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- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
- *
- */
- #pragma once
-
- /**
- * Fast I/O Routines for Teensy 3.5 and Teensy 3.6
- * Use direct port manipulation to save scads of processor time.
- * Contributed by Triffid_Hunter and modified by Kliment, thinkyhead, Bob-the-Kuhn, et.al.
- */
-
- #ifndef MASK
- #define MASK(PIN) _BV(PIN)
- #endif
-
- #define GPIO_BITBAND_ADDR(reg, bit) (((uint32_t)&(reg) - 0x40000000) * 32 + (bit) * 4 + 0x42000000)
- #define GPIO_BITBAND(reg, bit) (*(uint32_t *)GPIO_BITBAND_ADDR((reg), (bit)))
-
- /**
- * Magic I/O routines
- *
- * Now you can simply SET_OUTPUT(PIN); WRITE(PIN, HIGH); WRITE(PIN, LOW);
- *
- * Why double up on these macros? see https://gcc.gnu.org/onlinedocs/gcc-4.8.5/cpp/Stringification.html
- */
-
- #define _READ(P) bool(CORE_PIN ## P ## _PINREG & CORE_PIN ## P ## _BITMASK)
-
- #define _WRITE(P,V) do{ \
- if (V) CORE_PIN ## P ## _PORTSET = CORE_PIN ## P ## _BITMASK; \
- else CORE_PIN ## P ## _PORTCLEAR = CORE_PIN ## P ## _BITMASK; \
- }while(0)
-
- #define _TOGGLE(P) (*(&(CORE_PIN ## P ## _PORTCLEAR)+1) = CORE_PIN ## P ## _BITMASK)
-
- #define _SET_INPUT(P) do{ \
- CORE_PIN ## P ## _CONFIG = PORT_PCR_MUX(1); \
- GPIO_BITBAND(CORE_PIN ## P ## _DDRREG , CORE_PIN ## P ## _BIT) = 0; \
- }while(0)
-
- #define _SET_OUTPUT(P) do{ \
- CORE_PIN ## P ## _CONFIG = PORT_PCR_MUX(1)|PORT_PCR_SRE|PORT_PCR_DSE; \
- GPIO_BITBAND(CORE_PIN ## P ## _DDRREG , CORE_PIN ## P ## _BIT) = 1; \
- }while(0)
-
- #define _SET_INPUT_PULLUP(P) do{ \
- CORE_PIN ## P ## _CONFIG = PORT_PCR_MUX(1) | PORT_PCR_PE | PORT_PCR_PS; \
- GPIO_BITBAND(CORE_PIN ## P ## _DDRREG , CORE_PIN ## P ## _BIT) = 0; \
- }while(0)
-
- #define _IS_INPUT(P) ((CORE_PIN ## P ## _DDRREG & CORE_PIN ## P ## _BITMASK) == 0)
- #define _IS_OUTPUT(P) ((CORE_PIN ## P ## _DDRREG & CORE_PIN ## P ## _BITMASK) == 0)
-
- #define READ(IO) _READ(IO)
-
- #define WRITE(IO,V) _WRITE(IO,V)
- #define TOGGLE(IO) _TOGGLE(IO)
-
- #define SET_INPUT(IO) _SET_INPUT(IO)
- #define SET_INPUT_PULLUP(IO) _SET_INPUT_PULLUP(IO)
- #define SET_INPUT_PULLDOWN SET_INPUT
- #define SET_OUTPUT(IO) _SET_OUTPUT(IO)
- #define SET_PWM SET_OUTPUT
-
- #define IS_INPUT(IO) _IS_INPUT(IO)
- #define IS_OUTPUT(IO) _IS_OUTPUT(IO)
-
- #define OUT_WRITE(IO,V) do{ SET_OUTPUT(IO); WRITE(IO,V); }while(0)
-
- // digitalRead/Write wrappers
- #define extDigitalRead(IO) digitalRead(IO)
- #define extDigitalWrite(IO,V) digitalWrite(IO,V)
-
- #define PWM_PIN(P) digitalPinHasPWM(P)
-
- /**
- * Ports, functions, and pins
- */
-
- #define DIO0_PIN 8
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