USB superspeed peripherals

[usb_dev]

When I use cyfxuartlpregmode.c to test UART send and receive, I found if I do not use "CyU3PUartSetTimeout (1, 50000);" :

1. the SuperSpeed Explorer Kit still works but slower (ok to me)

2. the program should send "VRS" and receive "20181114" about two times a second, but sometimes, it loses "1114" (about 200 - 3000 times, it will happen once)

So, my question is, why did this happen? and more importantly, how to choose the readLoopCnt and writeLoopCnt value?

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uartConfig.baudRate = CY_U3P_UART_BAUDRATE_9600;

uartConfig.isDma = CyFalse; 

io_cfg.isDQ32Bit = CyTrue;

io_cfg.lppMode = CY_U3P_IO_MATRIX_LPP_DEFAULT;

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[Rashi_Vatsa]

Hello,

Please refer to this thread  Solved: Re: FX3 UART Problems - Infineon Developer Community with similar issue 

[usb_dev]

Hi， Thanks for the reply， I found that topic before. What I really want  to know is:

there are lots of values between 1 , 50000,   0xFFFFFFFF for both read and write param, and the read and write process is really a small part of the whole project

So I'd like to know  more detail about how to pick a "right" value to avoid any other potential problems

Is there any document I can read?

[Rashi_Vatsa]

Hello,

You can refer to the FX3 API guide in the FX3 SDK, to understand the working of this API. We suggest keeping the timeout value low.

[usb_dev]

Thanks