Add infrastructure to support RS-485 on the LPC43xx (logic still incomplete)

git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@4958 7fd9a85b-ad96-42d3-883c-3090e2eb8679
2026-11-01 12:01:38 +08:00 · 2012-07-20 16:58:39 +00:00
parent bfeaf56050
commit 3dd3e950cb
6 changed files with 106 additions and 2 deletions
@@ -716,7 +716,7 @@ LPC4330-Xplorer Configuration Options
      CONFIG_LPC43_USB1_ULPI=y
      CONFIG_LPC43_WWDT=y

-  LPC43xx specific device driver settings
+  LPC43xx specific U[S]ART device driver settings

    CONFIG_U[S]ARTn_SERIAL_CONSOLE - selects the UARTn for the
       console and ttys0 (default is the USART0).
@@ -729,6 +729,10 @@ LPC4330-Xplorer Configuration Options
    CONFIG_U[S]ARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
    CONFIG_U[S]ARTn_2STOP - Two stop bits

+    CONFIG_USART_RS485MODE - Support LPC43xx USART0,2,3 RS485 mode
+      ioctls (TIOCSRS485 and TIOCGRS485) to enable and disable
+      RS-485 mode.
+  
  LPC43xx specific CAN device driver settings.  These settings all
  require CONFIG_CAN:

@@ -227,6 +227,13 @@ CONFIG_UART1_2STOP=0
 CONFIG_USART2_2STOP=0
 CONFIG_USART3_2STOP=0

+#
+# CONFIG_USART_RS485MODE - Support LPC43xx USART0,2,3 RS485 mode
+#   ioctls (TIOCSRS485 and TIOCGRS485) to enable and disable
+#   RS-485 mode.
+#
+CONFIG_USART_RS485MODE=n
+
 #
 # LPC43xx specific PHY/Ethernet device driver settings
 #
@@ -227,6 +227,13 @@ CONFIG_UART1_2STOP=0
 CONFIG_USART2_2STOP=0
 CONFIG_USART3_2STOP=0

+#
+# CONFIG_USART_RS485MODE - Support LPC43xx USART0,2,3 RS485 mode
+#   ioctls (TIOCSRS485 and TIOCGRS485) to enable and disable
+#   RS-485 mode.
+#
+CONFIG_USART_RS485MODE=n
+
 #
 # LPC43xx specific PHY/Ethernet device driver settings
 #