Merge pull request #1102 from kasjer/kasjer/usbd-small-ep0-enumeration-workaround
usbd: Workaround for non standard device descriptor request
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commit
958cf2cfba
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@ -971,9 +971,11 @@ static bool process_get_descriptor(uint8_t rhport, tusb_control_request_t const
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uint16_t len = sizeof(tusb_desc_device_t);
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uint16_t len = sizeof(tusb_desc_device_t);
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// Only send up to EP0 Packet Size if not addressed
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// Only send up to EP0 Packet Size if not addressed and host requested more data
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// that device descriptor has.
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// This only happens with the very first get device descriptor and EP0 size = 8 or 16.
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// This only happens with the very first get device descriptor and EP0 size = 8 or 16.
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if ((CFG_TUD_ENDPOINT0_SIZE < sizeof(tusb_desc_device_t)) && !_usbd_dev.addressed)
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if ((CFG_TUD_ENDPOINT0_SIZE < sizeof(tusb_desc_device_t)) && !_usbd_dev.addressed &&
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((tusb_control_request_t*) p_request)->wLength > sizeof(tusb_desc_device_t))
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{
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{
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len = CFG_TUD_ENDPOINT0_SIZE;
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len = CFG_TUD_ENDPOINT0_SIZE;
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