stm32cube: stm32f4, stm32f7: Fix errata workaround#362
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Could you mention the changes in both
stm32cube/stm32f4xx/README
and
stm32cube/stm32f7xx/README
The errata for STM32F4 says successive writes to MACCR may be ignored, and recommends reading back, waiting and rewriting as a workaround. This workaround has been done correctly for writes to TE, but has mistakenly been removed after enabling RE, which means that receiving sometimes ended up not working. The errata recommends doing multiple writes, then a final wait and rewrite at the end, which seems to work correctly. Even though this is not mentioned in the F7 errata, the same fix is required there. Fixes zephyrproject-rtos/zephyr#107024. Signed-off-by: Ole Morten Haaland <omh@ixys.no>
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juickar
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etienne-lms
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@juickar Do we know if this will be fixed in "upstream" Cube packages ? |
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I opened a ticket but the assignee is OoO until Monday |
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Ok. Let's wait for an initial feedback before merging. |
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For tracking purpose: HAL1-27528. Still no update |
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The errata for STM32F4 says successive writes to MACCR may be ignored, and recommends reading back, waiting and rewriting as a workaround. This workaround has been done correctly for writes to TE, but has mistakenly been removed after enabling RE, which means that receiving sometimes ended up not working. The errata recommends doing multiple writes, then a final wait and rewrite at the end, which seems to work correctly.
Even though this is not mentioned in the F7 errata, the same fix is required there.
Fixes zephyrproject-rtos/zephyr#107024.