From 0e24b0de612ad596103e4e01d250f0be12278783 Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Mon, 14 Mar 2011 20:50:46 +0000
Subject: Add apps/poweroff lpc17 hardware handshake

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3380 42af7a65-404d-4744-a932-0658087f49c3
---
 nuttx/arch/arm/src/lpc17xx/lpc17_serial.c | 16 ++++++++++++++--
 nuttx/arch/arm/src/lpc17xx/lpc17_serial.h |  9 +++++++++
 2 files changed, 23 insertions(+), 2 deletions(-)

(limited to 'nuttx/arch/arm/src/lpc17xx')

diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_serial.c b/nuttx/arch/arm/src/lpc17xx/lpc17_serial.c
index d58ce7c03..63687038f 100755
--- a/nuttx/arch/arm/src/lpc17xx/lpc17_serial.c
+++ b/nuttx/arch/arm/src/lpc17xx/lpc17_serial.c
@@ -664,13 +664,15 @@ static inline void lpc17_uart1config(uint32_t clkdiv)
 
   lpc17_configgpio(GPIO_UART1_TXD);
   lpc17_configgpio(GPIO_UART1_RXD);
-#ifdef CONFIG_UART0_FLOWCONTROL
+#ifdef CONFIG_UART1_FLOWCONTROL
   lpc17_configgpio(GPIO_UART1_CTS);
+  lpc17_configgpio(GPIO_UART1_RTS);
   lpc17_configgpio(GPIO_UART1_DCD);
   lpc17_configgpio(GPIO_UART1_DSR);
   lpc17_configgpio(GPIO_UART1_DTR);
+#ifdef CONFIG_UART1_RINGINDICATOR
   lpc17_configgpio(GPIO_UART1_RI);
-  lpc17_configgpio(GPIO_UART1_RTS);
+#endif
 #endif
   irqrestore(flags);
 };
@@ -849,6 +851,16 @@ static int up_setup(struct uart_dev_s *dev)
 
   up_serialout(priv, LPC17_UART_FCR_OFFSET,
                (UART_FCR_RXTRIGGER_8|UART_FCR_TXRST|UART_FCR_RXRST|UART_FCR_FIFOEN));
+
+  /* Enable Auto-RTS and Auto-CS Flow Control in the Modem Control Register */
+  
+#ifdef CONFIG_UART1_FLOWCONTROL
+  if (priv->uartbase == LPC17_UART1_BASE)
+    {
+      up_serialout(priv, LPC17_UART_MCR_OFFSET, (UART_MCR_RTSEN|UART_MCR_CTSEN));
+    }
+#endif
+
 #endif
   return OK;
 }
diff --git a/nuttx/arch/arm/src/lpc17xx/lpc17_serial.h b/nuttx/arch/arm/src/lpc17xx/lpc17_serial.h
index 3446c4997..9fca96219 100755
--- a/nuttx/arch/arm/src/lpc17xx/lpc17_serial.h
+++ b/nuttx/arch/arm/src/lpc17xx/lpc17_serial.h
@@ -92,6 +92,15 @@
 #  undef HAVE_CONSOLE
 #endif
 
+/* Check UART flow control (Only supported by UART1) */
+
+# undef CONFIG_UART0_FLOWCONTROL
+# undef CONFIG_UART2_FLOWCONTROL
+# undef CONFIG_UART3_FLOWCONTROL
+#ifndef CONFIG_LPC17_UART1
+# undef CONFIG_UART1_FLOWCONTROL
+#endif
+
 /* We cannot allow the DLM/DLL divisor to become to small or will will lose too
  * much accuracy.  This following is a "fudge factor" that represents the minimum
  * value of the divisor that we will permit.
-- 
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