Add support for a serial console on UART1 for the Open1788 board

configs/open1788/README.txt

@@ -11,6 +11,7 @@ CONTENTS
   o LEDs
   o Buttons
   o FPU
+  o Serial Console
   o Using OpenOCD with the Olimex ARM-USB-OCD
   o Loading Code with the ISP Board
   o Configuration
@@ -154,6 +155,44 @@ See the section above on Toolchains, NOTE 2, for explanations for some of
   the configuration settings.  Some of the usual settings are just not supported
   by the "Lite" version of the Atollic toolchain.
 
+Serial Console
+==============
+
+  By Default, UART0 is used as the serial console in all configurations.  This
+  may be connected to your computer via an external RS-232 driver or via the
+  WaveShare USB ISP/VCOM module.
+
+  As an option, UART1 can also be used for the serial console by reconfiguring
+  as follows:
+
+    System Type:
+      CONFIG_LPC17_UART0=n          : Disable UART0 if it is no longer used
+      CONFIG_LPC17_UART1=y          : Enable UART1
+
+    Drivers:
+      CONFIG_UART1_SERIAL_CONSOLE=y : Setup up the UART1 configuration
+      CONFIG_UART1_RXBUFSIZE=256
+      CONFIG_UART1_TXBUFSIZE=256
+      CONFIG_UART1_BAUD=115200
+      CONFIG_UART1_BITS=8
+      CONFIG_UART1_PARITY=0
+      CONFIG_UART1_2STOP=0
+
+  In this configuration using UART1, it is necessary to disable LED support
+  on the board.  That is because UART1 RXD is set for pin p0.16, but so it
+  LED2.  If you do not disable LED support then no incoming serial data will
+  be recevied.
+
+    Common Board Options
+      CONFIG_ARCH_LEDS=n             : Disable LED support
+
+  You should also remove the LED2 jumper so that the RXD input does not
+  attempt to drive LED2 as well (this this does not seem to interfere with
+  data receipt).
+
+  NOTE:  If you intend to use LEDs, then you might want to redesign some of
+  the LED logic in the src/ subdirectory so that it does not use LED2.
+
 Using OpenOCD with the Olimex ARM-USB-OCD
 =========================================
 

configs/open1788/include/board.h

@@ -219,7 +219,7 @@
  * any way.  The following definitions are used to access individual LEDs.
  *
  * LED1 -- Connected to P1[14]
- * LED2 -- Connected to P0[16]
+ * LED2 -- Connected to P0[16] (shared with UART1 RXD)
  * LED3 -- Connected to P1[13]
  * LED4 -- Connected to P4[27]
  *
@@ -310,6 +310,30 @@
 #define GPIO_UART0_TXD             GPIO_UART0_TXD_2
 #define GPIO_UART0_RXD             GPIO_UART0_RXD_2
 
+/* UART1:
+ *
+ * All pin options are controlled by older briges on the bottom of the board.  There
+ * are the default settings on my board as it came out of the box:
+ *
+ * RTS   --- Connected to P0[22]
+ * RI    --- Connected to P0[21]
+ * DSR   --- Connected to P0[19]
+ * DCD   --- Connected to P0[18]
+ * CTS   --- Connected to P0[17]
+ * DTR   --- Connected to P0[20]
+ * TXD   --- Connected to P0[15]
+ * RXD   --- Connected to P0[16] (Shared with LED2)
+ */
+
+#define GPIO_UART1_RTS             GPIO_UART1_RTS_2
+#define GPIO_UART1_RI              GPIO_UART1_RI_1
+#define GPIO_UART1_DSR             GPIO_UART1_DSR_1
+#define GPIO_UART1_DCD             GPIO_UART1_DCD_1
+#define GPIO_UART1_CTS             GPIO_UART1_CTS_1
+#define GPIO_UART1_DTR             GPIO_UART1_DTR_1
+#define GPIO_UART1_TXD             GPIO_UART1_TXD_1
+#define GPIO_UART1_RXD             GPIO_UART1_RXD_1
+
 /* MCI-SDIO:
  *
  * D0    --- Connected to P1[6]

configs/open1788/src/open1788.h

@@ -132,7 +132,6 @@
  * Pins are configured as floating because there are pullups on the module.
  */
 
-#define GPIO_TC_PEN      (GPIO_INPUT | GPIO_FLOAT | GPIO_PORT2 | GPIO_PIN15)
 #define GPIO_TC_PENIRQ   (GPIO_INTBOTH | GPIO_FLOAT | GPIO_PORT2 | GPIO_PIN15)
 #define GPIO_TC_BUSY     (GPIO_INPUT | GPIO_FLOAT | GPIO_PORT2 | GPIO_PIN14)
 #define GPIO_TC_CS       (GPIO_OUTPUT | GPIO_VALUE_ONE | GPIO_PORT1 | GPIO_PIN8)