RA2L1A93CFM asynchronous serial port

[DS-LK]

I'm having a very strange asynchronous serial port issue. In my project, I use RA2L1A93CFM with an external crystal oscillator of 20MHz and HOCO clock source. When I use an external clock of 20M as the clock source, the serial port of RA2L1A93 sends data, and the pc receives it normally. When the HOCO clock source is used, the data received by the pc is garbled. I was able to confirm that the uart parameters I configured were correct. This project uses SPI0, TIMER0, FLASH。 The problem is basically the same as that described in this article (https://www.likecs.com/show-204419328.html), but mine is the HOCO clock source, and the serial port is abnormal

[renesas-brandon-hussey]

Hi @DS-LK. FYI, the official support forum for FSP is on Renesas Rulz. We advise you create your tickets there for the quickest response when debugging of an application is required.

For continued support here on GitHub, we'll need more information about the issue. Please provide the smallest possible project that exhibits the issue.