USB host (for MSD) example and test problem at USB1 interface in LPC54618.

[toipaz]

1. Environment:

SDK v2.9.0
CPU: LPC54618
example Code: host_msd_fatfs_freertos

2. Goal: USB 2.0 Host MSD @ USB1 interface

3. Problem

The example code only supports OHCI.

Referring to Datasheet, USB1 is EHCI compliant.
Using EHCI in the example, it is not built with a compile error saying that there is no ehci driver source.

4. Questions

4.1. When using usb1 interface, does it work with ohci?

4.2. Can I specify that the example source uses usb1 interface?

attachement: test project code.

[toipaz]

As I looked at the datasheet and manuals, it says that it uses USB_HOST_CONFIG_IP3516HS.

So

in usb_host_config.h, we test it by changing it as follows.:

#define USB_HOST_CONFIG_OHCI (0U)
#define USB_HOST_CONFIG_IP3516HS (1U)

After that, it'll be waiting forever at the while() statement in usb_host_ip3156hs.c as below.:

static usb_status_t USB_HostIp3516HsControllerReset(usb_host_ip3516hs_state_struct_t *usbHostState)
{
    usbHostState->usbRegBase->USBCMD = USB_HOST_IP3516HS_USBCMD_HCRESET_MASK;
    while (0U != (usbHostState->usbRegBase->USBCMD & USB_HOST_IP3516HS_USBCMD_HCRESET_MASK))
    {
        __NOP();
    }
    return kStatus_USB_Success;
}

The USB1 RESET command is not completed, where should I start to find bug?

[toipaz · Accepted solution]

The USB hw block did not work properly because the GND wiring of the USB circuit was connected incorrectly.
Corrected the GND wiring and it worked normally.