diff options
Diffstat (limited to 'nuttx/include/nuttx/spi.h')
| -rw-r--r-- | nuttx/include/nuttx/spi.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/nuttx/include/nuttx/spi.h b/nuttx/include/nuttx/spi.h index c5a9d0ff3..bd55ec5e2 100644 --- a/nuttx/include/nuttx/spi.h +++ b/nuttx/include/nuttx/spi.h @@ -49,14 +49,16 @@ /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ - /* Configuration ************************************************************/ - /* CONFIG_SPI_OWNBUS - Set if there is only one active device on the SPI bus. * No locking or SPI configuration will be performed. It is not necessary * for clients to lock, re-configure, etc.. * CONFIG_SPI_EXCHANGE - Driver supports a single exchange method * (vs a recvblock() and sndblock ()methods). + * CONFIG_SPI_CMDDATA - Devices on the SPI bus require out-of-band support + * to distinguish command transfers from data transfers. Such devices + * will often support either 9-bit SPI (yech) or 8-bit SPI and a GPIO + * output that selects between command and data. */ /* Access macros ************************************************************/ |