YenHung Chen

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10 years ago.

USBHostMSD - Add device failed - Freescale K22F with F401RE-USBHost

I try to read/write USB flash disk on FRDM-K22F, the implement source is USBHostMSD in F401RE-USBHost.

I got the error message: [USB_ERR: libs/USBHostMSD/USBHost/USBHost.cpp:56]ADD DEVICE FAILD parent:0 port:0 speed:full VID:9d9f PID:0000 class:e8 addr:1

The return error place is at line 53 in USBHost::addDevice(USBDeviceConnected* parent, int port, bool lowSpeed) of USBHost.cpp:

USBHost.cpp

    int rc = controlRead(dev, 0x80, GET_DESCRIPTOR, 1<<8, 0, desc, 8);
    USB_TEST_ASSERT(rc == USB_TYPE_OK);
    if (rc != USB_TYPE_OK) {
        USB_ERR("ADD DEVICE FAILD");
    }

The add device step is at line 132 in USBHALHost::init() of USBHALHost_KL46Z.cpp

USBHALHost_KL46Z.cpp

    // Disable IRQ
    NVIC_DisableIRQ(USB0_IRQn);

#if defined(TARGET_K64F)
    MPU->CESR=0;
#endif

    // choose usb src as PLL
    SIM->SOPT2 |= (SIM_SOPT2_USBSRC_MASK | SIM_SOPT2_PLLFLLSEL_MASK);

    // enable OTG clock
    SIM->SCGC4 |= SIM_SCGC4_USBOTG_MASK;

    // USB Module Configuration
    // Reset USB Module
    USB0->USBTRC0 |= USB_USBTRC0_USBRESET_MASK;
    while(USB0->USBTRC0 & USB_USBTRC0_USBRESET_MASK);

    // Clear interrupt flag
    USB0->ISTAT = 0xff;

    // Set BDT Base Register
    USB0->BDTPAGE1=(uint8_t)((uint32_t)bdt>>8);
    USB0->BDTPAGE2=(uint8_t)((uint32_t)bdt>>16);
    USB0->BDTPAGE3=(uint8_t)((uint32_t)bdt>>24);

    // Set SOF threshold
    USB0->SOFTHLD = USB_SOFTHLD_CNT(1);

    // pulldown D+ and D-, enabled
    USB0->USBCTRL = USB_USBCTRL_PDE_MASK;
    
    USB0->USBTRC0 |= 0x40;

    // Host mode
    USB0->CTL |= USB_CTL_HOSTMODEEN_MASK;
    
    // Desable SOF packet generation
    USB0->CTL &= ~USB_CTL_USBENSOFEN_MASK;

    NVIC_SetVector(USB0_IRQn, (uint32_t)_usbisr);
    NVIC_EnableIRQ(USB0_IRQn);
    
    bool lowSpeed = wait_attach();

    for(int retry = 2; retry > 0; retry--) {
        // Enable RESET
        USB0->CTL |= USB_CTL_RESET_MASK;
        wait_ms(500);
        USB0->CTL &= ~USB_CTL_RESET_MASK;
    
        // Enable SOF
        USB0->CTL |= USB_CTL_USBENSOFEN_MASK;
        wait_ms(100);

        // token transfer initialize
        token_transfer_init();

        USB0->INTEN |= USB_INTEN_TOKDNEEN_MASK|
                       USB_INTEN_ERROREN_MASK;
        USB0->ERREN |= USB_ERREN_PIDERREN_MASK|
                       USB_ERREN_CRC5EOFEN_MASK|
                       USB_ERREN_CRC16EN_MASK|
                       USB_ERREN_DFN8EN_MASK|
                       USB_ERREN_BTOERREN_MASK|
                       USB_ERREN_DMAERREN_MASK|
                       USB_ERREN_BTSERREN_MASK;

        if (addDevice(NULL, 0, lowSpeed)) {
            break;
        }

Am I missed any steps? or How can I do further test on the board?

Any advices would be appreciate. Thanks!

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