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https://github.com/felis/USB_Host_Shield_2.0.git
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4214caff70
They were mostly the same, I only had to keep the original version of Poll() because while the differences are very small, I don't think that unifying them is possible without needlessly complicating things. For this to work I had to make the private fields of HIDComposite protected instead. I took the "+1" in HIDInterface::epIndex[] from the original HIDUniversal class.
61 lines
2.5 KiB
C++
61 lines
2.5 KiB
C++
/* Copyright (C) 2011 Circuits At Home, LTD. All rights reserved.
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This software may be distributed and modified under the terms of the GNU
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General Public License version 2 (GPL2) as published by the Free Software
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Foundation and appearing in the file GPL2.TXT included in the packaging of
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this file. Please note that GPL2 Section 2[b] requires that all works based
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on this software must also be made publicly available under the terms of
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the GPL2 ("Copyleft").
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Contact information
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-------------------
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Circuits At Home, LTD
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Web : http://www.circuitsathome.com
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e-mail : support@circuitsathome.com
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*/
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#if !defined(__HIDUNIVERSAL_H__)
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#define __HIDUNIVERSAL_H__
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#include "hidcomposite.h"
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class HIDUniversal : public HIDComposite {
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bool SelectInterface(uint8_t iface __attribute__((unused)), uint8_t proto __attribute__((unused))) final {
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// the original HIDUniversal didn't have this at all so make it a no-op
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// (and made it final so users don't override this - if they want to use
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// SelectInterface() they should be deriving from HIDComposite directly)
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return true;
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}
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void ParseHIDData(USBHID *hid, uint8_t ep __attribute__((unused)), bool is_rpt_id, uint8_t len, uint8_t *buf) final {
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// override the HIDComposite version of this method to call the HIDUniversal version
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// (which doesn't use the endpoint), made it final to make sure users
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// of HIDUniversal override the right version of ParseHIDData() (the other one, below)
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ParseHIDData(hid, is_rpt_id, len, buf);
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}
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protected:
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virtual void ParseHIDData(USBHID *hid __attribute__((unused)), bool is_rpt_id __attribute__((unused)), uint8_t len __attribute__((unused)), uint8_t *buf __attribute__((unused))) {
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return;
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}
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public:
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HIDUniversal(USB *p) : HIDComposite(p) {}
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uint8_t Poll() override;
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// UsbConfigXtracter implementation
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void EndpointXtract(uint8_t conf, uint8_t iface, uint8_t alt, uint8_t proto, const USB_ENDPOINT_DESCRIPTOR *ep) override
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{
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// If the first configuration satisfies, the others are not considered.
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if(bNumEP > 1 && conf != bConfNum)
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return;
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// otherwise HIDComposite does what HIDUniversal needs
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HIDComposite::EndpointXtract(conf, iface, alt, proto, ep);
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}
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};
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#endif // __HIDUNIVERSAL_H__
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