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STMicroelectronics / stm32h7xx-hal-driver

Provides the STM32Cube MCU Component "hal_driver" of the STM32H7 series.
BSD 3-Clause "New" or "Revised" License
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HAL_ETH_ReleaseTxPacket() clears wrong bit when disabling PTP TX timestamping #75

Closed KarstenHohmeier closed 2 weeks ago

KarstenHohmeier commented 1 month ago

When cleaning up the descriptors with PTP enabled HAL_ETH_ReleaseTxPacket() tries to clear the TTSE bit in DESC2 but actually clears it in DESC3. It also uses a "magic number" to clear the bit instead of using the define ETH_DMATXNDESCRF_TTSE.

This is the wrong disable: https://github.com/STMicroelectronics/stm32h7xx_hal_driver/blob/ceda3ceeca2ee77a76d2de2ee6b560ad87c90a48/Src/stm32h7xx_hal_eth.c#L1429-L1433

This is the corresponding enable: https://github.com/STMicroelectronics/stm32h7xx_hal_driver/blob/ceda3ceeca2ee77a76d2de2ee6b560ad87c90a48/Src/stm32h7xx_hal_eth.c#L1728-L1731

So the correct disable should be:

CLEAR_BIT(heth->Init.TxDesc[idx].DESC2, ETH_DMATXNDESCRF_TTSE);

ASEHSTM commented 1 month ago

Hello @KarstenHohmeier,

ST Internal Reference: 190948

ASEHSTM commented 2 weeks ago

Fixed in aa891057c66d15f81ae01b2115cd96d079e6bc94