TMS320F28069M USB Question

Hi David,

Did you refer F29069 TRM from it Homepage under Technical Documents?

In that manual they've clearly mentioned about the interface:

Regards,

Gautam

Yes I did refer to that diagram, please see my original post, I actually talked about it in the post :]

As there is no example code I have found for this interface. There is a lot of example code for the Launchpad, however its USB-DP and DM are not connected to the USB.

David Ledger said:

As there is no example code I have found for this interface.

I guess you got the example codes wrong.They're pretty much meant for pure USB communication!

If you go through usb_dev_bulk, its meant for USB bulk transfer (no ftdi required). FTDI based communication ie from SCI0 is used only to display the communication status of USB communication. Also, for these USB examples you very much need USB drivers that are available here: C:\ti\controlSUITE\device_support\f2806x\v141\MWare\windows_drivers

Please go through the USB docs present here: C:\ti\controlSUITE\device_support\f2806x\v141\doc

Regards,

Gautam

Hello,

I have done as you described, actually I tried this earlier. But couldn't figure out why it wasn't working. I noticed that on the launchpad for this micro the usb wasn't even connected so assumed the code wouldn't work.

If the example bulk code is meant to work after i setup the clock why do I get a code 41 when I plug in device. I have attempted to install drivers but nothing.

void SysCtrlInit(void)
{

    EALLOW;
    //Disable Watchdog
    SysCtrlRegs.WDCR = 0x68;

    //Setup Clock
    //8MHz ->PLL->80MHz->C28
    //      ->PLL2->120MHz->USB
  //  SysCtrlRegs
    DevEmuRegs.DEVICECNF.bit.SYSCLK2DIV2DIS = 0;
    SysCtrlRegs.CLKCTL.bit.XCLKINOFF = 1;
    SysCtrlRegs.CLKCTL.bit.XTALOSCOFF = 0;
    SysCtrlRegs.CLKCTL.bit.OSCCLKSRC2SEL = 0;
    SysCtrlRegs.CLKCTL.bit.OSCCLKSRCSEL = 1;

    while(SysCtrlRegs.PLLSTS.bit.MCLKSTS);
    SysCtrlRegs.PLLSTS.bit.DIVSEL	= 0;		//4 = 2MHz
    SysCtrlRegs.PLLSTS.bit.MCLKOFF 	= 1;		//
    SysCtrlRegs.PLLCR.bit.DIV 		= 10;		//	= 20MHz
    while(!SysCtrlRegs.PLLSTS.bit.PLLLOCKS);
    SysCtrlRegs.PLLSTS.bit.MCLKOFF 	= 1;		//Enable Clk
    SysCtrlRegs.PLLSTS.bit.DIVSEL 	= 3;		//80MHz


    SysCtrlRegs.PLL2CTL.bit.PLL2CLKSRCSEL 	= 2;
    SysCtrlRegs.PLL2CTL.bit.PLL2EN 			= 1;
    SysCtrlRegs.PLL2MULT.bit.PLL2MULT		= 15;
    while(!SysCtrlRegs.PLL2STS.bit.PLL2LOCKS);

    //Enable USB Clock
    SysCtrlRegs.PCLKCR3.bit.USB0ENCLK = 1;
    //Enable PHY
    GpioCtrlRegs.GPACTRL2.bit.USB0IOEN = 1;

    EDIS;
}