Marlin 2.0 for Flying Bear 4S/5
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

156 lines
4.3 KiB

/**
* Marlin 3D Printer Firmware
* Copyright (C) 2019 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 <http://www.gnu.org/licenses/>.
*
*/
#if defined(ARDUINO_ARCH_STM32) && !defined(STM32GENERIC)
// --------------------------------------------------------------------------
// Includes
// --------------------------------------------------------------------------
#include "../../inc/MarlinConfig.h"
#include <SPI.h>
// --------------------------------------------------------------------------
// Public Variables
// --------------------------------------------------------------------------
static SPISettings spiConfig;
// --------------------------------------------------------------------------
// Public functions
// --------------------------------------------------------------------------
#if ENABLED(SOFTWARE_SPI)
// --------------------------------------------------------------------------
// Software SPI
// --------------------------------------------------------------------------
#error "Software SPI not supported for STM32. Use Hardware SPI."
#else
// --------------------------------------------------------------------------
// Hardware SPI
// --------------------------------------------------------------------------
/**
* VGPV SPI speed start and PCLK2/2, by default 108/2 = 54Mhz
*/
/**
* @brief Begin SPI port setup
*
* @return Nothing
*
* @details Only configures SS pin since stm32duino creates and initialize the SPI object
*/
void spiBegin(void) {
#if !PIN_EXISTS(SS)
#error "SS_PIN not defined!"
#endif
SET_OUTPUT(SS_PIN);
WRITE(SS_PIN, HIGH);
}
/** Configure SPI for specified SPI speed */
void spiInit(uint8_t spiRate) {
// Use datarates Marlin uses
uint32_t clock;
switch (spiRate) {
case SPI_FULL_SPEED: clock = 20000000; break; // 13.9mhz=20000000 6.75mhz=10000000 3.38mhz=5000000 .833mhz=1000000
case SPI_HALF_SPEED: clock = 5000000; break;
case SPI_QUARTER_SPEED: clock = 2500000; break;
case SPI_EIGHTH_SPEED: clock = 1250000; break;
case SPI_SPEED_5: clock = 625000; break;
case SPI_SPEED_6: clock = 300000; break;
default:
clock = 4000000; // Default from the SPI library
}
spiConfig = SPISettings(clock, MSBFIRST, SPI_MODE0);
SPI.begin();
}
/**
* @brief Receives a single byte from the SPI port.
*
* @return Byte received
*
* @details
*/
uint8_t spiRec(void) {
SPI.beginTransaction(spiConfig);
uint8_t returnByte = SPI.transfer(0xFF);
SPI.endTransaction();
return returnByte;
}
/**
* @brief Receives a number of bytes from the SPI port to a buffer
*
* @param buf Pointer to starting address of buffer to write to.
* @param nbyte Number of bytes to receive.
* @return Nothing
*
* @details Uses DMA
*/
void spiRead(uint8_t* buf, uint16_t nbyte) {
if (nbyte == 0) return;
memset(buf, 0xFF, nbyte);
SPI.beginTransaction(spiConfig);
SPI.transfer(buf, nbyte);
SPI.endTransaction();
}
/**
* @brief Sends a single byte on SPI port
*
* @param b Byte to send
*
* @details
*/
void spiSend(uint8_t b) {
SPI.beginTransaction(spiConfig);
SPI.transfer(b);
SPI.endTransaction();
}
/**
* @brief Write token and then write from 512 byte buffer to SPI (for SD card)
*
* @param buf Pointer with buffer start address
* @return Nothing
*
* @details Use DMA
*/
void spiSendBlock(uint8_t token, const uint8_t* buf) {
uint8_t rxBuf[512];
SPI.beginTransaction(spiConfig);
SPI.transfer(token);
SPI.transfer((uint8_t*)buf, &rxBuf, 512);
SPI.endTransaction();
}
#endif // SOFTWARE_SPI
#endif // ARDUINO_ARCH_STM32