/** * 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 <http://www.gnu.org/licenses/>. * */ #ifndef __SPI_H__ #define __SPI_H__ #include <stdint.h> #include "softspi.h" template<uint8_t MisoPin, uint8_t MosiPin, uint8_t SckPin> class SPI { static SoftSPI<MisoPin, MosiPin, SckPin> softSPI; public: FORCE_INLINE static void init() { softSPI.begin(); } FORCE_INLINE static void send(uint8_t data) { softSPI.send(data); } FORCE_INLINE static uint8_t receive() { return softSPI.receive(); } }; // Hardware SPI template<> class SPI<MISO_PIN, MOSI_PIN, SCK_PIN> { public: FORCE_INLINE static void init() { OUT_WRITE(SCK_PIN, LOW); OUT_WRITE(MOSI_PIN, HIGH); SET_INPUT(MISO_PIN); WRITE(MISO_PIN, HIGH); } FORCE_INLINE static uint8_t receive() { SPDR = 0; for (;!TEST(SPSR, SPIF);); return SPDR; } }; #endif // __SPI_H__