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Issues with writing my own project that communicates with a computer over USB.

ryerye120

Hi,

I've been trying to combine the spi_slave and USB_CDC_ADM examples so that I can pipe data from a spi_master all the way to my host machine. In my cobbled together project, the SPI transactions are working, but the USB isn't being properly sensed by my machine. I keep seeing this in my device manager:

The USB_CDC_ADM example works just fine though.

Any ideas on what I'm messing up? Thank you!

  • 0

    Hi Rye, 

    Could you check what's the issue with the nRF52 USB Product (right click and click properties)
    I would suggest to comment out the SPI functionality part by part until you see the USB work again, this way we can track down what caused the issue. 


  • 0 in reply to Hung Bui

    I think it has to do with something in my sdk_config.h. I've removed most of the SPI code now. Aside from defining the SPI handler and enabling the SPI in the SDK_config, the SPI isn't doing anything (i.e. no SPI code in my main). I have the same issue.

    I took a look at the properties tab and there are two events. I've copied both below:

    The first one (Driver name is 'null' which seems like a problem. The drivers should be installed!):

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    Device USB\VID_1915&PID_520C\000000000000 was configured.
    Driver Name: null
    Class Guid: {00000000-0000-0000-0000-000000000000}
    Driver Date:
    Driver Version:
    Driver Provider:
    Driver Section:
    Driver Rank: 0x0
    Matching Device Id:
    Outranked Drivers:
    Device Updated: false
    Parent Device: USB\VID_045E&PID_0944\6&15ba3093&0&1
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

    The second one:

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    Device USB\VID_1915&PID_520C\000000000000 was not migrated due to partial or ambiguous match.
    Last Device Instance Id: USB\VID_0403&PID_6010\003017A40B1B
    Class Guid: {36fc9e60-c465-11cf-8056-444553540000}
    Location Path: PCIROOT(0)#PCI(1400)#USBROOT(0)#USB(1)#USB(1)#USB(2)
    Migration Rank: 0xF000FFFFFFFF0123
    Present: false
    Status: 0xC0000719
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

    So it seems maybe I'm messing up some USB params in my sdk_config.h? I'll take a more extensive look through it right now.

  • 0 in reply to Hung Bui

    Okay, the problem was that I wasn't running app_usbd_event_queue_process() to actually process any USB events. I must have accidentally forgotten to copy it over. I have a new issue though. 

    I've set up two dev kits, a SPI master & a SPI slave. The Master sends a message "comes_from_spi_mstr" to the slave, which then pipes it to my desktop via USB. What's weird is that the message makes its way to my computer (I see "comes_from_spi_mstr" on computer from the USB's COM port)... but when I print the SPI's rx buffer through the logger it comes up empty.

    Here are photos to show what's happening:

    SPI logger output:

    USB output:

    Any idea why it's not coming up in the logger, despite being there (as shown by making its way all the way through the USB).

    Thanks,

    Ryan

  • 0 in reply to ryerye120

    Hi, 
    Please post your code, and state which SDK you are using. 
    Please track down on how you pass the data from SPI to USB.

  • 0 in reply to Hung Bui

    Hi Hung,

    I've attached my main.c and sdkconfig.h. I'm using nRF5 SDK v16.0.0.

    As fare as how data is being passed from the SPI to the USB, I'm just taking the SPI_rx buffer and sprintf-ing it into the USB_tx buffer (corresponding lines copied below):

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    size_t size = sprintf(m_tx_buffer, "Hello USB CDC demo: %s\r\n", (uint32_t)spi_rx_buf);
    app_usbd_cdc_acm_write(&m_app_cdc_acm, m_tx_buffer, size);
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

     

    Fullscreen 4532.main.c Download
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    /**
    * Copyright (c) 2017 - 2019, Nordic Semiconductor ASA
    *
    * All rights reserved.
    *
    * Redistribution and use in source and binary forms, with or without modification,
    * are permitted provided that the following conditions are met:
    *
    * 1. Redistributions of source code must retain the above copyright notice, this
    * list of conditions and the following disclaimer.
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    * 2. Redistributions in binary form, except as embedded into a Nordic
    * Semiconductor ASA integrated circuit in a product or a software update for
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    *
    * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
    * contributors may be used to endorse or promote products derived from this
    XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
    6685.sdk_config.h

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