avr/avr_demo
avr/avr_demo
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Sync Triple-A libraries.

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This commit is contained in:
Mika Tuupola 2011-12-17 19:08:52 +02:00
parent fdf5f06cd8
commit 391a0e6cc2
10 changed files with 374 additions and 760 deletions
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29
tpic6b595_spi/digital.h
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/*
* digital.h
*
* Lightweight macro implementation of Arduino style pin numbering
* for AVR microprocessors. Because only thing I want to use from
* Arduino libraries is the pin numbering scheme.
*
* This file taken 99% from the excellent ArduinoLite project by
* Shikai Chen <csk@live.com>. Some minor changes to suite my personal
* coding taste.
*
* http://code.google.com/p/arduino-lite/
* http://www.csksoft.net/
*
* Copyright (c) 2010-2011 Shikai Chen
*
* Licensed under the LGPL 2.1 license:
* http://www.opensource.org/licenses/lgpl-2.1.php
*/
#ifndef DIGITAL_H
#define DIGITAL_H
#include "pins.h"
#define digital_read(pin) EXPAND_WRAPPER(_D_READ, ARDUINOPIN_TO_PORTID(pin), ARDUINOPIN_TO_PORTMSK(pin) )
#define digital_read_raw(pin) EXPAND_WRAPPER(_D_READ_RAW, ARDUINOPIN_TO_PORTID(pin), ARDUINOPIN_TO_PORTMSK(pin) )
#define digital_write(pin, val) D_WRITE_##val(pin)
#endif /* DIGITAL_H */

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tpic6b595_spi/pins.h
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/*
* pins.h
*
* Lightweight macro implementation of Arduino style pin numbering
* for AVR microprocessors. Because only thing I want to use from
* Arduino libraries is the pin numbering scheme.
*
* This file taken 99% from the excellent ArduinoLite project by
* Shikai Chen <csk@live.com>. Some minor changes to suite my personal
* coding taste.
*
* http://code.google.com/p/arduino-lite/
* http://www.csksoft.net/
*
* Copyright (c) 2010-2011 Shikai Chen
*
* Licensed under the LGPL 2.1 license:
* http://www.opensource.org/licenses/lgpl-2.1.php
*/
#ifndef PINS_H
#define PINS_H
#include <avr/sfr_defs.h>
#include <avr/io.h>
#define HIGH 0x1
#define LOW 0x0
#define INPUT 0x0
#define OUTPUT 0x1
#define ENABLE 0x1
#define DISABLE 0x0
#define ARDUINOPIN_TO_TIMERID(x) TIMER_AT_PIN_##x
#define ARDUINOPIN_TO_TCCRID(x) TCCR_AT_PIN_##x
#define ARDUINOPIN_TO_PORTID(x) PORT_AT_PIN_##x
#define ARDUINOPIN_TO_PORTMSK(x) PORTMSK_AT_PIN_##x
#define PORTID_TO_DIR_REG(x) DIR_REG_AT_##x
#define PORTID_TO_OUTPUT_REG(x) OUTPUT_REG_AT_##x
#define PORTID_TO_INPUT_REG(x) INPUT_REG_AT_##x
#if defined(__AVR_ATmega1280__)
#define PORT_AT_PIN_0 PortE // PE 0 ** 0 ** USART0_RX
#define PORT_AT_PIN_1 PortE // PE 1 ** 1 ** USART0_TX
#define PORT_AT_PIN_2 PortE // PE 4 ** 2 ** PWM2
#define PORT_AT_PIN_3 PortE // PE 5 ** 3 ** PWM3
#define PORT_AT_PIN_4 PortG // PG 5 ** 4 ** PWM4
#define PORT_AT_PIN_5 PortE // PE 3 ** 5 ** PWM5
#define PORT_AT_PIN_6 PortH // PH 3 ** 6 ** PWM6
#define PORT_AT_PIN_7 PortH // PH 4 ** 7 ** PWM7
#define PORT_AT_PIN_8 PortH // PH 5 ** 8 ** PWM8
#define PORT_AT_PIN_9 PortH // PH 6 ** 9 ** PWM9
#define PORT_AT_PIN_10 PortB // PB 4 ** 10 ** PWM10
#define PORT_AT_PIN_11 PortB // PB 5 ** 11 ** PWM11
#define PORT_AT_PIN_12 PortB // PB 6 ** 12 ** PWM12
#define PORT_AT_PIN_13 PortB // PB 7 ** 13 ** PWM13
#define PORT_AT_PIN_14 PortJ // PJ 1 ** 14 ** USART3_TX
#define PORT_AT_PIN_15 PortJ // PJ 0 ** 15 ** USART3_RX
#define PORT_AT_PIN_16 PortH // PH 1 ** 16 ** USART2_TX
#define PORT_AT_PIN_17 PortH // PH 0 ** 17 ** USART2_RX
#define PORT_AT_PIN_18 PortD // PD 3 ** 18 ** USART1_TX
#define PORT_AT_PIN_19 PortD // PD 2 ** 19 ** USART1_RX
#define PORT_AT_PIN_20 PortD // PD 1 ** 20 ** I2C_SDA
#define PORT_AT_PIN_21 PortD // PD 0 ** 21 ** I2C_SCL
#define PORT_AT_PIN_22 PortA // PA 0 ** 22 ** D22
#define PORT_AT_PIN_23 PortA // PA 1 ** 23 ** D23
#define PORT_AT_PIN_24 PortA // PA 2 ** 24 ** D24
#define PORT_AT_PIN_25 PortA // PA 3 ** 25 ** D25
#define PORT_AT_PIN_26 PortA // PA 4 ** 26 ** D26
#define PORT_AT_PIN_27 PortA // PA 5 ** 27 ** D27
#define PORT_AT_PIN_28 PortA // PA 6 ** 28 ** D28
#define PORT_AT_PIN_29 PortA // PA 7 ** 29 ** D29
#define PORT_AT_PIN_30 PortC // PC 7 ** 30 ** D30
#define PORT_AT_PIN_31 PortC // PC 6 ** 31 ** D31
#define PORT_AT_PIN_32 PortC // PC 5 ** 32 ** D32
#define PORT_AT_PIN_33 PortC // PC 4 ** 33 ** D33
#define PORT_AT_PIN_34 PortC // PC 3 ** 34 ** D34
#define PORT_AT_PIN_35 PortC // PC 2 ** 35 ** D35
#define PORT_AT_PIN_36 PortC // PC 1 ** 36 ** D36
#define PORT_AT_PIN_37 PortC // PC 0 ** 37 ** D37
#define PORT_AT_PIN_38 PortD // PD 7 ** 38 ** D38
#define PORT_AT_PIN_39 PortG // PG 2 ** 39 ** D39
#define PORT_AT_PIN_40 PortG // PG 1 ** 40 ** D40
#define PORT_AT_PIN_41 PortG // PG 0 ** 41 ** D41
#define PORT_AT_PIN_42 PortL // PL 7 ** 42 ** D42
#define PORT_AT_PIN_43 PortL // PL 6 ** 43 ** D43
#define PORT_AT_PIN_44 PortL // PL 5 ** 44 ** D44
#define PORT_AT_PIN_45 PortL // PL 4 ** 45 ** D45
#define PORT_AT_PIN_46 PortL // PL 3 ** 46 ** D46
#define PORT_AT_PIN_47 PortL // PL 2 ** 47 ** D47
#define PORT_AT_PIN_48 PortL // PL 1 ** 48 ** D48
#define PORT_AT_PIN_49 PortL // PL 0 ** 49 ** D49
#define PORT_AT_PIN_50 PortB // PB 3 ** 50 ** SPI_MISO
#define PORT_AT_PIN_51 PortB // PB 2 ** 51 ** SPI_MOSI
#define PORT_AT_PIN_52 PortB // PB 1 ** 52 ** SPI_SCK
#define PORT_AT_PIN_53 PortB // PB 0 ** 53 ** SPI_SS
#define PORT_AT_PIN_54 PortF // PF 0 ** 54 ** A0
#define PORT_AT_PIN_55 PortF // PF 1 ** 55 ** A1
#define PORT_AT_PIN_56 PortF // PF 2 ** 56 ** A2
#define PORT_AT_PIN_57 PortF // PF 3 ** 57 ** A3
#define PORT_AT_PIN_58 PortF // PF 4 ** 58 ** A4
#define PORT_AT_PIN_59 PortF // PF 5 ** 59 ** A5
#define PORT_AT_PIN_60 PortF // PF 6 ** 60 ** A6
#define PORT_AT_PIN_61 PortF // PF 7 ** 61 ** A7
#define PORT_AT_PIN_62 PortK // PK 0 ** 62 ** A8
#define PORT_AT_PIN_63 PortK // PK 1 ** 63 ** A9
#define PORT_AT_PIN_64 PortK // PK 2 ** 64 ** A10
#define PORT_AT_PIN_65 PortK // PK 3 ** 65 ** A11
#define PORT_AT_PIN_66 PortK // PK 4 ** 66 ** A12
#define PORT_AT_PIN_67 PortK // PK 5 ** 67 ** A13
#define PORT_AT_PIN_68 PortK // PK 6 ** 68 ** A14
#define PORT_AT_PIN_69 PortK // PK 7 ** 69 ** A15
#define PORTMSK_AT_PIN_0 _BV( 0 ) // PE 0 ** 0 ** USART0_RX
#define PORTMSK_AT_PIN_1 _BV( 1 ) // PE 1 ** 1 ** USART0_TX
#define PORTMSK_AT_PIN_2 _BV( 4 ) // PE 4 ** 2 ** PWM2
#define PORTMSK_AT_PIN_3 _BV( 5 ) // PE 5 ** 3 ** PWM3
#define PORTMSK_AT_PIN_4 _BV( 5 ) // PG 5 ** 4 ** PWM4
#define PORTMSK_AT_PIN_5 _BV( 3 ) // PE 3 ** 5 ** PWM5
#define PORTMSK_AT_PIN_6 _BV( 3 ) // PH 3 ** 6 ** PWM6
#define PORTMSK_AT_PIN_7 _BV( 4 ) // PH 4 ** 7 ** PWM7
#define PORTMSK_AT_PIN_8 _BV( 5 ) // PH 5 ** 8 ** PWM8
#define PORTMSK_AT_PIN_9 _BV( 6 ) // PH 6 ** 9 ** PWM9
#define PORTMSK_AT_PIN_10 _BV( 4 ) // PB 4 ** 10 ** PWM10
#define PORTMSK_AT_PIN_11 _BV( 5 ) // PB 5 ** 11 ** PWM11
#define PORTMSK_AT_PIN_12 _BV( 6 ) // PB 6 ** 12 ** PWM12
#define PORTMSK_AT_PIN_13 _BV( 7 ) // PB 7 ** 13 ** PWM13
#define PORTMSK_AT_PIN_14 _BV( 1 ) // PJ 1 ** 14 ** USART3_TX
#define PORTMSK_AT_PIN_15 _BV( 0 ) // PJ 0 ** 15 ** USART3_RX
#define PORTMSK_AT_PIN_16 _BV( 1 ) // PH 1 ** 16 ** USART2_TX
#define PORTMSK_AT_PIN_17 _BV( 0 ) // PH 0 ** 17 ** USART2_RX
#define PORTMSK_AT_PIN_18 _BV( 3 ) // PD 3 ** 18 ** USART1_TX
#define PORTMSK_AT_PIN_19 _BV( 2 ) // PD 2 ** 19 ** USART1_RX
#define PORTMSK_AT_PIN_20 _BV( 1 ) // PD 1 ** 20 ** I2C_SDA
#define PORTMSK_AT_PIN_21 _BV( 0 ) // PD 0 ** 21 ** I2C_SCL
#define PORTMSK_AT_PIN_22 _BV( 0 ) // PA 0 ** 22 ** D22
#define PORTMSK_AT_PIN_23 _BV( 1 ) // PA 1 ** 23 ** D23
#define PORTMSK_AT_PIN_24 _BV( 2 ) // PA 2 ** 24 ** D24
#define PORTMSK_AT_PIN_25 _BV( 3 ) // PA 3 ** 25 ** D25
#define PORTMSK_AT_PIN_26 _BV( 4 ) // PA 4 ** 26 ** D26
#define PORTMSK_AT_PIN_27 _BV( 5 ) // PA 5 ** 27 ** D27
#define PORTMSK_AT_PIN_28 _BV( 6 ) // PA 6 ** 28 ** D28
#define PORTMSK_AT_PIN_29 _BV( 7 ) // PA 7 ** 29 ** D29
#define PORTMSK_AT_PIN_30 _BV( 7 ) // PC 7 ** 30 ** D30
#define PORTMSK_AT_PIN_31 _BV( 6 ) // PC 6 ** 31 ** D31
#define PORTMSK_AT_PIN_32 _BV( 5 ) // PC 5 ** 32 ** D32
#define PORTMSK_AT_PIN_33 _BV( 4 ) // PC 4 ** 33 ** D33
#define PORTMSK_AT_PIN_34 _BV( 3 ) // PC 3 ** 34 ** D34
#define PORTMSK_AT_PIN_35 _BV( 2 ) // PC 2 ** 35 ** D35
#define PORTMSK_AT_PIN_36 _BV( 1 ) // PC 1 ** 36 ** D36
#define PORTMSK_AT_PIN_37 _BV( 0 ) // PC 0 ** 37 ** D37
#define PORTMSK_AT_PIN_38 _BV( 7 ) // PD 7 ** 38 ** D38
#define PORTMSK_AT_PIN_39 _BV( 2 ) // PG 2 ** 39 ** D39
#define PORTMSK_AT_PIN_40 _BV( 1 ) // PG 1 ** 40 ** D40
#define PORTMSK_AT_PIN_41 _BV( 0 ) // PG 0 ** 41 ** D41
#define PORTMSK_AT_PIN_42 _BV( 7 ) // PL 7 ** 42 ** D42
#define PORTMSK_AT_PIN_43 _BV( 6 ) // PL 6 ** 43 ** D43
#define PORTMSK_AT_PIN_44 _BV( 5 ) // PL 5 ** 44 ** D44
#define PORTMSK_AT_PIN_45 _BV( 4 ) // PL 4 ** 45 ** D45
#define PORTMSK_AT_PIN_46 _BV( 3 ) // PL 3 ** 46 ** D46
#define PORTMSK_AT_PIN_47 _BV( 2 ) // PL 2 ** 47 ** D47
#define PORTMSK_AT_PIN_48 _BV( 1 ) // PL 1 ** 48 ** D48
#define PORTMSK_AT_PIN_49 _BV( 0 ) // PL 0 ** 49 ** D49
#define PORTMSK_AT_PIN_50 _BV( 3 ) // PB 3 ** 50 ** SPI_MISO
#define PORTMSK_AT_PIN_51 _BV( 2 ) // PB 2 ** 51 ** SPI_MOSI
#define PORTMSK_AT_PIN_52 _BV( 1 ) // PB 1 ** 52 ** SPI_SCK
#define PORTMSK_AT_PIN_53 _BV( 0 ) // PB 0 ** 53 ** SPI_SS
#define PORTMSK_AT_PIN_54 _BV( 0 ) // PF 0 ** 54 ** A0
#define PORTMSK_AT_PIN_55 _BV( 1 ) // PF 1 ** 55 ** A1
#define PORTMSK_AT_PIN_56 _BV( 2 ) // PF 2 ** 56 ** A2
#define PORTMSK_AT_PIN_57 _BV( 3 ) // PF 3 ** 57 ** A3
#define PORTMSK_AT_PIN_58 _BV( 4 ) // PF 4 ** 58 ** A4
#define PORTMSK_AT_PIN_59 _BV( 5 ) // PF 5 ** 59 ** A5
#define PORTMSK_AT_PIN_60 _BV( 6 ) // PF 6 ** 60 ** A6
#define PORTMSK_AT_PIN_61 _BV( 7 ) // PF 7 ** 61 ** A7
#define PORTMSK_AT_PIN_62 _BV( 0 ) // PK 0 ** 62 ** A8
#define PORTMSK_AT_PIN_63 _BV( 1 ) // PK 1 ** 63 ** A9
#define PORTMSK_AT_PIN_64 _BV( 2 ) // PK 2 ** 64 ** A10
#define PORTMSK_AT_PIN_65 _BV( 3 ) // PK 3 ** 65 ** A11
#define PORTMSK_AT_PIN_66 _BV( 4 ) // PK 4 ** 66 ** A12
#define PORTMSK_AT_PIN_67 _BV( 5 ) // PK 5 ** 67 ** A13
#define PORTMSK_AT_PIN_68 _BV( 6 ) // PK 6 ** 68 ** A14
#define PORTMSK_AT_PIN_69 _BV( 7 ) // PK 7 ** 69 ** A15
////////////Arduino pin to Timer Regs mapping
#define TIMER_AT_PIN_2 3B
#define TCCR_AT_PIN_2 TCCR3A
#define TIMER_AT_PIN_3 3C
#define TCCR_AT_PIN_3 TCCR3A
#define TIMER_AT_PIN_4 0B
#define TCCR_AT_PIN_4 TCCR0A
#define TIMER_AT_PIN_5 3A
#define TCCR_AT_PIN_5 TCCR3A
#define TIMER_AT_PIN_6 4A
#define TCCR_AT_PIN_6 TCCR4A
#define TIMER_AT_PIN_7 4B
#define TCCR_AT_PIN_7 TCCR4A
#define TIMER_AT_PIN_8 4C
#define TCCR_AT_PIN_8 TCCR4A
#define TIMER_AT_PIN_9 2B
#define TCCR_AT_PIN_9 TCCR2A
#define TIMER_AT_PIN_10 2A
#define TCCR_AT_PIN_10 TCCR2A
#define TIMER_AT_PIN_11 1A
#define TCCR_AT_PIN_11 TCCR1A
#define TIMER_AT_PIN_12 1B
#define TCCR_AT_PIN_12 TCCR1A
#define TIMER_AT_PIN_13 0A
#define TCCR_AT_PIN_13 TCCR0A
#define TIMER_AT_PIN_44 5C
#define TCCR_AT_PIN_44 TCCR5A
#define TIMER_AT_PIN_45 5B
#define TCCR_AT_PIN_45 TCCR5A
#define TIMER_AT_PIN_46 5A
#define TCCR_AT_PIN_46 TCCR5A
////////////PORT to DDRX mapping
#define DIR_REG_AT_PortA DDRA
#define DIR_REG_AT_PortB DDRB
#define DIR_REG_AT_PortC DDRC
#define DIR_REG_AT_PortD DDRD
#define DIR_REG_AT_PortE DDRE
#define DIR_REG_AT_PortF DDRF
#define DIR_REG_AT_PortG DDRG
#define DIR_REG_AT_PortH DDRH
#define DIR_REG_AT_PortJ DDRJ
#define DIR_REG_AT_PortK DDRK
#define DIR_REG_AT_PortL DDRL
////////////PORT to PORTX mapping
#define OUTPUT_REG_AT_PortA PORTA
#define OUTPUT_REG_AT_PortB PORTB
#define OUTPUT_REG_AT_PortC PORTC
#define OUTPUT_REG_AT_PortD PORTD
#define OUTPUT_REG_AT_PortE PORTE
#define OUTPUT_REG_AT_PortF PORTF
#define OUTPUT_REG_AT_PortG PORTG
#define OUTPUT_REG_AT_PortH PORTH
#define OUTPUT_REG_AT_PortJ PORTJ
#define OUTPUT_REG_AT_PortK PORTK
#define OUTPUT_REG_AT_PortL PORTL
////////////PORT to PINX(input regs) mapping
#define INPUT_REG_AT_PortA PINA
#define INPUT_REG_AT_PortB PINB
#define INPUT_REG_AT_PortC PINC
#define INPUT_REG_AT_PortD PIND
#define INPUT_REG_AT_PortE PINE
#define INPUT_REG_AT_PortF PINF
#define INPUT_REG_AT_PortG PING
#define INPUT_REG_AT_PortH PINH
#define INPUT_REG_AT_PortJ PINJ
#define INPUT_REG_AT_PortK PINK
#define INPUT_REG_AT_PortL PINL
#else /* not __AVR_ATmega1280__ */
#if defined(__AVR_ATtiny2313__)
//no PortC on tiny2313
//Pin[0-6] -> PortD[0-6]
#define PORT_AT_PIN_0 PortD /* 0 */
#define PORT_AT_PIN_1 PortD
#define PORT_AT_PIN_2 PortD
#define PORT_AT_PIN_3 PortD
#define PORT_AT_PIN_4 PortD
#define PORT_AT_PIN_5 PortD
#define PORT_AT_PIN_6 PortD
//Pin[7-14] -> PortB[0-7]
#define PORT_AT_PIN_7 PortB
#define PORT_AT_PIN_8 PortB /* 8 */
#define PORT_AT_PIN_9 PortB
#define PORT_AT_PIN_10 PortB
#define PORT_AT_PIN_11 PortB
#define PORT_AT_PIN_12 PortB
#define PORT_AT_PIN_13 PortB
#define PORT_AT_PIN_14 PortB
#elif defined(__AVR_ATtiny26__)
//Pin[0-6] -> PortD[0-6]
#define PORT_AT_PIN_0 PortB /* 0 */
#define PORT_AT_PIN_1 PortB
#define PORT_AT_PIN_2 PortB
#define PORT_AT_PIN_3 PortB
#define PORT_AT_PIN_4 PortB
#define PORT_AT_PIN_5 PortB
#define PORT_AT_PIN_6 PortB
//D[7-13] and A[0-9] share the same pins on Attiny26
#define PORT_AT_PIN_7 PortA /* 0 */
#define PORT_AT_PIN_8 PortA
#define PORT_AT_PIN_9 PortA
#define PORT_AT_PIN_10 PortA
#define PORT_AT_PIN_11 PortA
#define PORT_AT_PIN_12 PortA
#define PORT_AT_PIN_13 PortA
#else // Atmega8 / Atmegax8
#define PORT_AT_PIN_0 PortD /* 0 */
#define PORT_AT_PIN_1 PortD
#define PORT_AT_PIN_2 PortD
#define PORT_AT_PIN_3 PortD
#define PORT_AT_PIN_4 PortD
#define PORT_AT_PIN_5 PortD
#define PORT_AT_PIN_6 PortD
#define PORT_AT_PIN_7 PortD
#define PORT_AT_PIN_8 PortB /* 8 */
#define PORT_AT_PIN_9 PortB
#define PORT_AT_PIN_10 PortB
#define PORT_AT_PIN_11 PortB
#define PORT_AT_PIN_12 PortB
#define PORT_AT_PIN_13 PortB
#define PORT_AT_PIN_14 PortC /* 14 */
#define PORT_AT_PIN_15 PortC
#define PORT_AT_PIN_16 PortC
#define PORT_AT_PIN_17 PortC
#define PORT_AT_PIN_18 PortC
#define PORT_AT_PIN_19 PortC
#define PORT_AT_PIN_20 PortB
#define PORT_AT_PIN_21 PortB
#endif
#if defined(__AVR_ATtiny2313__)
#define PORTMSK_AT_PIN_0 _BV(0)
#define PORTMSK_AT_PIN_1 _BV(1)
#define PORTMSK_AT_PIN_2 _BV(2)
#define PORTMSK_AT_PIN_3 _BV(3)
#define PORTMSK_AT_PIN_4 _BV(4)
#define PORTMSK_AT_PIN_5 _BV(5)
#define PORTMSK_AT_PIN_6 _BV(6)
#define PORTMSK_AT_PIN_7 _BV(0)
#define PORTMSK_AT_PIN_8 _BV(1)
#define PORTMSK_AT_PIN_9 _BV(2)
#define PORTMSK_AT_PIN_10 _BV(3)
#define PORTMSK_AT_PIN_11 _BV(4)
#define PORTMSK_AT_PIN_12 _BV(5)
#define PORTMSK_AT_PIN_13 _BV(6)
#define PORTMSK_AT_PIN_14 _BV(7)
#elif defined(__AVR_ATtiny26__)
#define PORTMSK_AT_PIN_0 _BV(0)
#define PORTMSK_AT_PIN_1 _BV(1)
#define PORTMSK_AT_PIN_2 _BV(2)
#define PORTMSK_AT_PIN_3 _BV(3)
#define PORTMSK_AT_PIN_4 _BV(4)
#define PORTMSK_AT_PIN_5 _BV(5)
#define PORTMSK_AT_PIN_6 _BV(6)
#define PORTMSK_AT_PIN_7 _BV(0)
#define PORTMSK_AT_PIN_8 _BV(1)
#define PORTMSK_AT_PIN_9 _BV(2)
#define PORTMSK_AT_PIN_10 _BV(3)
#define PORTMSK_AT_PIN_11 _BV(4)
#define PORTMSK_AT_PIN_12 _BV(5)
#define PORTMSK_AT_PIN_13 _BV(6)
#else //Atmega8/ Atmegax8
#define PORTMSK_AT_PIN_0 _BV(0) /* 0 port D */
#define PORTMSK_AT_PIN_1 _BV(1)
#define PORTMSK_AT_PIN_2 _BV(2)
#define PORTMSK_AT_PIN_3 _BV(3)
#define PORTMSK_AT_PIN_4 _BV(4)
#define PORTMSK_AT_PIN_5 _BV(5)
#define PORTMSK_AT_PIN_6 _BV(6)
#define PORTMSK_AT_PIN_7 _BV(7)
#define PORTMSK_AT_PIN_8 _BV(0) /* 8 port B */
#define PORTMSK_AT_PIN_9 _BV(1)
#define PORTMSK_AT_PIN_10 _BV(2)
#define PORTMSK_AT_PIN_11 _BV(3)
#define PORTMSK_AT_PIN_12 _BV(4)
#define PORTMSK_AT_PIN_13 _BV(5)
#define PORTMSK_AT_PIN_14 _BV(0) /* 14 port C */
#define PORTMSK_AT_PIN_15 _BV(1)
#define PORTMSK_AT_PIN_16 _BV(2)
#define PORTMSK_AT_PIN_17 _BV(3)
#define PORTMSK_AT_PIN_18 _BV(4)
#define PORTMSK_AT_PIN_19 _BV(5)
#define PORTMSK_AT_PIN_20 _BV(6)
#define PORTMSK_AT_PIN_21 _BV(7)
#endif
////////////PORT to DDRX mapping
#define DIR_REG_AT_PortA DDRA
#define DIR_REG_AT_PortB DDRB
#if defined(__AVR_ATtiny2313__)
//no PortC on tiny2313
#else
#define DIR_REG_AT_PortC DDRC
#endif
#define DIR_REG_AT_PortD DDRD
////////////PORT to PORTX mapping
#define OUTPUT_REG_AT_PortA PORTA
#define OUTPUT_REG_AT_PortB PORTB
#if defined(__AVR_ATtiny2313__)
//no PortC on tiny2313
#else
#define OUTPUT_REG_AT_PortC PORTC
#endif
#define OUTPUT_REG_AT_PortD PORTD
////////////PORT to PINX(input regs) mapping
#define INPUT_REG_AT_PortA PINA
#define INPUT_REG_AT_PortB PINB
#if defined(__AVR_ATtiny2313__)
//no PortC on tiny2313
#else
#define INPUT_REG_AT_PortC PINC
#endif
#define INPUT_REG_AT_PortD PIND
#if defined(__AVR_ATtiny2313__)
#define TIMER_AT_PIN_5 0B
#define TCCR_AT_PIN_5 TCCR0A
#define TIMER_AT_PIN_9 0A
#define TCCR_AT_PIN_9 TCCR0A
#define TIMER_AT_PIN_10 1A
#define TCCR_AT_PIN_10 TCCR1A
#define TIMER_AT_PIN_11 1B
#define TCCR_AT_PIN_11 TCCR1A
#elif defined(__AVR_ATtiny26__)
/*
#define TIMER_AT_PIN_0 1A
#define TCCR_AT_PIN_0 TCCR1A
*/
#define TIMER_AT_PIN_1 1A
#define TCCR_AT_PIN_1 TCCR1A
/*
#define TIMER_AT_PIN_2 1B
#define TCCR_AT_PIN_2 TCCR1A
*/
#define TIMER_AT_PIN_3 1B
#define TCCR_AT_PIN_3 TCCR1A
#else
#if !defined(__AVR_ATmega8__) //for Atmega48/88/168/328
#define TIMER_AT_PIN_3 2B
#define TCCR_AT_PIN_3 TCCR2A
#define TIMER_AT_PIN_5 0B
#define TCCR_AT_PIN_5 TCCR0A
#define TIMER_AT_PIN_6 0A
#define TCCR_AT_PIN_6 TCCR0A
#endif
#define TIMER_AT_PIN_9 1A
#define TCCR_AT_PIN_9 TCCR1A
#define TIMER_AT_PIN_10 1B
#define TCCR_AT_PIN_10 TCCR1A
#if defined(__AVR_ATmega8__)
#define TIMER_AT_PIN_11 2
#define TCCR_AT_PIN_11 TCCR2
#else //for Atmega48/88/168/328
#define TIMER_AT_PIN_11 2A
#define TCCR_AT_PIN_11 TCCR2A
#endif
#endif
#endif
#define MERGE_TO_FUNC(prefix, id) prefix##_##id
#define EXPAND_WRAPPER( NEXTLEVEL, ...) NEXTLEVEL( __VA_ARGS__ )
#define _PWM_SET(id, val) \
do{ \
OCR##id = val; \
} \
while(0)
#define _PWM_ENABLE(TCCR, id) sbi(TCCR, COM##id##1)
#define _PWM_DISABLE(TCCR, id) cbi(TCCR, COM##id##1)
#define _SET_OUTPUT(port_id, msk) PORTID_TO_DIR_REG(port_id) |= (msk)
#define _SET_INTPUT(port_id, msk) PORTID_TO_DIR_REG(port_id) &= ~(msk)
#define _D_WRITE_HIGH(port_id, msk) PORTID_TO_OUTPUT_REG(port_id) |= (msk)
#define _D_WRITE_LOW(port_id, msk) PORTID_TO_OUTPUT_REG(port_id) &= ~(msk)
#define _D_READ_RAW(port_id, msk) ((PORTID_TO_INPUT_REG(port_id)) & (msk))
#define _D_READ(port_id, msk) (((PORTID_TO_INPUT_REG(port_id)) & (msk)) != 0 ? 1 : 0)
#define _D_TOGGLE(port_id, msk) PORTID_TO_OUTPUT_REG(port_id) ^= (msk)
/*
*
* NOTICE: for pins at timer0A/0B,
* if the duty cycle to be set equals to zero, using the following code:
* DIGITAL_WRITE(pin, LOW);
* -- or --
* digitalWrite(pin, LOW);
* The caller should make sure the current pin has been set to OUTPUT mode first
*/
#define SET_1(pin) SET_OUTPUT(pin)
#define SET_0(pin) SET_INPUT(pin)
#define SET_0x1(pin) SET_OUTPUT(pin)
#define SET_0x0(pin) SET_INPUT(pin)
#define D_WRITE_HIGH(pin) EXPAND_WRAPPER(_D_WRITE_HIGH, ARDUINOPIN_TO_PORTID(pin), ARDUINOPIN_TO_PORTMSK(pin) )
#define D_WRITE_LOW(pin) EXPAND_WRAPPER(_D_WRITE_LOW, ARDUINOPIN_TO_PORTID(pin), ARDUINOPIN_TO_PORTMSK(pin) )
#define D_WRITE_1(pin) D_WRITE_HIGH(pin)
#define D_WRITE_0(pin) D_WRITE_LOW(pin)
#define D_WRITE_0x1(pin) D_WRITE_HIGH(pin)
#define D_WRITE_0x0(pin) D_WRITE_LOW(pin)
#define D_WRITE_ENABLE(pin) D_WRITE_HIGH(pin)
#define D_WRITE_DISABLE(pin) D_WRITE_LOW(pin)
#define SET_OUTPUT(pin) EXPAND_WRAPPER(_SET_OUTPUT, ARDUINOPIN_TO_PORTID(pin), ARDUINOPIN_TO_PORTMSK(pin) )
#define SET_INPUT(pin) EXPAND_WRAPPER(_SET_INTPUT, ARDUINOPIN_TO_PORTID(pin), ARDUINOPIN_TO_PORTMSK(pin) )
#define pin_mode(pin, mode) SET_##mode(pin)
#define pin_pullup(pin, val) D_WRITE_##val(pin)
#define pin_toggle(pin) EXPAND_WRAPPER(_D_TOGGLE, ARDUINOPIN_TO_PORTID(pin), ARDUINOPIN_TO_PORTMSK(pin) )
#endif /* PINS_H */

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/*
* arduino.h
*
* Lightweight macro implementation of Arduino style pin numbering
* for accessing Atmel digital and analog pins.
*
* pin_mode(1, OUTPUT);
* digital_write(1, HIGH);
* pin_mode(2, INPUT);
* digital_read(2);
*
* This file is based on Arduino project.
* https://github.com/arduino/Arduino/
*
* Copyright (c) 2007-2011 David A. Mellis, Mika tuupola
*
* Licensed under the LGPL 2.1 license:
* http://www.opensource.org/licenses/lgpl-2.1.php
*/
#ifndef ARDUINO_H
#define ARDUINO_H
/* atmega328 */
#define PORT_AT_PIN_0 PortD
#define PORT_AT_PIN_1 PortD
#define PORT_AT_PIN_2 PortD
#define PORT_AT_PIN_3 PortD
#define PORT_AT_PIN_4 PortD
#define PORT_AT_PIN_5 PortD
#define PORT_AT_PIN_6 PortD
#define PORT_AT_PIN_7 PortD
#define PORT_AT_PIN_8 PortB
#define PORT_AT_PIN_9 PortB
#define PORT_AT_PIN_10 PortB
#define PORT_AT_PIN_11 PortB
#define PORT_AT_PIN_12 PortB
#define PORT_AT_PIN_13 PortB
#define PORT_AT_PIN_14 PortC
#define PORT_AT_PIN_15 PortC
#define PORT_AT_PIN_16 PortC
#define PORT_AT_PIN_17 PortC
#define PORT_AT_PIN_18 PortC
#define PORT_AT_PIN_19 PortC
#define PORT_AT_PIN_20 PortB
#define PORT_AT_PIN_21 PortB
#define MASK_AT_PIN_0 _BV(0)
#define MASK_AT_PIN_1 _BV(1)
#define MASK_AT_PIN_2 _BV(2)
#define MASK_AT_PIN_3 _BV(3)
#define MASK_AT_PIN_4 _BV(4)
#define MASK_AT_PIN_5 _BV(5)
#define MASK_AT_PIN_6 _BV(6)
#define MASK_AT_PIN_7 _BV(7)
#define MASK_AT_PIN_8 _BV(0)
#define MASK_AT_PIN_9 _BV(1)
#define MASK_AT_PIN_10 _BV(2)
#define MASK_AT_PIN_11 _BV(3)
#define MASK_AT_PIN_12 _BV(4)
#define MASK_AT_PIN_13 _BV(5)
#define MASK_AT_PIN_14 _BV(0)
#define MASK_AT_PIN_15 _BV(1)
#define MASK_AT_PIN_16 _BV(2)
#define MASK_AT_PIN_17 _BV(3)
#define MASK_AT_PIN_18 _BV(4)
#define MASK_AT_PIN_19 _BV(5)
#define MASK_AT_PIN_20 _BV(6)
#define MASK_AT_PIN_21 _BV(7)
#endif /* ARDUINO_H */

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tpic6b595_spi/pins/digital.h Normal file
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/*
* digital.h
*
* Lightweight macro implementation of AVR pin numbering for
* accessing Atmel digital and analog pins.
*
* pin_mode(A1, OUTPUT);
* digital_write(A1, HIGH);
* pin_mode(A2, INPUT);
* digital_read(A2);
*
* This file is based on the excellent ArduinoLite project by
* Shikai Chen <csk@live.com>.
*
* http://code.google.com/p/arduino-lite/
* http://www.csksoft.net/
*
* Copyright (c) 2010-2011 Shikai Chen, Mika Tuupola
*
* Licensed under the LGPL 2.1 license:
* http://www.opensource.org/licenses/lgpl-2.1.php
*/
#ifndef DIGITAL_H
#define DIGITAL_H
#include "pins.h"
#define digital_read(pin) EXPAND_WRAPPER(_DIGITAL_READ, PIN_TO_PORT(pin), PIN_TO_MASK(pin))
#define digital_read_raw(pin) EXPAND_WRAPPER(_DIGITAL_READ_RAW, PIN_TO_PORT(pin), PIN_TO_MASK(pin))
#define digital_write(pin, val) DIGITAL_WRITE_##val(pin)
#define digital_toggle(pin) EXPAND_WRAPPER(_DIGITAL_TOGGLE, PIN_TO_PORT(pin), PIN_TO_MASK(pin))
#endif /* DIGITAL_H */

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tpic6b595_spi/pins/pins.h Normal file
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/*
* pins.h
*
* Lightweight macro implementation of AVR pin numbering for
* accessing Atmel digital and analog pins.
*
* pin_mode(A1, OUTPUT);
* digital_write(A1, HIGH);
* pin_mode(A2, INPUT);
* digital_read(A2);
*
* This file is based on the excellent ArduinoLite project by
* Shikai Chen <csk@live.com>.
*
* http://code.google.com/p/arduino-lite/
* http://www.csksoft.net/
*
* Copyright (c) 2010-2011 Shikai Chen, Mika Tuupola
*
* Licensed under the LGPL 2.1 license:
* http://www.opensource.org/licenses/lgpl-2.1.php
*/
#ifndef PINS_H
#define PINS_H
#include <avr/sfr_defs.h>
#include <avr/io.h>
#include "arduino.h"
#define HIGH 0x1
#define LOW 0x0
#define INPUT 0x0
#define OUTPUT 0x1
#define ENABLE 0x1
#define DISABLE 0x0
#define PIN_TO_PORT(x) PORT_AT_PIN_##x
#define PIN_TO_MASK(x) MASK_AT_PIN_##x
#define PORT_TO_DIRECTION_REGISTER(x) DIRECTION_REGISTER_AT_##x
#define PORT_TO_OUTPUT_REGISTER(x) OUTPUT_REGISTER_AT_##x
#define PORT_TO_INPUT_REGISTER(x) INPUT_REGISTER_AT_##x
#ifdef PORTA
#define DIRECTION_REGISTER_AT_PortA DDRA
#define OUTPUT_REGISTER_AT_PortA PORTA
#define INPUT_REGISTER_AT_PortA PINA
#define PORT_AT_PIN_A0 PortA
#define PORT_AT_PIN_A1 PortA
#define PORT_AT_PIN_A2 PortA
#define PORT_AT_PIN_A3 PortA
#define PORT_AT_PIN_A4 PortA
#define PORT_AT_PIN_A5 PortA
#define PORT_AT_PIN_A6 PortA
#define PORT_AT_PIN_A7 PortA
#define MASK_AT_PIN_A0 _BV(0)
#define MASK_AT_PIN_A1 _BV(1)
#define MASK_AT_PIN_A2 _BV(2)
#define MASK_AT_PIN_A3 _BV(3)
#define MASK_AT_PIN_A4 _BV(4)
#define MASK_AT_PIN_A5 _BV(5)
#define MASK_AT_PIN_A6 _BV(6)
#define MASK_AT_PIN_A7 _BV(7)
#endif
//#ifdef PORTB
#define DIRECTION_REGISTER_AT_PortB DDRB
#define OUTPUT_REGISTER_AT_PortB PORTB
#define INPUT_REGISTER_AT_PortB PINB
#define PORT_AT_PIN_B0 PortB
#define PORT_AT_PIN_B1 PortB
#define PORT_AT_PIN_B2 PortB
#define PORT_AT_PIN_B3 PortB
#define PORT_AT_PIN_B4 PortB
#define PORT_AT_PIN_B5 PortB
#define PORT_AT_PIN_B6 PortB
#define PORT_AT_PIN_B7 PortB
#define MASK_AT_PIN_B0 _BV(0)
#define MASK_AT_PIN_B1 _BV(1)
#define MASK_AT_PIN_B2 _BV(2)
#define MASK_AT_PIN_B3 _BV(3)
#define MASK_AT_PIN_B4 _BV(4)
#define MASK_AT_PIN_B5 _BV(5)
#define MASK_AT_PIN_B6 _BV(6)
#define MASK_AT_PIN_B7 _BV(7)
//#endif
#ifdef PORTC
#define DIRECTION_REGISTER_AT_PortC DDRC
#define OUTPUT_REGISTER_AT_PortC PORTC
#define INPUT_REGISTER_AT_PortC PINC
#define PORT_AT_PIN_C0 PortC
#define PORT_AT_PIN_C1 PortC
#define PORT_AT_PIN_C2 PortC
#define PORT_AT_PIN_C3 PortC
#define PORT_AT_PIN_C4 PortC
#define PORT_AT_PIN_C5 PortC
#define PORT_AT_PIN_C6 PortC
#define PORT_AT_PIN_C7 PortC
#define MASK_AT_PIN_C0 _BV(0)
#define MASK_AT_PIN_C1 _BV(1)
#define MASK_AT_PIN_C2 _BV(2)
#define MASK_AT_PIN_C3 _BV(3)
#define MASK_AT_PIN_C4 _BV(4)
#define MASK_AT_PIN_C5 _BV(5)
#define MASK_AT_PIN_C6 _BV(6)
#define MASK_AT_PIN_C7 _BV(7)
#endif
#ifdef PORTD
#define DIRECTION_REGISTER_AT_PortD DDRD
#define OUTPUT_REGISTER_AT_PortD PORTD
#define INPUT_REGISTER_AT_PortD PIND
#define PORT_AT_PIN_D0 PortD
#define PORT_AT_PIN_D1 PortD
#define PORT_AT_PIN_D2 PortD
#define PORT_AT_PIN_D3 PortD
#define PORT_AT_PIN_D4 PortD
#define PORT_AT_PIN_D5 PortD
#define PORT_AT_PIN_D6 PortD
#define PORT_AT_PIN_D7 PortD
#define MASK_AT_PIN_D0 _BV(0)
#define MASK_AT_PIN_D1 _BV(1)
#define MASK_AT_PIN_D2 _BV(2)
#define MASK_AT_PIN_D3 _BV(3)
#define MASK_AT_PIN_D4 _BV(4)
#define MASK_AT_PIN_D5 _BV(5)
#define MASK_AT_PIN_D6 _BV(6)
#define MASK_AT_PIN_D7 _BV(7)
#endif
#ifdef PORTE
#define DIRECTION_REGISTER_AT_PortE DDRE
#define OUTPUT_REGISTER_AT_PortE PORTE
#define INPUT_REGISTER_AT_PortE PINE
#define PORT_AT_PIN_E0 PortE
#define PORT_AT_PIN_E1 PortE
#define PORT_AT_PIN_E2 PortE
#define PORT_AT_PIN_E3 PortE
#define PORT_AT_PIN_E4 PortE
#define PORT_AT_PIN_E5 PortE
#define PORT_AT_PIN_E6 PortE
#define PORT_AT_PIN_E7 PortE
#define MASK_AT_PIN_E0 _BV(0)
#define MASK_AT_PIN_E1 _BV(1)
#define MASK_AT_PIN_E2 _BV(2)
#define MASK_AT_PIN_E3 _BV(3)
#define MASK_AT_PIN_E4 _BV(4)
#define MASK_AT_PIN_E5 _BV(5)
#define MASK_AT_PIN_E6 _BV(6)
#define MASK_AT_PIN_E7 _BV(7)
#endif
#ifdef PORTF
#define DIRECTION_REGISTER_AT_PortF DDRF
#define OUTPUT_REGISTER_AT_PortF PORTF
#define INPUT_REGISTER_AT_PortF PINF
#define PORT_AT_PIN_F0 PortF
#define PORT_AT_PIN_F1 PortF
#define PORT_AT_PIN_F2 PortF
#define PORT_AT_PIN_F3 PortF
#define PORT_AT_PIN_F4 PortF
#define PORT_AT_PIN_F5 PortF
#define PORT_AT_PIN_F6 PortF
#define PORT_AT_PIN_F7 PortF
#define MASK_AT_PIN_F0 _BV(0)
#define MASK_AT_PIN_F1 _BV(1)
#define MASK_AT_PIN_F2 _BV(2)
#define MASK_AT_PIN_F3 _BV(3)
#define MASK_AT_PIN_F4 _BV(4)
#define MASK_AT_PIN_F5 _BV(5)
#define MASK_AT_PIN_F6 _BV(6)
#define MASK_AT_PIN_F7 _BV(7)
#endif
#define MERGE_TO_FUNC(prefix, id) prefix##_##id
#define EXPAND_WRAPPER(NEXTLEVEL, ...) NEXTLEVEL(__VA_ARGS__)
#define _SET_OUTPUT(port_id, msk) PORT_TO_DIRECTION_REGISTER(port_id) |= (msk)
#define _SET_INPUT(port_id, msk) PORT_TO_DIRECTION_REGISTER(port_id) &= ~(msk)
#define _DIGITAL_WRITE_HIGH(port_id, msk) PORT_TO_OUTPUT_REGISTER(port_id) |= (msk)
#define _DIGITAL_WRITE_LOW(port_id, msk) PORT_TO_OUTPUT_REGISTER(port_id) &= ~(msk)
#define _DIGITAL_READ_RAW(port_id, msk) ((PORT_TO_INPUT_REGISTER(port_id)) & (msk))
#define _DIGITAL_READ(port_id, msk) (((PORT_TO_INPUT_REGISTER(port_id)) & (msk)) != 0 ? 1 : 0)
#define _DIGITAL_TOGGLE(port_id, msk) PORT_TO_OUTPUT_REGISTER(port_id) ^= (msk)
#define SET_1(pin) SET_OUTPUT(pin)
#define SET_0(pin) SET_INPUT(pin)
#define SET_0x1(pin) SET_OUTPUT(pin)
#define SET_0x0(pin) SET_INPUT(pin)
#define DIGITAL_WRITE_HIGH(pin) EXPAND_WRAPPER(_DIGITAL_WRITE_HIGH, PIN_TO_PORT(pin), PIN_TO_MASK(pin))
#define DIGITAL_WRITE_LOW(pin) EXPAND_WRAPPER(_DIGITAL_WRITE_LOW, PIN_TO_PORT(pin), PIN_TO_MASK(pin))
#define DIGITAL_WRITE_1(pin) DIGITAL_WRITE_HIGH(pin)
#define DIGITAL_WRITE_0(pin) DIGITAL_WRITE_LOW(pin)
#define DIGITAL_WRITE_0x1(pin) DIGITAL_WRITE_HIGH(pin)
#define DIGITAL_WRITE_0x0(pin) DIGITAL_WRITE_LOW(pin)
#define DIGITAL_WRITE_ENABLE(pin) DIGITAL_WRITE_HIGH(pin)
#define DIGITAL_WRITE_DISABLE(pin) DIGITAL_WRITE_LOW(pin)
#define SET_OUTPUT(pin) EXPAND_WRAPPER(_SET_OUTPUT, PIN_TO_PORT(pin), PIN_TO_MASK(pin))
#define SET_INPUT(pin) EXPAND_WRAPPER(_SET_INPUT, PIN_TO_PORT(pin), PIN_TO_MASK(pin))
#define pin_mode(pin, mode) SET_##mode(pin)
#define pin_pullup(pin, val) DIGITAL_WRITE_##val(pin)
#endif /* PINS_H */

26
tpic6b595_spi/spi.h
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/*
* spi.h
*
* Copyright 2011 Mika Tuupola
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/mit-license.php
*
*/
#define SPI_SS 10 /* Slave select. PORTB2 LATCH */
#define SPI_MOSI 11 /* Master out slave input. PORTB3 DATA*/
#define SPI_MISO 12 /* Master input slave output. PORTB4 */
#define SPI_SCK 13 /* Serial clock. PORTB5 CLOCK */
#define spi_set_lsb() SPCR |= _BV(DORD)
#define spi_set_msb() SPCR &= ~(_BV(DORD))
#define spi_set_master() SPCR |= _BV(MSTR)
#define spi_set_slave() SPCR &= ~(_BV(MSTR))
#define spi_enable() SPCR |= _BV(SPE)
#define spi_disable() SPCR &= ~(_BV(SPE));
uint8_t spi_transfer(volatile uint8_t data);
void spi_init(void);

6
tpic6b595_spi/spi.c → tpic6b595_spi/spi/spi.c
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@ -8,11 +8,11 @@
* *
*/ */
#include "digital.h" #include "pins/digital.h"
#include "spi.h" #include "spi/spi.h"
void spi_init(void) { void spi_init(void) {
pin_mode(SPI_SCK, OUTPUT); pin_mode(SPI_SCLK, OUTPUT);
pin_mode(SPI_MOSI, OUTPUT); pin_mode(SPI_MOSI, OUTPUT);
pin_mode(SPI_SS, OUTPUT); /* Must be output in Master mode. */ pin_mode(SPI_SS, OUTPUT); /* Must be output in Master mode. */
spi_set_msb(); spi_set_msb();

42
tpic6b595_spi/spi/spi.h Normal file
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/*
* spi.h
*
* http://www.atmel.com/dyn/resources/prod_documents/doc2585.pdf
*
* Copyright 2011 Mika Tuupola
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/mit-license.php
*
*/
/* http://www.atmel.com/dyn/resources/prod_documents/doc8161.pdf */
#if defined(__AVR_ATmega168__) \
|| defined(__AVR_ATmega168P__) \
|| defined(__AVR_ATmega328__) \
|| defined (__AVR_ATmega328P__)
#define SPI_SS PB2 /* Slave Select. PORTB2 LATCH RCK*/
#define SPI_SCLK PB5 /* Serial clock. PORTB5 CLOCK */
#define SPI_MOSI PB3 /* Master Out Slave In. PORTB3 DATA*/
#define SPI_MISO PB4 /* Master In Slave Out PORTB4 */
/* http://www.pjrc.com/teensy/atmega32u4.pdf */
#elif defined (__AVR_ATmega32U4__)
#define SPI_SS B0
#define SPI_SCLK B1
#define SPI_MOSI B2
#define SPI_MISO B3
#endif
#define spi_set_lsb() SPCR |= _BV(DORD)
#define spi_set_msb() SPCR &= ~(_BV(DORD))
#define spi_set_master() SPCR |= _BV(MSTR)
#define spi_set_slave() SPCR &= ~(_BV(MSTR))
#define spi_enable() SPCR |= _BV(SPE)
#define spi_disable() SPCR &= ~(_BV(SPE));
uint8_t spi_transfer(volatile uint8_t data);
void spi_init(void);

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tpic6b595_spi/uart.h
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/*
* uart.h
*
* Copyright 2011 Mika Tuupola
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/mit-license.php
*
*/
int uart_putchar(char c, FILE *stream);
int uart_getchar(FILE *stream);
void uart_init(void);
struct rx_ring;
struct tx_ring;
/* http://www.ermicro.com/blog/?p=325 */
FILE uart_output = FDEV_SETUP_STREAM(uart_putchar, NULL, _FDEV_SETUP_WRITE);
FILE uart_input = FDEV_SETUP_STREAM(NULL, uart_getchar, _FDEV_SETUP_READ);

112
tpic6b595_spi/uart_async.c
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/*
* uart_async.c
*
* Copyright 2011 Mika Tuupola
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/mit-license.php
*
*/
/* Based on Atmel Application Note AVR 306 */
#include <avr/io.h>
#include <avr/interrupt.h>
#include <stdio.h>
#ifndef BAUD
#define BAUD 9600
#endif
#include <util/setbaud.h>
#ifndef UART_RX_BUFFER_SIZE
#define UART_RX_BUFFER_SIZE 32
#endif
#ifndef UART_TX_BUFFER_SIZE
#define UART_TX_BUFFER_SIZE 256
#endif
struct tx_ring {
int buffer[UART_TX_BUFFER_SIZE];
int start;
int end;
};
struct rx_ring {
int buffer[UART_RX_BUFFER_SIZE];
int start;
int end;
};
static struct tx_ring tx_buffer;
static struct rx_ring rx_buffer;
/* http://www.cs.mun.ca/~rod/Winter2007/4723/notes/serial/serial.html */
void uart_init(void) {
tx_buffer.start = 0;
tx_buffer.end = 0;
rx_buffer.start = 0;
rx_buffer.end = 0;
UBRR0H = UBRRH_VALUE;
UBRR0L = UBRRL_VALUE;
UCSR0C = _BV(UCSZ01) | _BV(UCSZ00); /* 8-bit data */
UCSR0B = _BV(RXEN0) | _BV(TXEN0); /* Enable RX and TX */
sei();
}
int uart_putchar(char c, FILE *stream) {
if (c == '\n') {
uart_putchar('\r', stream);
}
int write_pointer = (tx_buffer.end + 1) % UART_TX_BUFFER_SIZE;
if (write_pointer != tx_buffer.start){
tx_buffer.buffer[tx_buffer.end] = c;
tx_buffer.end = write_pointer;
/* Data available. Enable the transmit interrupt for serial port 0. */
UCSR0B |= _BV(UDRIE0);
}
return 0;
}
int uart_getchar(FILE *stream) {
int read_pointer = (rx_buffer.start + 1) % UART_RX_BUFFER_SIZE;
rx_buffer.start = read_pointer;
return rx_buffer.buffer[read_pointer];
}
ISR(USART_RX_vect) {
int write_pointer = (rx_buffer.end + 1) % UART_RX_BUFFER_SIZE;
/* Add next byte to ringbuffer if it has space available. */
if (write_pointer != rx_buffer.start){
rx_buffer.buffer[rx_buffer.end] = UDR0;
rx_buffer.end = write_pointer;
}
}
ISR(USART_UDRE_vect){
int read_pointer = (tx_buffer.start + 1) % UART_TX_BUFFER_SIZE;
/* Transmit next byte if data available in ringbuffer. */
if (read_pointer != tx_buffer.end) {
UDR0 = tx_buffer.buffer[read_pointer];
tx_buffer.start = read_pointer;
} else {
/* Nothing to send. Disable the transmit interrupt for serial port 0. */
UCSR0B &= ~_BV(UDRIE0);
}
}