421 lines
16 KiB
C
421 lines
16 KiB
C
#ifndef OneWire_Direct_GPIO_h
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#define OneWire_Direct_GPIO_h
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// This header should ONLY be included by OneWire.cpp. These defines are
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// meant to be private, used within OneWire.cpp, but not exposed to Arduino
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// sketches or other libraries which may include OneWire.h.
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#include <stdint.h>
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// Platform specific I/O definitions
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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_BASE_ATTR asm("r30")
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#define IO_REG_MASK_ATTR
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#if defined(__AVR_ATmega4809__)
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#define DIRECT_READ(base, mask) (((*(base)) & (mask)) ? 1 : 0)
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#define DIRECT_MODE_INPUT(base, mask) ((*((base)-8)) &= ~(mask))
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#define DIRECT_MODE_OUTPUT(base, mask) ((*((base)-8)) |= (mask))
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#define DIRECT_WRITE_LOW(base, mask) ((*((base)-4)) &= ~(mask))
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#define DIRECT_WRITE_HIGH(base, mask) ((*((base)-4)) |= (mask))
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#else
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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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#endif
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#elif defined(__MK20DX128__) || defined(__MK20DX256__) || defined(__MK66FX1M0__) || defined(__MK64FX512__)
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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_BASE_ATTR
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#define IO_REG_MASK_ATTR __attribute__ ((unused))
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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(__MKL26Z64__)
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#define PIN_TO_BASEREG(pin) (portOutputRegister(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_BASE_ATTR
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#define IO_REG_MASK_ATTR
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#define DIRECT_READ(base, mask) ((*((base)+16) & (mask)) ? 1 : 0)
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#define DIRECT_MODE_INPUT(base, mask) (*((base)+20) &= ~(mask))
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#define DIRECT_MODE_OUTPUT(base, mask) (*((base)+20) |= (mask))
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#define DIRECT_WRITE_LOW(base, mask) (*((base)+8) = (mask))
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#define DIRECT_WRITE_HIGH(base, mask) (*((base)+4) = (mask))
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#elif defined(__IMXRT1052__) || defined(__IMXRT1062__)
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#define PIN_TO_BASEREG(pin) (portOutputRegister(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_BASE_ATTR
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#define IO_REG_MASK_ATTR
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#define DIRECT_READ(base, mask) ((*((base)+2) & (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)+34) = (mask))
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#define DIRECT_WRITE_HIGH(base, mask) (*((base)+33) = (mask))
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#elif defined(__SAM3X8E__) || defined(__SAM3A8C__) || defined(__SAM3A4C__)
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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_BASE_ATTR
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#define IO_REG_MASK_ATTR
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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_BASE_ATTR
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#define IO_REG_MASK_ATTR
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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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#elif defined(ARDUINO_ARCH_ESP8266)
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// Special note: I depend on the ESP community to maintain these definitions and
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// submit good pull requests. I can not answer any ESP questions or help you
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// resolve any problems related to ESP chips. Please do not contact me and please
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// DO NOT CREATE GITHUB ISSUES for ESP support. All ESP questions must be asked
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// on ESP community forums.
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#define PIN_TO_BASEREG(pin) ((volatile uint32_t*) GPO)
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#define PIN_TO_BITMASK(pin) (1 << pin)
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#define IO_REG_TYPE uint32_t
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#define IO_REG_BASE_ATTR
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#define IO_REG_MASK_ATTR
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#define DIRECT_READ(base, mask) ((GPI & (mask)) ? 1 : 0) //GPIO_IN_ADDRESS
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#define DIRECT_MODE_INPUT(base, mask) (GPE &= ~(mask)) //GPIO_ENABLE_W1TC_ADDRESS
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#define DIRECT_MODE_OUTPUT(base, mask) (GPE |= (mask)) //GPIO_ENABLE_W1TS_ADDRESS
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#define DIRECT_WRITE_LOW(base, mask) (GPOC = (mask)) //GPIO_OUT_W1TC_ADDRESS
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#define DIRECT_WRITE_HIGH(base, mask) (GPOS = (mask)) //GPIO_OUT_W1TS_ADDRESS
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#elif defined(ARDUINO_ARCH_ESP32)
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#include <driver/rtc_io.h>
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#define PIN_TO_BASEREG(pin) (0)
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#define PIN_TO_BITMASK(pin) (pin)
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#define IO_REG_TYPE uint32_t
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#define IO_REG_BASE_ATTR
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#define IO_REG_MASK_ATTR
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static inline __attribute__((always_inline))
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IO_REG_TYPE directRead(IO_REG_TYPE pin)
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{
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if ( pin < 32 )
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return (GPIO.in >> pin) & 0x1;
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else if ( pin < 40 )
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return (GPIO.in1.val >> (pin - 32)) & 0x1;
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return 0;
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}
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static inline __attribute__((always_inline))
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void directWriteLow(IO_REG_TYPE pin)
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{
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if ( pin < 32 )
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GPIO.out_w1tc = ((uint32_t)1 << pin);
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else if ( pin < 34 )
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GPIO.out1_w1tc.val = ((uint32_t)1 << (pin - 32));
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}
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static inline __attribute__((always_inline))
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void directWriteHigh(IO_REG_TYPE pin)
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{
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if ( pin < 32 )
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GPIO.out_w1ts = ((uint32_t)1 << pin);
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else if ( pin < 34 )
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GPIO.out1_w1ts.val = ((uint32_t)1 << (pin - 32));
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}
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static inline __attribute__((always_inline))
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void directModeInput(IO_REG_TYPE pin)
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{
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if ( digitalPinIsValid(pin) )
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{
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uint32_t rtc_reg(rtc_gpio_desc[pin].reg);
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if ( rtc_reg ) // RTC pins PULL settings
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{
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ESP_REG(rtc_reg) = ESP_REG(rtc_reg) & ~(rtc_gpio_desc[pin].mux);
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ESP_REG(rtc_reg) = ESP_REG(rtc_reg) & ~(rtc_gpio_desc[pin].pullup | rtc_gpio_desc[pin].pulldown);
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}
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if ( pin < 32 )
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GPIO.enable_w1tc = ((uint32_t)1 << pin);
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else
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GPIO.enable1_w1tc.val = ((uint32_t)1 << (pin - 32));
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uint32_t pinFunction((uint32_t)2 << FUN_DRV_S); // what are the drivers?
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pinFunction |= FUN_IE; // input enable but required for output as well?
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pinFunction |= ((uint32_t)2 << MCU_SEL_S);
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ESP_REG(DR_REG_IO_MUX_BASE + esp32_gpioMux[pin].reg) = pinFunction;
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GPIO.pin[pin].val = 0;
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}
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}
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static inline __attribute__((always_inline))
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void directModeOutput(IO_REG_TYPE pin)
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{
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if ( digitalPinIsValid(pin) && pin <= 33 ) // pins above 33 can be only inputs
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{
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uint32_t rtc_reg(rtc_gpio_desc[pin].reg);
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if ( rtc_reg ) // RTC pins PULL settings
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{
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ESP_REG(rtc_reg) = ESP_REG(rtc_reg) & ~(rtc_gpio_desc[pin].mux);
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ESP_REG(rtc_reg) = ESP_REG(rtc_reg) & ~(rtc_gpio_desc[pin].pullup | rtc_gpio_desc[pin].pulldown);
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}
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if ( pin < 32 )
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GPIO.enable_w1ts = ((uint32_t)1 << pin);
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else // already validated to pins <= 33
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GPIO.enable1_w1ts.val = ((uint32_t)1 << (pin - 32));
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uint32_t pinFunction((uint32_t)2 << FUN_DRV_S); // what are the drivers?
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pinFunction |= FUN_IE; // input enable but required for output as well?
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pinFunction |= ((uint32_t)2 << MCU_SEL_S);
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ESP_REG(DR_REG_IO_MUX_BASE + esp32_gpioMux[pin].reg) = pinFunction;
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GPIO.pin[pin].val = 0;
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}
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}
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#define DIRECT_READ(base, pin) directRead(pin)
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#define DIRECT_WRITE_LOW(base, pin) directWriteLow(pin)
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#define DIRECT_WRITE_HIGH(base, pin) directWriteHigh(pin)
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#define DIRECT_MODE_INPUT(base, pin) directModeInput(pin)
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#define DIRECT_MODE_OUTPUT(base, pin) directModeOutput(pin)
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// https://github.com/PaulStoffregen/OneWire/pull/47
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// https://github.com/stickbreaker/OneWire/commit/6eb7fc1c11a15b6ac8c60e5671cf36eb6829f82c
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#ifdef interrupts
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#undef interrupts
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#endif
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#ifdef noInterrupts
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#undef noInterrupts
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#endif
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#define noInterrupts() {portMUX_TYPE mux = portMUX_INITIALIZER_UNLOCKED;portENTER_CRITICAL(&mux)
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#define interrupts() portEXIT_CRITICAL(&mux);}
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//#warning "ESP32 OneWire testing"
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#elif defined(ARDUINO_ARCH_STM32)
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#define PIN_TO_BASEREG(pin) (0)
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#define PIN_TO_BITMASK(pin) ((uint32_t)digitalPinToPinName(pin))
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#define IO_REG_TYPE uint32_t
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#define IO_REG_BASE_ATTR
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#define IO_REG_MASK_ATTR
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#define DIRECT_READ(base, pin) digitalReadFast((PinName)pin)
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#define DIRECT_WRITE_LOW(base, pin) digitalWriteFast((PinName)pin, LOW)
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#define DIRECT_WRITE_HIGH(base, pin) digitalWriteFast((PinName)pin, HIGH)
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#define DIRECT_MODE_INPUT(base, pin) pin_function((PinName)pin, STM_PIN_DATA(STM_MODE_INPUT, GPIO_NOPULL, 0))
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#define DIRECT_MODE_OUTPUT(base, pin) pin_function((PinName)pin, STM_PIN_DATA(STM_MODE_OUTPUT_PP, GPIO_NOPULL, 0))
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#elif defined(__SAMD21G18A__)
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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_BASE_ATTR
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#define IO_REG_MASK_ATTR
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#define DIRECT_READ(base, mask) (((*((base)+8)) & (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)+2)) = (mask))
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#define DIRECT_WRITE_LOW(base, mask) ((*((base)+5)) = (mask))
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#define DIRECT_WRITE_HIGH(base, mask) ((*((base)+6)) = (mask))
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#elif defined(RBL_NRF51822)
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#define PIN_TO_BASEREG(pin) (0)
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#define PIN_TO_BITMASK(pin) (pin)
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#define IO_REG_TYPE uint32_t
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#define IO_REG_BASE_ATTR
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#define IO_REG_MASK_ATTR
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#define DIRECT_READ(base, pin) nrf_gpio_pin_read(pin)
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#define DIRECT_WRITE_LOW(base, pin) nrf_gpio_pin_clear(pin)
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#define DIRECT_WRITE_HIGH(base, pin) nrf_gpio_pin_set(pin)
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#define DIRECT_MODE_INPUT(base, pin) nrf_gpio_cfg_input(pin, NRF_GPIO_PIN_NOPULL)
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#define DIRECT_MODE_OUTPUT(base, pin) nrf_gpio_cfg_output(pin)
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#elif defined(__arc__) /* Arduino101/Genuino101 specifics */
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#include "scss_registers.h"
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#include "portable.h"
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#include "avr/pgmspace.h"
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#define GPIO_ID(pin) (g_APinDescription[pin].ulGPIOId)
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#define GPIO_TYPE(pin) (g_APinDescription[pin].ulGPIOType)
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#define GPIO_BASE(pin) (g_APinDescription[pin].ulGPIOBase)
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#define DIR_OFFSET_SS 0x01
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#define DIR_OFFSET_SOC 0x04
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#define EXT_PORT_OFFSET_SS 0x0A
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#define EXT_PORT_OFFSET_SOC 0x50
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/* GPIO registers base address */
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#define PIN_TO_BASEREG(pin) ((volatile uint32_t *)g_APinDescription[pin].ulGPIOBase)
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#define PIN_TO_BITMASK(pin) pin
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#define IO_REG_TYPE uint32_t
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#define IO_REG_BASE_ATTR
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#define IO_REG_MASK_ATTR
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static inline __attribute__((always_inline))
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IO_REG_TYPE directRead(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
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{
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IO_REG_TYPE ret;
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if (SS_GPIO == GPIO_TYPE(pin)) {
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ret = READ_ARC_REG(((IO_REG_TYPE)base + EXT_PORT_OFFSET_SS));
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} else {
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ret = MMIO_REG_VAL_FROM_BASE((IO_REG_TYPE)base, EXT_PORT_OFFSET_SOC);
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}
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return ((ret >> GPIO_ID(pin)) & 0x01);
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}
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static inline __attribute__((always_inline))
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void directModeInput(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
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{
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if (SS_GPIO == GPIO_TYPE(pin)) {
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WRITE_ARC_REG(READ_ARC_REG((((IO_REG_TYPE)base) + DIR_OFFSET_SS)) & ~(0x01 << GPIO_ID(pin)),
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((IO_REG_TYPE)(base) + DIR_OFFSET_SS));
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} else {
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MMIO_REG_VAL_FROM_BASE((IO_REG_TYPE)base, DIR_OFFSET_SOC) &= ~(0x01 << GPIO_ID(pin));
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}
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}
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static inline __attribute__((always_inline))
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void directModeOutput(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
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{
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if (SS_GPIO == GPIO_TYPE(pin)) {
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WRITE_ARC_REG(READ_ARC_REG(((IO_REG_TYPE)(base) + DIR_OFFSET_SS)) | (0x01 << GPIO_ID(pin)),
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((IO_REG_TYPE)(base) + DIR_OFFSET_SS));
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} else {
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MMIO_REG_VAL_FROM_BASE((IO_REG_TYPE)base, DIR_OFFSET_SOC) |= (0x01 << GPIO_ID(pin));
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}
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}
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static inline __attribute__((always_inline))
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void directWriteLow(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
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{
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if (SS_GPIO == GPIO_TYPE(pin)) {
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WRITE_ARC_REG(READ_ARC_REG(base) & ~(0x01 << GPIO_ID(pin)), base);
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} else {
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MMIO_REG_VAL(base) &= ~(0x01 << GPIO_ID(pin));
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}
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}
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static inline __attribute__((always_inline))
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void directWriteHigh(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
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{
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if (SS_GPIO == GPIO_TYPE(pin)) {
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WRITE_ARC_REG(READ_ARC_REG(base) | (0x01 << GPIO_ID(pin)), base);
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} else {
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MMIO_REG_VAL(base) |= (0x01 << GPIO_ID(pin));
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}
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}
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#define DIRECT_READ(base, pin) directRead(base, pin)
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#define DIRECT_MODE_INPUT(base, pin) directModeInput(base, pin)
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#define DIRECT_MODE_OUTPUT(base, pin) directModeOutput(base, pin)
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#define DIRECT_WRITE_LOW(base, pin) directWriteLow(base, pin)
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#define DIRECT_WRITE_HIGH(base, pin) directWriteHigh(base, pin)
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#elif defined(__riscv)
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/*
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* Tested on highfive1
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*
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* Stable results are achieved operating in the
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* two high speed modes of the highfive1. It
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* seems to be less reliable in slow mode.
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*/
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#define PIN_TO_BASEREG(pin) (0)
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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_BASE_ATTR
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#define IO_REG_MASK_ATTR
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static inline __attribute__((always_inline))
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IO_REG_TYPE directRead(IO_REG_TYPE mask)
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{
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return ((GPIO_REG(GPIO_INPUT_VAL) & mask) != 0) ? 1 : 0;
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}
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static inline __attribute__((always_inline))
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void directModeInput(IO_REG_TYPE mask)
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{
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GPIO_REG(GPIO_OUTPUT_XOR) &= ~mask;
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GPIO_REG(GPIO_IOF_EN) &= ~mask;
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GPIO_REG(GPIO_INPUT_EN) |= mask;
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GPIO_REG(GPIO_OUTPUT_EN) &= ~mask;
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}
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static inline __attribute__((always_inline))
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void directModeOutput(IO_REG_TYPE mask)
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{
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GPIO_REG(GPIO_OUTPUT_XOR) &= ~mask;
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GPIO_REG(GPIO_IOF_EN) &= ~mask;
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GPIO_REG(GPIO_INPUT_EN) &= ~mask;
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GPIO_REG(GPIO_OUTPUT_EN) |= mask;
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}
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static inline __attribute__((always_inline))
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void directWriteLow(IO_REG_TYPE mask)
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{
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GPIO_REG(GPIO_OUTPUT_VAL) &= ~mask;
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}
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static inline __attribute__((always_inline))
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void directWriteHigh(IO_REG_TYPE mask)
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{
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GPIO_REG(GPIO_OUTPUT_VAL) |= mask;
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}
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#define DIRECT_READ(base, mask) directRead(mask)
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#define DIRECT_WRITE_LOW(base, mask) directWriteLow(mask)
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#define DIRECT_WRITE_HIGH(base, mask) directWriteHigh(mask)
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#define DIRECT_MODE_INPUT(base, mask) directModeInput(mask)
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#define DIRECT_MODE_OUTPUT(base, mask) directModeOutput(mask)
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#else
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#define PIN_TO_BASEREG(pin) (0)
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#define PIN_TO_BITMASK(pin) (pin)
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#define IO_REG_TYPE unsigned int
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#define IO_REG_BASE_ATTR
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#define IO_REG_MASK_ATTR
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#define DIRECT_READ(base, pin) digitalRead(pin)
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#define DIRECT_WRITE_LOW(base, pin) digitalWrite(pin, LOW)
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#define DIRECT_WRITE_HIGH(base, pin) digitalWrite(pin, HIGH)
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#define DIRECT_MODE_INPUT(base, pin) pinMode(pin,INPUT)
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#define DIRECT_MODE_OUTPUT(base, pin) pinMode(pin,OUTPUT)
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#warning "OneWire. Fallback mode. Using API calls for pinMode,digitalRead and digitalWrite. Operation of this library is not guaranteed on this architecture."
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#endif
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#endif
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