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Add SPI method to set SCLK mode

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1669 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2009-03-29 21:14:34 +00:00
parent 7b487e8dc9
commit eb7cadce8f
7 changed files with 102 additions and 16 deletions
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include/nuttx/spi.h
+33 -5
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@@ -1,7 +1,7 @@
/****************************************************************************
* drivers/usbdev/spi.h
* include/nuttx/spi.h
*
* Copyright(C) 2008 Gregory Nutt. All rights reserved.
* Copyright(C) 2008-2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@@ -87,6 +87,23 @@
#define SPI_SETFREQUENCY(d,f) ((d)->ops->setfrequency(d,f))
/****************************************************************************
* Name: SPI_SETMODE
*
* Description:
* Set the SPI mode. Optional. See enum spi_mode_e for mode definitions
*
* Input Parameters:
* dev - Device-specific state data
* mode - The SPI mode requested
*
* Returned Value:
* none
*
****************************************************************************/
#define SPI_SETMODE(d,m) ((d)->ops->mode(d,m))
/****************************************************************************
* Name: SPI_STATUS
*
@@ -198,21 +215,32 @@ typedef void (*mediachange_t)(void *arg);
* which is selected or de-seleted.
*/
enum spidev_e
enum spi_dev_e
{
SPIDEV_NONE = 0, /* Not a valid value */
SPIDEV_MMCSD, /* Select SPI MMC/SD device */
SPIDEV_ETHERNET /* Select SPI ethernet device */
};
/* Certain SPI devices may required differnt clocking modes */
enum spi_mode_e
{
SPIDEV_MODE0 = 0, /* CPOL=0 CHPHA=0 */
SPIDEV_MODE1, /* CPOL=0 CHPHA=1 */
SPIDEV_MODE2, /* CPOL=1 CHPHA=0 */
SPIDEV_MODE3 /* CPOL=1 CHPHA=1 */
};
/* The SPI vtable */
struct spi_dev_s;
struct spi_ops_s
{
void (*select)(FAR struct spi_dev_s *dev, enum spidev_e devid, boolean selected);
void (*select)(FAR struct spi_dev_s *dev, enum spi_dev_e devid, boolean selected);
uint32 (*setfrequency)(FAR struct spi_dev_s *dev, uint32 frequency);
ubyte (*status)(FAR struct spi_dev_s *dev, enum spidev_e devid);
void (*setmode)(FAR struct spi_dev_s *dev, enum spi_mode_e mode);
ubyte (*status)(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
ubyte (*sndbyte)(FAR struct spi_dev_s *dev, ubyte ch);
void (*sndblock)(FAR struct spi_dev_s *dev, FAR const ubyte *buffer, size_t buflen);
void (*recvblock)(FAR struct spi_dev_s *dev, FAR ubyte *buffer, size_t buflen);