diff options
Diffstat (limited to 'peripherals/can/can.h')
| -rw-r--r-- | peripherals/can/can.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/peripherals/can/can.h b/peripherals/can/can.h new file mode 100644 index 0000000..63a83b3 --- /dev/null +++ b/peripherals/can/can.h @@ -0,0 +1,113 @@ +/* ----------------------------------------------------------------------------
+ * ATMEL Microcontroller Software Support
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL 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 _CAN_H
+#define _CAN_H
+
+//------------------------------------------------------------------------------
+// Definitions
+//------------------------------------------------------------------------------
+#define AT91C_CAN_TIMEOUT 100000
+
+#define AT91C_TEST_NOK 0
+#define AT91C_TEST_OK 1
+
+#define CAN_STATUS_SUCCESS 0
+#define CAN_STATUS_LOCKED 1
+#define CAN_STATUS_ABORTED 2
+#define CAN_STATUS_RESET 3
+
+#if defined (AT91C_BASE_CAN)
+ #define AT91C_BASE_CAN0 AT91C_BASE_CAN
+#endif
+#if defined (AT91C_ID_CAN)
+ #define AT91C_ID_CAN0 AT91C_ID_CAN
+#endif
+#if defined (AT91C_BASE_CAN_MB0)
+ #define AT91C_BASE_CAN0_MB0 AT91C_BASE_CAN_MB0
+ #define AT91C_BASE_CAN0_MB1 AT91C_BASE_CAN_MB1
+ #define AT91C_BASE_CAN0_MB2 AT91C_BASE_CAN_MB2
+ #define AT91C_BASE_CAN0_MB3 AT91C_BASE_CAN_MB3
+ #define AT91C_BASE_CAN0_MB4 AT91C_BASE_CAN_MB4
+ #define AT91C_BASE_CAN0_MB5 AT91C_BASE_CAN_MB5
+ #define AT91C_BASE_CAN0_MB6 AT91C_BASE_CAN_MB6
+ #define AT91C_BASE_CAN0_MB7 AT91C_BASE_CAN_MB7
+#endif
+#if defined (AT91C_BASE_CAN_MB8)
+ #define AT91C_BASE_CAN0_MB8 AT91C_BASE_CAN_MB8
+ #define AT91C_BASE_CAN0_MB9 AT91C_BASE_CAN_MB9
+ #define AT91C_BASE_CAN0_MB10 AT91C_BASE_CAN_MB10
+ #define AT91C_BASE_CAN0_MB11 AT91C_BASE_CAN_MB11
+ #define AT91C_BASE_CAN0_MB12 AT91C_BASE_CAN_MB12
+ #define AT91C_BASE_CAN0_MB13 AT91C_BASE_CAN_MB13
+ #define AT91C_BASE_CAN0_MB14 AT91C_BASE_CAN_MB14
+ #define AT91C_BASE_CAN0_MB15 AT91C_BASE_CAN_MB15
+#endif
+
+#define NUM_MAILBOX_MAX 16
+
+//------------------------------------------------------------------------------
+// Types
+//------------------------------------------------------------------------------
+typedef struct
+{
+ volatile unsigned char state;
+ volatile unsigned char can_number;
+ volatile unsigned char mailbox_number;
+ volatile unsigned char test_can;
+ volatile unsigned int mode_reg;
+ volatile unsigned int acceptance_mask_reg;
+ volatile unsigned int identifier;
+ volatile unsigned int data_low_reg;
+ volatile unsigned int data_high_reg;
+ volatile unsigned int control_reg;
+ volatile unsigned int mailbox_in_use;
+ volatile int size;
+} CanTransfer;
+
+//------------------------------------------------------------------------------
+// Exported functions
+//------------------------------------------------------------------------------
+extern unsigned char CAN_Init( unsigned int baudrate,
+ CanTransfer *canTransferRead,
+ CanTransfer *canTransferWrite );
+extern void CAN_BasicTestSuite(void);
+extern void CAN_disable( void );
+extern void CAN_ResetAllMailbox( void );
+extern void CAN_ResetTransfer( CanTransfer *pTransfer );
+extern void CAN_InitMailboxRegisters( CanTransfer *pTransfer );
+extern unsigned char CAN_IsInIdle( CanTransfer *pTransfer );
+
+extern unsigned char CAN_Write( CanTransfer *pTransfer );
+extern unsigned char CAN_Read( CanTransfer *pTransfer );
+
+extern void CAN_BasicTestSuiteWithoutInterrupt( void );
+extern unsigned char CAN_IsInIdle( CanTransfer *pTransfer );
+#endif // _CAN_H
+
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