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199 lines
6.4 KiB
199 lines
6.4 KiB
#ifndef _LowLevel_h |
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#define _LowLevel_h |
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#include <inttypes.h> |
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#ifdef VS_INTELLISENSE |
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#define __attribute__(...) |
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#define digitalPinToPort(pin) 0 |
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#define digitalPinToBitMask(pin) 0 |
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#define portInputRegister(arg1) 0 |
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#endif |
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#if ARDUINO >= 100 |
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#include "Arduino.h" // for delayMicroseconds, digitalPinToBitMask, etc |
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#else |
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#include "WProgram.h" // for delayMicroseconds |
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#include "pins_arduino.h" // for digitalPinToBitMask, etc |
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#endif |
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#if defined(__AVR__) |
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#define PIN_TO_BASEREG(pin) (portInputRegister(digitalPinToPort(pin))) |
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#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin)) |
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#define IO_REG_TYPE uint8_t |
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#define IO_REG_ASM asm("r30") |
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#define DIRECT_READ(base, mask) (((*(base)) & (mask)) ? 1 : 0) |
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#define DIRECT_MODE_INPUT(base, mask) ((*((base)+1)) &= ~(mask)) |
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#define DIRECT_MODE_OUTPUT(base, mask) ((*((base)+1)) |= (mask)) |
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#define DIRECT_WRITE_LOW(base, mask) ((*((base)+2)) &= ~(mask)) |
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#define DIRECT_WRITE_HIGH(base, mask) ((*((base)+2)) |= (mask)) |
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#if defined (__AVR_ATtiny85__) |
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/* Note : The attiny85 clock speed = 16mhz (fuses L 0xF1, H 0xDF. E oxFF |
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OSCCAL VALUE must also be calibrated to 16mhz |
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*/ |
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#define CLEARINTERRUPT GIFR |= (1 << INTF0) | (1<<PCIF); |
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#define USERTIMER_COMPA_vect TIMER1_COMPA_vect |
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__attribute__((always_inline)) static inline void UserTimer_Init( void ) |
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{ |
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TCCR1 = 0; //stop the timer |
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TCNT1 = 0; |
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//GTCCR |= (1<<PSR1); //reset the prescaler |
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TIMSK = 0; // clear timer interrupts enable |
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} |
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__attribute__((always_inline)) static inline void UserTimer_Run(int skipTicks) |
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{ |
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TCNT1 = 0; //zero the timer |
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GTCCR |= (1 << PSR1); //reset the prescaler |
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OCR1A = skipTicks; //set the compare value |
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TCCR1 |= (1 << CTC1) | (0 << CS13) | (1 << CS12) | (1 << CS11) | (0 << CS10);//32 prescaler |
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//TCCR1 |= (1 << CTC1) | (0 << CS13) | (1 << CS12) | (0 << CS11) | (0 << CS10);//8 prescaler |
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TIMSK |= (1 << OCIE1A); //interrupt on Compare Match A |
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} |
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__attribute__((always_inline)) static inline void UserTimer_Stop() |
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{ |
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TIMSK = 0; //&= ~(1 << OCIE1A);// clear timer interrupt enable |
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TCCR1 = 0; |
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} |
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#elif defined (__AVR_ATmega328P__) |
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#define CLEARINTERRUPT EIFR |= (1 << INTF0) |
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#define USERTIMER_COMPA_vect TIMER1_COMPA_vect |
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__attribute__((always_inline)) static inline void UserTimer_Init( void ) |
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{ |
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TCCR1A = 0; |
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TCCR1B = 0; |
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TIMSK1 |= (1 << OCIE1A); // enable timer compare interrupt |
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} |
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__attribute__((always_inline)) static inline void UserTimer_Run(short skipTicks) |
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{ |
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TCNT1 = 0; |
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OCR1A = skipTicks; |
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// turn on CTC mode with 64 prescaler |
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TCCR1B = (1 << WGM12) | (1 << CS11) | (1 << CS10); |
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} |
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#define UserTimer_Stop() TCCR1B = 0 |
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#endif |
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#elif defined(__MK20DX128__) || defined(__MK20DX256__) |
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#define PIN_TO_BASEREG(pin) (portOutputRegister(pin)) |
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#define PIN_TO_BITMASK(pin) (1) |
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#define IO_REG_TYPE uint8_t |
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#define IO_REG_ASM |
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#define DIRECT_READ(base, mask) (*((base)+512)) |
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#define DIRECT_MODE_INPUT(base, mask) (*((base)+640) = 0) |
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#define DIRECT_MODE_OUTPUT(base, mask) (*((base)+640) = 1) |
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#define DIRECT_WRITE_LOW(base, mask) (*((base)+256) = 1) |
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#define DIRECT_WRITE_HIGH(base, mask) (*((base)+128) = 1) |
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#elif defined(__SAM3X8E__) |
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// Arduino 1.5.1 may have a bug in delayMicroseconds() on Arduino Due. |
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// http://arduino.cc/forum/index.php/topic,141030.msg1076268.html#msg1076268 |
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// If you have trouble with OneWire on Arduino Due, please check the |
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// status of delayMicroseconds() before reporting a bug in OneWire! |
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#define PIN_TO_BASEREG(pin) (&(digitalPinToPort(pin)->PIO_PER)) |
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#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin)) |
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#define IO_REG_TYPE uint32_t |
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#define IO_REG_ASM |
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#define DIRECT_READ(base, mask) (((*((base)+15)) & (mask)) ? 1 : 0) |
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#define DIRECT_MODE_INPUT(base, mask) ((*((base)+5)) = (mask)) |
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#define DIRECT_MODE_OUTPUT(base, mask) ((*((base)+4)) = (mask)) |
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#define DIRECT_WRITE_LOW(base, mask) ((*((base)+13)) = (mask)) |
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#define DIRECT_WRITE_HIGH(base, mask) ((*((base)+12)) = (mask)) |
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#ifndef PROGMEM |
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#define PROGMEM |
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#endif |
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#ifndef pgm_read_byte |
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#define pgm_read_byte(addr) (*(const uint8_t *)(addr)) |
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#endif |
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#elif defined(__PIC32MX__) |
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#define PIN_TO_BASEREG(pin) (portModeRegister(digitalPinToPort(pin))) |
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#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin)) |
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#define IO_REG_TYPE uint32_t |
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#define IO_REG_ASM |
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#define DIRECT_READ(base, mask) (((*(base+4)) & (mask)) ? 1 : 0) //PORTX + 0x10 |
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#define DIRECT_MODE_INPUT(base, mask) ((*(base+2)) = (mask)) //TRISXSET + 0x08 |
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#define DIRECT_MODE_OUTPUT(base, mask) ((*(base+1)) = (mask)) //TRISXCLR + 0x04 |
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#define DIRECT_WRITE_LOW(base, mask) ((*(base+8+1)) = (mask)) //LATXCLR + 0x24 |
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#define DIRECT_WRITE_HIGH(base, mask) ((*(base+8+2)) = (mask)) //LATXSET + 0x28 |
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#else |
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#error "Please define I/O register types here" |
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#endif |
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class Pin |
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{ |
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private: |
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volatile IO_REG_TYPE *reg_; |
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IO_REG_TYPE mask_; |
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byte interruptNumber_; |
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byte pinNumber_; |
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public: |
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Pin() |
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: mask_(0) |
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, reg_(0) |
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, interruptNumber_((byte) - 1) |
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, pinNumber_(255) |
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{ } |
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Pin(uint8_t pin) |
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{ |
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pinNumber_ = pin; |
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mask_ = PIN_TO_BITMASK(pin); |
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reg_ = PIN_TO_BASEREG(pin); |
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switch (pin) |
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{ |
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case 2: interruptNumber_ = 0; break; |
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case 3: interruptNumber_ = 1; break; |
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default: interruptNumber_ = (byte) - 1; |
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} |
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} |
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inline byte getPinNumber() { |
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return pinNumber_; |
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} |
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inline void inputMode() { |
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DIRECT_MODE_INPUT(reg_, mask_); |
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} |
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inline void outputMode() { |
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DIRECT_MODE_OUTPUT(reg_, mask_); |
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} |
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inline bool read() { |
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return DIRECT_READ(reg_, mask_) == 1; |
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} |
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inline void writeLow() { |
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DIRECT_WRITE_LOW(reg_, mask_); |
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} |
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inline void writeHigh() { |
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DIRECT_WRITE_HIGH(reg_, mask_); |
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} |
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inline void write(bool value) { |
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if (value) writeHigh(); |
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else writeLow(); |
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} |
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inline void attachInterrupt(void (*handler)(), int mode) |
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{ |
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CLEARINTERRUPT; // clear any pending interrupt (we want to call the handler only for interrupts happening after it is attached) |
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::attachInterrupt(interruptNumber_, handler, mode); |
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} |
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inline void detachInterrupt() { |
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::detachInterrupt(interruptNumber_); |
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} |
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}; |
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#endif
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