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direct_pin_read.h
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direct_pin_read.h
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#ifndef direct_pin_read_h_
#define direct_pin_read_h_
#if defined(__AVR__)
#define IO_REG_TYPE uint8_t
#define PIN_TO_BASEREG(pin) (portInputRegister(digitalPinToPort(pin)))
#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
#define DIRECT_PIN_READ(base, mask) (((*(base)) & (mask)) ? 1 : 0)
#elif defined(TEENSYDUINO) && (defined(KINETISK) || defined(KINETISL))
#define IO_REG_TYPE uint8_t
#define PIN_TO_BASEREG(pin) (portInputRegister(digitalPinToPort(pin)))
#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
#define DIRECT_PIN_READ(base, mask) (((*(base)) & (mask)) ? 1 : 0)
#elif defined(__IMXRT1052__) || defined(__IMXRT1062__)
#define IO_REG_TYPE uint32_t
#define PIN_TO_BASEREG(pin) (portOutputRegister(pin))
#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
#define DIRECT_PIN_READ(base, mask) (((*(base)) & (mask)) ? 1 : 0)
#elif defined(__SAM3X8E__) // || defined(ESP8266)
#define IO_REG_TYPE uint32_t
#define PIN_TO_BASEREG(pin) (portInputRegister(digitalPinToPort(pin)))
#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
#define DIRECT_PIN_READ(base, mask) (((*(base)) & (mask)) ? 1 : 0)
#elif defined(__PIC32MX__)
#define IO_REG_TYPE uint32_t
#define PIN_TO_BASEREG(pin) (portModeRegister(digitalPinToPort(pin)))
#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
#define DIRECT_PIN_READ(base, mask) (((*(base+4)) & (mask)) ? 1 : 0)
/* ESP8266 v2.0.0 Arduino workaround for bug https://github.com/esp8266/Arduino/issues/1110 */
#elif defined(ESP8266)
#define IO_REG_TYPE uint32_t
#define PIN_TO_BASEREG(pin) ((volatile uint32_t *)(0x60000000+(0x318)))
#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
#define DIRECT_PIN_READ(base, mask) (((*(base)) & (mask)) ? 1 : 0)
/* ESP32 Arduino (https://github.com/espressif/arduino-esp32) */
#elif defined(ESP32)
#define IO_REG_TYPE uint32_t
#define PIN_TO_BASEREG(pin) (portInputRegister(digitalPinToPort(pin)))
#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
#define DIRECT_PIN_READ(base, mask) (((*(base)) & (mask)) ? 1 : 0)
#elif defined(__SAMD21G18A__) || defined(__SAMD21E18A__)
#define IO_REG_TYPE uint32_t
#define PIN_TO_BASEREG(pin) portModeRegister(digitalPinToPort(pin))
#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
#define DIRECT_PIN_READ(base, mask) (((*((base)+8)) & (mask)) ? 1 : 0)
#elif defined(__SAMD51__)
#define IO_REG_TYPE uint32_t
#define PIN_TO_BASEREG(pin) portInputRegister(digitalPinToPort(pin))
#define PIN_TO_BITMASK(pin) (digitalPinToBitMask(pin))
#define DIRECT_PIN_READ(base, mask) (((*(base)) & (mask)) ? 1 : 0)
#elif defined(RBL_NRF51822)
#define IO_REG_TYPE uint32_t
#define PIN_TO_BASEREG(pin) (0)
#define PIN_TO_BITMASK(pin) (pin)
#define DIRECT_PIN_READ(base, pin) nrf_gpio_pin_read(pin)
#elif defined(ARDUINO_ARCH_NRF52840)
#define IO_REG_TYPE uint32_t
#define PIN_TO_BASEREG(pin) (0)
#define PIN_TO_BITMASK(pin) digitalPinToPinName(pin)
#define DIRECT_PIN_READ(base, pin) nrf_gpio_pin_read(pin)
#elif defined(ARDUINO_NANO_RP2040_CONNECT)
#define IO_REG_TYPE pin_size_t
#define PIN_TO_BASEREG(pin) (0)
#define PIN_TO_BITMASK(pin) pin
#define DIRECT_PIN_READ(base, pin) digitalRead(pin)
#elif defined(__arc__) /* Arduino101/Genuino101 specifics */
#include "scss_registers.h"
#include "portable.h"
#include "avr/pgmspace.h"
#define GPIO_ID(pin) (g_APinDescription[pin].ulGPIOId)
#define GPIO_TYPE(pin) (g_APinDescription[pin].ulGPIOType)
#define GPIO_BASE(pin) (g_APinDescription[pin].ulGPIOBase)
#define EXT_PORT_OFFSET_SS 0x0A
#define EXT_PORT_OFFSET_SOC 0x50
#define PIN_TO_BASEREG(pin) ((volatile uint32_t *)g_APinDescription[pin].ulGPIOBase)
#define PIN_TO_BITMASK(pin) pin
#define IO_REG_TYPE uint32_t
static inline __attribute__((always_inline))
IO_REG_TYPE directRead(volatile IO_REG_TYPE *base, IO_REG_TYPE pin)
{
IO_REG_TYPE ret;
if (SS_GPIO == GPIO_TYPE(pin)) {
ret = READ_ARC_REG(((IO_REG_TYPE)base + EXT_PORT_OFFSET_SS));
} else {
ret = MMIO_REG_VAL_FROM_BASE((IO_REG_TYPE)base, EXT_PORT_OFFSET_SOC);
}
return ((ret >> GPIO_ID(pin)) & 0x01);
}
#define DIRECT_PIN_READ(base, pin) directRead(base, pin)
#endif
#endif