Re: UART Communication problems at 921600
Posted: Wed Nov 13, 2019 7:00 am
ESP32 Official Forum
That's all right with me if we could get it working without errors in the uart communication.
Is this the official maximum baudrate achievable without hw flow control? Could you link the documentation specifying this limit? I only remember seeing the 5M limit and no requirement for hw flow control connections mention, but I could be wrong.ESP_houwenxiang wrote: ↑Thu Nov 14, 2019 7:40 amHi, LukeSkyWire
Have you enabled hardware flow control? At 1M baud, the CPU can read out the data in fifo in time. But At 2M baud-rate, the CPU cannot read out the data in fifo in time, resulting in data loss. When enable the flow control, the baud-rate can reach 5M.