More LPC43xx logic

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4906 42af7a65-404d-4744-a932-0658087f49c3

13 files changed, 1171 insertions, 45 deletions

diff --git a/nuttx/arch/arm/src/lpc43xx/Make.defs b/nuttx/arch/arm/src/lpc43xx/Make.defs
index ea86ed1a4..33fbbb5b5 100644
--- a/nuttx/arch/arm/src/lpc43xx/Make.defs
+++ b/nuttx/arch/arm/src/lpc43xx/Make.defs
@@ -33,35 +33,39 @@
 #
 ############################################################################
 
-HEAD_ASRC	= 
+HEAD_ASRC  = 
 
-CMN_ASRCS	= up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S
-CMN_CSRCS	= up_assert.c up_blocktask.c up_copystate.c \
-		  up_createstack.c up_mdelay.c up_udelay.c up_exit.c \
-		  up_initialize.c up_initialstate.c up_interruptcontext.c \
-		  up_memfault.c up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \
-		  up_releasepending.c up_releasestack.c up_reprioritizertr.c \
-		  up_schedulesigaction.c up_sigdeliver.c up_unblocktask.c \
-		  up_usestack.c up_doirq.c up_hardfault.c up_svcall.c
+CMN_ASRCS  = up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S
+CMN_CSRCS += up_assert.c up_blocktask.c up_copystate.c
+CMN_CSRCS += up_createstack.c up_mdelay.c up_udelay.c up_exit.c
+CMN_CSRCS += up_initialize.c up_initialstate.c up_interruptcontext.c
+CMN_CSRCS += up_memfault.c up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c
+CMN_CSRCS += up_releasepending.c up_releasestack.c up_reprioritizertr.c
+CMN_CSRCS += up_schedulesigaction.c up_sigdeliver.c up_unblocktask.c
+CMN_CSRCS += up_usestack.c up_doirq.c up_hardfault.c up_svcall.c
 
 ifeq ($(CONFIG_ARMV7M_CMNVECTOR),y)
-CMN_ASRCS	+= up_exception.S
-CMN_CSRCS	+= up_vectors.c
+CMN_ASRCS += up_exception.S
+CMN_CSRCS += up_vectors.c
 endif
 
 ifeq ($(CONFIG_DEBUG_STACK),y)
-CMN_CSRCS	+= up_checkstack.c
+CMN_CSRCS += up_checkstack.c
 endif
 
 ifeq ($(CONFIG_ARCH_FPU),y)
-CMN_ASRCS	+= up_fpu.S
+CMN_ASRCS += up_fpu.S
 endif
 
-CHIP_ASRCS	= 
-CHIP_CSRCS	= lpc43_irq.c lpc43_start.c
+CHIP_ASRCS  = 
+CHIP_CSRCS  = lpc43_clrpend.c lpc43_gpio.c lpc43_irq.c lpc43_lowputc.c
+CHIP_CSRCS += lpc43_pinconfig.c lpc43_start.c lpc43_timerisr.c
 
 ifneq ($(CONFIG_IDLE_CUSTOM),y)
-CHIP_CSRCS	+= lpc43_idle.c
+CHIP_CSRCS += lpc43_idle.c
 endif
 
+ifneq ($(CONFIG_DEBUG),y)
+CHIP_CSRCS += lpc43_debug.c
+endif
 
diff --git a/nuttx/arch/arm/src/lpc43xx/lpc43_clrpend.c b/nuttx/arch/arm/src/lpc43xx/lpc43_clrpend.c
new file mode 100644
index 000000000..ca7189103
--- /dev/null
+++ b/nuttx/arch/arm/src/lpc43xx/lpc43_clrpend.c
@@ -0,0 +1,99 @@
+/****************************************************************************
+ * arch/arm/src/lpc43/lpc43_clrpend.c
+ * arch/arm/src/chip/lpc43_clrpend.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <arch/irq.h>
+
+#include "nvic.h"
+#include "up_arch.h"
+
+#include "lpc43_irq.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: lpc43_clrpend
+ *
+ * Description:
+ *   Clear a pending interrupt at the NVIC.  This does not seem to be required
+ *   for most interrupts.  Don't know why... but the LPC4366 Ethernet EMAC
+ *   interrupt definitely needs it!
+ *
+ *   This function is logically a part of lpc43_irq.c, but I will keep it in
+ *   a separate file so that it will not increase the footprint on LPC43xx
+ *   platforms that do not need this function.
+ *
+ ****************************************************************************/
+
+void lpc43_clrpend(int irq)
+{
+  /* Check for external interrupt */
+
+  if (irq >= LPC43_IRQ_EXTINT)
+    {
+      if (irq < (LPC43_IRQ_EXTINT + 32))
+        {
+          putreg32(1 << (irq - LPC43_IRQ_EXTINT), NVIC_IRQ0_31_CLRPEND);
+        }
+      else if (irq < LPC43M4_IRQ_NIRQS)
+        {
+          putreg32(1 << (irq - LPC43_IRQ_EXTINT - 32), NVIC_IRQ32_63_CLRPEND);
+        }
+    }
+}
diff --git a/nuttx/arch/arm/src/lpc43xx/lpc43_debug.c b/nuttx/arch/arm/src/lpc43xx/lpc43_debug.c
new file mode 100644
index 000000000..94237ab09
--- /dev/null
+++ b/nuttx/arch/arm/src/lpc43xx/lpc43_debug.c
@@ -0,0 +1,94 @@
+/****************************************************************************
+ *  arch/arm/src/lpc43/lpc43_pinconfig.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/board/board.h>
+#include <nuttx/config.h>
+
+#include <nuttx/arch.h>
+#include <errno.h>
+
+#include "lpc43_pinconfig.h"
+
+#ifdef CONFIG_DEBUG
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+/****************************************************************************
+ * Function:  lpc43_dumppinconfig
+ *
+ * Description:
+ *   Dump all pin configuration registers associated with the provided pin
+ *   configuration
+ *
+ ****************************************************************************/
+
+int lpc43_dumppinconfig(uint32_t pinconf, const char *msg)
+{
+#warning "Missing logic"
+  return -ENOSYS;
+}
+
+/********************************************************************************************
+ * Function:  lpc43_dumpgpio
+ *
+ * Description:
+ *   Dump all pin configuration registers associated with the provided base address
+ *
+ ********************************************************************************************/
+
+int lpc43_dumpgpio(uint16_t gpiocfg, const char *msg)
+{
+#warning "Missing logic"
+  return -ENOSYS;
+}
+
+#endif /* CONFIG_DEBUG */
diff --git a/nuttx/arch/arm/src/lpc43xx/lpc43_gpio.c b/nuttx/arch/arm/src/lpc43xx/lpc43_gpio.c
new file mode 100644
index 000000000..36983b8ec
--- /dev/null
+++ b/nuttx/arch/arm/src/lpc43xx/lpc43_gpio.c
@@ -0,0 +1,115 @@
+/****************************************************************************
+ *  arch/arm/src/lpc43/lpc43_gpio.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/board/board.h>
+#include <nuttx/config.h>
+
+#include <nuttx/arch.h>
+#include <errno.h>
+
+#include "lpc43_pinconfig.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: lpc43_gpioconfig
+ *
+ * Description:
+ *   Configure a GPIO based on bit-encoded description of the pin.
+ *
+ * Returned Value:
+ *   OK on success; A negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int lpc43_gpioconfig(uint16_t gpiocfg)
+{
+#warning "Missing logic"
+  return -ENOSYS;
+}
+
+/****************************************************************************
+ * Name: lpc43_gpiowrite
+ *
+ * Description:
+ *   Write one or zero to the selected GPIO pin
+ *
+ * Returned Value:
+ *   None
+ *
+ ****************************************************************************/
+
+void lpc43_gpiowrite(uint16_t gpiocfg, bool value)
+{
+#warning "Missing logic"
+}
+
+/****************************************************************************
+ * Name: lpc43_gpioread
+ *
+ * Description:
+ *   Read one or zero from the selected GPIO pin
+ *
+ * Returned Value:
+ *   The boolean state of the input pin
+ *
+ ****************************************************************************/
+
+bool lpc43_gpioread(uint16_t gpiocfg)
+{
+#warning "Missing logic"
+  return false;
+}
+
+
+
diff --git a/nuttx/arch/arm/src/lpc43xx/lpc43_gpio.h b/nuttx/arch/arm/src/lpc43xx/lpc43_gpio.h
index 1ceb3f4f0..d7615efa0 100644
--- a/nuttx/arch/arm/src/lpc43xx/lpc43_gpio.h
+++ b/nuttx/arch/arm/src/lpc43xx/lpc43_gpio.h
@@ -249,11 +249,11 @@ EXTERN const uint32_t g_gpiobase[NUM_GPIO_PORTS];
  * Returned Value:
  *   OK on success; A negated errno value on failure.
  *
- ************************************************************************************/
+ ********************************************************************************************/
 
 EXTERN int lpc43_gpioconfig(uint16_t gpiocfg);
 
-/************************************************************************************
+/********************************************************************************************
  * Name: lpc43_gpiowrite
  *
  * Description:
@@ -262,11 +262,11 @@ EXTERN int lpc43_gpioconfig(uint16_t gpiocfg);
  * Returned Value:
  *   None
  *
- ************************************************************************************/
+ ********************************************************************************************/
 
 EXTERN void lpc43_gpiowrite(uint16_t gpiocfg, bool value);
 
-/************************************************************************************
+/********************************************************************************************
  * Name: lpc43_gpioread
  *
  * Description:
@@ -275,11 +275,11 @@ EXTERN void lpc43_gpiowrite(uint16_t gpiocfg, bool value);
  * Returned Value:
  *   The boolean state of the input pin
  *
- ************************************************************************************/
+ ********************************************************************************************/
 
 EXTERN bool lpc43_gpioread(uint16_t gpiocfg);
 
-/************************************************************************************
+/********************************************************************************************
  * Name: lpc43_gpioattach
  *
  * Description:
@@ -296,17 +296,17 @@ EXTERN bool lpc43_gpioread(uint16_t gpiocfg);
  *  for example, be used to restore the previous handler when multiple handlers are
  *  used.
  *
- ************************************************************************************/
+ ********************************************************************************************/
 
 EXTERN xcpt_t lpc43_gpioattach(uint16_t gpiocfg, xcpt_t func);
 
-/************************************************************************************
+/********************************************************************************************
  * Function:  lpc43_dumpgpio
  *
  * Description:
  *   Dump all pin configuration registers associated with the provided base address
  *
- ************************************************************************************/
+ ********************************************************************************************/
 
 #ifdef CONFIG_DEBUG
 EXTERN int lpc43_dumpgpio(uint16_t gpiocfg, const char *msg);
diff --git a/nuttx/arch/arm/src/lpc43xx/lpc43_irq.c b/nuttx/arch/arm/src/lpc43xx/lpc43_irq.c
index 40c1496f8..73a0c92e9 100644
--- a/nuttx/arch/arm/src/lpc43xx/lpc43_irq.c
+++ b/nuttx/arch/arm/src/lpc43xx/lpc43_irq.c
@@ -53,6 +53,8 @@
 #include "os_internal.h"
 #include "up_internal.h"
 
+#include "lpc43_irq.h"
+
 /****************************************************************************
  * Definitions
  ****************************************************************************/
diff --git a/nuttx/arch/arm/src/lpc43xx/lpc43_irq.h b/nuttx/arch/arm/src/lpc43xx/lpc43_irq.h
new file mode 100644
index 000000000..201081169
--- /dev/null
+++ b/nuttx/arch/arm/src/lpc43xx/lpc43_irq.h
@@ -0,0 +1,92 @@
+/****************************************************************************
+ * arch/arm/src/lpc43xx/lpc43_irq.h
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_LPC43XX_LPC43_IRQ_H
+#define __ARCH_ARM_SRC_LPC43XX_LPC43_IRQ_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C" {
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: lpc43_clrpend
+ *
+ * Description:
+ *   Clear a pending interrupt at the NVIC.  This does not seem to be
+ *   required for most interrupts.
+ *
+ ****************************************************************************/
+
+EXTERN void lpc43_clrpend(int irq);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* __ARCH_ARM_SRC_LPC43XX_LPC43_IRQ_H */
diff --git a/nuttx/arch/arm/src/lpc43xx/lpc43_lowputc.c b/nuttx/arch/arm/src/lpc43xx/lpc43_lowputc.c
new file mode 100644
index 000000000..2e45f9855
--- /dev/null
+++ b/nuttx/arch/arm/src/lpc43xx/lpc43_lowputc.c
@@ -0,0 +1,422 @@
+/**************************************************************************
+ * arch/arm/src/lpc43xx/lpc43_lowputc.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ **************************************************************************/
+
+/**************************************************************************
+ * Included Files
+ **************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+
+#include <arch/irq.h>
+#include <arch/board/board.h>
+
+#include "up_internal.h"
+#include "up_arch.h"
+
+#include "chip.h"
+#include "lpc43_config.h"
+#include "lpc43_pinconfig.h"
+#include "chip/lpc43_uart.h"
+
+#include "lpc43_lowputc.h"
+
+/**************************************************************************
+ * Private Definitions
+ **************************************************************************/
+     
+/* Select UART parameters for the selected console */
+
+#if defined(CONFIG_USART0_SERIAL_CONSOLE)
+#  define CONSOLE_BASE     LPC43_USART0_BASE
+#  define CONSOLE_BAUD     CONFIG_USART0_BAUD
+#  define CONSOLE_BITS     CONFIG_USART0_BITS
+#  define CONSOLE_PARITY   CONFIG_USART0_PARITY
+#  define CONSOLE_2STOP    CONFIG_USART0_2STOP
+#elif defined(CONFIG_UART1_SERIAL_CONSOLE)
+#  define CONSOLE_BASE     LPC43_UART1_BASE
+#  define CONSOLE_BAUD     CONFIG_UART1_BAUD
+#  define CONSOLE_BITS     CONFIG_UART1_BITS
+#  define CONSOLE_PARITY   CONFIG_UART1_PARITY
+#  define CONSOLE_2STOP    CONFIG_UART1_2STOP
+#elif defined(CONFIG_USART2_SERIAL_CONSOLE)
+#  define CONSOLE_BASE     LPC43_USART2_BASE
+#  define CONSOLE_BAUD     CONFIG_USART2_BAUD
+#  define CONSOLE_BITS     CONFIG_USART2_BITS
+#  define CONSOLE_PARITY   CONFIG_USART2_PARITY
+#  define CONSOLE_2STOP    CONFIG_USART2_2STOP
+#elif defined(CONFIG_USART3_SERIAL_CONSOLE)
+#  define CONSOLE_BASE     LPC43_USART3_BASE
+#  define CONSOLE_BAUD     CONFIG_USART3_BAUD
+#  define CONSOLE_BITS     CONFIG_USART3_BITS
+#  define CONSOLE_PARITY   CONFIG_USART3_PARITY
+#  define CONSOLE_2STOP    CONFIG_USART3_2STOP
+#elif defined(HAVE_CONSOLE)
+#  error "No CONFIG_UARTn_SERIAL_CONSOLE Setting"
+#endif
+
+/* Get word length setting for the console */
+
+#if CONSOLE_BITS == 5
+#  define CONSOLE_LCR_WLS UART_LCR_WLS_5BIT
+#elif CONSOLE_BITS == 6
+#  define CONSOLE_LCR_WLS UART_LCR_WLS_6BIT
+#elif CONSOLE_BITS == 7
+#  define CONSOLE_LCR_WLS UART_LCR_WLS_7BIT
+#elif CONSOLE_BITS == 8
+#  define CONSOLE_LCR_WLS UART_LCR_WLS_8BIT
+#elif defined(HAVE_CONSOLE)
+#  error "Invalid CONFIG_UARTn_BITS setting for console "
+#endif
+
+/* Get parity setting for the console */
+
+#if CONSOLE_PARITY == 0
+#  define CONSOLE_LCR_PAR 0
+#elif CONSOLE_PARITY == 1
+#  define CONSOLE_LCR_PAR (UART_LCR_PE|UART_LCR_PS_ODD)
+#elif CONSOLE_PARITY == 2
+#  define CONSOLE_LCR_PAR (UART_LCR_PE|UART_LCR_PS_EVEN)
+#elif CONSOLE_PARITY == 3
+#  define CONSOLE_LCR_PAR (UART_LCR_PE|UART_LCR_PS_STICK1)
+#elif CONSOLE_PARITY == 4
+#  define CONSOLE_LCR_PAR (UART_LCR_PE|UART_LCR_PS_STICK0)
+#elif defined(HAVE_CONSOLE)
+#    error "Invalid CONFIG_UARTn_PARITY setting for CONSOLE"
+#endif
+
+/* Get stop-bit setting for the console and USART0/2/3, UART1 */
+
+#if CONSOLE_2STOP != 0
+#  define CONSOLE_LCR_STOP UART_LCR_STOP
+#else
+#  define CONSOLE_LCR_STOP 0
+#endif
+
+/* LCR and FCR values for the console */
+
+#define CONSOLE_LCR_VALUE (CONSOLE_LCR_WLS | CONSOLE_LCR_PAR | CONSOLE_LCR_STOP)
+#define CONSOLE_FCR_VALUE (UART_FCR_RXTRIGGER_8 | UART_FCR_TXRST |\
+                           UART_FCR_RXRST | UART_FCR_FIFOEN)
+
+/* 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.
+ */
+
+#define UART_MINDL 32
+
+/* Select a CCLK divider to produce the UART PCLK.  The strategy is to select the
+ * smallest divisor that results in an solution within range of the 16-bit
+ * DLM and DLL divisor:
+ *
+ *   BAUD = PCLK / (16 * DL), or
+ *   DL   = PCLK / BAUD / 16
+ *
+ * Where:
+ *
+ *   PCLK = CCLK / divisor
+ *
+ * Ignoring the fractional divider for now.
+ *
+ * Check divisor == 1.  This works if the upper limit is met	
+ *
+ *   DL < 0xffff, or
+ *   PCLK / BAUD / 16 < 0xffff, or
+ *   CCLK / BAUD / 16 < 0xffff, or
+ *   CCLK < BAUD * 0xffff * 16
+ *   BAUD > CCLK / 0xffff / 16
+ *
+ * And the lower limit is met (we can't allow DL to get very close to one).
+ *
+ *   DL >= MinDL
+ *   CCLK / BAUD / 16 >= MinDL, or
+ *   BAUD <= CCLK / 16 / MinDL
+ */
+
+#if CONSOLE_BAUD < (LPC43_CCLK / 16 / UART_MINDL)
+#  define CONSOLE_CCLKDIV  SYSCON_PCLKSEL_CCLK
+#  define CONSOLE_NUMERATOR (LPC43_CCLK)
+
+/* Check divisor == 2.  This works if:
+ *
+ *   2 * CCLK / BAUD / 16 < 0xffff, or
+ *   BAUD > CCLK / 0xffff / 8
+ *
+ * And
+ *
+ *   2 * CCLK / BAUD / 16 >= MinDL, or
+ *   BAUD <= CCLK / 8 / MinDL
+ */
+
+#elif CONSOLE_BAUD < (LPC43_CCLK / 8 / UART_MINDL)
+#  define CONSOLE_CCLKDIV SYSCON_PCLKSEL_CCLK2
+#  define CONSOLE_NUMERATOR (LPC43_CCLK / 2)
+
+/* Check divisor == 4.  This works if:
+ *
+ *   4 * CCLK / BAUD / 16 < 0xffff, or
+ *   BAUD > CCLK / 0xffff / 4
+ *
+ * And
+ *
+ *   4 * CCLK / BAUD / 16 >= MinDL, or
+ *   BAUD <= CCLK / 4 / MinDL 
+ */
+
+#elif CONSOLE_BAUD < (LPC43_CCLK / 4 / UART_MINDL)
+#  define CONSOLE_CCLKDIV SYSCON_PCLKSEL_CCLK4
+#  define CONSOLE_NUMERATOR (LPC43_CCLK / 4)
+
+/* Check divisor == 8.  This works if:
+ *
+ *   8 * CCLK / BAUD / 16 < 0xffff, or
+ *   BAUD > CCLK / 0xffff / 2
+ *
+ * And
+ *
+ *   8 * CCLK / BAUD / 16 >= MinDL, or
+ *   BAUD <= CCLK / 2 / MinDL 
+ */
+
+#else /* if CONSOLE_BAUD < (LPC43_CCLK / 2 / UART_MINDL) */
+#  define CONSOLE_CCLKDIV   SYSCON_PCLKSEL_CCLK8
+#  define CONSOLE_NUMERATOR (LPC43_CCLK /  8)
+#endif
+
+/* Then this is the value to use for the DLM and DLL registers */
+
+#define CONSOLE_DL          (CONSOLE_NUMERATOR / (CONSOLE_BAUD << 4))
+
+/**************************************************************************
+ * Private Types
+ **************************************************************************/
+
+/**************************************************************************
+ * Private Function Prototypes
+ **************************************************************************/
+
+/**************************************************************************
+ * Global Variables
+ **************************************************************************/
+
+/**************************************************************************
+ * Private Variables
+ **************************************************************************/
+
+/**************************************************************************
+ * Private Functions
+ **************************************************************************/
+
+/**************************************************************************
+ * Public Functions
+ **************************************************************************/
+
+/**************************************************************************
+ * Name: up_lowputc
+ *
+ * Description:
+ *   Output one byte on the serial console
+ *
+ **************************************************************************/
+
+void up_lowputc(char ch)
+{
+#if defined HAVE_UART && defined HAVE_CONSOLE
+  /* Wait for the transmitter to be available */
+
+  while ((getreg32(CONSOLE_BASE+LPC43_UART_LSR_OFFSET) & UART_LSR_THRE) == 0);
+
+  /* Send the character */
+
+  putreg32((uint32_t)ch, CONSOLE_BASE+LPC43_UART_THR_OFFSET);
+#endif
+}
+
+/**************************************************************************
+ * Name: lpc43_lowsetup
+ *
+ * Description:
+ *   This performs basic initialization of the UART used for the serial
+ *   console.  Its purpose is to get the console output availabe as soon
+ *   as possible.
+ *
+ *   The USART0/2/3 and UART1 peripherals are configured using the following registers:
+ *   1. Power: In the PCONP register, set bits PCUSART0/1/2/3.
+ *      On reset, USART0 and UART 1 are enabled (PCUSART0 = 1 and PCUART1 = 1)
+ *      and USART2/3 are disabled (PCUART1 = 0 and PCUSART3 = 0).
+ *   2. Peripheral clock: In the PCLKSEL0 register, select PCLK_USART0 and
+ *      PCLK_UART1; in the PCLKSEL1 register, select PCLK_USART2 and PCLK_USART3.
+ *   3. Baud rate: In the LCR register, set bit DLAB = 1. This enables access
+ *      to registers DLL and DLM for setting the baud rate. Also, if needed,
+ *      set the fractional baud rate in the fractional divider 
+ *   4. UART FIFO: Use bit FIFO enable (bit 0) in FCR register to
+ *      enable FIFO.
+ *   5. Pins: Select UART pins through the PINSEL registers and pin modes
+ *      through the PINMODE registers. UART receive pins should not have
+ *      pull-down resistors enabled.
+ *   6. Interrupts: To enable UART interrupts set bit DLAB = 0 in the LCRF
+ *      register. This enables access to IER. Interrupts are enabled
+ *      in the NVIC using the appropriate Interrupt Set Enable register.
+ *   7. DMA: UART transmit and receive functions can operate with the
+ *      GPDMA controller.
+ *
+ **************************************************************************/
+
+void lpc43_lowsetup(void)
+{
+#ifdef HAVE_UART
+  uint32_t regval;
+
+  /* Step 1: Enable power for all console UART and disable power for
+   * other UARTs
+   *
+   * USART0/2/3 clocking and power control:
+   *
+   *    ----------------------------------- -------------- --------------
+   *                                        BASE CLOCK     BRANCH CLOCK
+   *    ----------------------------------- -------------- --------------
+   *    USART0 clock to register interface  BASE_M4_CLK    CLK_M4_USART0
+   *    USART0 peripheral clock (PCLK)      BASE_UART0_CLK CLK_APB0_UART0
+   *    UART1 clock to register interface   BASE_M4_CLK    CLK_M4_UART1
+   *    UART1 peripheral clock (PCLK)       BASE_UART1_CLK CLK_APB0_UART1
+   *    USART2 clock to register interface  BASE_M4_CLK    CLK_M4_USART2
+   *    USART2 peripheral clock (PCLK)      BASE_UART2_CLK CLK_APB2_UART2
+   *    USART3 clock to register interface  BASE_M4_CLK    CLK_M4_USART3
+   *    USART3 peripheral clock (PCLK)      BASE_UART3_CLK CLK_APB2_UART3
+   *    ----------------------------------- -------------- --------------
+   */
+
+#warning "Missing logic"
+#if 0
+  regval  = getreg32(LPC43_SYSCON_PCONP);
+  regval &= ~(SYSCON_PCONP_PCUSART0|SYSCON_PCONP_PCUART1|
+              SYSCON_PCONP_PCUSART2|SYSCON_PCONP_PCUSART3);
+#if defined(CONFIG_USART0_SERIAL_CONSOLE)
+  regval |= SYSCON_PCONP_PCUSART0;
+#elif defined(CONFIG_UART1_SERIAL_CONSOLE)
+  regval |= SYSCON_PCONP_PCUART1;
+#elif defined(CONFIG_USART2_SERIAL_CONSOLE)
+  regval |= SYSCON_PCONP_PCUSART2;
+#elif defined(CONFIG_USART3_SERIAL_CONSOLE)
+  regval |= SYSCON_PCONP_PCUSART3;
+#endif
+  putreg32(regval, LPC43_SYSCON_PCONP);
+
+/* Step 2: Enable peripheral clocking for the console UART and disable
+ * clocking for all other UARTs
+ */
+
+  regval = getreg32(LPC43_SYSCON_PCLKSEL0);
+  regval &= ~(SYSCON_PCLKSEL0_USART0_MASK|SYSCON_PCLKSEL0_UART1_MASK);
+#if defined(CONFIG_USART0_SERIAL_CONSOLE)
+  regval |= (CONSOLE_CCLKDIV << SYSCON_PCLKSEL0_USART0_SHIFT);
+#elif defined(CONFIG_UART1_SERIAL_CONSOLE)
+  regval |= (CONSOLE_CCLKDIV << SYSCON_PCLKSEL0_UART1_SHIFT);
+#endif
+  putreg32(regval, LPC43_SYSCON_PCLKSEL0);
+
+  regval = getreg32(LPC43_SYSCON_PCLKSEL1);
+  regval &= ~(SYSCON_PCLKSEL1_USART2_MASK|SYSCON_PCLKSEL1_USART3_MASK);
+#if defined(CONFIG_USART2_SERIAL_CONSOLE)
+  regval |= (CONSOLE_CCLKDIV << SYSCON_PCLKSEL1_USART2_SHIFT);
+#elif defined(CONFIG_USART3_SERIAL_CONSOLE)
+  regval |= (CONSOLE_CCLKDIV << SYSCON_PCLKSEL1_USART3_SHIFT);
+#endif
+  putreg32(regval, LPC43_SYSCON_PCLKSEL1);
+#endif
+
+  /* Configure UART pins for the selected CONSOLE.  Definitions are
+   * required in the board.h header file in order to map pins to the
+   * correct pin and GPIO configuration.
+   */
+
+#if defined(CONFIG_USART0_SERIAL_CONSOLE)
+  lpc43_pinconfig(PINCONF_U0_TXD);
+  lpc43_pinconfig(PINCONF_U0_RXD);
+#elif defined(CONFIG_UART1_SERIAL_CONSOLE)
+  lpc43_pinconfig(PINCONF_U1_TXD);
+  lpc43_pinconfig(PINCONF_U1_RXD);
+#ifdef CONFIG_UART1_FLOWCONTROL
+  lpc43_pinconfig(PINCONF_U1_CTS);
+  lpc43_pinconfig(PINCONF_U1_DCD);
+  lpc43_pinconfig(PINCONF_U1_DSR);
+  lpc43_pinconfig(PINCONF_U1_DTR);
+  lpc43_pinconfig(PINCONF_U1_RI);
+  lpc43_pinconfig(PINCONF_U1_RTS);
+#endif
+#elif defined(CONFIG_USART2_SERIAL_CONSOLE)
+  lpc43_pinconfig(PINCONF_U2_TXD);
+  lpc43_pinconfig(PINCONF_U2_RXD);
+#elif defined(CONFIG_USART3_SERIAL_CONSOLE)
+  lpc43_pinconfig(PINCONF_U3_TXD);
+  lpc43_pinconfig(PINCONF_U3_RXD);
+#endif
+
+  /* Configure the console (only) */
+
+#if defined(HAVE_CONSOLE) && !defined(CONFIG_SUPPRESS_UART_CONFIG)
+
+  /* Clear fifos */
+
+  putreg32(UART_FCR_RXRST|UART_FCR_TXRST, CONSOLE_BASE+LPC43_UART_FCR_OFFSET);
+
+  /* Set trigger */
+
+  putreg32(UART_FCR_FIFOEN|UART_FCR_RXTRIGGER_8, CONSOLE_BASE+LPC43_UART_FCR_OFFSET);
+
+  /* Set up the LCR and set DLAB=1 */
+
+  putreg32(CONSOLE_LCR_VALUE|UART_LCR_DLAB, CONSOLE_BASE+LPC43_UART_LCR_OFFSET);
+
+  /* Set the BAUD divisor */
+
+  putreg32(CONSOLE_DL >> 8, CONSOLE_BASE+LPC43_UART_DLM_OFFSET);
+  putreg32(CONSOLE_DL & 0xff, CONSOLE_BASE+LPC43_UART_DLL_OFFSET);
+
+  /* Clear DLAB */
+
+  putreg32(CONSOLE_LCR_VALUE, CONSOLE_BASE+LPC43_UART_LCR_OFFSET);
+
+  /* Configure the FIFOs */
+
+  putreg32(UART_FCR_RXTRIGGER_8|UART_FCR_TXRST|UART_FCR_RXRST|UART_FCR_FIFOEN,
+           CONSOLE_BASE+LPC43_UART_FCR_OFFSET);
+#endif
+#endif /* HAVE_UART */
+}
+
+
diff --git a/nuttx/arch/arm/src/lpc43xx/lpc43_lowputc.h b/nuttx/arch/arm/src/lpc43xx/lpc43_lowputc.h
index ee5e630f4..b15c9411c 100644
--- a/nuttx/arch/arm/src/lpc43xx/lpc43_lowputc.h
+++ b/nuttx/arch/arm/src/lpc43xx/lpc43_lowputc.h
@@ -1,4 +1,4 @@
-/************************************************************************************
+/****************************************************************************
  * arch/arm/src/lpc43xx/lpc43_lowputc.h
  *
  *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
@@ -31,28 +31,28 @@
  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  *
- ************************************************************************************/
+ ****************************************************************************/
 
 #ifndef __ARCH_ARM_SRC_LPC43XX_LOWSETUP_H
 #define __ARCH_ARM_SRC_LPC43XX_LOWSETUP_H
 
-/************************************************************************************
+/****************************************************************************
  * Included Files
- ************************************************************************************/
+ ****************************************************************************/
 
 #include <nuttx/config.h>
 
-/************************************************************************************
+/****************************************************************************
  * Pre-processor Definitions
- ************************************************************************************/
+ ****************************************************************************/
 
-/************************************************************************************
+/****************************************************************************
  * Public Types
- ************************************************************************************/
+ ****************************************************************************/
 
-/************************************************************************************
+/****************************************************************************
  * Public Data
- ************************************************************************************/
+ ****************************************************************************/
 
 #ifndef __ASSEMBLY__
 
@@ -64,18 +64,18 @@ extern "C" {
 #define EXTERN extern
 #endif
 
-/************************************************************************************
+/****************************************************************************
  * Public Functions
- ************************************************************************************/
+ ****************************************************************************/
 
-/************************************************************************************
+/****************************************************************************
  * Name: lpc43_lowsetup
  *
  * Description:
- *   Called at the very beginning of _start.  Performs low level initialization
- *   of serial console.
+ *   Called at the very beginning of _start.  Performs low level
+ *   initialization of the serial console.
  *
- ************************************************************************************/
+ ****************************************************************************/
 
 EXTERN void lpc43_lowsetup(void);
 
diff --git a/nuttx/arch/arm/src/lpc43xx/lpc43_pinconfig.c b/nuttx/arch/arm/src/lpc43xx/lpc43_pinconfig.c
new file mode 100644
index 000000000..d41d6f588
--- /dev/null
+++ b/nuttx/arch/arm/src/lpc43xx/lpc43_pinconfig.c
@@ -0,0 +1,82 @@
+/****************************************************************************
+ *  arch/arm/src/lpc43/lpc43_pinconfig.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <arch/board/board.h>
+#include <nuttx/config.h>
+
+#include <nuttx/arch.h>
+#include <errno.h>
+
+#include "lpc43_pinconfig.h"
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: lpc43_pinconfig
+ *
+ * Description:
+ *   Configure a pin based on bit-encoded description of the pin.
+ *
+ * Input Value:
+ *   20-bit encoded value describing the pin.
+ *
+ * Returned Value:
+ *   OK on success; A negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int lpc43_pinconfig(uint32_t pinconf)
+{
+#warning "Missing logic"
+  return -ENOSYS;
+}
diff --git a/nuttx/arch/arm/src/lpc43xx/lpc43_pinconfig.h b/nuttx/arch/arm/src/lpc43xx/lpc43_pinconfig.h
index 42ab5eb72..27769f4b4 100644
--- a/nuttx/arch/arm/src/lpc43xx/lpc43_pinconfig.h
+++ b/nuttx/arch/arm/src/lpc43xx/lpc43_pinconfig.h
@@ -265,17 +265,17 @@ extern "C" {
  * Returned Value:
  *   OK on success; A negated errno value on failure.
  *
- ************************************************************************************/
+ ********************************************************************************************/
 
 EXTERN int lpc43_pinconfig(uint32_t pinconf);
 
-/************************************************************************************
+/********************************************************************************************
  * Function:  lpc43_dumppinconfig
  *
  * Description:
- *   Dump all pin configuration registers associated with the provided base address
+ *   Dump all pin configuration registers associated with the provided pin configuration
  *
- ************************************************************************************/
+ ********************************************************************************************/
 
 #ifdef CONFIG_DEBUG
 EXTERN int lpc43_dumppinconfig(uint32_t pinconf, const char *msg);
diff --git a/nuttx/arch/arm/src/lpc43xx/lpc43_serial.h b/nuttx/arch/arm/src/lpc43xx/lpc43_serial.h
new file mode 100644
index 000000000..6d9a50793
--- /dev/null
+++ b/nuttx/arch/arm/src/lpc43xx/lpc43_serial.h
@@ -0,0 +1,65 @@
+/****************************************************************************
+ * arch/arm/src/lpc43xx/lpc43_serial.h
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_LPC43XX_LPC43_SERIAL_H
+#define __ARCH_ARM_SRC_LPC43XX_LPC43_SERIAL_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+#endif /* __ARCH_ARM_SRC_LPC43XX_LPC43_SERIAL_H */
diff --git a/nuttx/arch/arm/src/lpc43xx/lpc43_timerisr.c b/nuttx/arch/arm/src/lpc43xx/lpc43_timerisr.c
new file mode 100644
index 000000000..83a64e34f
--- /dev/null
+++ b/nuttx/arch/arm/src/lpc43xx/lpc43_timerisr.c
@@ -0,0 +1,151 @@
+/****************************************************************************
+ * arch/arm/src/lpc43xx/lpc43_timerisr.c
+ *
+ *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <time.h>
+#include <debug.h>
+
+#include <nuttx/arch.h>
+#include <arch/board/board.h>
+
+#include "nvic.h"
+#include "clock_internal.h"
+#include "up_internal.h"
+#include "up_arch.h"
+
+#include "chip.h"
+
+/****************************************************************************
+ * Definitions
+ ****************************************************************************/
+
+/* The desired timer interrupt frequency is provided by the definition
+ * CLK_TCK (see include/time.h).  CLK_TCK defines the desired number of
+ * system clock ticks per second.  That value is a user configurable setting
+ * that defaults to 100 (100 ticks per second = 10 MS interval).
+ *
+ * The Clock Source: Either the internal CCLK or external STCLK (P3.26) clock
+ * as the source in the STCTRL register.  This file alwyays configures the
+ * timer to use CCLK as its source.
+ */
+
+#define SYSTICK_RELOAD ((LPC43_CCLK / CLK_TCK) - 1)
+
+/* The size of the reload field is 24 bits.  Verify that the reload value
+ * will fit in the reload register.
+ */
+
+#if SYSTICK_RELOAD > 0x00ffffff
+#  error SYSTICK_RELOAD exceeds the range of the RELOAD register
+#endif
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Global Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Function:  up_timerisr
+ *
+ * Description:
+ *   The timer ISR will perform a variety of services for various portions
+ *   of the systems.
+ *
+ ****************************************************************************/
+
+int up_timerisr(int irq, uint32_t *regs)
+{
+  /* Process timer interrupt */
+
+  sched_process_timer();
+  return 0;
+}
+
+/****************************************************************************
+ * Function:  up_timerinit
+ *
+ * Description:
+ *   This function is called during start-up to initialize
+ *   the timer interrupt.
+ *
+ ****************************************************************************/
+
+void up_timerinit(void)
+{
+  uint32_t regval;
+
+  /* Set the SysTick interrupt to the default priority */
+
+  regval = getreg32(NVIC_SYSH12_15_PRIORITY);
+  regval &= ~NVIC_SYSH_PRIORITY_PR15_MASK;
+  regval |= (LPC43M4_SYSH_PRIORITY_DEFAULT << NVIC_SYSH_PRIORITY_PR15_SHIFT);
+  putreg32(regval, NVIC_SYSH12_15_PRIORITY);
+
+  /* Make sure that the SYSTICK clock source is set to use the LPC43xx CCLK */
+
+  regval = getreg32(NVIC_SYSTICK_CTRL);
+  regval |= NVIC_SYSTICK_CTRL_CLKSOURCE;
+  putreg32(regval, NVIC_SYSTICK_CTRL);
+
+  /* Configure SysTick to interrupt at the requested rate */
+
+  putreg32(SYSTICK_RELOAD, NVIC_SYSTICK_RELOAD);
+
+  /* Attach the timer interrupt vector */
+
+  (void)irq_attach(LPC43_IRQ_SYSTICK, (xcpt_t)up_timerisr);
+
+  /* Enable SysTick interrupts */
+
+  putreg32((NVIC_SYSTICK_CTRL_CLKSOURCE|NVIC_SYSTICK_CTRL_TICKINT|
+            NVIC_SYSTICK_CTRL_ENABLE), NVIC_SYSTICK_CTRL);
+
+  /* And enable the timer interrupt */
+
+  up_enable_irq(LPC43_IRQ_SYSTICK);
+}