From 4750867a34ebfc4e79a62ea39dbe19a74a0aa18c Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Mon, 1 Apr 2013 14:10:54 +0000
Subject: [PATCH] Add support for CAN1 and CAN2 to zkit-arm-1769.  From M.
 Kannan

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5808 42af7a65-404d-4744-a932-0658087f49c3
---
 configs/zkit-arm-1769/include/board.h |  2 ++
 configs/zkit-arm-1769/src/up_can.c    | 50 ++++++++++++++++-----------
 2 files changed, 32 insertions(+), 20 deletions(-)

diff --git a/configs/zkit-arm-1769/include/board.h b/configs/zkit-arm-1769/include/board.h
index 54362fc034..63dd4d914c 100644
--- a/configs/zkit-arm-1769/include/board.h
+++ b/configs/zkit-arm-1769/include/board.h
@@ -231,6 +231,8 @@
 
 #define GPIO_CAN1_RD       GPIO_CAN1_RD_1
 #define GPIO_CAN1_TD       GPIO_CAN1_TD_1
+#define GPIO_CAN2_RD       GPIO_CAN2_RD_2 
+#define GPIO_CAN2_TD       GPIO_CAN2_TD_2
 #define GPIO_I2C1_SDA      GPIO_I2C0_SDA
 #define GPIO_I2C1_SCL      GPIO_I2C0_SCL
 #define GPIO_SSP1_SCK      GPIO_SSP1_SCK_1
diff --git a/configs/zkit-arm-1769/src/up_can.c b/configs/zkit-arm-1769/src/up_can.c
index 0f50cd146d..eaec05696b 100644
--- a/configs/zkit-arm-1769/src/up_can.c
+++ b/configs/zkit-arm-1769/src/up_can.c
@@ -5,7 +5,7 @@
  *   Copyright (C) 2013 Zilogic Systems. All rights reserved.
  *   Author: Raashid Muhammed <code@zilogic.com>
  *
- *   Based on configs/olimex-lpc1766stk/src/up_can.c 
+ *   Based on configs/olimex-lpc1766stk/src/up_can.c
  *
  *   Copyright (C) 2012 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
@@ -63,21 +63,9 @@
  * Pre-processor Definitions
  ************************************************************************************/
 /* Configuration ********************************************************************/
+#define CAN_PORT1 1
+#define CAN_PORT2 2
 
-#if defined(CONFIG_LPC17_CAN1) && defined(CONFIG_LPC17_CAN2)
-#  warning "Both CAN1 and CAN2 are enabled.  Assuming only CAN1."
-#  undef CONFIG_LPC17_CAN2
-#endif
-
-#ifdef CONFIG_LPC17_CAN2
-#  warning "CAN2 is not connected on the ZKIT-ARM-1769"
-#endif
-
-#ifdef CONFIG_LPC17_CAN1
-#  define CAN_PORT 1
-#else
-#  define CAN_PORT 2
-#endif
 
 /* Debug ***************************************************************************/
 /* Non-standard debug that may be enabled just for testing CAN */
@@ -121,23 +109,45 @@ int can_devinit(void)
 
   if (!initialized)
     {
-      /* Call lpc17_caninitialize() to get an instance of the CAN interface */
+#ifdef CONFIG_LPC17_CAN1
+      /* Call lpc17_caninitialize() to get an instance of the CAN1 interface */
 
-      can = lpc17_caninitialize(CAN_PORT);
+      can = lpc17_caninitialize(CAN_PORT1);
       if (can == NULL)
         {
-          candbg("ERROR:  Failed to get CAN interface\n");
+          candbg("ERROR:  Failed to get CAN1 interface\n");
           return -ENODEV;
         }
 
-      /* Register the CAN driver at "/dev/can0" */
+      /* Register the CAN1 driver at "/dev/can0" */
 
       ret = can_register("/dev/can0", can);
       if (ret < 0)
         {
-          candbg("ERROR: can_register failed: %d\n", ret);
+          candbg("ERROR: CAN1 register failed: %d\n", ret);
           return ret;
         }
+#endif
+
+#ifdef CONFIG_LPC17_CAN2
+      /* Call lpc17_caninitialize() to get an instance of the CAN2 interface */
+
+      can = lpc17_caninitialize(CAN_PORT2);
+      if (can == NULL)
+        {
+          candbg("ERROR:  Failed to get CAN2 interface\n");
+          return -ENODEV;
+        }
+
+      /* Register the CAN2 driver at "/dev/can1" */
+
+      ret = can_register("/dev/can1", can);
+      if (ret < 0)
+        {
+          candbg("ERROR: CAN2 register failed: %d\n", ret);
+          return ret;
+        }
+#endif
 
       /* Now we are initialized */