如何检查CY3255 DEVICIT之间的封包错误率？

你好，
我们正在对2个CY3255 DEVICIT之间的通信质量进行测试。
为了检查封包错误率，我设置以下寄存器：rx_overwrite = 1，这样的rx_packet_dropped状态标志不会触发，和tx_retry = 0。这种登记的设置，我们可以检测每个无效CRC传输错误。（在错误上没有ACK）。
用这种方法，我把每31个字节的数据（有效载荷数据包总大小：39字节）和一个速率为2400bps传输。1000发送的数据包，我至少有1的丢失的数据包。这是正常的，因为一个链接，只有1、2米长的吗？
= & gt；一包1000：与假设我们有至少一个故障点的故障包：BER = 1/（39×12×1000）= 2,1e-6
另一个问题：在由Cypress提供的API，定义了几乎所有的功能，我可以轻松地为每个人找到源代码。但我找不到定义和plt_poll()源代码！！我想知道这个函数是如何工作的。
谢谢你
当做，
法比恩



     以下为原文
  Hi,
    We are doing some tests on the quality of the communication between 2 CY3275 devkits.
    In order to check the packet error rate, I've set the following registers : Rx_Overwrite = 1, this way the rx_packet_dropped status flag won't trigger, and TX_Retry = 0. With this register setup, we are able to detect transmission errors on each invalid CRC. (no ACK on error).
    With this method, I filled each payload with 31 data Bytes (total packet size : 39 Bytes) and transmitted at a bitrate of 2400bps. For 1000 packets transmitted, I have at least 1 lost packet. Is that normal, for a link which is only 1 or 2 meters long ?
    => 1 packet on 1000 : with the hypothesis we have at least 1 fault bit in the fault packet : BER = 1/(39*12*1000) = 2,1e-6
    Another question : in the API provided by Cypress, almost all functions are defined, and I can easily find the source code for each of them. But i can't find the definition and source code of PLT_Poll() !! And i would like to know how this function works.
    Thank you
    Regards,
    Fabien