几台PC重启后，DMA缓冲区状态冻结为FULL

大家好，我们正在经历一个问题的奴隶FIFO接口的柏树。我们的设备有2个数据流输入。每个输入缓冲器状态由标志A和B给出（满/不满）。DMAS是自动模式。在PC启动后随机地，旗帜A和B永远粘在一起。在这种情况下，将数据推到系统中是不可能的，除非我们从UB3设备中移除电源。软件FX3复位也消除了问题。MCU仍在运行，因为我们可以使用HID函数来控制设备。我们看了GPIF状态，它似乎不卡在从接口的任何状态。我们试图迫使GPIF“重置”，而不影响这个问题。我们还试图回忆FIFO停止功能（破坏DMA并刷新EP），然后再次调用FIFO启动功能（设置EP，创建DMA并刷新EP MEM），但没有成功。有人见过这种行为吗？？？？谢谢，丹尼斯



     以下为原文
          Hi All, We are experiencing a problem with the SLAVE FIFO interface of Cypress. Our device have 2 data streams inputs. Each input buffer status are given by flags A and B (FULL / NOT FULL). The DMAs are in AUTO mode. Randomly after a PC boot-up, the flags A and B are stuck to FULL forever. In that case, there is no possibility the push data into the system anymore until we remove the power from the USB3 device. A software FX3 Reset removes the problem also. The MCU is still running because we can use the HID function to control the device. We looked at the GPIF states and it seems not to be stuck in any state of the SLAVE interface. We tried to force the GPIF to state "RESET" without in impact on the problem. We also tried to recall the FIFO STOP function (which destroy the DMA and flush the EP), then call back the FIFO START function again (set the EP, create the DMA and flush the EP mem) without success. Does anybody have seen this kind of behavior with some systems??? Thanks, Denis