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Hello,
I am connecting a USB MSC device to a MSP432E401Y by mean of the Microchip USB3340 ULPI Phy on a custom PCB.
With minor modification I have been able to run the usb_msc_host_MSP_EXP432E401Y_tirtos_ccs exemple and see files from the USB MSC device.
However when I insert a USB hub between the board and the MSC device, the latter is not recognized any longer.
I added all the code required for the Hub Driver and the hub connection is detected (Callback activated).
When I deep dived into the enumeration and mounting (f_mount) process of the MSC device through the hub I see the following:
- the enumeration process seems to work.
- inside f_mount (I changed the last parameter to 1 so that the library checks immediately if the drive is available)
- all the process works OK including the disk_initialize function with all the SCSCI inquire , readsize functions ...
- however when the f_mount tries to read the first sector in the check_fs () function (in ff.c) to check the file system the USBHSCSISendCommand() function sending the read command for the first sector returns 0. Inside this function the USBHCDPipeRead() returns 0 as well as the USBHCDPipeRead(ui32InPipe, (uint8_t *)&sCmdStatus,sizeof(tMSCCSW)); function.
Any idea on how to make ths read work ?
Best regards.
Frederic
