Final integration of microSD

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1830 42af7a65-404d-4744-a932-0658087f49c3

configs/README.txt

@@ -139,7 +139,6 @@ defconfig -- This is a configuration file similar to the Linux
 		CONFIG_DRAM_START - The start address of DRAM (physical)
 		CONFIG_DRAM_VSTART - The start address of DRAM (virtual)
 
-
 	General build options
 
 		CONFIG_RRLOAD_BINARY - make the rrload binary format used with

configs/eagle100/README.txt

@@ -205,6 +205,10 @@ Eagle100-specific Configuration Options
 	CONFIG_SSI_POLLWAIT - Select to disable interrupt driven SSI support.
 	  Poll-waiting is recommended if the interrupt rate would be to
 	  high in the interrupt driven case.
+	CONFIG_SSI_TXLIMIT - Write this many words to the Tx FIFO before
+	  emptying the Rx FIFO.  If the SPI frequency is high and this
+	  value is large, then larger values of this setting may cause
+	  Rx FIFO overrun errors.  Default: half of the Tx FIFO size (4).
 
 	CONFIG_LM3S_ETHERNET - This must be set (along with CONFIG_NET)
 	  to build the LM3S Ethernet driver

configs/eagle100/httpd/defconfig

@@ -126,10 +126,17 @@ CONFIG_UART1_2STOP=0
 # CONFIG_SSIn_DISABLE - select to disable all support for
 #   the SSI
 # CONFIG_SSI_POLLWAIT - Select to disable interrupt driven SSI support
+#   Poll-waiting is recommended if the interrupt rate would be to
+#   high in the interrupt driven case.
+# CONFIG_SSI_TXLIMIT - Write this many words to the Tx FIFO before
+#   emptying the Rx FIFO.  If the SPI frequency is high and this
+#   value is large, then larger values of this setting may cause
+#   Rx FIFO overrun errors.  Default: half of the Tx FIFO size (4).
 #
 CONFIG_SSI0_DISABLE=n
 CONFIG_SSI1_DISABLE=y
 CONFIG_SSI_POLLWAIT=y
+#CONFIG_SSI_TXLIMIT=4
 
 #
 # LM3S6918 specific serial device driver settings

configs/eagle100/nettest/defconfig

@@ -126,10 +126,17 @@ CONFIG_UART1_2STOP=0
 # CONFIG_SSIn_DISABLE - select to disable all support for
 #   the SSI
 # CONFIG_SSI_POLLWAIT - Select to disable interrupt driven SSI support
+#   Poll-waiting is recommended if the interrupt rate would be to
+#   high in the interrupt driven case.
+# CONFIG_SSI_TXLIMIT - Write this many words to the Tx FIFO before
+#   emptying the Rx FIFO.  If the SPI frequency is high and this
+#   value is large, then larger values of this setting may cause
+#   Rx FIFO overrun errors.  Default: half of the Tx FIFO size (4).
 #
 CONFIG_SSI0_DISABLE=n
 CONFIG_SSI1_DISABLE=y
 CONFIG_SSI_POLLWAIT=y
+#CONFIG_SSI_TXLIMIT=4
 
 #
 # LM3S6918 specific serial device driver settings

configs/eagle100/nsh/defconfig

@@ -126,10 +126,17 @@ CONFIG_UART1_2STOP=0
 # CONFIG_SSIn_DISABLE - select to disable all support for
 #   the SSI
 # CONFIG_SSI_POLLWAIT - Select to disable interrupt driven SSI support
+#   Poll-waiting is recommended if the interrupt rate would be to
+#   high in the interrupt driven case.
+# CONFIG_SSI_TXLIMIT - Write this many words to the Tx FIFO before
+#   emptying the Rx FIFO.  If the SPI frequency is high and this
+#   value is large, then larger values of this setting may cause
+#   Rx FIFO overrun errors.  Default: half of the Tx FIFO size (4).
 #
 CONFIG_SSI0_DISABLE=n
 CONFIG_SSI1_DISABLE=y
 CONFIG_SSI_POLLWAIT=y
+#CONFIG_SSI_TXLIMIT=4
 
 #
 # LM3S6918 specific serial device driver settings

configs/eagle100/ostest/defconfig

@@ -126,10 +126,17 @@ CONFIG_UART1_2STOP=0
 # CONFIG_SSIn_DISABLE - select to disable all support for
 #   the SSI
 # CONFIG_SSI_POLLWAIT - Select to disable interrupt driven SSI support
+#   Poll-waiting is recommended if the interrupt rate would be to
+#   high in the interrupt driven case.
+# CONFIG_SSI_TXLIMIT - Write this many words to the Tx FIFO before
+#   emptying the Rx FIFO.  If the SPI frequency is high and this
+#   value is large, then larger values of this setting may cause
+#   Rx FIFO overrun errors.  Default: half of the Tx FIFO size (4).
 #
 CONFIG_SSI0_DISABLE=n
 CONFIG_SSI1_DISABLE=y
 CONFIG_SSI_POLLWAIT=y
+#CONFIG_SSI_TXLIMIT=4
 
 #
 # LM3S6918 specific serial device driver settings