RT-Thread / RT-Thread/rt-thread
（RT-Thread串口设备驱动相关问题，问题可见说明）MCU为OK1052的设备驱动层串口配置函数中，需要重新打开串口中断并配置优先级，才能使串口正常接收数据
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Description
1.问题起因
外设调用PrivIoctl(adapter->fd, OPE_INT, &ioctl_cfg) （函数见下图第94行），该函数为串口配置函数，但发现只有将该函数注释掉之后串口接收才正常，否则接收不到数据
2.解决方案（添加如下图630-635行所示解决问题代码，即重新使能中断，重新配置优先级分组）
设备驱动层串口configure配置处理函数如下图所示（630-635行为后期添加最终解决问题）
3.疑问
RT-Thread在板级初始化的时候已经配置了串口，并且使能了串口中断，设置了中断优先级分组，但为什么再重新配置串口后，仍然要再重新使能中断，配置优先级分组才能解决问题？
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 with the device-driver serial configure handler and the PrivIoctl(adapter->fd, OPE_INT, &ioctl_cfg) call described in the issue. Compare this path with the OK1052 board initialization that enables the serial interrupt and configures priority grouping; done means explaining why reconfiguration changes reception and confirming that serial data is received reliably.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- c
- Domain
- embedded-iot, operating-systems
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100