mirror of
https://github.com/MarlinFirmware/Marlin.git
synced 2024-12-13 22:11:38 +00:00
83 lines
2.6 KiB
C
83 lines
2.6 KiB
C
/**
|
|
* 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/>.
|
|
*
|
|
*/
|
|
|
|
/**
|
|
* HAL/HAL_SPI.h
|
|
* Core Marlin definitions for SPI, implemented in the HALs
|
|
*/
|
|
|
|
#ifndef _HAL_SPI_H_
|
|
#define _HAL_SPI_H_
|
|
|
|
#include <stdint.h>
|
|
|
|
/**
|
|
* SPI speed where 0 <= index <= 6
|
|
*
|
|
* Approximate rates :
|
|
*
|
|
* 0 : 8 - 10 MHz
|
|
* 1 : 4 - 5 MHz
|
|
* 2 : 2 - 2.5 MHz
|
|
* 3 : 1 - 1.25 MHz
|
|
* 4 : 500 - 625 kHz
|
|
* 5 : 250 - 312 kHz
|
|
* 6 : 125 - 156 kHz
|
|
*
|
|
* On AVR, actual speed is F_CPU/2^(1 + index).
|
|
* On other platforms, speed should be in range given above where possible.
|
|
*/
|
|
|
|
#define SPI_FULL_SPEED 0 // Set SCK to max rate
|
|
#define SPI_HALF_SPEED 1 // Set SCK rate to half of max rate
|
|
#define SPI_QUARTER_SPEED 2 // Set SCK rate to quarter of max rate
|
|
#define SPI_EIGHTH_SPEED 3 // Set SCK rate to 1/8 of max rate
|
|
#define SPI_SIXTEENTH_SPEED 4 // Set SCK rate to 1/16 of max rate
|
|
#define SPI_SPEED_5 5 // Set SCK rate to 1/32 of max rate
|
|
#define SPI_SPEED_6 6 // Set SCK rate to 1/64 of max rate
|
|
|
|
#define SPI_LSBFIRST 0
|
|
#define SPI_MSBFIRST 1
|
|
|
|
#define SPI_DATAMODE_0 0x00
|
|
#define SPI_DATAMODE_1 0x04
|
|
#define SPI_DATAMODE_2 0x08
|
|
#define SPI_DATAMODE_3 0x0C
|
|
|
|
// Standard SPI functions
|
|
/** Initialise SPI bus */
|
|
void spiBegin(void);
|
|
/** Configure SPI for specified SPI speed */
|
|
void spiInit(uint8_t spiRate);
|
|
/** Write single byte to SPI */
|
|
void spiSend(uint8_t b);
|
|
/** Read single byte from SPI */
|
|
uint8_t spiRec(void);
|
|
/** Read from SPI into buffer */
|
|
void spiRead(uint8_t* buf, uint16_t nbyte);
|
|
/** Write token and then write from 512 byte buffer to SPI (for SD card) */
|
|
void spiSendBlock(uint8_t token, const uint8_t* buf);
|
|
/** Begin SPI transaction, set clock, bit order, data mode */
|
|
void spiBeginTransaction(uint32_t spiClock, uint8_t bitOrder, uint8_t dataMode);
|
|
|
|
#endif // _HAL_SPI_H_
|