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Add cmddata method to the SPI interface

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3157 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2010-12-03 01:37:56 +00:00
parent 1907d3b339
commit d720db1814
19 changed files with 234 additions and 50 deletions
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2
arch/arm/src/imx/chip.h
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@ -1,7 +1,7 @@
/************************************************************************************
* arch/arm/src/imx/chip.h
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without

23
arch/arm/src/imx/imx_cspi.h
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@ -1,7 +1,7 @@
/************************************************************************************
* arch/arm/src/imx/imx_cspi.h
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@ -176,23 +176,30 @@ extern "C" {
* Public Functions
************************************************************************************/
/* The external functions, imx_spiselect and imx_spistatus must be provided by
* board-specific logic. The are implementations of the select and status methods
* SPI interface defined by struct spi_ops_s (see include/nuttx/spi.h). All other
* methods (including up_spiinitialize()) are provided by common logic. To use this
* common SPI logic on your board:
/* The external functions, imx_spiselect, imx_spistatus, and imx_cmddaa must be
* provided by board-specific logic. These are implementations of the select and
* status methods of the SPI interface defined by struct spi_ops_s (see
* include/nuttx/spi.h). All other methods (including up_spiinitialize()) are
* provided by common logic. To use this common SPI logic on your board:
*
* 1. Provide imx_spiselect() and imx_spistatus() functions in your board-specific
* logic. This function will perform chip selection and status operations using
* GPIOs in the way your board is configured.
* 2. Add a call to up_spiinitialize() in your low level initialization logic
* 3. The handle returned by up_spiinitialize() may then be used to bind the
* 2. If CONFIG_SPI_CMDDATA is defined in your NuttX configuration, provide the
* imx_spicmddata() function in your board-specific logic. This function will
* perform cmd/data selection operations using GPIOs in the way your board is
* configured.
* 3. Add a call to up_spiinitialize() in your low level initialization logic
* 4. The handle returned by up_spiinitialize() may then be used to bind the
* SPI driver to higher level logic (e.g., calling mmcsd_spislotinitialize(),
* for example, will bind the SPI driver to the SPI MMC/SD driver).
*/
EXTERN void imx_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
EXTERN uint8_t imx_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
#ifdef CONFIG_SPI_CMDDATA
EXTERN int imx_spicmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
#endif
#undef EXTERN
#ifdef __cplusplus

2
arch/arm/src/imx/imx_memorymap.h
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@ -1,7 +1,7 @@
/************************************************************************************
* arch/arm/src/imx/imx_memorymap.h
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without

3
arch/arm/src/imx/imx_spi.c
View File

@ -197,6 +197,9 @@ static const struct spi_ops_s g_spiops =
.setmode = spi_setmode,
.setbits = spi_setbits,
.status = imx_spistatus, /* Provided externally by board logic */
#ifdef CONFIG_SPI_CMDDATA
.cmddata = imx_spicmddata,
#endif
.send = spi_send,
#ifdef CONFIG_SPI_EXCHANGE
.exchange = spi_exchange,

2
arch/arm/src/imx/imx_system.h
View File

@ -1,7 +1,7 @@
/************************************************************************************
* arch/arm/src/imx/imx_system.h
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without

18
arch/arm/src/lm3s/lm3s_internal.h
View File

@ -474,9 +474,10 @@ EXTERN int lm3s_ethinitialize(int intf);
#endif
/****************************************************************************
* The external functions, lm3s_spiselect and lm3s_spistatus must be provided
* by board-specific logic. The are implementations of the select and status
* methods SPI interface defined by struct spi_ops_s (see include/nuttx/spi.h).
* The external functions, lm3s_spiselect, lm3s_spistatus, and
* lm3s_spicmddata must be provided by board-specific logic. These are
* implementations of the select, status, and cmddaa methods of the SPI
* interface defined by struct spi_ops_s (see include/nuttx/spi.h).
* All other methods (including up_spiinitialize()) are provided by common
* logic. To use this common SPI logic on your board:
*
@ -485,9 +486,13 @@ EXTERN int lm3s_ethinitialize(int intf);
* 2. Provide lm3s_spiselect() and lm3s_spistatus() functions in your
* board-specific logic. These functions will perform chip selection and
* status operations using GPIOs in the way your board is configured.
* 3. Add a call to up_spiinitialize() in your low level application
* 3. If CONFIG_SPI_CMDDATA is defined in your NuttX configuration, provide
* the lm3s_spicmddata() function in your board-specific logic. This
* functions will perform cmd/data selection operations using GPIOs in
* the way your board is configured.
* 4. Add a call to up_spiinitialize() in your low level application
* initialization logic
* 4. The handle returned by up_spiinitialize() may then be used to bind the
* 5. The handle returned by up_spiinitialize() may then be used to bind the
* SPI driver to higher level logic (e.g., calling
* mmcsd_spislotinitialize(), for example, will bind the SPI driver to
* the SPI MMC/SD driver).
@ -498,6 +503,9 @@ struct spi_dev_s;
enum spi_dev_e;
EXTERN void lm3s_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
EXTERN uint8_t lm3s_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
#ifdef CONFIG_SPI_CMDDATA
EXTERN int lm3s_spicmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
#endif
#undef EXTERN
#if defined(__cplusplus)

5
arch/arm/src/lm3s/lm3s_ssi.c
View File

@ -1,5 +1,5 @@
/****************************************************************************
* arch/arm/src/lm32/lm3s_spi.c
* arch/arm/src/lm32/lm3s_ssi.c
*
* Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
@ -279,6 +279,9 @@ static const struct spi_ops_s g_spiops =
.setmode = ssi_setmode,
.setbits = ssi_setbits,
.status = lm3s_spistatus, /* Provided externally by board logic */
#ifdef CONFIG_SPI_CMDDATA
.cmddata = lm3s_spicmddata,
#endif
.send = ssi_send,
#ifdef CONFIG_SPI_EXCHANGE
.exchange = ssi_exchange,

29
arch/arm/src/lpc17xx/lpc17_internal.h
View File

@ -555,22 +555,26 @@ EXTERN int lpc17_dumpgpio(uint16_t pinset, const char *msg);
EXTERN void lpc17_clrpend(int irq);
/************************************************************************************
* Name: lpc17_spi/ssp0/ssp1select and lpc17_spi/ssp0/ssp1status
* Name: lpc17_spi/ssp0/ssp1select, lpc17_spi/ssp0/ssp1status, and
* lpc17_spi/ssp0/ssp1cmddata
*
* Description:
* The external functions, lpc17_spi/ssp0/ssp1select and lpc17_spi/ssp0/ssp1status
* must be provided by board-specific logic. They are implementations of the select
* and status methods of the SPI interface defined by struct spi_ops_s (see
* include/nuttx/spi.h). All other methods (including up_spiinitialize())
* are provided by common LPC17xx logic. To use this common SPI logic on your
* board:
* These external functions must be provided by board-specific logic. They are
* implementations of the select, status, and cmddata methods of the SPI interface
* defined by struct spi_ops_s (see include/nuttx/spi.h). All other methods
* including up_spiinitialize()) are provided by common LPC17xx logic. To use
* this common SPI logic on your board:
*
* 1. Provide logic in lpc17_boardinitialize() to configure SPI/SSP chip select
* pins.
* 2. Provide lpc17_spi/ssp0/ssp1select() and lpc17_spi/ssp0/ssp1status() functions
* in your board-specific logic. These functions will perform chip selection
* and status operations using GPIOs in the way your board is configured.
* 3. Add a calls to up_spiinitialize() in your low level application
* 2. If CONFIG_SPI_CMDDATA is defined in the NuttX configuration, provide
* lpc17_spi/ssp0/ssp1cmddata() functions in your board-specific logic. These
* functions will perform cmd/data selection operations using GPIOs in the way
* your board is configured.
* 3. Add a call to up_spiinitialize() in your low level application
* initialization logic
* 4. The handle returned by up_spiinitialize() may then be used to bind the
* SPI driver to higher level logic (e.g., calling
@ -585,14 +589,23 @@ enum spi_dev_e;
#ifdef CONFIG_LPC17_SPI
EXTERN void lpc17_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
EXTERN uint8_t lpc17_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
#ifdef CONFIG_SPI_CMDDATA
EXTERN int lpc17_spicmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
#endif
#endif
#ifdef CONFIG_LPC17_SSP0
EXTERN void lpc17_ssp0select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
EXTERN uint8_t lpc17_ssp0status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
#ifdef CONFIG_SPI_CMDDATA
EXTERN int lpc17_ssp0cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
#endif
#endif
#ifdef CONFIG_LPC17_SSP1
EXTERN void lpc17_ssp1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
EXTERN uint8_t lpc17_ssp1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
#ifdef CONFIG_SPI_CMDDATA
EXTERN int lpc17_ssp1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
#endif
#endif
/****************************************************************************

3
arch/arm/src/lpc17xx/lpc17_spi.c
View File

@ -147,6 +147,9 @@ static const struct spi_ops_s g_spiops =
.setmode = spi_setmode,
.setbits = spi_setbits,
.status = lpc17_spistatus,
#ifdef CONFIG_SPI_CMDDATA
.cmddata = lpc17_spicmddata,
#endif
.send = spi_send,
.sndblock = spi_sndblock,
.recvblock = spi_recvblock,

6
arch/arm/src/lpc17xx/lpc17_ssp.c
View File

@ -171,6 +171,9 @@ static const struct spi_ops_s g_spi0ops =
.setmode = ssp_setmode,
.setbits = ssp_setbits,
.status = lpc17_ssp0status,
#ifdef CONFIG_SPI_CMDDATA
.cmddata = lpc17_ssp0cmddata,
#endif
.send = ssp_send,
.sndblock = ssp_sndblock,
.recvblock = ssp_recvblock,
@ -198,6 +201,9 @@ static const struct spi_ops_s g_spi1ops =
.setmode = ssp_setmode,
.setbits = ssp_setbits,
.status = lpc17_ssp1status,
#ifdef CONFIG_SPI_CMDDATA
.cmddata = lpc17_ssp1cmddata,
#endif
.send = ssp_send,
.sndblock = ssp_sndblock,
.recvblock = ssp_recvblock,

23
arch/arm/src/lpc313x/lpc313x_internal.h
View File

@ -173,21 +173,25 @@ EXTERN void lpc313x_clockconfig(void);
* Name: lpc313x_spiselect and lpc313x_spistatus
*
* Description:
* The external functions, lpc313x_spiselect and lpc313x_spistatus must be
* provided by board-specific logic. They are implementations of the select
* and status methods of the SPI interface defined by struct spi_ops_s (see
* include/nuttx/spi.h). All other methods (including up_spiinitialize())
* are provided by common LPC313X logic. To use this common SPI logic on your
* board:
* The external functions, lpc313x_spiselect, lpc313x_spistatus, and
* lpc313x_spicmddata must be provided by board-specific logic. These are
* implementations of the select, status, and cmddata methods of the SPI interface
* defined by struct spi_ops_s (see include/nuttx/spi.h). All other methods
* (including up_spiinitialize()) are provided by common LPC313X logic. To use
* this common SPI logic on your board:
*
* 1. Provide logic in lpc313x_boardinitialize() to configure SPI chip select
* pins.
* 2. Provide lpc313x_spiselect() and lpc313x_spistatus() functions in your
* board-specific logic. These functions will perform chip selection and
* status operations using GPIOs in the way your board is configured.
* 3. Add a calls to up_spiinitialize() in your low level application
* 3. If CONFIG_SPI_CMDDATA is selected in your NuttX configuration, provide
* the lpc313x_spicmddata() function in your board-specific logic. This
* function will perform cmd/data selection operations using GPIOs in the
* way your board is configured.
* 4. Add a calls to up_spiinitialize() in your low level application
* initialization logic
* 4. The handle returned by up_spiinitialize() may then be used to bind the
* 5. The handle returned by up_spiinitialize() may then be used to bind the
* SPI driver to higher level logic (e.g., calling
* mmcsd_spislotinitialize(), for example, will bind the SPI driver to
* the SPI MMC/SD driver).
@ -198,6 +202,9 @@ struct spi_dev_s;
enum spi_dev_e;
EXTERN void lpc313x_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
EXTERN uint8_t lpc313x_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
#ifdef CONFIG_SPI_CMDDATA
EXTERN int lpc313x_spicmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
#endif
/************************************************************************************
* Name: lpc313x_usbpullup

3
arch/arm/src/lpc313x/lpc313x_spi.c
View File

@ -145,6 +145,9 @@ static const struct spi_ops_s g_spiops =
.setmode = spi_setmode,
.setbits = spi_setbits,
.status = spi_status,
#ifdef CONFIG_SPI_CMDDATA
.cmddata = lpc313x_spicmddata,
#endif
.send = spi_send,
#ifdef CONFIG_SPI_EXCHANGE
.exchange = spi_exchange,

25
arch/arm/src/stm32/stm32_internal.h
View File

@ -1,7 +1,7 @@
/************************************************************************************
* arch/arm/src/stm32/stm32_internal.h
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@ -445,21 +445,25 @@ EXTERN int stm32_ethinitialize(int intf);
* Name: stm32_spi1/2/3select and stm32_spi1/2/3status
*
* Description:
* The external functions, stm32_spi1/2/3select and stm32_spi1/2/3status must be
* provided by board-specific logic. They are implementations of the select
* and status methods of the SPI interface defined by struct spi_ops_s (see
* include/nuttx/spi.h). All other methods (including up_spiinitialize())
* are provided by common STM32 logic. To use this common SPI logic on your
* board:
* The external functions, stm32_spi1/2/3select, stm32_spi1/2/3status, and
* stm32_spi1/2/3cmddata must be provided by board-specific logic. These are
* implementations of the select, status, and cmddata methods of the SPI interface
* defined by struct spi_ops_s (see include/nuttx/spi.h). All other methods
* (including up_spiinitialize()) are provided by common STM32 logic. To use this
* common SPI logic on your board:
*
* 1. Provide logic in stm32_boardinitialize() to configure SPI chip select
* pins.
* 2. Provide stm32_spi1/2/3select() and stm32_spi1/2/3status() functions in your
* board-specific logic. These functions will perform chip selection and
* status operations using GPIOs in the way your board is configured.
* 3. Add a calls to up_spiinitialize() in your low level application
* 3. If CONFIG_SPI_CMDDATA is defined in your NuttX configuration file, then
* provide stm32_spi1/2/3cmddata() functions in your board-specific logic.
* These functions will perform cmd/data selection operations using GPIOs in the
* way your board is configured.
* 4. Add a calls to up_spiinitialize() in your low level application
* initialization logic
* 4. The handle returned by up_spiinitialize() may then be used to bind the
* 5. The handle returned by up_spiinitialize() may then be used to bind the
* SPI driver to higher level logic (e.g., calling
* mmcsd_spislotinitialize(), for example, will bind the SPI driver to
* the SPI MMC/SD driver).
@ -470,10 +474,13 @@ struct spi_dev_s;
enum spi_dev_e;
EXTERN void stm32_spi1select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
EXTERN uint8_t stm32_spi1status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
EXTERN int stm32_spi1cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
EXTERN void stm32_spi2select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
EXTERN uint8_t stm32_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
EXTERN int stm32_spi2cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
EXTERN void stm32_spi3select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
EXTERN uint8_t stm32_spi3status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
EXTERN int stm32_spi3cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
/************************************************************************************
* Name: stm32_usbpullup

9
arch/arm/src/stm32/stm32_spi.c
View File

@ -209,6 +209,9 @@ static const struct spi_ops_s g_sp1iops =
.setmode = spi_setmode,
.setbits = spi_setbits,
.status = stm32_spi1status,
#ifdef CONFIG_SPI_CMDDATA
.cmddata = stm32_spi1cmddata,
#endif
.send = spi_send,
#ifdef CONFIG_SPI_EXCHANGE
.exchange = spi_exchange,
@ -245,6 +248,9 @@ static const struct spi_ops_s g_sp2iops =
.setmode = spi_setmode,
.setbits = spi_setbits,
.status = stm32_spi2status,
#ifdef CONFIG_SPI_CMDDATA
.cmddata = stm32_spi2cmddata,
#endif
.send = spi_send,
#ifdef CONFIG_SPI_EXCHANGE
.exchange = spi_exchange,
@ -281,6 +287,9 @@ static const struct spi_ops_s g_sp3iops =
.setmode = spi_setmode,
.setbits = spi_setbits,
.status = stm32_spi3status,
#ifdef CONFIG_SPI_CMDDATA
.cmddata = stm32_spi3cmddata,
#endif
.send = spi_send,
#ifdef CONFIG_SPI_EXCHANGE
.exchange = spi_exchange,

3
arch/z80/src/ez80/ez80_spi.c
View File

@ -94,6 +94,9 @@ static const struct spi_ops_s g_spiops =
spi_setmode,
NULL, /* Variable number of bits not implemented */
ez80_spistatus, /* Provided externally by board logic */
#ifdef CONFIG_SPI_CMDDATA
ez80_spicmddata,
#endif
spi_send,
spi_sndblock,
spi_recvblock,

21
arch/z80/src/ez80/ez80f91_spi.h
View File

@ -2,7 +2,7 @@
* arch/z80/src/ez80/ez80f91_spi.h
* arch/z80/src/chip/ez80f91_spi.h
*
* Copyright (C) 2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@ -99,23 +99,28 @@ extern "C" {
* Public Functions
************************************************************************************/
/* The external functions, ez80_spiselect and ez80_spistatus must be provided by
* board-specific logic. The are implementations of the select and status methods
* SPI interface defined by struct spi_ops_s (see include/nuttx/spi.h). All other
* methods (including up_spiinitialize()) are provided by common logic. To use this
* common SPI logic on your board:
/* The external functions, ez80_spiselect, ez80_spistatus, ans ez80_spicmddata must
* be provided by board-specific logic. These are implementations of the select,
* status, and cmddata methods of the SPI interface defined by struct spi_ops_s (see
* include/nuttx/spi.h). All other methods (including up_spiinitialize()) are
* provided by common logic. To use this common SPI logic on your board:
*
* 1. Provide ez80_spiselect() and ez80_spistatus() functions in your board-specific
* logic. This function will perform chip selection and status operations using
* GPIOs in the way your board is configured.
* 2. Add a call to up_spiinitialize() in your low level initialization logic
* 3. The handle returned by up_spiinitialize() may then be used to bind the
* 2. If CONFIG_SPI_CMDDATA is defined in your NuttX configuration, provide the
* ez80_spiscmddata() function in your board-specific logic. This function will
* perform cmd/data selection operations using GPIOs in the way your board is
* configured.
* 3. Add a call to up_spiinitialize() in your low level initialization logic
* 4. The handle returned by up_spiinitialize() may then be used to bind the
* SPI driver to higher level logic (e.g., calling mmcsd_spislotinitialize(),
* for example, will bind the SPI driver to the SPI MMC/SD driver).
*/
EXTERN void ez80_spiselect(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
EXTERN uint8_t ez80_spistatus(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
EXTERN int ez80_spicmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
#undef EXTERN
#ifdef __cplusplus

38
configs/mcu123-lpc214x/src/up_spi.c
View File

@ -129,6 +129,9 @@ static int spi_lock(FAR struct spi_dev_s *dev, bool lock);
static void spi_select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
static uint32_t spi_setfrequency(FAR struct spi_dev_s *dev, uint32_t frequency);
static uint8_t spi_status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
#ifdef CONFIG_SPI_CMDDATA
static int spi_cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
#endif
static uint16_t spi_send(FAR struct spi_dev_s *dev, uint16_t ch);
static void spi_sndblock(FAR struct spi_dev_s *dev, FAR const void *buffer, size_t nwords);
static void spi_recvblock(FAR struct spi_dev_s *dev, FAR void *buffer, size_t nwords);
@ -145,6 +148,9 @@ static const struct spi_ops_s g_spiops =
.select = spi_select,
.setfrequency = spi_setfrequency,
.status = spi_status,
#ifdef CONFIG_SPI_CMDDATA
.cmddata = spi_cmddata,
#endif
.send = spi_send,
.sndblock = spi_sndblock,
.recvblock = spi_recvblock,
@ -310,6 +316,38 @@ static uint8_t spi_status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
return SPI_STATUS_PRESENT;
}
/****************************************************************************
* Name: spi_cmddata
*
* Description:
* Some devices require and additional out-of-band bit to specify if the
* next word sent to the device is a command or data. This is typical, for
* example, in "9-bit" displays where the 9th bit is the CMD/DATA bit.
* This function provides selection of command or data.
*
* This "latches" the CMD/DATA state. It does not have to be called before
* every word is transferred; only when the CMD/DATA state changes. This
* method is required if CONFIG_SPI_CMDDATA is selected in the NuttX
* configuration
*
* Input Parameters:
* dev - Device-specific state data
* cmd - TRUE: The following word is a command; FALSE: the following words
* are data.
*
* Returned Value:
* OK unless an error occurs. Then a negated errno value is returned
*
****************************************************************************/
#ifdef CONFIG_SPI_CMDDATA
static int spi_cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
{
# error "spi_cmddata not implemented"
return -ENOSYS;
}
#endif
/****************************************************************************
* Name: spi_send
*

38
configs/olimex-strp711/src/up_spi.c
View File

@ -396,6 +396,9 @@ static int spi_lock(FAR struct spi_dev_s *dev, bool lock);
static void spi_select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool selected);
static uint32_t spi_setfrequency(FAR struct spi_dev_s *dev, uint32_t frequency);
static uint8_t spi_status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
#ifdef CONFIG_SPI_CMDDATA
static int spi_cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
#endif
static uint16_t spi_send(FAR struct spi_dev_s *dev, uint16_t wd);
static void spi_sndblock(FAR struct spi_dev_s *dev, FAR const void *buffer, size_t buflen);
static void spi_recvblock(FAR struct spi_dev_s *dev, FAR void *buffer, size_t buflen);
@ -412,6 +415,9 @@ static const struct spi_ops_s g_spiops =
.select = spi_select,
.setfrequency = spi_setfrequency,
.status = spi_status,
#ifdef CONFIG_SPI_CMDDATA
.cmddata = spi_cmddata,
#endif
.send = spi_send,
.sndblock = spi_sndblock,
.recvblock = spi_recvblock,
@ -702,6 +708,38 @@ static uint8_t spi_status(FAR struct spi_dev_s *dev, enum spi_dev_e devid)
return ret;
}
/****************************************************************************
* Name: spi_cmddata
*
* Description:
* Some devices require and additional out-of-band bit to specify if the
* next word sent to the device is a command or data. This is typical, for
* example, in "9-bit" displays where the 9th bit is the CMD/DATA bit.
* This function provides selection of command or data.
*
* This "latches" the CMD/DATA state. It does not have to be called before
* every word is transferred; only when the CMD/DATA state changes. This
* method is required if CONFIG_SPI_CMDDATA is selected in the NuttX
* configuration
*
* Input Parameters:
* dev - Device-specific state data
* cmd - TRUE: The following word is a command; FALSE: the following words
* are data.
*
* Returned Value:
* OK unless an error occurs. Then a negated errno value is returned
*
****************************************************************************/
#ifdef CONFIG_SPI_CMDDATA
static int spi_cmddata(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd)
{
# error "spi_cmddata not implemented"
return -ENOSYS;
}
#endif
/****************************************************************************
* Name: spi_send
*

31
include/nuttx/spi.h
View File

@ -187,6 +187,34 @@
#define SPI_STATUS_PRESENT 0x01 /* Bit 0=1: MMC/SD card present */
#define SPI_STATUS_WRPROTECTED 0x02 /* Bit 1=1: MMC/SD card write protected */
/****************************************************************************
* Name: SPI_CMDDATA
*
* Description:
* Some devices require and additional out-of-band bit to specify if the
* next word sent to the device is a command or data. This is typical, for
* example, in "9-bit" displays where the 9th bit is the CMD/DATA bit.
* This function provides selection of command or data.
*
* This "latches" the CMD/DATA state. It does not have to be called before
* every word is transferred; only when the CMD/DATA state changes. This
* method is required if CONFIG_SPI_CMDDATA is selected in the NuttX
* configuration
*
* Input Parameters:
* dev - Device-specific state data
* cmd - TRUE: The following word is a command; FALSE: the following words
* are data.
*
* Returned Value:
* OK unless an error occurs. Then a negated errno value is returned
*
****************************************************************************/
#ifndef CONFIG_SPI_CMDDATA
# define SPI_CMDDATA(d,id,cmd) ((d)->ops->cmddata(d,id,cmd))
#endif
/****************************************************************************
* Name: SPI_SEND
*
@ -348,6 +376,9 @@ struct spi_ops_s
void (*setmode)(FAR struct spi_dev_s *dev, enum spi_mode_e mode);
void (*setbits)(FAR struct spi_dev_s *dev, int nbits);
uint8_t (*status)(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
#ifndef CONFIG_SPI_CMDDATA
int (*cmddata)(FAR struct spi_dev_s *dev, enum spi_dev_e devid, bool cmd);
#endif
uint16_t (*send)(FAR struct spi_dev_s *dev, uint16_t wd);
#ifdef CONFIG_SPI_EXCHANGE
void (*exchange)(FAR struct spi_dev_s *dev, FAR const void *txbuffer,