https://devzone.nordicsemi.com/f/nordic-q-a/80877/usb-composite-not-showing-data-after-a-confirmation-on-sendingHey Team, I was playing around with the composite example, and added in my own class a and used the mouse class to implement it while changing it to suit what i have orgianlly to output to EP3 and removing the subclass_boot/ setting it to be a genericen-USTelligent Community 13Fri, 22 Oct 2021 04:15:01 GMThttps://devzone.nordicsemi.com/thread/335391?ContentTypeID=1Fri, 22 Oct 2021 04:15:01 GMT137ad170-7792-4731-bb38-c0d22fbe4515:f9fd87e7-008c-4db1-a997-b47f063d08b6lolcatsnin<p>Found out the report was the issue. i shouldnt of trusted the setup. !!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/335385?ContentTypeID=1Fri, 22 Oct 2021 03:12:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:73edeb09-d844-4c35-8781-b8be11e04025lolcatsnin<p><pre class="ui-code" data-mode="text">Information for device nRF52 USB HID composite GAMEPAD (VID=0x1915 PID=0x520B): ------------------------------ Connection Information: ------------------------------ Device current bus speed: FullSpeed Device supports USB 1.1 specification Device supports USB 2.0 specification Device address: 0x0008 Current configuration value: 0x01 Number of open pipes: 1 ------------------------------ Device Descriptor: ------------------------------ 0x12 bLength 0x01 bDescriptorType 0x0200 bcdUSB 0x00 bDeviceClass 0x00 bDeviceSubClass 0x00 bDeviceProtocol 0x40 bMaxPacketSize0 (64 bytes) 0x1915 idVendor 0x520B idProduct 0x0100 bcdDevice 0x01 iManufacturer &quot;Nordic Semiconductor&quot; 0x02 iProduct &quot;nRF52 USB HID composite GAMEPAD&quot; 0x03 iSerialNumber &quot;000000000000&quot; 0x01 bNumConfigurations ------------------------- Configuration Descriptor: ------------------------- 0x09 bLength 0x02 bDescriptorType 0x0022 wTotalLength (34 bytes) 0x01 bNumInterfaces 0x01 bConfigurationValue 0x04 iConfiguration &quot;Default configuration&quot; 0xE0 bmAttributes (Self-powered Device, Remote-Wakeup) 0x32 bMaxPower (100 mA) Interface Descriptor: ------------------------------ 0x09 bLength 0x04 bDescriptorType 0x00 bInterfaceNumber 0x00 bAlternateSetting 0x01 bNumEndPoints 0x03 bInterfaceClass (Human Interface Device Class) 0x00 bInterfaceSubClass 0x00 bInterfaceProtocol 0x00 iInterface HID Descriptor: ------------------------------ 0x09 bLength 0x21 bDescriptorType 0x0111 bcdHID 0x00 bCountryCode 0x01 bNumDescriptors 0x22 bDescriptorType (Report descriptor) 0x00BC bDescriptorLength Endpoint Descriptor: ------------------------------ 0x07 bLength 0x05 bDescriptorType 0x81 bEndpointAddress (IN endpoint 1) 0x03 bmAttributes (Transfer: Interrupt / Synch: None / Usage: Data) 0x0040 wMaxPacketSize (1 x 64 bytes) 0x01 bInterval (1 frames) Microsoft OS Descriptor is not available. Error code: 0x0000001F -------------------------------- String Descriptor Table -------------------------------- Index LANGID String 0x00 0x0000 0x0409 0x01 0x0409 &quot;Nordic Semiconductor&quot; 0x02 0x0409 &quot;nRF52 USB HID composite GAMEPAD&quot; 0x03 0x0409 &quot;000000000000&quot; 0x04 0x0409 &quot;Default configuration&quot; ------------------------------ Connection path for device: USB xHCI Compliant Host Controller Root Hub Generic USB Hub nRF52 USB HID composite GAMEPAD (VID=0x1915 PID=0x520B) Port: 4 Running on: Windows 10 or greater (Build Version 19041) Brought to you by TDD v2.17.0, Feb 23 2021, 14:04:02 </pre>attached&nbsp; a description dumper of the device&nbsp;</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/335380?ContentTypeID=1Fri, 22 Oct 2021 01:21:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e537c019-8885-455e-988f-d7223eeaa293lolcatsnin<p>A better question might be&nbsp;<br />1) From looking at how it&#39;s setup the feeddescriptors doesnt seem to be something i would need to modify<br />as it looks as if its pulling alot of data from other locations. Although it then has missing values from the<br />&nbsp;app_usbd_descriptor_configuration_t and&nbsp;app_usbd_descriptor_iface_t..&nbsp;<br /><br />2) is my process for sending data out correct ? im trying to understand where my problem lies as it shows up nicely on the device manager but no data updates.<br /> so i would initially think these an issue with the endpoint<br />and maybe how i used those define functions that those other two examples used, but since those two work fine and have different sized reports but the same setup for the feeddescriptors function im kind of at a loss with what i may of missed.<br /><br /></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/335290?ContentTypeID=1Thu, 21 Oct 2021 11:48:06 GMT137ad170-7792-4731-bb38-c0d22fbe4515:52575a0c-95ea-4c4e-9fd0-5ce61932c98blolcatsnin<p>Hey, thanks for the page. unforutantly thats confused me a tad bit more.<br />If anything i would think the fault would lie within the descriptors function your examples use as i havnt modified them at all (hid_gamepad_feed_descriptors). Although in the example you offered the descriptors are layered out nicely. one think im having a hard time understanding is what value i would be writing to through the protothreads ie:<pre class="ui-code" data-mode="text">static bool hid_gamepad_feed_descriptors(app_usbd_class_descriptor_ctx_t * p_ctx, app_usbd_class_inst_t const * p_inst, uint8_t * p_buff, size_t max_size) { NRF_LOG_INFO(&quot;hid_gamepad_feed_descriptors&quot;); static uint8_t ifaces = 0; ifaces = app_usbd_class_iface_count_get(p_inst); NRF_LOG_INFO(&quot;Number of ifaces are %d&quot;,ifaces); app_usbd_hid_gamepad_t const * p_gamepad = hid_gamepad_get(p_inst); APP_USBD_CLASS_DESCRIPTOR_BEGIN(p_ctx, p_buff, max_size); static uint8_t i = 0; for (i = 0; i &lt; ifaces; i++) { /* INTERFACE DESCRIPTOR */ //Offset Field Size Value Description // 0 bLength 1 Number Size of Descriptor in Bytes APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength // 1 bDescriptionType 1 Constant DescriptorType APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_INTERFACE); // bDescriptorType = Interface static app_usbd_class_iface_conf_t const * p_cur_iface = NULL; p_cur_iface = app_usbd_class_iface_get(p_inst, i); APP_USBD_CLASS_DESCRIPTOR_WRITE(app_usbd_class_iface_number_get(p_cur_iface)); // bInterfaceNumber APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // bAlternateSetting APP_USBD_CLASS_DESCRIPTOR_WRITE(app_usbd_class_iface_ep_count_get(p_cur_iface)); // bNumEndpoints APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_HID_CLASS); // bInterfaceClass = HID // unable to find an alternative APP_USBD_CLASS_DESCRIPTOR_WRITE(p_gamepad-&gt;specific.inst.hid_inst.subclass_boot); // bInterfaceSubclass (Boot Interface) APP_USBD_CLASS_DESCRIPTOR_WRITE(p_gamepad-&gt;specific.inst.hid_inst.protocol); // bInterfaceProtocol APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // iInterface /* HID DESCRIPTOR */ //Offset Field Size Value Description APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength // 1 bDescriptorType 1 Constant Device Descriptor (0x01) APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_HID_DESCRIPTOR_HID); // bDescriptorType = HID // 2 bcdUSB 2 BCD USB Specification Number which device complies too. APP_USBD_CLASS_DESCRIPTOR_WRITE(LSB_16(APP_USBD_HID_BCD_VER)); // bcdHID LSB APP_USBD_CLASS_DESCRIPTOR_WRITE(MSB_16(APP_USBD_HID_BCD_VER)); // bcdHID MSB APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_HID_COUNTRY_NOT_SUPPORTED); // bCountryCode APP_USBD_CLASS_DESCRIPTOR_WRITE(hid_gamepad_get_class_descriptors_count(p_inst)); // bNumDescriptors static uint8_t class_desc_cnt = 0; class_desc_cnt = hid_gamepad_get_class_descriptors_count(p_inst); static uint8_t j = 0; static uint16_t class_desc_len = 0; for (j = 0; j &lt; class_desc_cnt; j++) { APP_USBD_CLASS_DESCRIPTOR_WRITE(hid_gamepad_get_class_descriptors_type(p_inst, j)); // bDescriptorType class_desc_len = hid_gamepad_get_class_descriptors_length(p_inst, j); APP_USBD_CLASS_DESCRIPTOR_WRITE(LSB_16(class_desc_len)); // wDescriptorLength LSB APP_USBD_CLASS_DESCRIPTOR_WRITE(MSB_16(class_desc_len)); // wDescriptorLength MSB } static uint8_t endpoints = 0; endpoints = app_usbd_class_iface_ep_count_get(p_cur_iface); for (j = 0; j &lt; endpoints; j++) { /* ENDPOINT DESCRIPTOR */ APP_USBD_CLASS_DESCRIPTOR_WRITE(0x07); // bLength APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_ENDPOINT); // bDescriptorType = Endpoint static app_usbd_class_ep_conf_t const * p_cur_ep = NULL; p_cur_ep = app_usbd_class_iface_ep_get(p_cur_iface, j); APP_USBD_CLASS_DESCRIPTOR_WRITE(app_usbd_class_ep_address_get(p_cur_ep)); // bEndpointAddress APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_DESCRIPTOR_EP_ATTR_TYPE_INTERRUPT); // bmAttributes APP_USBD_CLASS_DESCRIPTOR_WRITE(LSB_16(NRF_DRV_USBD_EPSIZE)); // wMaxPacketSize LSB APP_USBD_CLASS_DESCRIPTOR_WRITE(MSB_16(NRF_DRV_USBD_EPSIZE)); // wMaxPacketSize MSB APP_USBD_CLASS_DESCRIPTOR_WRITE(p_gamepad-&gt;specific.inst.hid_inst.p_ep_interval[j]); // bInterval } } APP_USBD_CLASS_DESCRIPTOR_END(); }</pre><br />Then comparing the examples setup:&nbsp;<br /><pre class="ui-code" data-mode="text">/** Maximum size of the packed transfered by EP0 */ #define EP0_MAXPACKETSIZE NRF_DRV_USBD_EPSIZE /** Device descriptor */ #define USBD_DEVICE_DESCRIPTOR \ 0x12, /* bLength | size of descriptor */\ 0x01, /* bDescriptorType | descriptor type */\ 0x00, 0x02, /* bcdUSB | USB spec release (ver 2.0) */\ 0x00, /* bDeviceClass &#194;&#166; class code (each interface specifies class information) */\ 0x00, /* bDeviceSubClass &#194;&#166; device sub-class (must be set to 0 because class code is 0) */\ 0x00, /* bDeviceProtocol | device protocol (no class specific protocol) */\ EP0_MAXPACKETSIZE, /* bMaxPacketSize0 | maximum packet size (64 bytes) */\ 0x15, 0x19, /* vendor ID (0x1915 Nordic) */\ 0x0B, 0x52, /* product ID (0x520B nRF52 HID mouse on nrf_drv) */\ 0x01, 0x01, /* bcdDevice | final device release number in BCD Format */\ USBD_STRING_MANUFACTURER_IX, /* iManufacturer | index of manufacturer string */\ USBD_STRING_PRODUCT_IX, /* iProduct | index of product string */\ USBD_STRING_SERIAL_IX, /* iSerialNumber | Serial Number string */\ 0x01 /* bNumConfigurations | number of configurations */ /** Configuration descriptor */ #define DEVICE_SELF_POWERED 1 #define REMOTE_WU 1 #define USBD_CONFIG_DESCRIPTOR_SIZE 9 #define USBD_CONFIG_DESCRIPTOR_FULL_SIZE (9 + (9 + 9 + 7) + (9 + 9 + 7 + 7)) // 66 #define USBD_CONFIG_DESCRIPTOR \ 0x09, /* bLength | length of descriptor */\ 0x02, /* bDescriptorType | descriptor type (CONFIGURATION) */\ USBD_CONFIG_DESCRIPTOR_FULL_SIZE, 0x00, /* wTotalLength | total length of descriptor(s) */\ 0x02, /* bNumInterfaces */\ 0x01, /* bConfigurationValue */\ 0x00, /* index of string Configuration | configuration string index (not supported) */\ 0x80| (((DEVICE_SELF_POWERED) ? 1U:0U)&lt;&lt;6) | (((REMOTE_WU) ? 1U:0U)&lt;&lt;5), /* bmAttributes */\ 49 /* maximum power in steps of 2mA (98mA) */ #define USBD_INTERFACE0_DESCRIPTOR \ 0x09, /* bLength */\ 0x04, /* bDescriptorType | descriptor type (INTERFACE) */\ 0x00, /* bInterfaceNumber */\ 0x00, /* bAlternateSetting */\ 0x01, /* bNumEndpoints | number of endpoints (1) */\ 0x03, /* bInterfaceClass | interface class (3..defined by USB spec: HID) */\ 0x00, /* bInterfaceSubClass |interface sub-class (0.. no boot interface) */\ 0x02, /* bInterfaceProtocol | interface protocol (1..defined by USB spec: mouse) */\ 0x00 /* interface string index (not supported) */ /** * HID Table must normally be between Interface and EndPoint Descriptor * as written in HID spec&#194;&#167;7.1 but it doesn&#39;t work with OSR2.1 */ #define USBD_HID0_DESCRIPTOR \ 0x09, /* bLength | length of descriptor (9 bytes) */\ 0x21, /* bHIDDescriptor | descriptor type (HID) */\ 0x11, 0x01, /* HID wBcdHID | Spec version 01.11 */\ 0x00, /* bCountryCode | HW Target country */\ 0x01, /* bNumDescriptors | Number of HID class descriptors to follow */\ 0x22, /* bDescriptorType | Report descriptor type is 0x22 (report) */\ (uint8_t)(USBD_MOUSE_REPORT_DESCRIPTOR_SIZE), /* Total length of Report descr., low byte */ \ (uint8_t)(USBD_MOUSE_REPORT_DESCRIPTOR_SIZE / 256) /* Total length of Report descr., high byte */ #define USBD_ENDPOINT1_DESCRIPTOR \ 0x07, /* bLength | length of descriptor (7 bytes) */\ 0x05, /* bDescriptorType | descriptor type (ENDPOINT) */\ 0x81, /* bEndpointAddress | endpoint address (IN endpoint, endpoint 1) */\ 0x03, /* bmAttributes | endpoint attributes (interrupt) */\ 0x08,0x00, /* bMaxPacketSizeLowByte,bMaxPacketSizeHighByte | maximum packet size (8 bytes) */\ 0x08 /* bInterval | polling interval (10ms) */ #define USBD_INTERFACE1_DESCRIPTOR \ 0x09, /* bLength */\ 0x04, /* bDescriptorType | descriptor type (INTERFACE) */\ 0x01, /* bInterfaceNumber */\ 0x00, /* bAlternateSetting */\ 0x02, /* bNumEndpoints | number of endpoints (2) */\ 0x03, /* bInterfaceClass | interface class (3..defined by USB spec: HID) */\ 0x00, /* bInterfaceSubClass |interface sub-class (0.. no boot interface) */\ 0x00, /* bInterfaceProtocol | interface protocol (1..defined by USB spec: mouse) */\ 0x00 /* interface string index (not supported) */ #define USBD_HID1_DESCRIPTOR \ 0x09, /* bLength | length of descriptor (9 bytes) */\ 0x21, /* bHIDDescriptor | descriptor type (HID) */\ 0x11, 0x01, /* HID wBcdHID | Spec version 01.11 */\ 0x00, /* bCountryCode | HW Target country */\ 0x01, /* bNumDescriptors | Number of HID class descriptors to follow */\ 0x22, /* bDescriptorType | Report descriptor type is 0x22 (report) */\ (uint8_t)(USBD_CUSTOM_REPORT_DESCRIPTOR_SIZE), /* Total length of Report descr., low byte */ \ (uint8_t)(USBD_CUSTOM_REPORT_DESCRIPTOR_SIZE / 256) /* Total length of Report descr., high byte */ #define USBD_ENDPOINT2_DESCRIPTOR \ 0x07, /* bLength | length of descriptor (7 bytes) */\ 0x05, /* bDescriptorType | descriptor type (ENDPOINT) */\ 0x82, /* bEndpointAddress | endpoint address (IN endpoint, endpoint 2) */\ 0x03, /* bmAttributes | endpoint attributes (interrupt) */\ 0x40,0x00, /* bMaxPacketSizeLowByte,bMaxPacketSizeHighByte | maximum packet size (64 bytes) */\ 0x08 /* bInterval | polling interval (10ms) */ #define USBD_ENDPOINT2_OUT_DESCRIPTOR \ 0x07, /* bLength | length of descriptor (7 bytes) */\ 0x05, /* bDescriptorType | descriptor type (ENDPOINT) */\ 0x02, /* bEndpointAddress | endpoint address (OUT endpoint, endpoint 2) */\ 0x03, /* bmAttributes | endpoint attributes (interrupt) */\ 0x40,0x00, /* bMaxPacketSizeLowByte,bMaxPacketSizeHighByte | maximum packet size (64 bytes) */\ 0x08 /* bInterval | polling interval (10ms) */ </pre></p> <p>im currently trying to make sense of how things are sorted out from the app_usbd_core.c file<br />regarding<br /><pre class="ui-code" data-mode="text">#define APP_USBD_CORE_DEVICE_DESCRIPTOR { \ .bLength = sizeof(app_usbd_descriptor_device_t), /* descriptor size */ \ .bDescriptorType = APP_USBD_DESCRIPTOR_DEVICE, /* descriptor type */ \ .bcdUSB = APP_USBD_BCD_VER_MAKE(2,0,0), /* USB BCD version: 2.0 */ \ .bDeviceClass = 0, /* device class: 0 - specified by interface */ \ .bDeviceSubClass = 0, /* device subclass: 0 - specified by interface */ \ .bDeviceProtocol = 0, /* device protocol: 0 - specified by interface */ \ .bMaxPacketSize0 = NRF_DRV_USBD_EPSIZE, /* endpoint size: fixed to: NRF_DRV_USBD_EPSIZE*/ \ .idVendor = APP_USBD_VID, /* Vendor ID*/ \ .idProduct = APP_USBD_PID, /* Product ID*/ \ .bcdDevice = APP_USBD_BCD_VER_MAKE( /* Device version BCD */ \ APP_USBD_DEVICE_VER_MAJOR, \ APP_USBD_DEVICE_VER_MINOR, \ APP_USBD_DEVICE_VER_SUB), \ .iManufacturer = APP_USBD_STRING_ID_MANUFACTURER, /* String ID: manufacturer */ \ .iProduct = APP_USBD_STRING_ID_PRODUCT, /* String ID: product */ \ .iSerialNumber = APP_USBD_STRING_ID_SERIAL, /* String ID: serial */ \ .bNumConfigurations = 1 /* Fixed value: only one configuration supported*/\ } #define APP_USBD_CORE_CONFIGURATION_DESCRIPTOR { \ .bLength = sizeof(app_usbd_descriptor_configuration_t), \ .bDescriptorType = APP_USBD_DESCRIPTOR_CONFIGURATION, \ .wTotalLength = 0, /*Calculated dynamically*/ \ .bNumInterfaces = 0, /*Calculated dynamically*/ \ .bConfigurationValue = 1, /*Value passed to set configuration*/ \ .iConfiguration = APP_USBD_STRING_ID_CONFIGURATION, /*Configuration ID*/ \ .bmAttributes = APP_USBD_DESCRIPTOR_CONFIGURATION_ATTRIBUTE_ALWAYS_SET_MASK | \ ((APP_USBD_CONFIG_SELF_POWERED) ? \ APP_USBD_DESCRIPTOR_CONFIGURATION_ATTRIBUTE_SELF_POWERED_MASK \ : \ 0), \ .bMaxPower = APP_USBD_POWER_MAKE(APP_USBD_CONFIG_MAX_POWER), \ } </pre><br /><br />am i on the right path regarding this being the issue ?<br /><br />i also noticed changing the endpoint of my setup to 0 kills it.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/335216?ContentTypeID=1Thu, 21 Oct 2021 08:14:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d569fe1a-243e-4359-b3cf-b061507141b2Kenneth<p>Hi,</p> <p>Can you take a look at this example and use it as a basis for adding your gamepad descriptor?<br /><a href="https://github.com/too1/nrf52-usbd-custom-hid-ep">https://github.com/too1/nrf52-usbd-custom-hid-ep</a></p> <p>Best regards,<br />Kenneth</p><div style="clear:both;"></div>