9f174ec452
Add tests for all CAN bitrates recommended by CAN in Automation (CiA). The newly added bitrate tests are guarded by new, local Kconfig option (CONFIG_TEST_ALL_BITRATES) to avoid breaking existing board tests. Some boards may need adjustments to their CAN core clock in order to pass the newly added tests. Once a board is confirmed to meet these additional checks, this Kconfig can be enabled for that board to avoid future regressions. Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
41 lines
1.1 KiB
Plaintext
41 lines
1.1 KiB
Plaintext
# Copyright (c) 2024 Vestas Wind Systems A/S
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# SPDX-License-Identifier: Apache-2.0
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mainmenu "CAN timing test"
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config TEST_ALL_BITRATES
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bool "Test all CAN in Automation (CiA) recommended bitrates"
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help
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Enable test of all bitrates recommended by CAN in Automation (CiA). Not all CAN
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controllers can meet all of the bitrates listed below, and some board configurations may
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impose limits on which bitrates can be met due to limitations in the CAN core clock
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frequency selection.
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CiA 301 lists the following nominal bitrates as recommended:
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- 10 kbit/s
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- 20 kbit/s
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- 50 kbit/s
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- 125 kbit/s
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- 250 kbit/s
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- 500 kbit/s
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- 800 kbit/s
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- 1 Mbit/s
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CiA 601-2 lists the following exemplary CAN FD data phase bitrates:
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- 1.0 Mbit/s
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- 2.0 Mbit/s
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- 4.0 Mbit/s
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- 5.0 Mbit/s
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- 8.0 Mbit/s
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CiA 601-3 recommends the following CAN FD core clock frequencies for good node
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interoperability. The higher the frequency, the better:
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- 20 MHz
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- 40 MHz
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- 80 MHz
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If this option is not enabled, the tests will be limited to a historical, safe set of CAN
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bitrates.
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source "Kconfig.zephyr"
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