From 44cdebb8f1a1f0ebd00dd0fadb0bab4b3807b417 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Pawe=C5=82=20Stawicki?= Date: Sun, 8 Jan 2017 17:08:50 +0100 Subject: [PATCH] Add software spi support for max6675 --- Marlin/softspi.h | 770 +++++++++++++++++++++++++++++++++++++++++ Marlin/spi.h | 68 ++++ Marlin/temperature.cpp | 20 +- 3 files changed, 853 insertions(+), 5 deletions(-) create mode 100644 Marlin/softspi.h create mode 100644 Marlin/spi.h diff --git a/Marlin/softspi.h b/Marlin/softspi.h new file mode 100644 index 000000000..ef529d817 --- /dev/null +++ b/Marlin/softspi.h @@ -0,0 +1,770 @@ +//https://github.com/niteris/ArduinoSoftSpi + +#include +#ifdef __arm__ +#ifdef CORE_TEENSY +//------------------------------------------------------------------------------ +/** read pin value + * @param[in] pin Arduino pin number + * @return value read + */ +static inline __attribute__((always_inline)) +bool fastDigitalRead(uint8_t pin) { + return *portInputRegister(pin); +} +//------------------------------------------------------------------------------ +/** Set pin value + * @param[in] pin Arduino pin number + * @param[in] level value to write + */ +static inline __attribute__((always_inline)) +void fastDigitalWrite(uint8_t pin, bool value) { + if (value) { + *portSetRegister(pin) = 1; + } else { + *portClearRegister(pin) = 1; + } +} +#else // CORE_TEENSY +//------------------------------------------------------------------------------ +/** read pin value + * @param[in] pin Arduino pin number + * @return value read + */ +static inline __attribute__((always_inline)) +bool fastDigitalRead(uint8_t pin){ + return g_APinDescription[pin].pPort->PIO_PDSR & g_APinDescription[pin].ulPin; +} +//------------------------------------------------------------------------------ +/** Set pin value + * @param[in] pin Arduino pin number + * @param[in] level value to write + */ +static inline __attribute__((always_inline)) +void fastDigitalWrite(uint8_t pin, bool value){ + if(value) { + g_APinDescription[pin].pPort->PIO_SODR = g_APinDescription[pin].ulPin; + } else { + g_APinDescription[pin].pPort->PIO_CODR = g_APinDescription[pin].ulPin; + } +} +#endif // CORE_TEENSY +//------------------------------------------------------------------------------ +inline void fastDigitalToggle(uint8_t pin) { + fastDigitalWrite(pin, !fastDigitalRead(pin)); + } +//------------------------------------------------------------------------------ +inline void fastPinMode(uint8_t pin, bool mode) {pinMode(pin, mode);} +#else // __arm__ +#include +#include +//------------------------------------------------------------------------------ +/** + * @class pin_map_t + * @brief struct for mapping digital pins + */ +struct pin_map_t { + volatile uint8_t* ddr; /**< address of DDR for this pin */ + volatile uint8_t* pin; /**< address of PIN for this pin */ + volatile uint8_t* port; /**< address of PORT for this pin */ + uint8_t bit; /**< bit number for this pin */ +}; +//------------------------------------------------------------------------------ +#if defined(__AVR_ATmega168__)\ +||defined(__AVR_ATmega168P__)\ +||defined(__AVR_ATmega328P__) +// 168 and 328 Arduinos +const static pin_map_t pinMap[] = { + {&DDRD, &PIND, &PORTD, 0}, // D0 0 + {&DDRD, &PIND, &PORTD, 1}, // D1 1 + {&DDRD, &PIND, &PORTD, 2}, // D2 2 + {&DDRD, &PIND, &PORTD, 3}, // D3 3 + {&DDRD, &PIND, &PORTD, 4}, // D4 4 + {&DDRD, &PIND, &PORTD, 5}, // D5 5 + {&DDRD, &PIND, &PORTD, 6}, // D6 6 + {&DDRD, &PIND, &PORTD, 7}, // D7 7 + {&DDRB, &PINB, &PORTB, 0}, // B0 8 + {&DDRB, &PINB, &PORTB, 1}, // B1 9 + {&DDRB, &PINB, &PORTB, 2}, // B2 10 + {&DDRB, &PINB, &PORTB, 3}, // B3 11 + {&DDRB, &PINB, &PORTB, 4}, // B4 12 + {&DDRB, &PINB, &PORTB, 5}, // B5 13 + {&DDRC, &PINC, &PORTC, 0}, // C0 14 + {&DDRC, &PINC, &PORTC, 1}, // C1 15 + {&DDRC, &PINC, &PORTC, 2}, // C2 16 + {&DDRC, &PINC, &PORTC, 3}, // C3 17 + {&DDRC, &PINC, &PORTC, 4}, // C4 18 + {&DDRC, &PINC, &PORTC, 5} // C5 19 +}; +//------------------------------------------------------------------------------ +#elif defined(__AVR_ATmega1280__)\ +|| defined(__AVR_ATmega2560__) +// Mega +static const pin_map_t pinMap[] = { + {&DDRE, &PINE, &PORTE, 0}, // E0 0 + {&DDRE, &PINE, &PORTE, 1}, // E1 1 + {&DDRE, &PINE, &PORTE, 4}, // E4 2 + {&DDRE, &PINE, &PORTE, 5}, // E5 3 + {&DDRG, &PING, &PORTG, 5}, // G5 4 + {&DDRE, &PINE, &PORTE, 3}, // E3 5 + {&DDRH, &PINH, &PORTH, 3}, // H3 6 + {&DDRH, &PINH, &PORTH, 4}, // H4 7 + {&DDRH, &PINH, &PORTH, 5}, // H5 8 + {&DDRH, &PINH, &PORTH, 6}, // H6 9 + {&DDRB, &PINB, &PORTB, 4}, // B4 10 + {&DDRB, &PINB, &PORTB, 5}, // B5 11 + {&DDRB, &PINB, &PORTB, 6}, // B6 12 + {&DDRB, &PINB, &PORTB, 7}, // B7 13 + {&DDRJ, &PINJ, &PORTJ, 1}, // J1 14 + {&DDRJ, &PINJ, &PORTJ, 0}, // J0 15 + {&DDRH, &PINH, &PORTH, 1}, // H1 16 + {&DDRH, &PINH, &PORTH, 0}, // H0 17 + {&DDRD, &PIND, &PORTD, 3}, // D3 18 + {&DDRD, &PIND, &PORTD, 2}, // D2 19 + {&DDRD, &PIND, &PORTD, 1}, // D1 20 + {&DDRD, &PIND, &PORTD, 0}, // D0 21 + {&DDRA, &PINA, &PORTA, 0}, // A0 22 + {&DDRA, &PINA, &PORTA, 1}, // A1 23 + {&DDRA, &PINA, &PORTA, 2}, // A2 24 + {&DDRA, &PINA, &PORTA, 3}, // A3 25 + {&DDRA, &PINA, &PORTA, 4}, // A4 26 + {&DDRA, &PINA, &PORTA, 5}, // A5 27 + {&DDRA, &PINA, &PORTA, 6}, // A6 28 + {&DDRA, &PINA, &PORTA, 7}, // A7 29 + {&DDRC, &PINC, &PORTC, 7}, // C7 30 + {&DDRC, &PINC, &PORTC, 6}, // C6 31 + {&DDRC, &PINC, &PORTC, 5}, // C5 32 + {&DDRC, &PINC, &PORTC, 4}, // C4 33 + {&DDRC, &PINC, &PORTC, 3}, // C3 34 + {&DDRC, &PINC, &PORTC, 2}, // C2 35 + {&DDRC, &PINC, &PORTC, 1}, // C1 36 + {&DDRC, &PINC, &PORTC, 0}, // C0 37 + {&DDRD, &PIND, &PORTD, 7}, // D7 38 + {&DDRG, &PING, &PORTG, 2}, // G2 39 + {&DDRG, &PING, &PORTG, 1}, // G1 40 + {&DDRG, &PING, &PORTG, 0}, // G0 41 + {&DDRL, &PINL, &PORTL, 7}, // L7 42 + {&DDRL, &PINL, &PORTL, 6}, // L6 43 + {&DDRL, &PINL, &PORTL, 5}, // L5 44 + {&DDRL, &PINL, &PORTL, 4}, // L4 45 + {&DDRL, &PINL, &PORTL, 3}, // L3 46 + {&DDRL, &PINL, &PORTL, 2}, // L2 47 + {&DDRL, &PINL, &PORTL, 1}, // L1 48 + {&DDRL, &PINL, &PORTL, 0}, // L0 49 + {&DDRB, &PINB, &PORTB, 3}, // B3 50 + {&DDRB, &PINB, &PORTB, 2}, // B2 51 + {&DDRB, &PINB, &PORTB, 1}, // B1 52 + {&DDRB, &PINB, &PORTB, 0}, // B0 53 + {&DDRF, &PINF, &PORTF, 0}, // F0 54 + {&DDRF, &PINF, &PORTF, 1}, // F1 55 + {&DDRF, &PINF, &PORTF, 2}, // F2 56 + {&DDRF, &PINF, &PORTF, 3}, // F3 57 + {&DDRF, &PINF, &PORTF, 4}, // F4 58 + {&DDRF, &PINF, &PORTF, 5}, // F5 59 + {&DDRF, &PINF, &PORTF, 6}, // F6 60 + {&DDRF, &PINF, &PORTF, 7}, // F7 61 + {&DDRK, &PINK, &PORTK, 0}, // K0 62 + {&DDRK, &PINK, &PORTK, 1}, // K1 63 + {&DDRK, &PINK, &PORTK, 2}, // K2 64 + {&DDRK, &PINK, &PORTK, 3}, // K3 65 + {&DDRK, &PINK, &PORTK, 4}, // K4 66 + {&DDRK, &PINK, &PORTK, 5}, // K5 67 + {&DDRK, &PINK, &PORTK, 6}, // K6 68 + {&DDRK, &PINK, &PORTK, 7}, // K7 69 + +//pins_MIGHTYBOARD_REVE.h + {&DDRG, &PING, &PORTG, 4}, // G4 70 + {&DDRG, &PING, &PORTG, 3}, // G3 71 + {&DDRJ, &PINJ, &PORTJ, 2}, // J2 72 + {&DDRJ, &PINJ, &PORTJ, 3}, // J3 73 + {&DDRJ, &PINJ, &PORTJ, 7}, // J7 74 + {&DDRJ, &PINJ, &PORTJ, 4}, // J4 75 + {&DDRJ, &PINJ, &PORTJ, 5}, // J5 76 + {&DDRJ, &PINJ, &PORTJ, 6}, // J6 77 + {&DDRE, &PINE, &PORTE, 2}, // E2 78 + {&DDRE, &PINE, &PORTE, 6} // E6 79 + +}; +//------------------------------------------------------------------------------ +#elif defined(__AVR_ATmega1284P__)\ +|| defined(__AVR_ATmega1284__)\ +|| defined(__AVR_ATmega644P__)\ +|| defined(__AVR_ATmega644__)\ +|| defined(__AVR_ATmega64__)\ +|| defined(__AVR_ATmega32__)\ +|| defined(__AVR_ATmega324__)\ +|| defined(__AVR_ATmega16__) + +#ifdef defined(VARIANT_MIGHTY) +// Mighty Layout +static const pin_map_t pinMap[] = { + {&DDRB, &PINB, &PORTB, 0}, // B0 0 + {&DDRB, &PINB, &PORTB, 1}, // B1 1 + {&DDRB, &PINB, &PORTB, 2}, // B2 2 + {&DDRB, &PINB, &PORTB, 3}, // B3 3 + {&DDRB, &PINB, &PORTB, 4}, // B4 4 + {&DDRB, &PINB, &PORTB, 5}, // B5 5 + {&DDRB, &PINB, &PORTB, 6}, // B6 6 + {&DDRB, &PINB, &PORTB, 7}, // B7 7 + {&DDRD, &PIND, &PORTD, 0}, // D0 8 + {&DDRD, &PIND, &PORTD, 1}, // D1 9 + {&DDRD, &PIND, &PORTD, 2}, // D2 10 + {&DDRD, &PIND, &PORTD, 3}, // D3 11 + {&DDRD, &PIND, &PORTD, 4}, // D4 12 + {&DDRD, &PIND, &PORTD, 5}, // D5 13 + {&DDRD, &PIND, &PORTD, 6}, // D6 14 + {&DDRD, &PIND, &PORTD, 7}, // D7 15 + {&DDRC, &PINC, &PORTC, 0}, // C0 16 + {&DDRC, &PINC, &PORTC, 1}, // C1 17 + {&DDRC, &PINC, &PORTC, 2}, // C2 18 + {&DDRC, &PINC, &PORTC, 3}, // C3 19 + {&DDRC, &PINC, &PORTC, 4}, // C4 20 + {&DDRC, &PINC, &PORTC, 5}, // C5 21 + {&DDRC, &PINC, &PORTC, 6}, // C6 22 + {&DDRC, &PINC, &PORTC, 7}, // C7 23 + {&DDRA, &PINA, &PORTA, 0}, // A0 24 + {&DDRA, &PINA, &PORTA, 1}, // A1 25 + {&DDRA, &PINA, &PORTA, 2}, // A2 26 + {&DDRA, &PINA, &PORTA, 3}, // A3 27 + {&DDRA, &PINA, &PORTA, 4}, // A4 28 + {&DDRA, &PINA, &PORTA, 5}, // A5 29 + {&DDRA, &PINA, &PORTA, 6}, // A6 30 + {&DDRA, &PINA, &PORTA, 7} // A7 31 +}; +#elif defined(VARIANT_BOBUINO) +// Bobuino Layout +static const pin_map_t pinMap[] = { + {&DDRD, &PIND, &PORTD, 0}, // D0 0 + {&DDRD, &PIND, &PORTD, 1}, // D1 1 + {&DDRD, &PIND, &PORTD, 2}, // D2 2 + {&DDRD, &PIND, &PORTD, 3}, // D3 3 + {&DDRB, &PINB, &PORTB, 0}, // B0 4 + {&DDRB, &PINB, &PORTB, 1}, // B1 5 + {&DDRB, &PINB, &PORTB, 2}, // B2 6 + {&DDRB, &PINB, &PORTB, 3}, // B3 7 + {&DDRD, &PIND, &PORTD, 5}, // D5 8 + {&DDRD, &PIND, &PORTD, 6}, // D6 9 + {&DDRB, &PINB, &PORTB, 4}, // B4 10 + {&DDRB, &PINB, &PORTB, 5}, // B5 11 + {&DDRB, &PINB, &PORTB, 6}, // B6 12 + {&DDRB, &PINB, &PORTB, 7}, // B7 13 + {&DDRA, &PINA, &PORTA, 7}, // A7 14 + {&DDRA, &PINA, &PORTA, 6}, // A6 15 + {&DDRA, &PINA, &PORTA, 5}, // A5 16 + {&DDRA, &PINA, &PORTA, 4}, // A4 17 + {&DDRA, &PINA, &PORTA, 3}, // A3 18 + {&DDRA, &PINA, &PORTA, 2}, // A2 19 + {&DDRA, &PINA, &PORTA, 1}, // A1 20 + {&DDRA, &PINA, &PORTA, 0}, // A0 21 + {&DDRC, &PINC, &PORTC, 0}, // C0 22 + {&DDRC, &PINC, &PORTC, 1}, // C1 23 + {&DDRC, &PINC, &PORTC, 2}, // C2 24 + {&DDRC, &PINC, &PORTC, 3}, // C3 25 + {&DDRC, &PINC, &PORTC, 4}, // C4 26 + {&DDRC, &PINC, &PORTC, 5}, // C5 27 + {&DDRC, &PINC, &PORTC, 6}, // C6 28 + {&DDRC, &PINC, &PORTC, 7}, // C7 29 + {&DDRD, &PIND, &PORTD, 4}, // D4 30 + {&DDRD, &PIND, &PORTD, 7} // D7 31 +}; +#elif defined(VARIANT_STANDARD) +// Standard Layout +static const pin_map_t pinMap[] = { + {&DDRB, &PINB, &PORTB, 0}, // B0 0 + {&DDRB, &PINB, &PORTB, 1}, // B1 1 + {&DDRB, &PINB, &PORTB, 2}, // B2 2 + {&DDRB, &PINB, &PORTB, 3}, // B3 3 + {&DDRB, &PINB, &PORTB, 4}, // B4 4 + {&DDRB, &PINB, &PORTB, 5}, // B5 5 + {&DDRB, &PINB, &PORTB, 6}, // B6 6 + {&DDRB, &PINB, &PORTB, 7}, // B7 7 + {&DDRD, &PIND, &PORTD, 0}, // D0 8 + {&DDRD, &PIND, &PORTD, 1}, // D1 9 + {&DDRD, &PIND, &PORTD, 2}, // D2 10 + {&DDRD, &PIND, &PORTD, 3}, // D3 11 + {&DDRD, &PIND, &PORTD, 4}, // D4 12 + {&DDRD, &PIND, &PORTD, 5}, // D5 13 + {&DDRD, &PIND, &PORTD, 6}, // D6 14 + {&DDRD, &PIND, &PORTD, 7}, // D7 15 + {&DDRC, &PINC, &PORTC, 0}, // C0 16 + {&DDRC, &PINC, &PORTC, 1}, // C1 17 + {&DDRC, &PINC, &PORTC, 2}, // C2 18 + {&DDRC, &PINC, &PORTC, 3}, // C3 19 + {&DDRC, &PINC, &PORTC, 4}, // C4 20 + {&DDRC, &PINC, &PORTC, 5}, // C5 21 + {&DDRC, &PINC, &PORTC, 6}, // C6 22 + {&DDRC, &PINC, &PORTC, 7}, // C7 23 + {&DDRA, &PINA, &PORTA, 7}, // A7 24 + {&DDRA, &PINA, &PORTA, 6}, // A6 25 + {&DDRA, &PINA, &PORTA, 5}, // A5 26 + {&DDRA, &PINA, &PORTA, 4}, // A4 27 + {&DDRA, &PINA, &PORTA, 3}, // A3 28 + {&DDRA, &PINA, &PORTA, 2}, // A2 29 + {&DDRA, &PINA, &PORTA, 1}, // A1 30 + {&DDRA, &PINA, &PORTA, 0} // A0 31 +}; +#else // VARIANT_MIGHTY +#error Undefined variant 1284, 644, 324, 64, 32 +#endif // VARIANT_MIGHTY +//------------------------------------------------------------------------------ +#elif defined(__AVR_ATmega32U4__) +#ifdef CORE_TEENSY +// Teensy 2.0 +static const pin_map_t pinMap[] = { + {&DDRB, &PINB, &PORTB, 0}, // B0 0 + {&DDRB, &PINB, &PORTB, 1}, // B1 1 + {&DDRB, &PINB, &PORTB, 2}, // B2 2 + {&DDRB, &PINB, &PORTB, 3}, // B3 3 + {&DDRB, &PINB, &PORTB, 7}, // B7 4 + {&DDRD, &PIND, &PORTD, 0}, // D0 5 + {&DDRD, &PIND, &PORTD, 1}, // D1 6 + {&DDRD, &PIND, &PORTD, 2}, // D2 7 + {&DDRD, &PIND, &PORTD, 3}, // D3 8 + {&DDRC, &PINC, &PORTC, 6}, // C6 9 + {&DDRC, &PINC, &PORTC, 7}, // C7 10 + {&DDRD, &PIND, &PORTD, 6}, // D6 11 + {&DDRD, &PIND, &PORTD, 7}, // D7 12 + {&DDRB, &PINB, &PORTB, 4}, // B4 13 + {&DDRB, &PINB, &PORTB, 5}, // B5 14 + {&DDRB, &PINB, &PORTB, 6}, // B6 15 + {&DDRF, &PINF, &PORTF, 7}, // F7 16 + {&DDRF, &PINF, &PORTF, 6}, // F6 17 + {&DDRF, &PINF, &PORTF, 5}, // F5 18 + {&DDRF, &PINF, &PORTF, 4}, // F4 19 + {&DDRF, &PINF, &PORTF, 1}, // F1 20 + {&DDRF, &PINF, &PORTF, 0}, // F0 21 + {&DDRD, &PIND, &PORTD, 4}, // D4 22 + {&DDRD, &PIND, &PORTD, 5}, // D5 23 + {&DDRE, &PINE, &PORTE, 6} // E6 24 +}; +//------------------------------------------------------------------------------ +#else // CORE_TEENSY +// Leonardo +static const pin_map_t pinMap[] = { + {&DDRD, &PIND, &PORTD, 2}, // D2 0 + {&DDRD, &PIND, &PORTD, 3}, // D3 1 + {&DDRD, &PIND, &PORTD, 1}, // D1 2 + {&DDRD, &PIND, &PORTD, 0}, // D0 3 + {&DDRD, &PIND, &PORTD, 4}, // D4 4 + {&DDRC, &PINC, &PORTC, 6}, // C6 5 + {&DDRD, &PIND, &PORTD, 7}, // D7 6 + {&DDRE, &PINE, &PORTE, 6}, // E6 7 + {&DDRB, &PINB, &PORTB, 4}, // B4 8 + {&DDRB, &PINB, &PORTB, 5}, // B5 9 + {&DDRB, &PINB, &PORTB, 6}, // B6 10 + {&DDRB, &PINB, &PORTB, 7}, // B7 11 + {&DDRD, &PIND, &PORTD, 6}, // D6 12 + {&DDRC, &PINC, &PORTC, 7}, // C7 13 + {&DDRB, &PINB, &PORTB, 3}, // B3 14 + {&DDRB, &PINB, &PORTB, 1}, // B1 15 + {&DDRB, &PINB, &PORTB, 2}, // B2 16 + {&DDRB, &PINB, &PORTB, 0}, // B0 17 + {&DDRF, &PINF, &PORTF, 7}, // F7 18 + {&DDRF, &PINF, &PORTF, 6}, // F6 19 + {&DDRF, &PINF, &PORTF, 5}, // F5 20 + {&DDRF, &PINF, &PORTF, 4}, // F4 21 + {&DDRF, &PINF, &PORTF, 1}, // F1 22 + {&DDRF, &PINF, &PORTF, 0}, // F0 23 + {&DDRD, &PIND, &PORTD, 4}, // D4 24 + {&DDRD, &PIND, &PORTD, 7}, // D7 25 + {&DDRB, &PINB, &PORTB, 4}, // B4 26 + {&DDRB, &PINB, &PORTB, 5}, // B5 27 + {&DDRB, &PINB, &PORTB, 6}, // B6 28 + {&DDRD, &PIND, &PORTD, 6} // D6 29 +}; +#endif // CORE_TEENSY +//------------------------------------------------------------------------------ +#elif defined(__AVR_AT90USB646__)\ +|| defined(__AVR_AT90USB1286__) +// Teensy++ 1.0 & 2.0 +static const pin_map_t pinMap[] = { + {&DDRD, &PIND, &PORTD, 0}, // D0 0 + {&DDRD, &PIND, &PORTD, 1}, // D1 1 + {&DDRD, &PIND, &PORTD, 2}, // D2 2 + {&DDRD, &PIND, &PORTD, 3}, // D3 3 + {&DDRD, &PIND, &PORTD, 4}, // D4 4 + {&DDRD, &PIND, &PORTD, 5}, // D5 5 + {&DDRD, &PIND, &PORTD, 6}, // D6 6 + {&DDRD, &PIND, &PORTD, 7}, // D7 7 + {&DDRE, &PINE, &PORTE, 0}, // E0 8 + {&DDRE, &PINE, &PORTE, 1}, // E1 9 + {&DDRC, &PINC, &PORTC, 0}, // C0 10 + {&DDRC, &PINC, &PORTC, 1}, // C1 11 + {&DDRC, &PINC, &PORTC, 2}, // C2 12 + {&DDRC, &PINC, &PORTC, 3}, // C3 13 + {&DDRC, &PINC, &PORTC, 4}, // C4 14 + {&DDRC, &PINC, &PORTC, 5}, // C5 15 + {&DDRC, &PINC, &PORTC, 6}, // C6 16 + {&DDRC, &PINC, &PORTC, 7}, // C7 17 + {&DDRE, &PINE, &PORTE, 6}, // E6 18 + {&DDRE, &PINE, &PORTE, 7}, // E7 19 + {&DDRB, &PINB, &PORTB, 0}, // B0 20 + {&DDRB, &PINB, &PORTB, 1}, // B1 21 + {&DDRB, &PINB, &PORTB, 2}, // B2 22 + {&DDRB, &PINB, &PORTB, 3}, // B3 23 + {&DDRB, &PINB, &PORTB, 4}, // B4 24 + {&DDRB, &PINB, &PORTB, 5}, // B5 25 + {&DDRB, &PINB, &PORTB, 6}, // B6 26 + {&DDRB, &PINB, &PORTB, 7}, // B7 27 + {&DDRA, &PINA, &PORTA, 0}, // A0 28 + {&DDRA, &PINA, &PORTA, 1}, // A1 29 + {&DDRA, &PINA, &PORTA, 2}, // A2 30 + {&DDRA, &PINA, &PORTA, 3}, // A3 31 + {&DDRA, &PINA, &PORTA, 4}, // A4 32 + {&DDRA, &PINA, &PORTA, 5}, // A5 33 + {&DDRA, &PINA, &PORTA, 6}, // A6 34 + {&DDRA, &PINA, &PORTA, 7}, // A7 35 + {&DDRE, &PINE, &PORTE, 4}, // E4 36 + {&DDRE, &PINE, &PORTE, 5}, // E5 37 + {&DDRF, &PINF, &PORTF, 0}, // F0 38 + {&DDRF, &PINF, &PORTF, 1}, // F1 39 + {&DDRF, &PINF, &PORTF, 2}, // F2 40 + {&DDRF, &PINF, &PORTF, 3}, // F3 41 + {&DDRF, &PINF, &PORTF, 4}, // F4 42 + {&DDRF, &PINF, &PORTF, 5}, // F5 43 + {&DDRF, &PINF, &PORTF, 6}, // F6 44 + {&DDRF, &PINF, &PORTF, 7} // F7 45 +}; +//------------------------------------------------------------------------------ +#else // CPU type +#error unknown CPU type +#endif // CPU type +//------------------------------------------------------------------------------ +/** count of pins */ +static const uint8_t digitalPinCount = sizeof(pinMap)/sizeof(pin_map_t); +//============================================================================== +/** generate bad pin number error */ +void badPinNumber(void) + __attribute__((error("Pin number is too large or not a constant"))); +//------------------------------------------------------------------------------ +/** Check for valid pin number + * @param[in] pin Number of pin to be checked. + */ +static inline __attribute__((always_inline)) +void badPinCheck(uint8_t pin) { + if (!__builtin_constant_p(pin) || pin >= digitalPinCount) { + badPinNumber(); + } +} +//------------------------------------------------------------------------------ +/** fast write helper + * @param[in] address I/O register address + * @param[in] bit bit number to write + * @param[in] level value for bit + */ +static inline __attribute__((always_inline)) +void fastBitWriteSafe(volatile uint8_t* address, uint8_t bit, bool level) { + uint8_t oldSREG; + if (address > (uint8_t*)0X5F) { + oldSREG = SREG; + cli(); + } + if (level) { + *address |= 1 << bit; + } else { + *address &= ~(1 << bit); + } + if (address > (uint8_t*)0X5F) { + SREG = oldSREG; + } +} +//------------------------------------------------------------------------------ +/** read pin value + * @param[in] pin Arduino pin number + * @return value read + */ +static inline __attribute__((always_inline)) +bool fastDigitalRead(uint8_t pin) { + badPinCheck(pin); + return (*pinMap[pin].pin >> pinMap[pin].bit) & 1; +} +//------------------------------------------------------------------------------ +/** toggle a pin + * @param[in] pin Arduino pin number + * + * If the pin is in output mode toggle the pin level. + * If the pin is in input mode toggle the state of the 20K pullup. + */ +static inline __attribute__((always_inline)) +void fastDigitalToggle(uint8_t pin) { + badPinCheck(pin); + if (pinMap[pin].pin > (uint8_t*)0X5F) { + // must write bit to high address port + *pinMap[pin].pin = 1 << pinMap[pin].bit; + } else { + // will compile to sbi and PIN register will not be read. + *pinMap[pin].pin |= 1 << pinMap[pin].bit; + } +} +//------------------------------------------------------------------------------ +/** Set pin value + * @param[in] pin Arduino pin number + * @param[in] level value to write + */ +static inline __attribute__((always_inline)) +void fastDigitalWrite(uint8_t pin, bool level) { + badPinCheck(pin); + fastBitWriteSafe(pinMap[pin].port, pinMap[pin].bit, level); +} +//------------------------------------------------------------------------------ +/** set pin mode + * @param[in] pin Arduino pin number + * @param[in] mode if true set output mode else input mode + * + * fastPinMode does not enable or disable the 20K pullup for input mode. + */ +static inline __attribute__((always_inline)) +void fastPinMode(uint8_t pin, bool mode) { + badPinCheck(pin); + fastBitWriteSafe(pinMap[pin].ddr, pinMap[pin].bit, mode); +} + +#endif // __arm__ +//------------------------------------------------------------------------------ +/** set pin configuration + * @param[in] pin Arduino pin number + * @param[in] mode If true set output mode else input mode + * @param[in] level If mode is output, set level high/low. + * If mode is input, enable or disable the pin's 20K pullup. + */ +static inline __attribute__((always_inline)) +void fastPinConfig(uint8_t pin, bool mode, bool level) { + fastPinMode(pin, mode); + fastDigitalWrite(pin, level); +} +//============================================================================== +/** + * @class DigitalPin + * @brief Fast digital port I/O + */ +template +class DigitalPin { + public: + //---------------------------------------------------------------------------- + /** Constructor */ + DigitalPin() {} + //---------------------------------------------------------------------------- + /** Constructor + * @param[in] pinMode if true set output mode else input mode. + */ + explicit DigitalPin(bool pinMode) { + mode(pinMode); + } + //---------------------------------------------------------------------------- + /** Constructor + * @param[in] mode If true set output mode else input mode + * @param[in] level If mode is output, set level high/low. + * If mode is input, enable or disable the pin's 20K pullup. + */ + DigitalPin(bool mode, bool level) { + config(mode, level); + } + //---------------------------------------------------------------------------- + /** Asignment operator + * @param[in] value If true set the pin's level high else set the + * pin's level low. + * + * @return This DigitalPin instance. + */ + inline DigitalPin & operator = (bool value) __attribute__((always_inline)) { + write(value); + return *this; + } + //---------------------------------------------------------------------------- + /** Parenthesis operator + * @return Pin's level + */ + inline operator bool () const __attribute__((always_inline)) { + return read(); + } + //---------------------------------------------------------------------------- + /** set pin configuration + * @param[in] mode If true set output mode else input mode + * @param[in] level If mode is output, set level high/low. + * If mode is input, enable or disable the pin's 20K pullup. + */ + inline __attribute__((always_inline)) + void config(bool mode, bool level) { + fastPinConfig(PinNumber, mode, level); + } + //---------------------------------------------------------------------------- + /** + * Set pin level high if output mode or enable 20K pullup if input mode. + */ + inline __attribute__((always_inline)) + void high() {write(true);} + //---------------------------------------------------------------------------- + /** + * Set pin level low if output mode or disable 20K pullup if input mode. + */ + inline __attribute__((always_inline)) + void low() {write(false);} + //---------------------------------------------------------------------------- + /** + * Set pin mode + * @param[in] pinMode if true set output mode else input mode. + * + * mode() does not enable or disable the 20K pullup for input mode. + */ + inline __attribute__((always_inline)) + void mode(bool pinMode) { + fastPinMode(PinNumber, pinMode); + } + //---------------------------------------------------------------------------- + /** @return Pin's level */ + inline __attribute__((always_inline)) + bool read() const { + return fastDigitalRead(PinNumber); + } + //---------------------------------------------------------------------------- + /** toggle a pin + * + * If the pin is in output mode toggle the pin's level. + * If the pin is in input mode toggle the state of the 20K pullup. + */ + inline __attribute__((always_inline)) + void toggle() { + fastDigitalToggle(PinNumber); + } + //---------------------------------------------------------------------------- + /** Write the pin's level. + * @param[in] value If true set the pin's level high else set the + * pin's level low. + */ + inline __attribute__((always_inline)) + void write(bool value) { + fastDigitalWrite(PinNumber, value); + } +}; + +//------------------------------------------------------------------------------ +/** Nop for timing. */ +#define nop asm volatile ("nop\n\t") +//------------------------------------------------------------------------------ +/** Pin Mode for MISO is input.*/ +const bool MISO_MODE = false; +/** Pullups disabled for MISO are disabled. */ +const bool MISO_LEVEL = false; +/** Pin Mode for MOSI is output.*/ +const bool MOSI_MODE = true; +/** Pin Mode for SCK is output. */ +const bool SCK_MODE = true; +//------------------------------------------------------------------------------ +/** + * @class SoftSPI + * @brief Fast software SPI. + */ +template +class SoftSPI { + public: + //---------------------------------------------------------------------------- + /** Initialize SoftSPI pins. */ + void begin() { + fastPinConfig(MisoPin, MISO_MODE, MISO_LEVEL); + fastPinConfig(MosiPin, MOSI_MODE, !MODE_CPHA(Mode)); + fastPinConfig(SckPin, SCK_MODE, MODE_CPOL(Mode)); + } + //---------------------------------------------------------------------------- + /** Soft SPI receive byte. + * @return Data byte received. + */ + inline __attribute__((always_inline)) + uint8_t receive() { + uint8_t data = 0; + receiveBit(7, &data); + receiveBit(6, &data); + receiveBit(5, &data); + receiveBit(4, &data); + receiveBit(3, &data); + receiveBit(2, &data); + receiveBit(1, &data); + receiveBit(0, &data); + return data; + } + //---------------------------------------------------------------------------- + /** Soft SPI send byte. + * @param[in] data Data byte to send. + */ + inline __attribute__((always_inline)) + void send(uint8_t data) { + sendBit(7, data); + sendBit(6, data); + sendBit(5, data); + sendBit(4, data); + sendBit(3, data); + sendBit(2, data); + sendBit(1, data); + sendBit(0, data); + } + //---------------------------------------------------------------------------- + /** Soft SPI transfer byte. + * @param[in] txData Data byte to send. + * @return Data byte received. + */ + inline __attribute__((always_inline)) + uint8_t transfer(uint8_t txData) { + uint8_t rxData = 0; + transferBit(7, &rxData, txData); + transferBit(6, &rxData, txData); + transferBit(5, &rxData, txData); + transferBit(4, &rxData, txData); + transferBit(3, &rxData, txData); + transferBit(2, &rxData, txData); + transferBit(1, &rxData, txData); + transferBit(0, &rxData, txData); + return rxData; + } + + private: + //---------------------------------------------------------------------------- + inline __attribute__((always_inline)) + bool MODE_CPHA(uint8_t mode) {return (mode & 1) != 0;} + inline __attribute__((always_inline)) + bool MODE_CPOL(uint8_t mode) {return (mode & 2) != 0;} + inline __attribute__((always_inline)) + void receiveBit(uint8_t bit, uint8_t* data) { + if (MODE_CPHA(Mode)) { + fastDigitalWrite(SckPin, !MODE_CPOL(Mode)); + } + nop; + nop; + fastDigitalWrite(SckPin, + MODE_CPHA(Mode) ? MODE_CPOL(Mode) : !MODE_CPOL(Mode)); + if (fastDigitalRead(MisoPin)) *data |= 1 << bit; + if (!MODE_CPHA(Mode)) { + fastDigitalWrite(SckPin, MODE_CPOL(Mode)); + } + } + //---------------------------------------------------------------------------- + inline __attribute__((always_inline)) + void sendBit(uint8_t bit, uint8_t data) { + if (MODE_CPHA(Mode)) { + fastDigitalWrite(SckPin, !MODE_CPOL(Mode)); + } + fastDigitalWrite(MosiPin, data & (1 << bit)); + fastDigitalWrite(SckPin, + MODE_CPHA(Mode) ? MODE_CPOL(Mode) : !MODE_CPOL(Mode)); + nop; + nop; + if (!MODE_CPHA(Mode)) { + fastDigitalWrite(SckPin, MODE_CPOL(Mode)); + } + } + //---------------------------------------------------------------------------- + inline __attribute__((always_inline)) + void transferBit(uint8_t bit, uint8_t* rxData, uint8_t txData) { + if (MODE_CPHA(Mode)) { + fastDigitalWrite(SckPin, !MODE_CPOL(Mode)); + } + fastDigitalWrite(MosiPin, txData & (1 << bit)); + fastDigitalWrite(SckPin, + MODE_CPHA(Mode) ? MODE_CPOL(Mode) : !MODE_CPOL(Mode)); + if (fastDigitalRead(MisoPin)) *rxData |= 1 << bit; + if (!MODE_CPHA(Mode)) { + fastDigitalWrite(SckPin, MODE_CPOL(Mode)); + } + } + //---------------------------------------------------------------------------- +}; + + diff --git a/Marlin/spi.h b/Marlin/spi.h new file mode 100644 index 000000000..349246952 --- /dev/null +++ b/Marlin/spi.h @@ -0,0 +1,68 @@ +/** + * Marlin 3D Printer Firmware + * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin] + * + * Based on Sprinter and grbl. + * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + * + */ + +#ifndef __SPI_H__ +#define __SPI_H__ + +#include +#include "softspi.h" + +template +class Spi { + static SoftSPI softSpi; + public: + inline __attribute__((always_inline)) + static void init() { + softSpi.begin(); + } + inline __attribute__((always_inline)) + static void send(uint8_t data) { + softSpi.send(data); + } + inline __attribute__((always_inline)) + static uint8_t receive() { + return softSpi.receive(); + } +}; + + +//hardware spi +template<> +class Spi { + public: + inline __attribute__((always_inline)) + static void init() { + OUT_WRITE(SCK_PIN, LOW); + OUT_WRITE(MOSI_PIN, HIGH); + SET_INPUT(MISO_PIN); + WRITE(MISO_PIN, HIGH); + } + inline __attribute__((always_inline)) + static uint8_t receive() { + SPDR = 0; + for (;!TEST(SPSR, SPIF);); + return SPDR; + } + +}; + +#endif diff --git a/Marlin/temperature.cpp b/Marlin/temperature.cpp index 909231fc0..18ce9e26f 100644 --- a/Marlin/temperature.cpp +++ b/Marlin/temperature.cpp @@ -31,6 +31,7 @@ #include "temperature.h" #include "thermistortables.h" #include "language.h" +#include "spi.h" #if ENABLED(BABYSTEPPING) #include "stepper.h" #endif @@ -942,6 +943,15 @@ void Temperature::updateTemperaturesFromRawValues() { #endif +#if ENABLED(HEATER_0_USES_MAX6675) + #ifndef MAX6675_SCK_PIN + #define MAX6675_SCK_PIN SCK_PIN + #endif + #ifndef MAX6675_DO_PIN + #define MAX6675_DO_PIN MISO_PIN + #endif + Spi max6675_spi; +#endif /** * Initialize the temperature manager @@ -1007,11 +1017,13 @@ void Temperature::init() { OUT_WRITE(SCK_PIN, LOW); OUT_WRITE(MOSI_PIN, HIGH); SET_INPUT_PULLUP(MISO_PIN); - OUT_WRITE(SS_PIN, HIGH); + max6675_spi.init(); + + OUT_WRITE(SS_PIN, HIGH); OUT_WRITE(MAX6675_SS, HIGH); - #endif //HEATER_0_USES_MAX6675 + #endif // HEATER_0_USES_MAX6675 #ifdef DIDR2 #define ANALOG_SELECT(pin) do{ if (pin < 8) SBI(DIDR0, pin); else SBI(DIDR2, pin - 8); }while(0) @@ -1356,9 +1368,7 @@ void Temperature::disable_all_heaters() { // Read a big-endian temperature value max6675_temp = 0; for (uint8_t i = sizeof(max6675_temp); i--;) { - SPDR = 0; - for (;!TEST(SPSR, SPIF);); - max6675_temp |= SPDR; + max6675_temp |= max6675_spi.receive(); if (i > 0) max6675_temp <<= 8; // shift left if not the last byte }