STM32 CAN driver now compiles

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4210 42af7a65-404d-4744-a932-0658087f49c3

configs/stm3240g-eval/README.txt

@@ -15,6 +15,7 @@ Contents
   - LEDs
   - Ethernet
   - PWM
+  - CAN
   - Configurations
 
 Development Environment
@@ -220,6 +221,40 @@ FSMC must be disabled in this case!  PD13 is available at:
   TFT LCD Connector, CN19, pin 17 -- not available without removing the LCD.
   Motor Control Connector CN15, pin 33 -- not available unless you bridge SB14.
 
+CAN
+===
+
+Connector 10 (CN10) is DB-9 male connector that can be used with CAN1 or CAN2.
+
+  JP10 connects CAN1_RX or CAN2_RX to the CAN transceiver
+  JP3 connects CAN1_TX or CAN2_TX to the CAN transceiver
+
+CAN signals are then available on CN10 pins:
+
+  CN10 Pin 7 = CANH
+  CN10 Pin 2 = CANL
+
+Mapping to STM32 GPIO pins:
+
+  PD0   = FSMC_D2 & CAN1_RX   
+  PD1   = FSMC_D3 & CAN1_TX   
+  PB13  = ULPI_D6 & CAN2_TX
+  PB5   = ULPI_D7 & CAN2_RX
+
+Configuration Options:
+
+  CONFIG_CAN - Enables CAN support (one or both of CONFIG_STM32_CAN1 or
+    CONFIG_STM32_CAN2 must also be defined)
+  CONFIG_CAN_FIFOSIZE - The size of the circular buffer of CAN messages.
+    Default: 8
+  CONFIG_CAN_NPENDINGRTR - The size of the list of pending RTR requests.
+    Default: 4
+
+  CONFIG_STM32_CAN1 - Enable support for CAN1
+  CONFIG_CAN1_BAUD - CAN1 BAUD rate.  Required if CONFIG_STM32_CAN1 is defined.
+  CONFIG_STM32_CAN2 - Enable support for CAN1
+  CONFIG_CAN2_BAUD - CAN1 BAUD rate.  Required if CONFIG_STM32_CAN2 is defined.
+
 STM3240G-EVAL-specific Configuration Options
 ============================================
 

configs/stm3240g-eval/include/board.h

@@ -301,6 +301,32 @@
 
 #define GPIO_TIM4_CH2 GPIO_TIM4_CH2_2
 
+/* CAN
+ *
+ * Connector 10 (CN10) is DB-9 male connector that can be used with CAN1 or CAN2.
+ *
+ *   JP10 connects CAN1_RX or CAN2_RX to the CAN transceiver
+ *   JP3 connects CAN1_TX or CAN2_TX to the CAN transceiver
+ *
+ * CAN signals are then available on CN10 pins:
+ *
+ *   CN10 Pin 7 = CANH
+ *   CN10 Pin 2 = CANL
+ *
+ * Mapping to STM32 GPIO pins:
+ *
+ *   PD0   = FSMC_D2 & CAN1_RX   
+ *   PD1   = FSMC_D3 & CAN1_TX   
+ *   PB13  = ULPI_D6 & CAN2_TX
+ *   PB5   = ULPI_D7 & CAN2_RX
+ */
+
+#define GPIO_CAN1_RX        GPIO_CAN1_RX_3
+#define GPIO_CAN1_TX        GPIO_CAN1_TX_3
+
+#define GPIO_CAN2_RX        GPIO_CAN2_RX_2
+#define GPIO_CAN2_TX        GPIO_CAN2_TX_1
+
 /************************************************************************************
  * Public Data
  ************************************************************************************/