219 lines
7.5 KiB
C
219 lines
7.5 KiB
C
/****************************************************************************
|
|
* apps/system/spi/spitool.h
|
|
*
|
|
* Copyright (C) 2019 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
* Dave Marples <dave@marples.net>
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifndef __APPS_SYSTEM_SPI_SPITOOLS_H
|
|
#define __APPS_SYSTEM_SPI_SPITOOLS_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
#include <nuttx/compiler.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <stdbool.h>
|
|
#include <errno.h>
|
|
|
|
#include <nuttx/spi/spi_transfer.h>
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
|
|
/* Configuration ************************************************************/
|
|
|
|
/* CONFIG_NSH_BUILTIN_APPS - Build the tools as an NSH built-in command
|
|
* CONFIG_SPITOOL_MINBUS - Smallest bus index supported by the hardware
|
|
* (default 0).
|
|
* CONFIG_SPITOOL_MAXBUS - Largest bus index supported by the hardware
|
|
* (default 3)
|
|
* CONFIG_SPITOOL_DEFFREQ - Default frequency (default: 40000000)
|
|
* CONFIG_SPITOOL_DEFMODE - Default mode, where;
|
|
* 0 = CPOL=0, CHPHA=0
|
|
* 1 = CPOL=0, CHPHA=1
|
|
* 2 = CPOL=1, CHPHA=0
|
|
* 3 = CPOL=1, CHPHA=1
|
|
* CONFIG_SPITOOL_DEFWIDTH - Default bit width (default 8)
|
|
* CONFIG_SPITOOL_DEFWORDS - Default number of words to exchange
|
|
* (default 1)
|
|
*/
|
|
|
|
#ifndef CONFIG_SPITOOL_MINBUS
|
|
# define CONFIG_SPITOOL_MINBUS 0
|
|
#endif
|
|
|
|
#ifndef CONFIG_SPITOOL_MAXBUS
|
|
# define CONFIG_SPITOOL_MAXBUS 3
|
|
#endif
|
|
|
|
#ifndef CONFIG_SPITOOL_DEFFREQ
|
|
# define CONFIG_SPITOOL_DEFFREQ 4000000
|
|
#endif
|
|
|
|
#ifndef CONFIG_SPITOOL_DEFMODE
|
|
#define CONFIG_SPITOOL_DEFMODE 0 /* CPOL=0, CHPHA=0 */
|
|
#endif
|
|
|
|
#ifndef CONFIG_SPITOOL_DEFWIDTH
|
|
#define CONFIG_SPITOOL_DEFWIDTH 8
|
|
#endif
|
|
|
|
#ifndef CONFIG_SPITOOL_DEFWORDS
|
|
#define CONFIG_SPITOOL_DEFWORDS 1
|
|
#endif
|
|
|
|
/* This is the maximum number of arguments that will be accepted for a
|
|
* command. This is only used for sizing a hardcoded array and is set
|
|
* to be sufficiently large to support all possible SPI tool arguments and
|
|
* then some.
|
|
*/
|
|
|
|
#define MAX_ARGUMENTS 12
|
|
|
|
/* Maximum size of one command line */
|
|
|
|
#define MAX_LINELEN 80
|
|
#define MAX_XDATA (MAX_LINELEN/2)
|
|
|
|
/* Are we using the NuttX console for I/O? Or some other character device? */
|
|
|
|
#ifdef CONFIG_SPITOOL_INDEV
|
|
# define INFD(p) ((p)->ss_infd)
|
|
# define INSTREAM(p) ((p)->ss_instream)
|
|
#else
|
|
# define INFD(p) 0
|
|
# define INSTREAM(p) stdin
|
|
#endif
|
|
|
|
#ifdef CONFIG_SPITOOL_OUTDEV
|
|
# define OUTFD(p) ((p)->ss_outfd)
|
|
# define OUTSTREAM(p) ((p)->ss_outstream)
|
|
#else
|
|
# define OUTFD(p) 1
|
|
# define OUTSTREAM(p) stdout
|
|
#endif
|
|
|
|
/* Output is via printf but can be changed using this macro */
|
|
|
|
#ifdef CONFIG_CPP_HAVE_VARARGS
|
|
# define spi_output(v, ...) printf(v, ##__VA_ARGS__)
|
|
#else
|
|
# define spi_output printf
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Types
|
|
****************************************************************************/
|
|
|
|
struct spitool_s
|
|
{
|
|
/* Sticky options */
|
|
|
|
uint8_t bus; /* [-b bus] is the SPI bus number */
|
|
uint8_t width; /* [-w width] is the data width (8 or 16) */
|
|
uint32_t freq; /* [-f freq] SPI frequency */
|
|
uint32_t count; /* [-x count] No of words to exchange */
|
|
uint32_t csn; /* [-n CSn] Chip select number for devtype */
|
|
uint32_t devtype; /* [-t devtype] DevType (see spi_devtype_e) */
|
|
bool command; /* [-c 0|1] Send as command or data? */
|
|
useconds_t udelay; /* [-u udelay] Delay in uS after transfer */
|
|
uint8_t mode; /* [-m mode] Mode to use for transfer */
|
|
|
|
/* Output streams */
|
|
|
|
#ifdef CONFIG_SPITOOL_OUTDEV
|
|
int ss_outfd; /* Output file descriptor */
|
|
FILE *ss_outstream; /* Output stream */
|
|
#endif
|
|
};
|
|
|
|
typedef int (*cmd_t)(FAR struct spitool_s *spitool, int argc,
|
|
FAR char **argv);
|
|
|
|
struct cmdmap_s
|
|
{
|
|
FAR const char *cmd; /* Name of the command */
|
|
cmd_t handler; /* Function that handles the command */
|
|
FAR const char *desc; /* Short description */
|
|
FAR const char *usage; /* Usage instructions for 'help' command */
|
|
};
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
extern const char g_spiargrequired[];
|
|
extern const char g_spiarginvalid[];
|
|
extern const char g_spiargrange[];
|
|
extern const char g_spiincompleteparam[];
|
|
extern const char g_spicmdnotfound[];
|
|
extern const char g_spitoomanyargs[];
|
|
extern const char g_spicmdfailed[];
|
|
extern const char g_spixfrerror[];
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
/* Message handler */
|
|
|
|
ssize_t spitool_exchange(FAR struct spitool_s *spitool,
|
|
FAR const void *outbuffer, size_t noutbytes,
|
|
FAR void *inbuffer, size_t ninbytes);
|
|
int spitool_printf(FAR struct spitool_s *spitool, const char *fmt, ...);
|
|
void spitool_flush(FAR struct spitool_s *spitool);
|
|
|
|
/* Command handlers */
|
|
|
|
int spicmd_bus(FAR struct spitool_s *spitool, int argc, FAR char **argv);
|
|
int spicmd_exch(FAR struct spitool_s *spitool, int argc, FAR char **argv);
|
|
|
|
/* Common logic */
|
|
|
|
int spitool_common_args(FAR struct spitool_s *spitool, FAR char **arg);
|
|
|
|
/* Driver access utilities */
|
|
|
|
FAR char *spidev_path(int bus);
|
|
bool spidev_exists(int bus);
|
|
int spidev_open(int bus);
|
|
int spidev_transfer(int fd, FAR struct spi_sequence_s *seq);
|
|
|
|
#endif /* __APPS_SYSTEM_SPI_SPITOOLS_H */
|