host USB with SSI in RP2040

[hassan22EL]

Operating System

Windows 10

Board

RP2040 pico

Firmware

usb host

What happened ?

rp2040 host usb and xip ssi problem the rp2040 work a host usb when attached the usb device the program stop after the replace this function (flash-bulk-read) by memcpy and re-try the system normal work note i-used this function to fast read data from flash memory and this function allocate into RAM

please help me to resolve this problem and the code is blew

How to reproduce ?

void __no_inline_not_in_flash_func(flash_bulk_read)(uint32_t *rxbuf, uint32_t flash_offs, size_t len, uint dma_chan) {
    
   
    
     // Configure and start the DMA. Note we are avoiding the dma_*() functions
    // as we can't guarantee they'll be inlined
    dma_hw->ch[dma_chan].read_addr = (uint32_t) & ssi_hw->dr0;
    dma_hw->ch[dma_chan].write_addr = (uint32_t) rxbuf;
    dma_hw->ch[dma_chan].transfer_count = len;
    // SSI must be disabled to set transfer size. If software is executing
    // from flash right now then it's about to have a bad time
    ssi_hw->ssienr = 0;
    ssi_hw->ctrlr1 = len; // NDF, number of data frames
    ssi_hw->dmacr = SSI_DMACR_TDMAE_BITS | SSI_DMACR_RDMAE_BITS;
    ssi_hw->ssienr = 1;
    // Other than NDF, the SSI configuration used for XIP is suitable for a bulk read too.
    
    // Must enable DMA byteswap because non-XIP 32-bit flash transfers are
    // big-endian on SSI (we added a hardware tweak to make XIP sensible)
    dma_hw->ch[dma_chan].ctrl_trig =
            DMA_CH0_CTRL_TRIG_BSWAP_BITS |
            DREQ_XIP_SSIRX << DMA_CH0_CTRL_TRIG_TREQ_SEL_LSB |
            dma_chan << DMA_CH0_CTRL_TRIG_CHAIN_TO_LSB |
            DMA_CH0_CTRL_TRIG_INCR_WRITE_BITS |
            DMA_CH0_CTRL_TRIG_DATA_SIZE_VALUE_SIZE_WORD << DMA_CH0_CTRL_TRIG_DATA_SIZE_LSB |
            DMA_CH0_CTRL_TRIG_EN_BITS;

    // Now DMA is waiting, kick off the SSI transfer (mode continuation bits in LSBs)
    ssi_hw->dr0 = (flash_offs << 8u) | 0xa0; /*address + instruction as 8 bnit*/
    tight_loop_contents();
    tight_loop_contents();
    // Wait for DMA finish
    while (dma_hw->ch[dma_chan].ctrl_trig & DMA_CH0_CTRL_TRIG_BUSY_BITS);
    // Reconfigure SSI before we jump back into flash!
    ssi_hw->ssienr = 0;
    ssi_hw->ctrlr1 = 0; // Single 32-bit data frame per transfer
    ssi_hw->dmacr = 0;
    ssi_hw->ssienr = 1;
}

void rgbScanline(uint16_t y, st_VgaMainData_t *mainData, uint16_t *pixels) {

    static uint32_t index = 0;
   `` if (y == 0) {
        index = 0;
    }
    flash_bulk_read((uint32_t *) & pixels[0], (uint32_t) ((&screen_1024x768_565[0]) + (index * IMAGE_WIDTH)), (IMAGE_WIDTH >> 1), 2);
    index++;



}

the main function

int main() {
    gpio_init(PICO_DEFAULT_LED_PIN);
    gpio_set_dir(PICO_DEFAULT_LED_PIN, GPIO_OUT);
    gpio_put(25, 0);
    /*VGA Init*/
    st_VgaConfig_t config = {0};
    config.stMainParams = vgaGetMainData(VGA_1280_1024_60HZ, 2);
    config.pFunscanlinePixel = rgbScanline;
    vgaInit(config);

    /*USB- Init*/
    usb_init(0); // init with root hub 0

    while (true) {
        usb_host_callback();
        gpio_put(25, 1);
        sleep_ms(100);
        gpio_put(25, 0);
        sleep_ms(100);
    }
}

Debug Log as txt file (LOG/CFG_TUSB_DEBUG=2)

no log

Screenshots

No response

I have checked existing issues, dicussion and documentation

• I confirm I have checked existing issues, dicussion and documentation.