153 lines
6.6 KiB
C
153 lines
6.6 KiB
C
/*
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* The MIT License (MIT)
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*
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* Copyright (c) 2019 Ha Thach (tinyusb.org)
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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* This file is part of the TinyUSB stack.
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*/
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#ifndef _TUSB_HID_HOST_H_
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#define _TUSB_HID_HOST_H_
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#include "hid.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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//--------------------------------------------------------------------+
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// Class Driver Configuration
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//--------------------------------------------------------------------+
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// TODO Highspeed interrupt can be up to 512 bytes
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#ifndef CFG_TUH_HID_EPIN_BUFSIZE
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#define CFG_TUH_HID_EPIN_BUFSIZE 64
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#endif
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#ifndef CFG_TUH_HID_EPOUT_BUFSIZE
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#define CFG_TUH_HID_EPOUT_BUFSIZE 64
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#endif
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typedef struct
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{
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uint8_t report_id;
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uint8_t usage;
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uint16_t usage_page;
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// TODO still use the endpoint size for now
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// uint8_t in_len; // length of IN report
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// uint8_t out_len; // length of OUT report
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} tuh_hid_report_info_t;
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//--------------------------------------------------------------------+
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// Interface API
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//--------------------------------------------------------------------+
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// Get the number of HID instances
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uint8_t tuh_hid_instance_count(uint8_t dev_addr);
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// Check if HID instance is mounted
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bool tuh_hid_mounted(uint8_t dev_addr, uint8_t instance);
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// Get interface supported protocol (bInterfaceProtocol) check out hid_interface_protocol_enum_t for possible values
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uint8_t tuh_hid_interface_protocol(uint8_t dev_addr, uint8_t instance);
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// Parse report descriptor into array of report_info struct and return number of reports.
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// For complicated report, application should write its own parser.
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uint8_t tuh_hid_parse_report_descriptor(tuh_hid_report_info_t* reports_info_arr, uint8_t arr_count, uint8_t const* desc_report, uint16_t desc_len) TU_ATTR_UNUSED;
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//--------------------------------------------------------------------+
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// Control Endpoint API
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//--------------------------------------------------------------------+
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// Get current protocol: HID_PROTOCOL_BOOT (0) or HID_PROTOCOL_REPORT (1)
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// Note: Device will be initialized in Boot protocol for simplicity.
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// Application can use set_protocol() to switch back to Report protocol.
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uint8_t tuh_hid_get_protocol(uint8_t dev_addr, uint8_t instance);
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// Set protocol to HID_PROTOCOL_BOOT (0) or HID_PROTOCOL_REPORT (1)
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// This function is only supported by Boot interface (tuh_n_hid_interface_protocol() != NONE)
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bool tuh_hid_set_protocol(uint8_t dev_addr, uint8_t instance, uint8_t protocol);
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// Set Report using control endpoint
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// report_type is either Input, Output or Feature, (value from hid_report_type_t)
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bool tuh_hid_set_report(uint8_t dev_addr, uint8_t instance, uint8_t report_id, uint8_t report_type, void* report, uint16_t len);
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//--------------------------------------------------------------------+
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// Interrupt Endpoint API
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//--------------------------------------------------------------------+
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// Check if the interface is ready to use
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//bool tuh_n_hid_n_ready(uint8_t dev_addr, uint8_t instance);
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// Try to receive next report on Interrupt Endpoint. Immediately return
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// - true If succeeded, tuh_hid_report_received_cb() callback will be invoked when report is available
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// - false if failed to queue the transfer e.g endpoint is busy
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bool tuh_hid_receive_report(uint8_t dev_addr, uint8_t instance);
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// Send report using interrupt endpoint
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// If report_id > 0 (composite), it will be sent as 1st byte, then report contents. Otherwise only report content is sent.
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//void tuh_hid_send_report(uint8_t dev_addr, uint8_t instance, uint8_t report_id, uint8_t const* report, uint16_t len);
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//--------------------------------------------------------------------+
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// Callbacks (Weak is optional)
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//--------------------------------------------------------------------+
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// Invoked when device with hid interface is mounted
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// Report descriptor is also available for use. tuh_hid_parse_report_descriptor()
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// can be used to parse common/simple enough descriptor.
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// Note: if report descriptor length > CFG_TUH_ENUMERATION_BUFSIZE, it will be skipped
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// therefore report_desc = NULL, desc_len = 0
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void tuh_hid_mount_cb(uint8_t dev_addr, uint8_t instance, uint8_t const* report_desc, uint16_t desc_len);
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// Invoked when device with hid interface is un-mounted
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TU_ATTR_WEAK void tuh_hid_umount_cb(uint8_t dev_addr, uint8_t instance);
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// Invoked when received report from device via interrupt endpoint
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// Note: if there is report ID (composite), it is 1st byte of report
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void tuh_hid_report_received_cb(uint8_t dev_addr, uint8_t instance, uint8_t const* report, uint16_t len);
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// Invoked when sent report to device successfully via interrupt endpoint
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TU_ATTR_WEAK void tuh_hid_report_sent_cb(uint8_t dev_addr, uint8_t instance, uint8_t const* report, uint16_t len);
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// Invoked when Sent Report to device via either control endpoint
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// len = 0 indicate there is error in the transfer e.g stalled response
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TU_ATTR_WEAK void tuh_hid_set_report_complete_cb(uint8_t dev_addr, uint8_t instance, uint8_t report_id, uint8_t report_type, uint16_t len);
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// Invoked when Set Protocol request is complete
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TU_ATTR_WEAK void tuh_hid_set_protocol_complete_cb(uint8_t dev_addr, uint8_t instance, uint8_t protocol);
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//--------------------------------------------------------------------+
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// Internal Class Driver API
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//--------------------------------------------------------------------+
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void hidh_init (void);
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bool hidh_open (uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *desc_itf, uint16_t max_len);
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bool hidh_set_config (uint8_t dev_addr, uint8_t itf_num);
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bool hidh_xfer_cb (uint8_t dev_addr, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes);
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void hidh_close (uint8_t dev_addr);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _TUSB_HID_HOST_H_ */
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