Configure USB1 on C6748 Starter ware Mass Storage application

Harsha Kandula

Other Parts Discussed in Thread: TMS320C6748

Hi,

I am using TMS320C6748 LCDK and Starterware 1_20_03_03. I am trying to configure the Starter ware example code usb_host_msc.c to use USB1.1 instead of USB OTG. I tried to modify SYS_INT_USB0 to SYS_INT_USB1_HCINT in the code below and changing USB0HostIntHandler accordingly. I am almost sure that is not enough but I wanted to get some suggestions from anybody who was successfull in configuring USB1.1.

All I need is for it is to detect a mass storage device on USB 1.1 the same way it already does on USB OTG.

--Thank You

static void ConfigureIntUSB(void)
{
#ifdef _TMS320C6X
    
    IntDSPINTCInit();
    IntRegister(5, USB0HostIntHandler);
    IntEventMap(5, SYS_INT_USB0);
    IntEnable(5);
    IntGlobalEnable();
.....
}

over 10 years ago

0 Titusrathinaraj Stalin over 10 years ago

TI__Guru** 116100 points

Hi Harsha,

Have you modified the PSC for USB1.1 ?

0 Norman Wong over 10 years ago

Guru 26430 points

On the C6748, USB0 and USB1 are totally different peripherals. USB0 is a Mentor Graphics based while USB1 is OHCI. Last I checked, StarterWare does not have any examples for OHCI.

0 Harsha Kandula over 10 years ago in reply to Norman Wong

Prodigy 75 points

Hi Norman,

Yes, I am aware that Starter ware doesn't have examples for OHCI. I am looking to modify the available examples and configure them for USB 1.

--Thank you

0 Titusrathinaraj Stalin over 10 years ago in reply to Harsha Kandula

TI__Guru** 116100 points

Hi Harsha,

You can see the OHCI include file.

include/hw/hw_usb_ohci.h

0 Harsha Kandula over 10 years ago in reply to Titusrathinaraj Stalin

Prodigy 75 points

Hi Titus,

Thanks for providing the direction. I will try and use the OHCI include file. Will I also need to modify PSC module?

--Thank You.

0 Titusrathinaraj Stalin over 10 years ago in reply to Harsha Kandula

TI__Guru** 116100 points

Hi Harsha,

Yes. We need to enable USB1.1 PSC module.

/* USB1.1 PSC no is 2 */

PSCModuleControl(SOC_PSC_1_REGS,2, 0, PSC_MDCTL_NEXT_ENABLE);

0 Harsha Kandula over 10 years ago in reply to Titusrathinaraj Stalin

Prodigy 75 points

Thank you Titus. I will let you know how it goes.

0 Harsha Kandula over 10 years ago in reply to Titusrathinaraj Stalin

Prodigy 75 points

Hi Titus,

I got side tracked a little bit and later tried to make the changes to get USB OHCI working with a mass storage device plugged in. I am still unable to get it to work right and would like to know if there is an example of any kind for C6748 using USB OHCI that I can use to compare my changes.

Thank You,

Harsha

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Configure USB1 on C6748 Starter ware Mass Storage application