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2028230_zh-CN
2028230_zh-CN
Hello,
最近，我研究了您基于 cdc_vcom 示例的非常有用的用户定义设备类应用说明： https://www.nxp.com/docs/en/application-note/AN14169.pdf
代码按照我预期的方式运行，除了当我修改 AppTask 以在将响应发送回主机之前接收多个数据包时。
似乎 USB 堆栈强制对每个 Recv 进行发送，其他用户已经注意到了这一点（例如https://community.nxp.com/t5/i-MX-RT-Crossover-MCUs/ESC-character-in-virtual-com-port-example/mp/115... ）。
有没有办法修改堆栈以允许多次连续的 Recv？
谢谢，
Alex
Hi @EdwinHz,
啊，我明白了，在这种情况下我会采取一种解决方法。
感谢您的快速回复，您为我节省了大量的调试时间！
干杯，
Alex
Hi @akspurr,
不幸的是，堆栈被设计为在每次接收后进行发送，因此不应对 USB 堆栈进行任何修改以防止这种行为。
BR,
Edwin.
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