Extend SPI interface to better handle multiple devices on same SPI bus

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2162 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 0 insertions, 17 deletions

diff --git a/nuttx/arch/arm/src/stm32/stm32_internal.h b/nuttx/arch/arm/src/stm32/stm32_internal.h
index e5d429be7..58be75b61 100755
--- a/nuttx/arch/arm/src/stm32/stm32_internal.h
+++ b/nuttx/arch/arm/src/stm32/stm32_internal.h
@@ -610,9 +610,6 @@ EXTERN int stm32_ethinitialize(int intf);
  *   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.
- *      The select() methods must call stm32_spitake() when the chip is selected
- *      and stm32_spigive() when the chip is deselected.  This assures mutually
- *      exclusive access to the SPI for the duration while a chip is selected.
  *   3. 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
@@ -631,20 +628,6 @@ EXTERN ubyte stm32_spi2status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
 EXTERN void  stm32_spi3select(FAR struct spi_dev_s *dev, enum spi_dev_e devid, boolean selected);
 EXTERN ubyte stm32_spi3status(FAR struct spi_dev_s *dev, enum spi_dev_e devid);
 
-/************************************************************************************
- * Name: stm32_spitake() and stm32_spigive()
- *
- * Description:
- *   The stm32_spi1/2/3select() and stm32_spi1/2/3status() methods must call
- *   stm32_spitake() when the chip is selected and stm32_spigive() when the chip is
- *   deselected.  This assures mutually exclusive access to the SPI for the duration
- *   while a chip is selected.
- *
- ************************************************************************************/
-
-EXTERN void stm32_spitake(FAR struct spi_dev_s *dev);
-EXTERN void stm32_spigive(FAR struct spi_dev_s *dev);
-
 #undef EXTERN
 #if defined(__cplusplus)
 }