Within USBH_MSC_Write() the USBH_MSC_RdWrProcess(phost, lun) loops. Loop runs into the 10s timeout (see screenshot). USBH_MSC_RdWrProcess(phost, lun) still returns BUSY for this 10s period. Status:MSC_Handle->unit[lun].state is MSC_WRITE MSC_Handle-...