bf125e91f9
split spi stuff in three part: - v1 : basic spi peripheral - v1_frf : v1 spi with frf mode additional bit in spi_cr2 / spi_sr - v2 : spi with variable datasize, fifo and other fancy stuff. v1 maps to f1 chips v1_frf to f2, f4 and l0,l1 v2 to f0, f3 and l4 This breaks spi_master_init API for v2 devices : function prototype from common spi header used to be abused, with DFF bit reused for CRCL bit. New v2 spi_master_init does not handle anymore CRCL bits, as it does not usually mess with other crc configuration.
70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
/** @addtogroup spi_defines
|
|
|
|
@author @htmlonly © @endhtmlonly 2011 Fergus Noble <fergusnoble@gmail.com>
|
|
|
|
*/
|
|
/*
|
|
* This file is part of the libopencm3 project.
|
|
*
|
|
* Copyright (C) 2011 Fergus Noble <fergusnoble@gmail.com>
|
|
*
|
|
* This library is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This library 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 Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
/* THIS FILE SHOULD NOT BE INCLUDED DIRECTLY, BUT ONLY VIA SPI.H
|
|
The order of header inclusion is important. spi.h includes the device
|
|
specific memorymap.h header before including this header file.*/
|
|
|
|
/** @cond */
|
|
#ifdef LIBOPENCM3_SPI_H
|
|
/** @endcond */
|
|
#pragma once
|
|
|
|
/**@{*/
|
|
|
|
#include <libopencm3/stm32/common/spi_common_all.h>
|
|
|
|
/* DFF: Data frame format */
|
|
/****************************************************************************/
|
|
/** @defgroup spi_dff SPI data frame format
|
|
@ingroup spi_defines
|
|
|
|
@{*/
|
|
|
|
#define SPI_CR1_DFF_8BIT (0 << 11)
|
|
#define SPI_CR1_DFF_16BIT (1 << 11)
|
|
|
|
/**@}*/
|
|
|
|
#define SPI_CR1_DFF (1 << 11)
|
|
|
|
/* --- Function prototypes ------------------------------------------------- */
|
|
|
|
BEGIN_DECLS
|
|
|
|
int spi_init_master(uint32_t spi, uint32_t br, uint32_t cpol, uint32_t cpha,
|
|
uint32_t dff, uint32_t lsbfirst);
|
|
void spi_set_dff_8bit(uint32_t spi);
|
|
void spi_set_dff_16bit(uint32_t spi);
|
|
|
|
END_DECLS
|
|
|
|
/** @cond */
|
|
#else
|
|
#warning "spi_common_v1.h should not be included explicitly, only via spi.h"
|
|
#endif
|
|
/** @endcond */
|
|
/**@}*/
|
|
|