RT-Thread / RT-Thread/rt-thread
[Feature][stm32][drv_serial_v2] 串口支持硬件fifo？
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- Dominant language
- C
- Stars
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Description
Describe problem solved by the proposed feature
在finsh开到较高的波特率（比如2M）时，串口驱动（serial_v2）可能会来不及接收连续的数据（比如上键，\x1B\x5B\x41）导致overrun的问题，即使我使用的是480M的H750并将中断所用到的函数放入了itcm。
考虑到现在很多新的STM32都带了硬件FIFO，我在初始化完后使能硬件FIFO，finsh就可以顺利的接到上了
未来会考虑为STM32的串口驱动加入硬件FIFO吗
Describe your preferred solution
No response
Describe possible alternatives
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Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by locating the STM32 serial_v2 driver and its initialization path, then check how hardware FIFO support differs across the STM32 variants involved. Reproduce the high-baud-rate input case described for finsh and determine the driver behavior needed to avoid overrun. Done means the supported hardware FIFO is enabled safely and continuous input no longer loses data.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- embedded-iot, operating-systems
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100