116 lines
2.9 KiB
C++
116 lines
2.9 KiB
C++
/**
|
|
* 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
|
|
* Copyright (c) 2017 Victor Perez
|
|
*
|
|
* 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/>.
|
|
*
|
|
*/
|
|
#ifdef ARDUINO_ARCH_ESP32
|
|
|
|
#include "../../inc/MarlinConfig.h"
|
|
|
|
#include "../shared/HAL_SPI.h"
|
|
|
|
#include <pins_arduino.h>
|
|
#include <SPI.h>
|
|
|
|
// ------------------------
|
|
// Public Variables
|
|
// ------------------------
|
|
|
|
static SPISettings spiConfig;
|
|
|
|
// ------------------------
|
|
// Public functions
|
|
// ------------------------
|
|
|
|
#if ENABLED(SOFTWARE_SPI)
|
|
|
|
// ------------------------
|
|
// Software SPI
|
|
// ------------------------
|
|
#error "Software SPI not supported for ESP32. Use Hardware SPI."
|
|
|
|
#else
|
|
|
|
// ------------------------
|
|
// Hardware SPI
|
|
// ------------------------
|
|
|
|
void spiBegin() {
|
|
#if !PIN_EXISTS(SS)
|
|
#error "SS_PIN not defined!"
|
|
#endif
|
|
|
|
OUT_WRITE(SS_PIN, HIGH);
|
|
}
|
|
|
|
void spiInit(uint8_t spiRate) {
|
|
uint32_t clock;
|
|
|
|
switch (spiRate) {
|
|
case SPI_FULL_SPEED: clock = 16000000; break;
|
|
case SPI_HALF_SPEED: clock = 8000000; break;
|
|
case SPI_QUARTER_SPEED: clock = 4000000; break;
|
|
case SPI_EIGHTH_SPEED: clock = 2000000; break;
|
|
case SPI_SIXTEENTH_SPEED: clock = 1000000; break;
|
|
case SPI_SPEED_5: clock = 500000; break;
|
|
case SPI_SPEED_6: clock = 250000; break;
|
|
default: clock = 1000000; // Default from the SPI library
|
|
}
|
|
|
|
spiConfig = SPISettings(clock, MSBFIRST, SPI_MODE0);
|
|
SPI.begin();
|
|
}
|
|
|
|
uint8_t spiRec() {
|
|
SPI.beginTransaction(spiConfig);
|
|
uint8_t returnByte = SPI.transfer(0xFF);
|
|
SPI.endTransaction();
|
|
return returnByte;
|
|
}
|
|
|
|
void spiRead(uint8_t* buf, uint16_t nbyte) {
|
|
SPI.beginTransaction(spiConfig);
|
|
SPI.transferBytes(0, buf, nbyte);
|
|
SPI.endTransaction();
|
|
}
|
|
|
|
void spiSend(uint8_t b) {
|
|
SPI.beginTransaction(spiConfig);
|
|
SPI.transfer(b);
|
|
SPI.endTransaction();
|
|
}
|
|
|
|
void spiSendBlock(uint8_t token, const uint8_t* buf) {
|
|
SPI.beginTransaction(spiConfig);
|
|
SPI.transfer(token);
|
|
SPI.writeBytes(const_cast<uint8_t*>(buf), 512);
|
|
SPI.endTransaction();
|
|
}
|
|
|
|
void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode) {
|
|
spiConfig = SPISettings(spiClock, bitOrder, dataMode);
|
|
|
|
SPI.beginTransaction(spiConfig);
|
|
}
|
|
|
|
#endif // !SOFTWARE_SPI
|
|
|
|
#endif // ARDUINO_ARCH_ESP32
|