 not supported on this MCU!
+#define DMODE_B1_0 DMODE_B1_1
+#endif
+#ifdef PB2
+#define DMODE_B2_1 DDRB |= 0x04
+#define DMODE_B2_0 DDRB &= 0xFB
+#else
+#define DMODE_B2_1 # Pin B2 not supported on this MCU!
+#define DMODE_B2_0 DMODE_B2_1
+#endif
+#ifdef PB3
+#define DMODE_B3_1 DDRB |= 0x08
+#define DMODE_B3_0 DDRB &= 0xF7
+#else
+#define DMODE_B3_1 # Pin B3 not supported on this MCU!
+#define DMODE_B3_0 DMODE_B3_1
+#endif
+#ifdef PB4
+#define DMODE_B4_1 DDRB |= 0x10
+#define DMODE_B4_0 DDRB &= 0xEF
+#else
+#define DMODE_B4_1 # Pin B4 not supported on this MCU!
+#define DMODE_B4_0 DMODE_B4_1
+#endif
+#ifdef PB5
+#define DMODE_B5_1 DDRB |= 0x20
+#define DMODE_B5_0 DDRB &= 0xDF
+#else
+#define DMODE_B5_1 # Pin B5 not supported on this MCU!
+#define DMODE_B5_0 DMODE_B5_1
+#endif
+#ifdef PB6
+#define DMODE_B6_1 DDRB |= 0x40
+#define DMODE_B6_0 DDRB &= 0xBF
+#else
+#define DMODE_B6_1 # Pin B6 not supported on this MCU!
+#define DMODE_B6_0 DMODE_B6_1
+#endif
+#ifdef PB7
+#define DMODE_B7_1 DDRB |= 0x80
+#define DMODE_B7_0 DDRB &= 0x7F
+#else
+#define DMODE_B7_1 # Pin B7 not supported on this MCU!
+#define DMODE_B7_0 DMODE_B7_1
+#endif
+
+
+#ifdef PC0
+#define DMODE_C0_1 DDRC |= 0x01
+#define DMODE_C0_0 DDRC &= 0xFE
+#else
+#define DMODE_C0_1 # Pin C0 not supported on this MCU!
+#define DMODE_C0_0 DMODE_C0_1
+#endif
+#ifdef PC1
+#define DMODE_C1_1 DDRC |= 0x02
+#define DMODE_C1_0 DDRC &= 0xFD
+#else
+#define DMODE_C1_1 # Pin C1 not supported on this MCU!
+#define DMODE_C1_0 DMODE_C1_1
+#endif
+#ifdef PC2
+#define DMODE_C2_1 DDRC |= 0x04
+#define DMODE_C2_0 DDRC &= 0xFB
+#else
+#define DMODE_C2_1 # Pin C2 not supported on this MCU!
+#define DMODE_C2_0 DMODE_C2_1
+#endif
+#ifdef PC3
+#define DMODE_C3_1 DDRC |= 0x08
+#define DMODE_C3_0 DDRC &= 0xF7
+#else
+#define DMODE_C3_1 # Pin C3 not supported on this MCU!
+#define DMODE_C3_0 DMODE_C3_1
+#endif
+#ifdef PC4
+#define DMODE_C4_1 DDRC |= 0x10
+#define DMODE_C4_0 DDRC &= 0xEF
+#else
+#define DMODE_C4_1 # Pin C4 not supported on this MCU!
+#define DMODE_C4_0 DMODE_C4_1
+#endif
+#ifdef PC5
+#define DMODE_C5_1 DDRC |= 0x20
+#define DMODE_C5_0 DDRC &= 0xDF
+#else
+#define DMODE_C5_1 # Pin C5 not supported on this MCU!
+#define DMODE_C5_0 DMODE_C5_1
+#endif
+#ifdef PC6
+#define DMODE_C6_1 DDRC |= 0x40
+#define DMODE_C6_0 DDRC &= 0xBF
+#else
+#define DMODE_C6_1 # Pin C6 not supported on this MCU!
+#define DMODE_C6_0 DMODE_C6_1
+#endif
+#ifdef PC7
+#define DMODE_C7_1 DDRC |= 0x80
+#define DMODE_C7_0 DDRC &= 0x7F
+#else
+#define DMODE_C7_1 # Pin C7 not supported on this MCU!
+#define DMODE_C7_0 DMODE_C7_1
+#endif
+
+
+#ifdef PD0
+#define DMODE_D0_1 DDRD |= 0x01
+#define DMODE_D0_0 DDRD &= 0xFE
+#else
+#define DMODE_D0_1 # Pin D0 not supported on this MCU!
+#define DMODE_D0_0 DMODE_D0_1
+#endif
+#ifdef PD1
+#define DMODE_D1_1 DDRD |= 0x02
+#define DMODE_D1_0 DDRD &= 0xFD
+#else
+#define DMODE_D1_1 # Pin D1 not supported on this MCU!
+#define DMODE_D1_0 DMODE_D1_1
+#endif
+#ifdef PD2
+#define DMODE_D2_1 DDRD |= 0x04
+#define DMODE_D2_0 DDRD &= 0xFB
+#else
+#define DMODE_D2_1 # Pin D2 not supported on this MCU!
+#define DMODE_D2_0 DMODE_D2_1
+#endif
+#ifdef PD3
+#define DMODE_D3_1 DDRD |= 0x08
+#define DMODE_D3_0 DDRD &= 0xF7
+#else
+#define DMODE_D3_1 # Pin D3 not supported on this MCU!
+#define DMODE_D3_0 DMODE_D3_1
+#endif
+#ifdef PD4
+#define DMODE_D4_1 DDRD |= 0x10
+#define DMODE_D4_0 DDRD &= 0xEF
+#else
+#define DMODE_D4_1 # Pin D4 not supported on this MCU!
+#define DMODE_D4_0 DMODE_D4_1
+#endif
+#ifdef PD5
+#define DMODE_D5_1 DDRD |= 0x20
+#define DMODE_D5_0 DDRD &= 0xDF
+#else
+#define DMODE_D5_1 # Pin D5 not supported on this MCU!
+#define DMODE_D5_0 DMODE_D5_1
+#endif
+#ifdef PD6
+#define DMODE_D6_1 DDRD |= 0x40
+#define DMODE_D6_0 DDRD &= 0xBF
+#else
+#define DMODE_D6_1 # Pin D6 not supported on this MCU!
+#define DMODE_D6_0 DMODE_D6_1
+#endif
+#ifdef PD7
+#define DMODE_D7_1 DDRD |= 0x80
+#define DMODE_D7_0 DDRD &= 0x7F
+#else
+#define DMODE_D7_1 # Pin D7 not supported on this MCU!
+#define DMODE_D7_0 DMODE_D7_1
+#endif
+
+#endif // PIO_DMODE_H

pio/dread.h

@@ -0,0 +1,183 @@
+/***
+ * dread.h
+ * This file is part of the PIO library.
+ * For license information see "pio.h" in the parent directory.
+ */
+
+#if !defined(PIOLIB) || PIOLIB < 100
+#error This file should be included directly. Use "pio.h" instead.
+#endif
+
+#ifndef PIO_DREAD_H
+#define PIO_DREAD_H
+
+#define dRead(A) dRead_(A)
+#define dRead_(A) DREAD ## _ ## A
+
+#ifdef PA0
+#define DREAD_A0 (PINA & 0x01)
+#else
+#define DREAD_A0 # Pin A0 not supported on this MCU!
+#endif
+#ifdef PA1
+#define DREAD_A1 (PINA & 0x02)
+#else
+#define DREAD_A1 # Pin A1 not supported on this MCU!
+#endif
+#ifdef PA2
+#define DREAD_A2 (PINA & 0x04)
+#else
+#define DREAD_A2 # Pin A2 not supported on this MCU!
+#endif
+#ifdef PA3
+#define DREAD_A3 (PINA & 0x08)
+#else
+#define DREAD_A3 # Pin A3 not supported on this MCU!
+#endif
+#ifdef PA4
+#define DREAD_A4 (PINA & 0x10)
+#else
+#define DREAD_A4 # Pin A4 not supported on this MCU!
+#endif
+#ifdef PA5
+#define DREAD_A5 (PINA & 0x20)
+#else
+#define DREAD_A5 # Pin A5 not supported on this MCU!
+#endif
+#ifdef PA6
+#define DREAD_A6 (PINA & 0x40)
+#else
+#define DREAD_A6 # Pin A6 not supported on this MCU!
+#endif
+#ifdef PA7
+#define DREAD_A7 (PINA & 0x80)
+#else
+#define DREAD_A7 # Pin A7 not supported on this MCU!
+#endif
+
+
+#ifdef PB0
+#define DREAD_B0 (PINB & 0x01)
+#else
+#define DREAD_B0 # Pin B0 not supported on this MCU!
+#endif
+#ifdef PB1
+#define DREAD_B1 (PINB & 0x02)
+#else
+#define DREAD_B1 # Pin B1 not supported on this MCU!
+#endif
+#ifdef PB2
+#define DREAD_B2 (PINB & 0x04)
+#else
+#define DREAD_B2 # Pin B2 not supported on this MCU!
+#endif
+#ifdef PB3
+#define DREAD_B3 (PINB & 0x08)
+#else
+#define DREAD_B3 # Pin B3 not supported on this MCU!
+#endif
+#ifdef PB4
+#define DREAD_B4 (PINB & 0x10)
+#else
+#define DREAD_B4 # Pin B4 not supported on this MCU!
+#endif
+#ifdef PB5
+#define DREAD_B5 (PINB & 0x20)
+#else
+#define DREAD_B5 # Pin B5 not supported on this MCU!
+#endif
+#ifdef PB6
+#define DREAD_B6 (PINB & 0x40)
+#else
+#define DREAD_B6 # Pin B6 not supported on this MCU!
+#endif
+#ifdef PB7
+#define DREAD_B7 (PINB & 0x80)
+#else
+#define DREAD_B7 # Pin B7 not supported on this MCU!
+#endif
+
+
+#ifdef PC0
+#define DREAD_C0 (PINC & 0x01)
+#else
+#define DREAD_C0 # Pin C0 not supported on this MCU!
+#endif
+#ifdef PC1
+#define DREAD_C1 (PINC & 0x02)
+#else
+#define DREAD_C1 # Pin C1 not supported on this MCU!
+#endif
+#ifdef PC2
+#define DREAD_C2 (PINC & 0x04)
+#else
+#define DREAD_C2 # Pin C2 not supported on this MCU!
+#endif
+#ifdef PC3
+#define DREAD_C3 (PINC & 0x08)
+#else
+#define DREAD_C3 # Pin C3 not supported on this MCU!
+#endif
+#ifdef PC4
+#define DREAD_C4 (PINC & 0x10)
+#else
+#define DREAD_C4 # Pin C4 not supported on this MCU!
+#endif
+#ifdef PC5
+#define DREAD_C5 (PINC & 0x20)
+#else
+#define DREAD_C5 # Pin C5 not supported on this MCU!
+#endif
+#ifdef PC6
+#define DREAD_C6 (PINC & 0x40)
+#else
+#define DREAD_C6 # Pin C6 not supported on this MCU!
+#endif
+#ifdef PC7
+#define DREAD_C7 (PINC & 0x80)
+#else
+#define DREAD_C7 # Pin C7 not supported on this MCU!
+#endif
+
+
+#ifdef PD0
+#define DREAD_D0 (PIND & 0x01)
+#else
+#define DREAD_D0 # Pin D0 not supported on this MCU!
+#endif
+#ifdef PD1
+#define DREAD_D1 (PIND & 0x02)
+#else
+#define DREAD_D1 # Pin D1 not supported on this MCU!
+#endif
+#ifdef PD2
+#define DREAD_D2 (PIND & 0x04)
+#else
+#define DREAD_D2 # Pin D2 not supported on this MCU!
+#endif
+#ifdef PD3
+#define DREAD_D3 (PIND & 0x08)
+#else
+#define DREAD_D3 # Pin D3 not supported on this MCU!
+#endif
+#ifdef PD4
+#define DREAD_D4 (PIND & 0x10)
+#else
+#define DREAD_D4 # Pin D4 not supported on this MCU!
+#endif
+#ifdef PD5
+#define DREAD_D5 (PIND & 0x20)
+#else
+#define DREAD_D5 # Pin D5 not supported on this MCU!
+#endif
+#ifdef PD6
+#define DREAD_D6 (PIND & 0x40)
+#else
+#define DREAD_D6 # Pin D6 not supported on this MCU!
+#endif
+#ifdef PD7
+#define DREAD_D7 (PIND & 0x80)
+#else
+#define DREAD_D7 # Pin D7 not supported on this MCU!
+#endif
+#endif // PIO_DREAD_H

pio/dwrite.h

@@ -0,0 +1,249 @@
+/***
+ * dwrite.h
+ * This file is part of the PIO library.
+ * For license information see "pio.h" in the parent directory.
+ */
+
+#if !defined(PIOLIB) || PIOLIB < 100
+#error This file should be included directly. Use "pio.h" instead.
+#endif
+
+#ifndef PIO_DWRITE_H
+#define PIO_DWRITE_H
+
+#define dWrite(A, B) dWrite_(A, B)
+#define dWrite_(A, B) DWRITE ## _ ## A ## _ ## B
+
+#ifdef PA0
+#define DWRITE_A0_1 PORTA |= 0x01
+#define DWRITE_A0_0 PORTA &= 0xFE
+#else
+#define DWRITE_A0_1 # Pin A0 not supported on this MCU!
+#define DWRITE_A0_0 DWRITE_A0_1
+#endif
+#ifdef PA1
+#define DWRITE_A1_1 PORTA |= 0x02
+#define DWRITE_A1_0 PORTA &= 0xFD
+#else
+#define DWRITE_A1_1 # Pin A1 not supported on this MCU!
+#define DWRITE_A1_0 DWRITE_A1_1
+#endif
+#ifdef PA2
+#define DWRITE_A2_1 PORTA |= 0x04
+#define DWRITE_A2_0 PORTA &= 0xFB
+#else
+#define DWRITE_A2_1 # Pin A2 not supported on this MCU!
+#define DWRITE_A2_0 DWRITE_A2_1
+#endif
+#ifdef PA3
+#define DWRITE_A3_1 PORTA |= 0x08
+#define DWRITE_A3_0 PORTA &= 0xF7
+#else
+#define DWRITE_A3_1 # Pin A3 not supported on this MCU!
+#define DWRITE_A3_0 DWRITE_A3_1
+#endif
+#ifdef PA4
+#define DWRITE_A4_1 PORTA |= 0x10
+#define DWRITE_A4_0 PORTA &= 0xEF
+#else
+#define DWRITE_A4_1 # Pin A4 not supported on this MCU!
+#define DWRITE_A4_0 DWRITE_A4_1
+#endif
+#ifdef PA5
+#define DWRITE_A5_1 PORTA |= 0x20
+#define DWRITE_A5_0 PORTA &= 0xDF
+#else
+#define DWRITE_A5_1 # Pin A5 not supported on this MCU!
+#define DWRITE_A5_0 DWRITE_A5_1
+#endif
+#ifdef PA6
+#define DWRITE_A6_1 PORTA |= 0x40
+#define DWRITE_A6_0 PORTA &= 0xBF
+#else
+#define DWRITE_A6_1 # Pin A6 not supported on this MCU!
+#define DWRITE_A6_0 DWRITE_A6_1
+#endif
+#ifdef PA7
+#define DWRITE_A7_1 PORTA |= 0x80
+#define DWRITE_A7_0 PORTA &= 0x7F
+#else
+#define DWRITE_A7_1 # Pin A7 not supported on this MCU!
+#define DWRITE_A7_0 DWRITE_A7_1
+#endif
+
+
+#ifdef PB0
+#define DWRITE_B0_1 PORTB |= 0x01
+#define DWRITE_B0_0 PORTB &= 0xFE
+#else
+#define DWRITE_B0_1 # Pin B0 not supported on this MCU!
+#define DWRITE_B0_0 DWRITE_B0_1
+#endif
+#ifdef PB1
+#define DWRITE_B1_1 PORTB |= 0x02
+#define DWRITE_B1_0 PORTB &= 0xFD
+#else
+#define DWRITE_B1_1 # Pin B1 not supported on this MCU!
+#define DWRITE_B1_0 DWRITE_B1_1
+#endif
+#ifdef PB2
+#define DWRITE_B2_1 PORTB |= 0x04
+#define DWRITE_B2_0 PORTB &= 0xFB
+#else
+#define DWRITE_B2_1 # Pin B2 not supported on this MCU!
+#define DWRITE_B2_0 DWRITE_B2_1
+#endif
+#ifdef PB3
+#define DWRITE_B3_1 PORTB |= 0x08
+#define DWRITE_B3_0 PORTB &= 0xF7
+#else
+#define DWRITE_B3_1 # Pin B3 not supported on this MCU!
+#define DWRITE_B3_0 DWRITE_B3_1
+#endif
+#ifdef PB4
+#define DWRITE_B4_1 PORTB |= 0x10
+#define DWRITE_B4_0 PORTB &= 0xEF
+#else
+#define DWRITE_B4_1 # Pin B4 not supported on this MCU!
+#define DWRITE_B4_0 DWRITE_B4_1
+#endif
+#ifdef PB5
+#define DWRITE_B5_1 PORTB |= 0x20
+#define DWRITE_B5_0 PORTB &= 0xDF
+#else
+#define DWRITE_B5_1 # Pin B5 not supported on this MCU!
+#define DWRITE_B5_0 DWRITE_B5_1
+#endif
+#ifdef PB6
+#define DWRITE_B6_1 PORTB |= 0x40
+#define DWRITE_B6_0 PORTB &= 0xBF
+#else
+#define DWRITE_B6_1 # Pin B6 not supported on this MCU!
+#define DWRITE_B6_0 DWRITE_B6_1
+#endif
+#ifdef PB7
+#define DWRITE_B7_1 PORTB |= 0x80
+#define DWRITE_B7_0 PORTB &= 0x7F
+#else
+#define DWRITE_B7_1 # Pin B7 not supported on this MCU!
+#define DWRITE_B7_0 DWRITE_B7_1
+#endif
+
+
+#ifdef PC0
+#define DWRITE_C0_1 PORTC |= 0x01
+#define DWRITE_C0_0 PORTC &= 0xFE
+#else
+#define DWRITE_C0_1 # Pin C0 not supported on this MCU!
+#define DWRITE_C0_0 DWRITE_C0_1
+#endif
+#ifdef PC1
+#define DWRITE_C1_1 PORTC |= 0x02
+#define DWRITE_C1_0 PORTC &= 0xFD
+#else
+#define DWRITE_C1_1 # Pin C1 not supported on this MCU!
+#define DWRITE_C1_0 DWRITE_C1_1
+#endif
+#ifdef PC2
+#define DWRITE_C2_1 PORTC |= 0x04
+#define DWRITE_C2_0 PORTC &= 0xFB
+#else
+#define DWRITE_C2_1 # Pin C2 not supported on this MCU!
+#define DWRITE_C2_0 DWRITE_C2_1
+#endif
+#ifdef PC3
+#define DWRITE_C3_1 PORTC |= 0x08
+#define DWRITE_C3_0 PORTC &= 0xF7
+#else
+#define DWRITE_C3_1 # Pin C3 not supported on this MCU!
+#define DWRITE_C3_0 DWRITE_C3_1
+#endif
+#ifdef PC4
+#define DWRITE_C4_1 PORTC |= 0x10
+#define DWRITE_C4_0 PORTC &= 0xEF
+#else
+#define DWRITE_C4_1 # Pin C4 not supported on this MCU!
+#define DWRITE_C4_0 DWRITE_C4_1
+#endif
+#ifdef PC5
+#define DWRITE_C5_1 PORTC |= 0x20
+#define DWRITE_C5_0 PORTC &= 0xDF
+#else
+#define DWRITE_C5_1 # Pin C5 not supported on this MCU!
+#define DWRITE_C5_0 DWRITE_C5_1
+#endif
+#ifdef PC6
+#define DWRITE_C6_1 PORTC |= 0x40
+#define DWRITE_C6_0 PORTC &= 0xBF
+#else
+#define DWRITE_C6_1 # Pin C6 not supported on this MCU!
+#define DWRITE_C6_0 DWRITE_C6_1
+#endif
+#ifdef PC7
+#define DWRITE_C7_1 PORTC |= 0x80
+#define DWRITE_C7_0 PORTC &= 0x7F
+#else
+#define DWRITE_C7_1 # Pin C7 not supported on this MCU!
+#define DWRITE_C7_0 DWRITE_C7_1
+#endif
+
+
+#ifdef PD0
+#define DWRITE_D0_1 PORTD |= 0x01
+#define DWRITE_D0_0 PORTD &= 0xFE
+#else
+#define DWRITE_D0_1 # Pin D0 not supported on this MCU!
+#define DWRITE_D0_0 DWRITE_D0_1
+#endif
+#ifdef PD1
+#define DWRITE_D1_1 PORTD |= 0x02
+#define DWRITE_D1_0 PORTD &= 0xFD
+#else
+#define DWRITE_D1_1 # Pin D1 not supported on this MCU!
+#define DWRITE_D1_0 DWRITE_D1_1
+#endif
+#ifdef PD2
+#define DWRITE_D2_1 PORTD |= 0x04
+#define DWRITE_D2_0 PORTD &= 0xFB
+#else
+#define DWRITE_D2_1 # Pin D2 not supported on this MCU!
+#define DWRITE_D2_0 DWRITE_D2_1
+#endif
+#ifdef PD3
+#define DWRITE_D3_1 PORTD |= 0x08
+#define DWRITE_D3_0 PORTD &= 0xF7
+#else
+#define DWRITE_D3_1 # Pin D3 not supported on this MCU!
+#define DWRITE_D3_0 DWRITE_D3_1
+#endif
+#ifdef PD4
+#define DWRITE_D4_1 PORTD |= 0x10
+#define DWRITE_D4_0 PORTD &= 0xEF
+#else
+#define DWRITE_D4_1 # Pin D4 not supported on this MCU!
+#define DWRITE_D4_0 DWRITE_D4_1
+#endif
+#ifdef PD5
+#define DWRITE_D5_1 PORTD |= 0x20
+#define DWRITE_D5_0 PORTD &= 0xDF
+#else
+#define DWRITE_D5_1 # Pin D5 not supported on this MCU!
+#define DWRITE_D5_0 DWRITE_D5_1
+#endif
+#ifdef PD6
+#define DWRITE_D6_1 PORTD |= 0x40
+#define DWRITE_D6_0 PORTD &= 0xBF
+#else
+#define DWRITE_D6_1 # Pin D6 not supported on this MCU!
+#define DWRITE_D6_0 DWRITE_D6_1
+#endif
+#ifdef PD7
+#define DWRITE_D7_1 PORTD |= 0x80
+#define DWRITE_D7_0 PORTD &= 0x7F
+#else
+#define DWRITE_D7_1 # Pin D7 not supported on this MCU!
+#define DWRITE_D7_0 DWRITE_D7_1
+#endif
+
+
+#endif // PIO_DWRITE_H

pio/i2c/impl0.h

@@ -0,0 +1,78 @@
+/***
+ * impl0.h
+ * This file is part of the PIO library.
+ * For license information see "pio.h" in the super parent directory.
+ */
+
+#if !defined(PIOLIB) || PIOLIB < 100
+#error This file should be included directly. Use "pio.h" instead.
+#endif
+
+#ifndef F_CPU
+#error F_CPU not defined!
+#endif
+
+#ifndef F_I2C
+#ifndef PIO_DISABLE_I2C
+#warning F_I2C not defined, I2C disabled.
+#endif
+#else
+
+#include <stdlib.h>
+
+// AVR TWI master transmitter status codes
+#define TWS_START          0x08
+#define TWS_REPEATED_START 0x10
+#define TWS_ADDR_ACK       0x18
+#define TWS_ADDR_NOT_ACK   0x20
+#define TWS_DATA_ACK       0x28
+#define TWS_DATA_NOT_ACK   0x30
+#define TWS_ARB_LOST       0x38
+
+// functions
+void i2cInit(void);
+void i2cBeginTransmission(uint8_t);
+void i2cSend(uint8_t);
+void i2cEndTransmission(void);
+
+// error function pointer
+void (*i2cError)(void) = NULL;
+
+void i2cInit() {
+    // i2c clock speed, see SCL frequency formula in datasheet
+    uint16_t sp = F_CPU / F_I2C - 16;
+    uint16_t bp = sp;
+    while(sp > 510) {
+        TWSR++;
+        sp /= 4;
+    }
+    TWBR = bp / (1<<(2*(TWSR & 0x03)+1));
+}
+
+void i2cBeginTransmission(uint8_t addr) {
+    TWCR = _BV(TWEN) | _BV(TWINT) | _BV(TWSTA);
+    while (!(TWCR & _BV(TWINT)));
+    if((TWSR & 0xF8) != TWS_START)
+        i2cError();
+
+    TWDR = (addr & 0xFE) << 1;
+    TWCR = _BV(TWEN) | _BV(TWINT);
+    while (!(TWCR & _BV(TWINT)));
+    if((TWSR & 0xF8) != TWS_ADDR_ACK)
+        i2cError();
+}
+
+void i2cSend(uint8_t b) {
+    TWDR = b;
+    TWCR = _BV(TWEN) | _BV(TWINT);
+    while (!(TWCR & _BV(TWINT)));
+    if((TWSR & 0xF8) != TWS_DATA_ACK)
+        i2cError();
+}
+
+void i2cEndTransmission() {
+    TWCR = _BV(TWEN) | _BV(TWINT) | _BV(TWSTO);
+    while (TWCR & _BV(TWSTO));
+}
+
+#endif

pio/mcus.h

@@ -0,0 +1,22 @@
+/***
+ * mcus.h
+ * This file is part of the PIO library.
+ * For license information see "pio.h" in the parent directory.
+ */
+
+#if !defined(PIOLIB) || PIOLIB < 100
+#error This file should be included directly. Use "pio.h" instead.
+#endif
+
+#ifndef PIO_MCUS_H
+#define PIO_MCUS_H
+
+#include "mcus/atmega328p.h"
+#include "mcus/atmega16.h"
+#include "mcus/atmega1284.h"
+
+#ifndef MCU
+#error No compatible MCU header file found.
+#endif
+
+#endif // PIO_MCUS_H

pio/mcus/atmega1284.h

@@ -0,0 +1,17 @@
+/***
+ * atmega1284.h
+ * This file is part of the PIO library.
+ * For license information see "pio.h" in the super parent directory.
+ */
+
+#if !defined(PIOLIB) || PIOLIB < 100
+#error This file should not be included directly. Use "pio.h" instead.
+#endif
+
+#ifdef __AVR_ATmega1284__
+
+#define MCU ATmega1284
+
+#include "../i2c/impl0.h"
+
+#endif

pio/mcus/atmega16.h

@@ -0,0 +1,17 @@
+/***
+ * atmega16.h
+ * This file is part of the PIO library.
+ * For license information see "pio.h" in the super parent directory.
+ */
+
+#if !defined(PIOLIB) || PIOLIB < 100
+#error This file should not be included directly. Use "pio.h" instead.
+#endif
+
+#ifdef __AVR_ATmega16__
+
+#define MCU ATmega16
+
+#include "../i2c/impl0.h"
+
+#endif

pio/mcus/atmega328p.h

@@ -0,0 +1,14 @@
+/***
+ * atmega328p.h
+ * This file is part of the PIO library.
+ * For license information see "pio.h" in the super parent directory.
+ */
+
+#if !defined(PIOLIB) || PIOLIB < 100
+#error This file should not be included directly. Use "pio.h" instead.
+#endif
+
+
+#ifdef __AVR_ATmega328P__
+#error Not implemented!
+#endif