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//https://github.com/niteris/ArduinoSoftSpi
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#include <Arduino.h>
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#ifdef __arm__
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#ifdef CORE_TEENSY
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//------------------------------------------------------------------------------
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/** read pin value
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* @param[in] pin Arduino pin number
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* @return value read
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*/
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static inline __attribute__((always_inline))
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bool fastDigitalRead(uint8_t pin) {
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return *portInputRegister(pin);
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}
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//------------------------------------------------------------------------------
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/** Set pin value
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* @param[in] pin Arduino pin number
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* @param[in] level value to write
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*/
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static inline __attribute__((always_inline))
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void fastDigitalWrite(uint8_t pin, bool value) {
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if (value) {
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*portSetRegister(pin) = 1;
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} else {
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*portClearRegister(pin) = 1;
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}
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}
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#else // CORE_TEENSY
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//------------------------------------------------------------------------------
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/** read pin value
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* @param[in] pin Arduino pin number
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* @return value read
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*/
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static inline __attribute__((always_inline))
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bool fastDigitalRead(uint8_t pin){
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return g_APinDescription[pin].pPort->PIO_PDSR & g_APinDescription[pin].ulPin;
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}
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//------------------------------------------------------------------------------
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/** Set pin value
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* @param[in] pin Arduino pin number
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* @param[in] level value to write
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*/
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static inline __attribute__((always_inline))
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void fastDigitalWrite(uint8_t pin, bool value){
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if (value)
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g_APinDescription[pin].pPort->PIO_SODR = g_APinDescription[pin].ulPin;
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else
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g_APinDescription[pin].pPort->PIO_CODR = g_APinDescription[pin].ulPin;
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}
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#endif // CORE_TEENSY
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//------------------------------------------------------------------------------
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inline void fastDigitalToggle(uint8_t pin) {
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fastDigitalWrite(pin, !fastDigitalRead(pin));
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}
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//------------------------------------------------------------------------------
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inline void fastPinMode(uint8_t pin, bool mode) {pinMode(pin, mode);}
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#else // __arm__
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#include <avr/io.h>
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#include <util/atomic.h>
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//------------------------------------------------------------------------------
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/**
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* @class pin_map_t
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* @brief struct for mapping digital pins
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*/
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struct pin_map_t {
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volatile uint8_t* ddr; /**< address of DDR for this pin */
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volatile uint8_t* pin; /**< address of PIN for this pin */
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volatile uint8_t* port; /**< address of PORT for this pin */
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uint8_t bit; /**< bit number for this pin */
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};
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//------------------------------------------------------------------------------
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#if defined(__AVR_ATmega168__)\
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||defined(__AVR_ATmega168P__)\
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||defined(__AVR_ATmega328P__)
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// 168 and 328 Arduinos
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const static pin_map_t pinMap[] = {
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{&DDRD, &PIND, &PORTD, 0}, // D0 0
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{&DDRD, &PIND, &PORTD, 1}, // D1 1
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{&DDRD, &PIND, &PORTD, 2}, // D2 2
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{&DDRD, &PIND, &PORTD, 3}, // D3 3
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{&DDRD, &PIND, &PORTD, 4}, // D4 4
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{&DDRD, &PIND, &PORTD, 5}, // D5 5
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{&DDRD, &PIND, &PORTD, 6}, // D6 6
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{&DDRD, &PIND, &PORTD, 7}, // D7 7
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{&DDRB, &PINB, &PORTB, 0}, // B0 8
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{&DDRB, &PINB, &PORTB, 1}, // B1 9
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{&DDRB, &PINB, &PORTB, 2}, // B2 10
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{&DDRB, &PINB, &PORTB, 3}, // B3 11
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{&DDRB, &PINB, &PORTB, 4}, // B4 12
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{&DDRB, &PINB, &PORTB, 5}, // B5 13
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{&DDRC, &PINC, &PORTC, 0}, // C0 14
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{&DDRC, &PINC, &PORTC, 1}, // C1 15
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{&DDRC, &PINC, &PORTC, 2}, // C2 16
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{&DDRC, &PINC, &PORTC, 3}, // C3 17
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{&DDRC, &PINC, &PORTC, 4}, // C4 18
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{&DDRC, &PINC, &PORTC, 5} // C5 19
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};
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//------------------------------------------------------------------------------
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#elif defined(__AVR_ATmega1280__)\
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|| defined(__AVR_ATmega2560__)
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// Mega
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static const pin_map_t pinMap[] = {
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{&DDRE, &PINE, &PORTE, 0}, // E0 0
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{&DDRE, &PINE, &PORTE, 1}, // E1 1
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{&DDRE, &PINE, &PORTE, 4}, // E4 2
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{&DDRE, &PINE, &PORTE, 5}, // E5 3
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{&DDRG, &PING, &PORTG, 5}, // G5 4
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{&DDRE, &PINE, &PORTE, 3}, // E3 5
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{&DDRH, &PINH, &PORTH, 3}, // H3 6
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{&DDRH, &PINH, &PORTH, 4}, // H4 7
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{&DDRH, &PINH, &PORTH, 5}, // H5 8
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{&DDRH, &PINH, &PORTH, 6}, // H6 9
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{&DDRB, &PINB, &PORTB, 4}, // B4 10
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{&DDRB, &PINB, &PORTB, 5}, // B5 11
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{&DDRB, &PINB, &PORTB, 6}, // B6 12
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{&DDRB, &PINB, &PORTB, 7}, // B7 13
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{&DDRJ, &PINJ, &PORTJ, 1}, // J1 14
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{&DDRJ, &PINJ, &PORTJ, 0}, // J0 15
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{&DDRH, &PINH, &PORTH, 1}, // H1 16
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{&DDRH, &PINH, &PORTH, 0}, // H0 17
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{&DDRD, &PIND, &PORTD, 3}, // D3 18
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{&DDRD, &PIND, &PORTD, 2}, // D2 19
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{&DDRD, &PIND, &PORTD, 1}, // D1 20
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{&DDRD, &PIND, &PORTD, 0}, // D0 21
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{&DDRA, &PINA, &PORTA, 0}, // A0 22
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{&DDRA, &PINA, &PORTA, 1}, // A1 23
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{&DDRA, &PINA, &PORTA, 2}, // A2 24
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{&DDRA, &PINA, &PORTA, 3}, // A3 25
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{&DDRA, &PINA, &PORTA, 4}, // A4 26
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{&DDRA, &PINA, &PORTA, 5}, // A5 27
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{&DDRA, &PINA, &PORTA, 6}, // A6 28
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{&DDRA, &PINA, &PORTA, 7}, // A7 29
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{&DDRC, &PINC, &PORTC, 7}, // C7 30
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{&DDRC, &PINC, &PORTC, 6}, // C6 31
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{&DDRC, &PINC, &PORTC, 5}, // C5 32
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{&DDRC, &PINC, &PORTC, 4}, // C4 33
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{&DDRC, &PINC, &PORTC, 3}, // C3 34
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{&DDRC, &PINC, &PORTC, 2}, // C2 35
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{&DDRC, &PINC, &PORTC, 1}, // C1 36
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{&DDRC, &PINC, &PORTC, 0}, // C0 37
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{&DDRD, &PIND, &PORTD, 7}, // D7 38
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{&DDRG, &PING, &PORTG, 2}, // G2 39
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{&DDRG, &PING, &PORTG, 1}, // G1 40
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{&DDRG, &PING, &PORTG, 0}, // G0 41
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{&DDRL, &PINL, &PORTL, 7}, // L7 42
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{&DDRL, &PINL, &PORTL, 6}, // L6 43
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{&DDRL, &PINL, &PORTL, 5}, // L5 44
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{&DDRL, &PINL, &PORTL, 4}, // L4 45
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{&DDRL, &PINL, &PORTL, 3}, // L3 46
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{&DDRL, &PINL, &PORTL, 2}, // L2 47
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{&DDRL, &PINL, &PORTL, 1}, // L1 48
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{&DDRL, &PINL, &PORTL, 0}, // L0 49
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{&DDRB, &PINB, &PORTB, 3}, // B3 50
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{&DDRB, &PINB, &PORTB, 2}, // B2 51
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{&DDRB, &PINB, &PORTB, 1}, // B1 52
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{&DDRB, &PINB, &PORTB, 0}, // B0 53
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{&DDRF, &PINF, &PORTF, 0}, // F0 54
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{&DDRF, &PINF, &PORTF, 1}, // F1 55
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{&DDRF, &PINF, &PORTF, 2}, // F2 56
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{&DDRF, &PINF, &PORTF, 3}, // F3 57
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{&DDRF, &PINF, &PORTF, 4}, // F4 58
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{&DDRF, &PINF, &PORTF, 5}, // F5 59
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{&DDRF, &PINF, &PORTF, 6}, // F6 60
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{&DDRF, &PINF, &PORTF, 7}, // F7 61
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{&DDRK, &PINK, &PORTK, 0}, // K0 62
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{&DDRK, &PINK, &PORTK, 1}, // K1 63
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{&DDRK, &PINK, &PORTK, 2}, // K2 64
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{&DDRK, &PINK, &PORTK, 3}, // K3 65
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{&DDRK, &PINK, &PORTK, 4}, // K4 66
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{&DDRK, &PINK, &PORTK, 5}, // K5 67
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{&DDRK, &PINK, &PORTK, 6}, // K6 68
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{&DDRK, &PINK, &PORTK, 7}, // K7 69
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//pins_MIGHTYBOARD_REVE.h
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{&DDRG, &PING, &PORTG, 4}, // G4 70
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{&DDRG, &PING, &PORTG, 3}, // G3 71
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{&DDRJ, &PINJ, &PORTJ, 2}, // J2 72
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{&DDRJ, &PINJ, &PORTJ, 3}, // J3 73
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{&DDRJ, &PINJ, &PORTJ, 7}, // J7 74
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{&DDRJ, &PINJ, &PORTJ, 4}, // J4 75
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{&DDRJ, &PINJ, &PORTJ, 5}, // J5 76
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{&DDRJ, &PINJ, &PORTJ, 6}, // J6 77
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{&DDRE, &PINE, &PORTE, 2}, // E2 78
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{&DDRE, &PINE, &PORTE, 6} // E6 79
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};
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//------------------------------------------------------------------------------
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#elif defined(__AVR_ATmega1284P__)\
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|| defined(__AVR_ATmega1284__)\
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|| defined(__AVR_ATmega644P__)\
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|| defined(__AVR_ATmega644__)\
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|| defined(__AVR_ATmega64__)\
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|| defined(__AVR_ATmega32__)\
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|| defined(__AVR_ATmega324__)\
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|| defined(__AVR_ATmega16__)
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#if defined(VARIANT_MIGHTY)
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// Mighty Layout
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static const pin_map_t pinMap[] = {
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{&DDRB, &PINB, &PORTB, 0}, // B0 0
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{&DDRB, &PINB, &PORTB, 1}, // B1 1
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{&DDRB, &PINB, &PORTB, 2}, // B2 2
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{&DDRB, &PINB, &PORTB, 3}, // B3 3
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{&DDRB, &PINB, &PORTB, 4}, // B4 4
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{&DDRB, &PINB, &PORTB, 5}, // B5 5
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{&DDRB, &PINB, &PORTB, 6}, // B6 6
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{&DDRB, &PINB, &PORTB, 7}, // B7 7
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{&DDRD, &PIND, &PORTD, 0}, // D0 8
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{&DDRD, &PIND, &PORTD, 1}, // D1 9
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{&DDRD, &PIND, &PORTD, 2}, // D2 10
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{&DDRD, &PIND, &PORTD, 3}, // D3 11
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{&DDRD, &PIND, &PORTD, 4}, // D4 12
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{&DDRD, &PIND, &PORTD, 5}, // D5 13
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{&DDRD, &PIND, &PORTD, 6}, // D6 14
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{&DDRD, &PIND, &PORTD, 7}, // D7 15
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{&DDRC, &PINC, &PORTC, 0}, // C0 16
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{&DDRC, &PINC, &PORTC, 1}, // C1 17
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{&DDRC, &PINC, &PORTC, 2}, // C2 18
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{&DDRC, &PINC, &PORTC, 3}, // C3 19
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{&DDRC, &PINC, &PORTC, 4}, // C4 20
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{&DDRC, &PINC, &PORTC, 5}, // C5 21
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{&DDRC, &PINC, &PORTC, 6}, // C6 22
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{&DDRC, &PINC, &PORTC, 7}, // C7 23
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{&DDRA, &PINA, &PORTA, 0}, // A0 24
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{&DDRA, &PINA, &PORTA, 1}, // A1 25
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{&DDRA, &PINA, &PORTA, 2}, // A2 26
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{&DDRA, &PINA, &PORTA, 3}, // A3 27
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{&DDRA, &PINA, &PORTA, 4}, // A4 28
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{&DDRA, &PINA, &PORTA, 5}, // A5 29
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{&DDRA, &PINA, &PORTA, 6}, // A6 30
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{&DDRA, &PINA, &PORTA, 7} // A7 31
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};
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#elif defined(VARIANT_BOBUINO)
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// Bobuino Layout
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static const pin_map_t pinMap[] = {
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{&DDRD, &PIND, &PORTD, 0}, // D0 0
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{&DDRD, &PIND, &PORTD, 1}, // D1 1
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{&DDRD, &PIND, &PORTD, 2}, // D2 2
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{&DDRD, &PIND, &PORTD, 3}, // D3 3
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{&DDRB, &PINB, &PORTB, 0}, // B0 4
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{&DDRB, &PINB, &PORTB, 1}, // B1 5
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{&DDRB, &PINB, &PORTB, 2}, // B2 6
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{&DDRB, &PINB, &PORTB, 3}, // B3 7
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{&DDRD, &PIND, &PORTD, 5}, // D5 8
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{&DDRD, &PIND, &PORTD, 6}, // D6 9
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{&DDRB, &PINB, &PORTB, 4}, // B4 10
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{&DDRB, &PINB, &PORTB, 5}, // B5 11
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{&DDRB, &PINB, &PORTB, 6}, // B6 12
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{&DDRB, &PINB, &PORTB, 7}, // B7 13
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{&DDRA, &PINA, &PORTA, 7}, // A7 14
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{&DDRA, &PINA, &PORTA, 6}, // A6 15
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{&DDRA, &PINA, &PORTA, 5}, // A5 16
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{&DDRA, &PINA, &PORTA, 4}, // A4 17
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{&DDRA, &PINA, &PORTA, 3}, // A3 18
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{&DDRA, &PINA, &PORTA, 2}, // A2 19
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{&DDRA, &PINA, &PORTA, 1}, // A1 20
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{&DDRA, &PINA, &PORTA, 0}, // A0 21
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{&DDRC, &PINC, &PORTC, 0}, // C0 22
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{&DDRC, &PINC, &PORTC, 1}, // C1 23
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{&DDRC, &PINC, &PORTC, 2}, // C2 24
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{&DDRC, &PINC, &PORTC, 3}, // C3 25
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{&DDRC, &PINC, &PORTC, 4}, // C4 26
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{&DDRC, &PINC, &PORTC, 5}, // C5 27
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{&DDRC, &PINC, &PORTC, 6}, // C6 28
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{&DDRC, &PINC, &PORTC, 7}, // C7 29
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{&DDRD, &PIND, &PORTD, 4}, // D4 30
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{&DDRD, &PIND, &PORTD, 7} // D7 31
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};
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#elif defined(VARIANT_STANDARD)
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// Standard Layout
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static const pin_map_t pinMap[] = {
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272 |
{&DDRB, &PINB, &PORTB, 0}, // B0 0
|
|
|
273 |
{&DDRB, &PINB, &PORTB, 1}, // B1 1
|
|
|
274 |
{&DDRB, &PINB, &PORTB, 2}, // B2 2
|
|
|
275 |
{&DDRB, &PINB, &PORTB, 3}, // B3 3
|
|
|
276 |
{&DDRB, &PINB, &PORTB, 4}, // B4 4
|
|
|
277 |
{&DDRB, &PINB, &PORTB, 5}, // B5 5
|
|
|
278 |
{&DDRB, &PINB, &PORTB, 6}, // B6 6
|
|
|
279 |
{&DDRB, &PINB, &PORTB, 7}, // B7 7
|
|
|
280 |
{&DDRD, &PIND, &PORTD, 0}, // D0 8
|
|
|
281 |
{&DDRD, &PIND, &PORTD, 1}, // D1 9
|
|
|
282 |
{&DDRD, &PIND, &PORTD, 2}, // D2 10
|
|
|
283 |
{&DDRD, &PIND, &PORTD, 3}, // D3 11
|
|
|
284 |
{&DDRD, &PIND, &PORTD, 4}, // D4 12
|
|
|
285 |
{&DDRD, &PIND, &PORTD, 5}, // D5 13
|
|
|
286 |
{&DDRD, &PIND, &PORTD, 6}, // D6 14
|
|
|
287 |
{&DDRD, &PIND, &PORTD, 7}, // D7 15
|
|
|
288 |
{&DDRC, &PINC, &PORTC, 0}, // C0 16
|
|
|
289 |
{&DDRC, &PINC, &PORTC, 1}, // C1 17
|
|
|
290 |
{&DDRC, &PINC, &PORTC, 2}, // C2 18
|
|
|
291 |
{&DDRC, &PINC, &PORTC, 3}, // C3 19
|
|
|
292 |
{&DDRC, &PINC, &PORTC, 4}, // C4 20
|
|
|
293 |
{&DDRC, &PINC, &PORTC, 5}, // C5 21
|
|
|
294 |
{&DDRC, &PINC, &PORTC, 6}, // C6 22
|
|
|
295 |
{&DDRC, &PINC, &PORTC, 7}, // C7 23
|
|
|
296 |
{&DDRA, &PINA, &PORTA, 7}, // A7 24
|
|
|
297 |
{&DDRA, &PINA, &PORTA, 6}, // A6 25
|
|
|
298 |
{&DDRA, &PINA, &PORTA, 5}, // A5 26
|
|
|
299 |
{&DDRA, &PINA, &PORTA, 4}, // A4 27
|
|
|
300 |
{&DDRA, &PINA, &PORTA, 3}, // A3 28
|
|
|
301 |
{&DDRA, &PINA, &PORTA, 2}, // A2 29
|
|
|
302 |
{&DDRA, &PINA, &PORTA, 1}, // A1 30
|
|
|
303 |
{&DDRA, &PINA, &PORTA, 0} // A0 31
|
|
|
304 |
};
|
|
|
305 |
#else // VARIANT_MIGHTY
|
|
|
306 |
#error Undefined variant 1284, 644, 324, 64, 32
|
|
|
307 |
#endif // VARIANT_MIGHTY
|
|
|
308 |
//------------------------------------------------------------------------------
|
|
|
309 |
#elif defined(__AVR_ATmega32U4__)
|
|
|
310 |
#ifdef CORE_TEENSY
|
|
|
311 |
// Teensy 2.0
|
|
|
312 |
static const pin_map_t pinMap[] = {
|
|
|
313 |
{&DDRB, &PINB, &PORTB, 0}, // B0 0
|
|
|
314 |
{&DDRB, &PINB, &PORTB, 1}, // B1 1
|
|
|
315 |
{&DDRB, &PINB, &PORTB, 2}, // B2 2
|
|
|
316 |
{&DDRB, &PINB, &PORTB, 3}, // B3 3
|
|
|
317 |
{&DDRB, &PINB, &PORTB, 7}, // B7 4
|
|
|
318 |
{&DDRD, &PIND, &PORTD, 0}, // D0 5
|
|
|
319 |
{&DDRD, &PIND, &PORTD, 1}, // D1 6
|
|
|
320 |
{&DDRD, &PIND, &PORTD, 2}, // D2 7
|
|
|
321 |
{&DDRD, &PIND, &PORTD, 3}, // D3 8
|
|
|
322 |
{&DDRC, &PINC, &PORTC, 6}, // C6 9
|
|
|
323 |
{&DDRC, &PINC, &PORTC, 7}, // C7 10
|
|
|
324 |
{&DDRD, &PIND, &PORTD, 6}, // D6 11
|
|
|
325 |
{&DDRD, &PIND, &PORTD, 7}, // D7 12
|
|
|
326 |
{&DDRB, &PINB, &PORTB, 4}, // B4 13
|
|
|
327 |
{&DDRB, &PINB, &PORTB, 5}, // B5 14
|
|
|
328 |
{&DDRB, &PINB, &PORTB, 6}, // B6 15
|
|
|
329 |
{&DDRF, &PINF, &PORTF, 7}, // F7 16
|
|
|
330 |
{&DDRF, &PINF, &PORTF, 6}, // F6 17
|
|
|
331 |
{&DDRF, &PINF, &PORTF, 5}, // F5 18
|
|
|
332 |
{&DDRF, &PINF, &PORTF, 4}, // F4 19
|
|
|
333 |
{&DDRF, &PINF, &PORTF, 1}, // F1 20
|
|
|
334 |
{&DDRF, &PINF, &PORTF, 0}, // F0 21
|
|
|
335 |
{&DDRD, &PIND, &PORTD, 4}, // D4 22
|
|
|
336 |
{&DDRD, &PIND, &PORTD, 5}, // D5 23
|
|
|
337 |
{&DDRE, &PINE, &PORTE, 6} // E6 24
|
|
|
338 |
};
|
|
|
339 |
//------------------------------------------------------------------------------
|
|
|
340 |
#else // CORE_TEENSY
|
|
|
341 |
// Leonardo
|
|
|
342 |
static const pin_map_t pinMap[] = {
|
|
|
343 |
{&DDRD, &PIND, &PORTD, 2}, // D2 0
|
|
|
344 |
{&DDRD, &PIND, &PORTD, 3}, // D3 1
|
|
|
345 |
{&DDRD, &PIND, &PORTD, 1}, // D1 2
|
|
|
346 |
{&DDRD, &PIND, &PORTD, 0}, // D0 3
|
|
|
347 |
{&DDRD, &PIND, &PORTD, 4}, // D4 4
|
|
|
348 |
{&DDRC, &PINC, &PORTC, 6}, // C6 5
|
|
|
349 |
{&DDRD, &PIND, &PORTD, 7}, // D7 6
|
|
|
350 |
{&DDRE, &PINE, &PORTE, 6}, // E6 7
|
|
|
351 |
{&DDRB, &PINB, &PORTB, 4}, // B4 8
|
|
|
352 |
{&DDRB, &PINB, &PORTB, 5}, // B5 9
|
|
|
353 |
{&DDRB, &PINB, &PORTB, 6}, // B6 10
|
|
|
354 |
{&DDRB, &PINB, &PORTB, 7}, // B7 11
|
|
|
355 |
{&DDRD, &PIND, &PORTD, 6}, // D6 12
|
|
|
356 |
{&DDRC, &PINC, &PORTC, 7}, // C7 13
|
|
|
357 |
{&DDRB, &PINB, &PORTB, 3}, // B3 14
|
|
|
358 |
{&DDRB, &PINB, &PORTB, 1}, // B1 15
|
|
|
359 |
{&DDRB, &PINB, &PORTB, 2}, // B2 16
|
|
|
360 |
{&DDRB, &PINB, &PORTB, 0}, // B0 17
|
|
|
361 |
{&DDRF, &PINF, &PORTF, 7}, // F7 18
|
|
|
362 |
{&DDRF, &PINF, &PORTF, 6}, // F6 19
|
|
|
363 |
{&DDRF, &PINF, &PORTF, 5}, // F5 20
|
|
|
364 |
{&DDRF, &PINF, &PORTF, 4}, // F4 21
|
|
|
365 |
{&DDRF, &PINF, &PORTF, 1}, // F1 22
|
|
|
366 |
{&DDRF, &PINF, &PORTF, 0}, // F0 23
|
|
|
367 |
{&DDRD, &PIND, &PORTD, 4}, // D4 24
|
|
|
368 |
{&DDRD, &PIND, &PORTD, 7}, // D7 25
|
|
|
369 |
{&DDRB, &PINB, &PORTB, 4}, // B4 26
|
|
|
370 |
{&DDRB, &PINB, &PORTB, 5}, // B5 27
|
|
|
371 |
{&DDRB, &PINB, &PORTB, 6}, // B6 28
|
|
|
372 |
{&DDRD, &PIND, &PORTD, 6} // D6 29
|
|
|
373 |
};
|
|
|
374 |
#endif // CORE_TEENSY
|
|
|
375 |
//------------------------------------------------------------------------------
|
|
|
376 |
#elif defined(__AVR_AT90USB646__)\
|
|
|
377 |
|| defined(__AVR_AT90USB1286__)
|
|
|
378 |
// Teensy++ 1.0 & 2.0
|
|
|
379 |
static const pin_map_t pinMap[] = {
|
|
|
380 |
{&DDRD, &PIND, &PORTD, 0}, // D0 0
|
|
|
381 |
{&DDRD, &PIND, &PORTD, 1}, // D1 1
|
|
|
382 |
{&DDRD, &PIND, &PORTD, 2}, // D2 2
|
|
|
383 |
{&DDRD, &PIND, &PORTD, 3}, // D3 3
|
|
|
384 |
{&DDRD, &PIND, &PORTD, 4}, // D4 4
|
|
|
385 |
{&DDRD, &PIND, &PORTD, 5}, // D5 5
|
|
|
386 |
{&DDRD, &PIND, &PORTD, 6}, // D6 6
|
|
|
387 |
{&DDRD, &PIND, &PORTD, 7}, // D7 7
|
|
|
388 |
{&DDRE, &PINE, &PORTE, 0}, // E0 8
|
|
|
389 |
{&DDRE, &PINE, &PORTE, 1}, // E1 9
|
|
|
390 |
{&DDRC, &PINC, &PORTC, 0}, // C0 10
|
|
|
391 |
{&DDRC, &PINC, &PORTC, 1}, // C1 11
|
|
|
392 |
{&DDRC, &PINC, &PORTC, 2}, // C2 12
|
|
|
393 |
{&DDRC, &PINC, &PORTC, 3}, // C3 13
|
|
|
394 |
{&DDRC, &PINC, &PORTC, 4}, // C4 14
|
|
|
395 |
{&DDRC, &PINC, &PORTC, 5}, // C5 15
|
|
|
396 |
{&DDRC, &PINC, &PORTC, 6}, // C6 16
|
|
|
397 |
{&DDRC, &PINC, &PORTC, 7}, // C7 17
|
|
|
398 |
{&DDRE, &PINE, &PORTE, 6}, // E6 18
|
|
|
399 |
{&DDRE, &PINE, &PORTE, 7}, // E7 19
|
|
|
400 |
{&DDRB, &PINB, &PORTB, 0}, // B0 20
|
|
|
401 |
{&DDRB, &PINB, &PORTB, 1}, // B1 21
|
|
|
402 |
{&DDRB, &PINB, &PORTB, 2}, // B2 22
|
|
|
403 |
{&DDRB, &PINB, &PORTB, 3}, // B3 23
|
|
|
404 |
{&DDRB, &PINB, &PORTB, 4}, // B4 24
|
|
|
405 |
{&DDRB, &PINB, &PORTB, 5}, // B5 25
|
|
|
406 |
{&DDRB, &PINB, &PORTB, 6}, // B6 26
|
|
|
407 |
{&DDRB, &PINB, &PORTB, 7}, // B7 27
|
|
|
408 |
{&DDRA, &PINA, &PORTA, 0}, // A0 28
|
|
|
409 |
{&DDRA, &PINA, &PORTA, 1}, // A1 29
|
|
|
410 |
{&DDRA, &PINA, &PORTA, 2}, // A2 30
|
|
|
411 |
{&DDRA, &PINA, &PORTA, 3}, // A3 31
|
|
|
412 |
{&DDRA, &PINA, &PORTA, 4}, // A4 32
|
|
|
413 |
{&DDRA, &PINA, &PORTA, 5}, // A5 33
|
|
|
414 |
{&DDRA, &PINA, &PORTA, 6}, // A6 34
|
|
|
415 |
{&DDRA, &PINA, &PORTA, 7}, // A7 35
|
|
|
416 |
{&DDRE, &PINE, &PORTE, 4}, // E4 36
|
|
|
417 |
{&DDRE, &PINE, &PORTE, 5}, // E5 37
|
|
|
418 |
{&DDRF, &PINF, &PORTF, 0}, // F0 38
|
|
|
419 |
{&DDRF, &PINF, &PORTF, 1}, // F1 39
|
|
|
420 |
{&DDRF, &PINF, &PORTF, 2}, // F2 40
|
|
|
421 |
{&DDRF, &PINF, &PORTF, 3}, // F3 41
|
|
|
422 |
{&DDRF, &PINF, &PORTF, 4}, // F4 42
|
|
|
423 |
{&DDRF, &PINF, &PORTF, 5}, // F5 43
|
|
|
424 |
{&DDRF, &PINF, &PORTF, 6}, // F6 44
|
|
|
425 |
{&DDRF, &PINF, &PORTF, 7} // F7 45
|
|
|
426 |
};
|
|
|
427 |
//------------------------------------------------------------------------------
|
|
|
428 |
#else // CPU type
|
|
|
429 |
#error unknown CPU type
|
|
|
430 |
#endif // CPU type
|
|
|
431 |
//------------------------------------------------------------------------------
|
|
|
432 |
/** count of pins */
|
|
|
433 |
static const uint8_t digitalPinCount = sizeof(pinMap)/sizeof(pin_map_t);
|
|
|
434 |
//==============================================================================
|
|
|
435 |
/** generate bad pin number error */
|
|
|
436 |
void badPinNumber(void)
|
|
|
437 |
__attribute__((error("Pin number is too large or not a constant")));
|
|
|
438 |
//------------------------------------------------------------------------------
|
|
|
439 |
/** Check for valid pin number
|
|
|
440 |
* @param[in] pin Number of pin to be checked.
|
|
|
441 |
*/
|
|
|
442 |
static inline __attribute__((always_inline))
|
|
|
443 |
void badPinCheck(uint8_t pin) {
|
|
|
444 |
if (!__builtin_constant_p(pin) || pin >= digitalPinCount) {
|
|
|
445 |
badPinNumber();
|
|
|
446 |
}
|
|
|
447 |
}
|
|
|
448 |
//------------------------------------------------------------------------------
|
|
|
449 |
/** fast write helper
|
|
|
450 |
* @param[in] address I/O register address
|
|
|
451 |
* @param[in] bit bit number to write
|
|
|
452 |
* @param[in] level value for bit
|
|
|
453 |
*/
|
|
|
454 |
static inline __attribute__((always_inline))
|
|
|
455 |
void fastBitWriteSafe(volatile uint8_t* address, uint8_t bit, bool level) {
|
|
|
456 |
uint8_t oldSREG;
|
|
|
457 |
if (address > (uint8_t*)0x5F) {
|
|
|
458 |
oldSREG = SREG;
|
|
|
459 |
cli();
|
|
|
460 |
}
|
|
|
461 |
if (level) {
|
|
|
462 |
*address |= 1 << bit;
|
|
|
463 |
} else {
|
|
|
464 |
*address &= ~(1 << bit);
|
|
|
465 |
}
|
|
|
466 |
if (address > (uint8_t*)0x5F) {
|
|
|
467 |
SREG = oldSREG;
|
|
|
468 |
}
|
|
|
469 |
}
|
|
|
470 |
//------------------------------------------------------------------------------
|
|
|
471 |
/** read pin value
|
|
|
472 |
* @param[in] pin Arduino pin number
|
|
|
473 |
* @return value read
|
|
|
474 |
*/
|
|
|
475 |
static inline __attribute__((always_inline))
|
|
|
476 |
bool fastDigitalRead(uint8_t pin) {
|
|
|
477 |
badPinCheck(pin);
|
|
|
478 |
return (*pinMap[pin].pin >> pinMap[pin].bit) & 1;
|
|
|
479 |
}
|
|
|
480 |
//------------------------------------------------------------------------------
|
|
|
481 |
/** toggle a pin
|
|
|
482 |
* @param[in] pin Arduino pin number
|
|
|
483 |
*
|
|
|
484 |
* If the pin is in output mode toggle the pin level.
|
|
|
485 |
* If the pin is in input mode toggle the state of the 20K pullup.
|
|
|
486 |
*/
|
|
|
487 |
static inline __attribute__((always_inline))
|
|
|
488 |
void fastDigitalToggle(uint8_t pin) {
|
|
|
489 |
badPinCheck(pin);
|
|
|
490 |
if (pinMap[pin].pin > (uint8_t*)0x5F) {
|
|
|
491 |
// must write bit to high address port
|
|
|
492 |
*pinMap[pin].pin = 1 << pinMap[pin].bit;
|
|
|
493 |
} else {
|
|
|
494 |
// will compile to sbi and PIN register will not be read.
|
|
|
495 |
*pinMap[pin].pin |= 1 << pinMap[pin].bit;
|
|
|
496 |
}
|
|
|
497 |
}
|
|
|
498 |
//------------------------------------------------------------------------------
|
|
|
499 |
/** Set pin value
|
|
|
500 |
* @param[in] pin Arduino pin number
|
|
|
501 |
* @param[in] level value to write
|
|
|
502 |
*/
|
|
|
503 |
static inline __attribute__((always_inline))
|
|
|
504 |
void fastDigitalWrite(uint8_t pin, bool level) {
|
|
|
505 |
badPinCheck(pin);
|
|
|
506 |
fastBitWriteSafe(pinMap[pin].port, pinMap[pin].bit, level);
|
|
|
507 |
}
|
|
|
508 |
//------------------------------------------------------------------------------
|
|
|
509 |
/** set pin mode
|
|
|
510 |
* @param[in] pin Arduino pin number
|
|
|
511 |
* @param[in] mode if true set output mode else input mode
|
|
|
512 |
*
|
|
|
513 |
* fastPinMode does not enable or disable the 20K pullup for input mode.
|
|
|
514 |
*/
|
|
|
515 |
static inline __attribute__((always_inline))
|
|
|
516 |
void fastPinMode(uint8_t pin, bool mode) {
|
|
|
517 |
badPinCheck(pin);
|
|
|
518 |
fastBitWriteSafe(pinMap[pin].ddr, pinMap[pin].bit, mode);
|
|
|
519 |
}
|
|
|
520 |
|
|
|
521 |
#endif // __arm__
|
|
|
522 |
//------------------------------------------------------------------------------
|
|
|
523 |
/** set pin configuration
|
|
|
524 |
* @param[in] pin Arduino pin number
|
|
|
525 |
* @param[in] mode If true set output mode else input mode
|
|
|
526 |
* @param[in] level If mode is output, set level high/low.
|
|
|
527 |
* If mode is input, enable or disable the pin's 20K pullup.
|
|
|
528 |
*/
|
|
|
529 |
static inline __attribute__((always_inline))
|
|
|
530 |
void fastPinConfig(uint8_t pin, bool mode, bool level) {
|
|
|
531 |
fastPinMode(pin, mode);
|
|
|
532 |
fastDigitalWrite(pin, level);
|
|
|
533 |
}
|
|
|
534 |
//==============================================================================
|
|
|
535 |
/**
|
|
|
536 |
* @class DigitalPin
|
|
|
537 |
* @brief Fast digital port I/O
|
|
|
538 |
*/
|
|
|
539 |
template<uint8_t PinNumber>
|
|
|
540 |
class DigitalPin {
|
|
|
541 |
public:
|
|
|
542 |
//----------------------------------------------------------------------------
|
|
|
543 |
/** Constructor */
|
|
|
544 |
DigitalPin() {}
|
|
|
545 |
//----------------------------------------------------------------------------
|
|
|
546 |
/** Constructor
|
|
|
547 |
* @param[in] pinMode if true set output mode else input mode.
|
|
|
548 |
*/
|
|
|
549 |
explicit DigitalPin(bool pinMode) {
|
|
|
550 |
mode(pinMode);
|
|
|
551 |
}
|
|
|
552 |
//----------------------------------------------------------------------------
|
|
|
553 |
/** Constructor
|
|
|
554 |
* @param[in] mode If true set output mode else input mode
|
|
|
555 |
* @param[in] level If mode is output, set level high/low.
|
|
|
556 |
* If mode is input, enable or disable the pin's 20K pullup.
|
|
|
557 |
*/
|
|
|
558 |
DigitalPin(bool mode, bool level) {
|
|
|
559 |
config(mode, level);
|
|
|
560 |
}
|
|
|
561 |
//----------------------------------------------------------------------------
|
|
|
562 |
/** Asignment operator
|
|
|
563 |
* @param[in] value If true set the pin's level high else set the
|
|
|
564 |
* pin's level low.
|
|
|
565 |
*
|
|
|
566 |
* @return This DigitalPin instance.
|
|
|
567 |
*/
|
|
|
568 |
inline DigitalPin & operator = (bool value) __attribute__((always_inline)) {
|
|
|
569 |
write(value);
|
|
|
570 |
return *this;
|
|
|
571 |
}
|
|
|
572 |
//----------------------------------------------------------------------------
|
|
|
573 |
/** Parenthesis operator
|
|
|
574 |
* @return Pin's level
|
|
|
575 |
*/
|
|
|
576 |
inline operator bool () const __attribute__((always_inline)) {
|
|
|
577 |
return read();
|
|
|
578 |
}
|
|
|
579 |
//----------------------------------------------------------------------------
|
|
|
580 |
/** set pin configuration
|
|
|
581 |
* @param[in] mode If true set output mode else input mode
|
|
|
582 |
* @param[in] level If mode is output, set level high/low.
|
|
|
583 |
* If mode is input, enable or disable the pin's 20K pullup.
|
|
|
584 |
*/
|
|
|
585 |
inline __attribute__((always_inline))
|
|
|
586 |
void config(bool mode, bool level) {
|
|
|
587 |
fastPinConfig(PinNumber, mode, level);
|
|
|
588 |
}
|
|
|
589 |
//----------------------------------------------------------------------------
|
|
|
590 |
/**
|
|
|
591 |
* Set pin level high if output mode or enable 20K pullup if input mode.
|
|
|
592 |
*/
|
|
|
593 |
inline __attribute__((always_inline))
|
|
|
594 |
void high() {write(true);}
|
|
|
595 |
//----------------------------------------------------------------------------
|
|
|
596 |
/**
|
|
|
597 |
* Set pin level low if output mode or disable 20K pullup if input mode.
|
|
|
598 |
*/
|
|
|
599 |
inline __attribute__((always_inline))
|
|
|
600 |
void low() {write(false);}
|
|
|
601 |
//----------------------------------------------------------------------------
|
|
|
602 |
/**
|
|
|
603 |
* Set pin mode
|
|
|
604 |
* @param[in] pinMode if true set output mode else input mode.
|
|
|
605 |
*
|
|
|
606 |
* mode() does not enable or disable the 20K pullup for input mode.
|
|
|
607 |
*/
|
|
|
608 |
inline __attribute__((always_inline))
|
|
|
609 |
void mode(bool pinMode) {
|
|
|
610 |
fastPinMode(PinNumber, pinMode);
|
|
|
611 |
}
|
|
|
612 |
//----------------------------------------------------------------------------
|
|
|
613 |
/** @return Pin's level */
|
|
|
614 |
inline __attribute__((always_inline))
|
|
|
615 |
bool read() const {
|
|
|
616 |
return fastDigitalRead(PinNumber);
|
|
|
617 |
}
|
|
|
618 |
//----------------------------------------------------------------------------
|
|
|
619 |
/** toggle a pin
|
|
|
620 |
*
|
|
|
621 |
* If the pin is in output mode toggle the pin's level.
|
|
|
622 |
* If the pin is in input mode toggle the state of the 20K pullup.
|
|
|
623 |
*/
|
|
|
624 |
inline __attribute__((always_inline))
|
|
|
625 |
void toggle() {
|
|
|
626 |
fastDigitalToggle(PinNumber);
|
|
|
627 |
}
|
|
|
628 |
//----------------------------------------------------------------------------
|
|
|
629 |
/** Write the pin's level.
|
|
|
630 |
* @param[in] value If true set the pin's level high else set the
|
|
|
631 |
* pin's level low.
|
|
|
632 |
*/
|
|
|
633 |
inline __attribute__((always_inline))
|
|
|
634 |
void write(bool value) {
|
|
|
635 |
fastDigitalWrite(PinNumber, value);
|
|
|
636 |
}
|
|
|
637 |
};
|
|
|
638 |
|
|
|
639 |
//------------------------------------------------------------------------------
|
|
|
640 |
/** Nop for timing. */
|
|
|
641 |
#define nop asm volatile ("nop\n\t")
|
|
|
642 |
//------------------------------------------------------------------------------
|
|
|
643 |
/** Pin Mode for MISO is input.*/
|
|
|
644 |
const bool MISO_MODE = false;
|
|
|
645 |
/** Pullups disabled for MISO are disabled. */
|
|
|
646 |
const bool MISO_LEVEL = false;
|
|
|
647 |
/** Pin Mode for MOSI is output.*/
|
|
|
648 |
const bool MOSI_MODE = true;
|
|
|
649 |
/** Pin Mode for SCK is output. */
|
|
|
650 |
const bool SCK_MODE = true;
|
|
|
651 |
//------------------------------------------------------------------------------
|
|
|
652 |
/**
|
|
|
653 |
* @class SoftSPI
|
|
|
654 |
* @brief Fast software SPI.
|
|
|
655 |
*/
|
|
|
656 |
template<uint8_t MisoPin, uint8_t MosiPin, uint8_t SckPin, uint8_t Mode = 0>
|
|
|
657 |
class SoftSPI {
|
|
|
658 |
public:
|
|
|
659 |
//----------------------------------------------------------------------------
|
|
|
660 |
/** Initialize SoftSPI pins. */
|
|
|
661 |
void begin() {
|
|
|
662 |
fastPinConfig(MisoPin, MISO_MODE, MISO_LEVEL);
|
|
|
663 |
fastPinConfig(MosiPin, MOSI_MODE, !MODE_CPHA(Mode));
|
|
|
664 |
fastPinConfig(SckPin, SCK_MODE, MODE_CPOL(Mode));
|
|
|
665 |
}
|
|
|
666 |
//----------------------------------------------------------------------------
|
|
|
667 |
/** Soft SPI receive byte.
|
|
|
668 |
* @return Data byte received.
|
|
|
669 |
*/
|
|
|
670 |
inline __attribute__((always_inline))
|
|
|
671 |
uint8_t receive() {
|
|
|
672 |
uint8_t data = 0;
|
|
|
673 |
receiveBit(7, &data);
|
|
|
674 |
receiveBit(6, &data);
|
|
|
675 |
receiveBit(5, &data);
|
|
|
676 |
receiveBit(4, &data);
|
|
|
677 |
receiveBit(3, &data);
|
|
|
678 |
receiveBit(2, &data);
|
|
|
679 |
receiveBit(1, &data);
|
|
|
680 |
receiveBit(0, &data);
|
|
|
681 |
return data;
|
|
|
682 |
}
|
|
|
683 |
//----------------------------------------------------------------------------
|
|
|
684 |
/** Soft SPI send byte.
|
|
|
685 |
* @param[in] data Data byte to send.
|
|
|
686 |
*/
|
|
|
687 |
inline __attribute__((always_inline))
|
|
|
688 |
void send(uint8_t data) {
|
|
|
689 |
sendBit(7, data);
|
|
|
690 |
sendBit(6, data);
|
|
|
691 |
sendBit(5, data);
|
|
|
692 |
sendBit(4, data);
|
|
|
693 |
sendBit(3, data);
|
|
|
694 |
sendBit(2, data);
|
|
|
695 |
sendBit(1, data);
|
|
|
696 |
sendBit(0, data);
|
|
|
697 |
}
|
|
|
698 |
//----------------------------------------------------------------------------
|
|
|
699 |
/** Soft SPI transfer byte.
|
|
|
700 |
* @param[in] txData Data byte to send.
|
|
|
701 |
* @return Data byte received.
|
|
|
702 |
*/
|
|
|
703 |
inline __attribute__((always_inline))
|
|
|
704 |
uint8_t transfer(uint8_t txData) {
|
|
|
705 |
uint8_t rxData = 0;
|
|
|
706 |
transferBit(7, &rxData, txData);
|
|
|
707 |
transferBit(6, &rxData, txData);
|
|
|
708 |
transferBit(5, &rxData, txData);
|
|
|
709 |
transferBit(4, &rxData, txData);
|
|
|
710 |
transferBit(3, &rxData, txData);
|
|
|
711 |
transferBit(2, &rxData, txData);
|
|
|
712 |
transferBit(1, &rxData, txData);
|
|
|
713 |
transferBit(0, &rxData, txData);
|
|
|
714 |
return rxData;
|
|
|
715 |
}
|
|
|
716 |
|
|
|
717 |
private:
|
|
|
718 |
//----------------------------------------------------------------------------
|
|
|
719 |
inline __attribute__((always_inline))
|
|
|
720 |
bool MODE_CPHA(uint8_t mode) {return (mode & 1) != 0;}
|
|
|
721 |
inline __attribute__((always_inline))
|
|
|
722 |
bool MODE_CPOL(uint8_t mode) {return (mode & 2) != 0;}
|
|
|
723 |
inline __attribute__((always_inline))
|
|
|
724 |
void receiveBit(uint8_t bit, uint8_t* data) {
|
|
|
725 |
if (MODE_CPHA(Mode)) {
|
|
|
726 |
fastDigitalWrite(SckPin, !MODE_CPOL(Mode));
|
|
|
727 |
}
|
|
|
728 |
nop;
|
|
|
729 |
nop;
|
|
|
730 |
fastDigitalWrite(SckPin,
|
|
|
731 |
MODE_CPHA(Mode) ? MODE_CPOL(Mode) : !MODE_CPOL(Mode));
|
|
|
732 |
if (fastDigitalRead(MisoPin)) *data |= 1 << bit;
|
|
|
733 |
if (!MODE_CPHA(Mode)) {
|
|
|
734 |
fastDigitalWrite(SckPin, MODE_CPOL(Mode));
|
|
|
735 |
}
|
|
|
736 |
}
|
|
|
737 |
//----------------------------------------------------------------------------
|
|
|
738 |
inline __attribute__((always_inline))
|
|
|
739 |
void sendBit(uint8_t bit, uint8_t data) {
|
|
|
740 |
if (MODE_CPHA(Mode)) {
|
|
|
741 |
fastDigitalWrite(SckPin, !MODE_CPOL(Mode));
|
|
|
742 |
}
|
|
|
743 |
fastDigitalWrite(MosiPin, data & (1 << bit));
|
|
|
744 |
fastDigitalWrite(SckPin,
|
|
|
745 |
MODE_CPHA(Mode) ? MODE_CPOL(Mode) : !MODE_CPOL(Mode));
|
|
|
746 |
nop;
|
|
|
747 |
nop;
|
|
|
748 |
if (!MODE_CPHA(Mode)) {
|
|
|
749 |
fastDigitalWrite(SckPin, MODE_CPOL(Mode));
|
|
|
750 |
}
|
|
|
751 |
}
|
|
|
752 |
//----------------------------------------------------------------------------
|
|
|
753 |
inline __attribute__((always_inline))
|
|
|
754 |
void transferBit(uint8_t bit, uint8_t* rxData, uint8_t txData) {
|
|
|
755 |
if (MODE_CPHA(Mode)) {
|
|
|
756 |
fastDigitalWrite(SckPin, !MODE_CPOL(Mode));
|
|
|
757 |
}
|
|
|
758 |
fastDigitalWrite(MosiPin, txData & (1 << bit));
|
|
|
759 |
fastDigitalWrite(SckPin,
|
|
|
760 |
MODE_CPHA(Mode) ? MODE_CPOL(Mode) : !MODE_CPOL(Mode));
|
|
|
761 |
if (fastDigitalRead(MisoPin)) *rxData |= 1 << bit;
|
|
|
762 |
if (!MODE_CPHA(Mode)) {
|
|
|
763 |
fastDigitalWrite(SckPin, MODE_CPOL(Mode));
|
|
|
764 |
}
|
|
|
765 |
}
|
|
|
766 |
//----------------------------------------------------------------------------
|
|
|
767 |
};
|
|
|
768 |
|
|
|
769 |
|