121 lines
3.5 KiB
C++
121 lines
3.5 KiB
C++
/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
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* Copyright (c) 2017 Victor Perez
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifdef ARDUINO_ARCH_ESP32
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// --------------------------------------------------------------------------
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// Includes
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// --------------------------------------------------------------------------
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#include "HAL.h"
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#include "../shared/HAL_SPI.h"
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#include <pins_arduino.h>
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#include "spi_pins.h"
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#include "../../core/macros.h"
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#include <SPI.h>
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// --------------------------------------------------------------------------
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// Public Variables
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// --------------------------------------------------------------------------
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static SPISettings spiConfig;
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// --------------------------------------------------------------------------
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// Public functions
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// --------------------------------------------------------------------------
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#if ENABLED(SOFTWARE_SPI)
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// --------------------------------------------------------------------------
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// Software SPI
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// --------------------------------------------------------------------------
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#error "Software SPI not supported for ESP32. Use Hardware SPI."
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#else
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// --------------------------------------------------------------------------
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// Hardware SPI
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// --------------------------------------------------------------------------
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void spiBegin() {
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#if !PIN_EXISTS(SS)
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#error "SS_PIN not defined!"
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#endif
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OUT_WRITE(SS_PIN, HIGH);
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}
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void spiInit(uint8_t spiRate) {
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uint32_t clock;
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switch (spiRate) {
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case SPI_FULL_SPEED: clock = 16000000; break;
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case SPI_HALF_SPEED: clock = 8000000; break;
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case SPI_QUARTER_SPEED: clock = 4000000; break;
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case SPI_EIGHTH_SPEED: clock = 2000000; break;
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case SPI_SIXTEENTH_SPEED: clock = 1000000; break;
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case SPI_SPEED_5: clock = 500000; break;
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case SPI_SPEED_6: clock = 250000; break;
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default: clock = 1000000; // Default from the SPI library
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}
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spiConfig = SPISettings(clock, MSBFIRST, SPI_MODE0);
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SPI.begin();
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}
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uint8_t spiRec(void) {
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SPI.beginTransaction(spiConfig);
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uint8_t returnByte = SPI.transfer(0xFF);
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SPI.endTransaction();
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return returnByte;
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}
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void spiRead(uint8_t* buf, uint16_t nbyte) {
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SPI.beginTransaction(spiConfig);
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SPI.transferBytes(0, buf, nbyte);
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SPI.endTransaction();
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}
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void spiSend(uint8_t b) {
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SPI.beginTransaction(spiConfig);
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SPI.transfer(b);
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SPI.endTransaction();
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}
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void spiSendBlock(uint8_t token, const uint8_t* buf) {
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SPI.beginTransaction(spiConfig);
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SPI.transfer(token);
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SPI.writeBytes(const_cast<uint8_t*>(buf), 512);
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SPI.endTransaction();
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}
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void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode) {
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spiConfig = SPISettings(spiClock, bitOrder, dataMode);
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SPI.beginTransaction(spiConfig);
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}
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#endif // !SOFTWARE_SPI
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#endif // ARDUINO_ARCH_ESP32
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