The goal of this project is to show how to configure the CAN controller and how to manage CAN message transfers.
Two mailboxes are used: one configured in transmission, the other in reception. The CAN controller tries to send on the bus messages through the mailbox 0 and waits for messages on mailbox 1.
The BasicCAN project example must run on two different boards as there is only one CAN connector by AT91SAM7X-EK board...
So, it is necessary to use two boards linked together by a CAN bus to run successfully the project.
The number of received and transmitted messages is displayed through the DBGU by a serial UART connection
(115.2 Kbps, 8 data bits, no parity, 1 stop bit, no flux control).
This project is dedicated to the AT91SAM7Xxxx device and its corresponding Evaluation Board, the AT91SAM7X-EK.
Software tools
Related Documentation |
Litterature Number Reference |
ARM-Based Software Package |
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AT91SAM7Xxxx Datasheet |
6120 |
Bosch CAN Specification 2.0 Part A and Part B |
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CAN ISO Standardization:
Road vehicles -- Controller area network (CAN) ISO/11898 |
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Source Files |
Description Files |
../src |
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../src/main.c (main.h) |
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../src/can.c |
CAN Specific code |
../src/trace.h |
Trace functions include file
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../src/AT91SAM7X-EK.h |
Evaluation Board Features Definition File
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srcxxx/ |
Specific IDE source code directory
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srcxxx/Cstartup.s79 |
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srcxxx/Cstartup.c |
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srcxxx/project.h |
Project specific include file
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srcxxx/at91sdio.c (at91sdio.h) |
Stdio functions redefinition
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