i am testing UART connection between k210 and esp32 on maixduino board. My test code is kendryte-standalone for k210 and arduino for esp32. I am sending simple text every 2000ms (loop with msleep(2000)) and i found that in some cases its shorter than 2000ms between 2 messages:
12:03:56.464 -> text 12:03:58.476 -> text 12:04:00.490 -> text 12:04:02.464 -> text
I dont know yet if this is k210 msleep issue or just arduino logging.