Low level UART support

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@196 42af7a65-404d-4744-a932-0658087f49c3

configs/mcu123-lpc214x/defconfig

@@ -78,6 +78,35 @@ CONFIG_BCFG1_SETUP=n
 CONFIG_BCFG2_SETUP=n
 CONFIG_BCFG3_SETUP=n
 
+#
+# LPC214X specific device driver settings
+#
+# CONFIG_UARTn_SERIAL_CONSOLE - selects the UARTn for the
+#   console and ttys0 (default is the UART0).
+# CONFIG_UARTn_RXBUFSIZE - Characters are buffered as received.
+#   This specific the size of the receive buffer
+# CONFIG_UARTn_TXBUFSIZE - Characters are buffered before
+#   being sent.  This specific the size of the transmit buffer
+# CONFIG_UARTn_BAUD - The configure BAUD of the UART.  Must be
+# CONFIG_UARTn_BITS - The number of bits.  Must be either 7 or 8.
+# CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity, 3=mark 1, 4=space 0
+# CONFIG_UARTn_2STOP - Two stop bits
+#
+CONFIG_UART0_SERIAL_CONSOLE=y
+CONFIG_UART1_SERIAL_CONSOLE=n
+CONFIG_UART0_TXBUFSIZE=256
+CONFIG_UART1_TXBUFSIZE=256
+CONFIG_UART0_RXBUFSIZE=256
+CONFIG_UART1_RXBUFSIZE=256
+CONFIG_UART0_BAUD=115200
+CONFIG_UART1_BAUD=115200
+CONFIG_UART0_BITS=8
+CONFIG_UART1_BITS=8
+CONFIG_UART0_PARITY=0
+CONFIG_UART1_PARITY=0
+CONFIG_UART0_2STOP=n
+CONFIG_UART1_2STOP=n
+
 #
 # General OS setup
 #

configs/mcu123-lpc214x/include/board.h

@@ -50,6 +50,22 @@
 
 /* Clocking *************************************************/
 
+#define LPC214X_FOSC      12000000
+#define LPC214X_PLL_M     5
+#define LPC214X_MSEL      (PLL_M-1)
+#define LPC214X_PLL_P     2
+
+#define LPC214X_PSEL0     5
+#define LPC214X_PSEL1     6
+
+#define LPC214X_PLLE      0
+#define LPC214X_PLLC      1
+
+#define LPC214X_PLOCK     10
+
+#define LPC214X_PLL_FEED1 0xaa
+#define LPC214X_PLL_FEED2 0x55
+
 /* LED definitions ******************************************/
 
 /************************************************************