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- /**
- * Copyright (c) 2016 - 2020, 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.
- *
- * 2. Redistributions in binary form, except as embedded into a Nordic
- * Semiconductor ASA integrated circuit in a product or a software update for
- * such product, must reproduce the above copyright notice, this list of
- * conditions and the following disclaimer in the documentation and/or other
- * materials provided with the distribution.
- *
- * 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
- * software without specific prior written permission.
- *
- * 4. This software, with or without modification, must only be used with a
- * Nordic Semiconductor ASA integrated circuit.
- *
- * 5. Any software provided in binary form under this license must not be reverse
- * engineered, decompiled, modified and/or disassembled.
- *
- * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
- * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
- * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
- #include "sdk_common.h"
- #if NRF_MODULE_ENABLED(APP_USBD_HID_MOUSE)
- #include <string.h>
- #include "app_usbd_hid_mouse.h"
- #include "app_util_platform.h"
- /**
- * @defgroup app_usbd_hid_mouse_internal USBD HID Mouse internals
- * @{
- * @ingroup app_usbd_hid_mouse
- * @internal
- */
- /**
- * @brief Auxiliary function to access HID mouse context data.
- *
- * @param[in] p_inst class instance data.
- *
- * @return HID mouse instance data context.
- */
- static inline app_usbd_hid_mouse_ctx_t * hid_mouse_ctx_get(app_usbd_hid_mouse_t const * p_mouse)
- {
- ASSERT(p_mouse != NULL);
- ASSERT(p_mouse->specific.p_data != NULL);
- return &p_mouse->specific.p_data->ctx;
- }
- /**
- * @brief Auxiliary function to access HID mouse instance data.
- *
- * @param[in] p_inst class instance data.
- *
- * @return HID mouse instance.
- */
- static inline app_usbd_hid_mouse_t const * hid_mouse_get(app_usbd_class_inst_t const * p_inst)
- {
- ASSERT(p_inst != NULL);
- return (app_usbd_hid_mouse_t const *)p_inst;
- }
- /**
- * @brief Returns mouse report buffer handle.
- *
- * @param[in] p_kbd HID keyboard instance.
- *
- * @return HID report buffer.
- */
- static inline
- app_usbd_hid_report_buffer_t const * hid_mouse_rep_buffer_get(app_usbd_hid_mouse_t const * p_mouse)
- {
- ASSERT(p_mouse != NULL);
- app_usbd_hid_inst_t const * p_hinst = &p_mouse->specific.inst.hid_inst;
- app_usbd_hid_mouse_ctx_t * p_mouse_ctx = hid_mouse_ctx_get(p_mouse);
- app_usbd_hid_report_buffer_t * p_rep_buff = app_usbd_hid_rep_buff_in_get(p_hinst);
- p_rep_buff->p_buff = p_mouse_ctx->report_buff;
- p_rep_buff->size = sizeof(p_mouse_ctx->report_buff);
- /*Mouse has only one report input report buffer */
- return app_usbd_hid_rep_buff_in_get(p_hinst);
- }
- /**@brief Auxiliary function to get report value from internal accumulated value.
- *
- * @param[in] acc Accumulated XY axis or scroll.
- *
- * @return Offset value that could be written directly to report buffer.
- */
- static inline int8_t hid_mouse_axis_acc_get(int16_t acc)
- {
- if (acc > INT8_MAX)
- {
- return INT8_MAX;
- }
- if (acc < INT8_MIN)
- {
- return INT8_MIN;
- }
- return acc;
- }
- /**@brief Auxiliary function to prepare report transfer buffer to next transfer.
- *
- * @param[in] p_mouse_ctx Mouse internal context.
- *
- * @retval true Next transfer is required.
- * @retval false Next transfer is not required.
- */
- static inline bool hid_mouse_transfer_next(app_usbd_hid_mouse_t const * p_mouse)
- {
- app_usbd_hid_mouse_ctx_t * p_mouse_ctx = hid_mouse_ctx_get(p_mouse);
- app_usbd_hid_report_buffer_t const * p_rep_buffer = hid_mouse_rep_buffer_get(p_mouse);
- uint8_t * p_buff = p_rep_buffer->p_buff;
- /*Save last buttons state*/
- uint8_t last_button_state = p_buff[0];
- /*Button state*/
- p_buff[0] = p_mouse_ctx->button_state;
- /*Axis X*/
- int8_t val_x = hid_mouse_axis_acc_get(p_mouse_ctx->acc_x_axis);
- p_mouse_ctx->acc_x_axis -= val_x;
- p_buff[1] = val_x;
- /*Axis Y*/
- int8_t val_y = hid_mouse_axis_acc_get(p_mouse_ctx->acc_y_axis);
- p_mouse_ctx->acc_y_axis -= val_y;
- p_buff[2] = val_y;
- /*Scroll*/
- int8_t val_scroll = hid_mouse_axis_acc_get(p_mouse_ctx->acc_scroll);
- p_mouse_ctx->acc_scroll -= val_scroll;
- p_buff[3] = val_scroll;
- if (val_x || val_y || val_scroll)
- {
- /*New transfer is required if any of mouse relative position is not zero*/
- return true;
- }
- if (last_button_state != p_buff[0])
- {
- /*New transfer is required if button state has changed*/
- return true;
- }
- return false;
- }
- /**
- * @brief Triggers IN endpoint transfer.
- *
- * @param[in] p_mouse HID mouse instance.
- *
- * @return Standard error code.
- */
- static inline ret_code_t hid_mouse_transfer_set(app_usbd_hid_mouse_t const * p_mouse)
- {
- app_usbd_class_inst_t const * p_inst = (app_usbd_class_inst_t const *)p_mouse;
- app_usbd_hid_mouse_ctx_t * p_mouse_ctx = hid_mouse_ctx_get(p_mouse);
- nrf_drv_usbd_ep_t ep_addr = app_usbd_hid_epin_addr_get(p_inst);
- app_usbd_hid_state_flag_clr(&p_mouse_ctx->hid_ctx, APP_USBD_HID_STATE_FLAG_TRANS_IN_PROGRESS);
- if (!hid_mouse_transfer_next(p_mouse))
- {
- /* Transfer buffer hasn't changed since last transfer. No need to setup
- * next transfer.
- * */
- return NRF_SUCCESS;
- }
- app_usbd_hid_report_buffer_t const * p_rep_buffer = hid_mouse_rep_buffer_get(p_mouse);
- NRF_DRV_USBD_TRANSFER_IN(transfer, p_rep_buffer->p_buff, p_rep_buffer->size);
- ret_code_t ret;
- CRITICAL_REGION_ENTER();
- ret = app_usbd_ep_transfer(ep_addr, &transfer);
- if (ret == NRF_SUCCESS)
- {
- app_usbd_hid_state_flag_set(&p_mouse_ctx->hid_ctx,
- APP_USBD_HID_STATE_FLAG_TRANS_IN_PROGRESS);
- }
- CRITICAL_REGION_EXIT();
- return ret;
- }
- /**
- * @brief Checks if adding would cause 16 bit signed integer overflow.
- *
- * @param[in] acc Signed 16 bit accumulator to test.
- * @param[in] value Value to add to accumulator.
- *
- * @retval true Overflow detected.
- * @retval false No overflow detected.
- */
- static inline bool hid_mouse_acc_overflow_check(int16_t acc, int8_t val)
- {
- if (((int32_t)acc + val) > INT16_MAX)
- {
- return true;
- }
- if (((int32_t)acc + val) < INT16_MIN)
- {
- return true;
- }
- return false;
- }
- ret_code_t app_usbd_hid_mouse_x_move(app_usbd_hid_mouse_t const * p_mouse, int8_t offset)
- {
- app_usbd_hid_mouse_ctx_t * p_mouse_ctx = hid_mouse_ctx_get(p_mouse);
- if (!app_usbd_hid_state_valid(&p_mouse_ctx->hid_ctx))
- {
- return NRF_ERROR_INVALID_STATE;
- }
- if (offset == 0)
- {
- /*No position change*/
- return NRF_SUCCESS;
- }
- if (hid_mouse_acc_overflow_check(p_mouse_ctx->acc_y_axis, offset))
- {
- /*Overflow detected*/
- return NRF_ERROR_BUSY;
- }
- app_usbd_hid_access_lock(&p_mouse_ctx->hid_ctx);
- p_mouse_ctx->acc_x_axis += offset;
- app_usbd_hid_access_unlock(&p_mouse_ctx->hid_ctx);
- if (app_usbd_hid_trans_required(&p_mouse_ctx->hid_ctx))
- {
- /*New transfer need to be triggered*/
- return hid_mouse_transfer_set(p_mouse);
- }
- return NRF_SUCCESS;
- }
- ret_code_t app_usbd_hid_mouse_y_move(app_usbd_hid_mouse_t const * p_mouse, int8_t offset)
- {
- app_usbd_hid_mouse_ctx_t * p_mouse_ctx = hid_mouse_ctx_get(p_mouse);
- if (!app_usbd_hid_state_valid(&p_mouse_ctx->hid_ctx))
- {
- return NRF_ERROR_INVALID_STATE;
- }
- if (offset == 0)
- {
- /*No position change*/
- return NRF_SUCCESS;
- }
- if (hid_mouse_acc_overflow_check(p_mouse_ctx->acc_y_axis, offset))
- {
- /*Overflow detected*/
- return NRF_ERROR_BUSY;
- }
- app_usbd_hid_access_lock(&p_mouse_ctx->hid_ctx);
- p_mouse_ctx->acc_y_axis += offset;
- app_usbd_hid_access_unlock(&p_mouse_ctx->hid_ctx);
- if (app_usbd_hid_trans_required(&p_mouse_ctx->hid_ctx))
- {
- /*New transfer need to be triggered*/
- return hid_mouse_transfer_set(p_mouse);
- }
- return NRF_SUCCESS;
- }
- ret_code_t app_usbd_hid_mouse_scroll_move(app_usbd_hid_mouse_t const * p_mouse, int8_t offset)
- {
- app_usbd_hid_mouse_ctx_t * p_mouse_ctx = hid_mouse_ctx_get(p_mouse);
- if (!app_usbd_hid_state_valid(&p_mouse_ctx->hid_ctx))
- {
- return NRF_ERROR_INVALID_STATE;
- }
- if (offset == 0)
- {
- /*No position change*/
- return NRF_SUCCESS;
- }
- if (hid_mouse_acc_overflow_check(p_mouse_ctx->acc_scroll, offset))
- {
- /*Overflow detected*/
- return NRF_ERROR_BUSY;
- }
- app_usbd_hid_access_lock(&p_mouse_ctx->hid_ctx);
- p_mouse_ctx->acc_scroll += offset;
- app_usbd_hid_access_unlock(&p_mouse_ctx->hid_ctx);
- if (app_usbd_hid_trans_required(&p_mouse_ctx->hid_ctx))
- {
- /*New transfer need to be triggered*/
- return hid_mouse_transfer_set(p_mouse);
- }
- return NRF_SUCCESS;
- }
- ret_code_t app_usbd_hid_mouse_button_state(app_usbd_hid_mouse_t const * p_mouse,
- uint8_t button_id,
- bool state)
- {
- ASSERT(button_id < 8);
- app_usbd_hid_mouse_ctx_t * p_mouse_ctx = hid_mouse_ctx_get(p_mouse);
- if (button_id >= p_mouse->specific.inst.button_count)
- {
- return NRF_ERROR_INVALID_PARAM;
- }
- if (!app_usbd_hid_state_valid(&p_mouse_ctx->hid_ctx))
- {
- return NRF_ERROR_INVALID_STATE;
- }
- if (IS_SET(p_mouse_ctx->button_state, button_id) == (state ? 1 : 0))
- {
- return NRF_SUCCESS;
- }
- app_usbd_hid_access_lock(&p_mouse_ctx->hid_ctx);
- if (state)
- {
- SET_BIT(p_mouse_ctx->button_state, button_id);
- }
- else
- {
- CLR_BIT(p_mouse_ctx->button_state, button_id);
- }
- app_usbd_hid_access_unlock(&p_mouse_ctx->hid_ctx);
- if (app_usbd_hid_trans_required(&p_mouse_ctx->hid_ctx))
- {
- /*New transfer need to be triggered*/
- return hid_mouse_transfer_set(p_mouse);
- }
- return NRF_SUCCESS;
- }
- /**
- * @brief @ref app_usbd_hid_interface_t::on_get_report
- */
- static ret_code_t hid_mouse_on_get_report(app_usbd_class_inst_t const * p_inst,
- app_usbd_setup_evt_t const * p_setup_ev)
- {
- if (p_setup_ev->setup.wValue.hb != APP_USBD_HID_REPORT_TYPE_INPUT)
- {
- return NRF_ERROR_NOT_SUPPORTED;
- }
- app_usbd_hid_mouse_t const * p_mouse = hid_mouse_get(p_inst);
- app_usbd_hid_report_buffer_t const * p_rep_buffer = hid_mouse_rep_buffer_get(p_mouse);
- return app_usbd_core_setup_rsp(&(p_setup_ev->setup), p_rep_buffer->p_buff, p_rep_buffer->size);
- }
- /**
- * @brief @ref app_usbd_hid_interface_t::on_set_report
- */
- static ret_code_t hid_mouse_on_set_report(app_usbd_class_inst_t const * p_inst,
- app_usbd_setup_evt_t const * p_setup_ev)
- {
- return NRF_ERROR_NOT_SUPPORTED;
- }
- /**
- * @brief @ref app_usbd_hid_interface_t::ep_transfer_set
- */
- static ret_code_t hid_mouse_ep_transfer_in(app_usbd_class_inst_t const * p_inst)
- {
- return hid_mouse_transfer_set((app_usbd_hid_mouse_t const *)p_inst);
- }
- /**
- * @brief @ref app_usbd_class_interface_t::event_handler
- */
- static ret_code_t hid_mouse_event_handler(app_usbd_class_inst_t const * p_inst,
- app_usbd_complex_evt_t const * p_event)
- {
- ASSERT(p_inst != NULL);
- ASSERT(p_event != NULL);
- app_usbd_hid_mouse_t const * p_mouse = hid_mouse_get(p_inst);
- app_usbd_hid_inst_t const * p_hinst = &p_mouse->specific.inst.hid_inst;
- app_usbd_hid_mouse_ctx_t * p_mouse_ctx = hid_mouse_ctx_get(p_mouse);
- app_usbd_hid_ctx_t * p_hid_ctx = &p_mouse_ctx->hid_ctx;
- ret_code_t ret = NRF_SUCCESS;
- switch (p_event->app_evt.type)
- {
- default:
- ret = NRF_ERROR_NOT_SUPPORTED;
- break;
- }
- if (ret != NRF_ERROR_NOT_SUPPORTED)
- {
- /* Event was processed by specific handler */
- return ret;
- }
- /*Try handle event by generic HID event handler*/
- return app_usbd_hid_event_handler(p_inst, p_hinst, p_hid_ctx, p_event);
- }
- ret_code_t hid_mouse_clear_buffer(app_usbd_class_inst_t const * p_inst)
- {
- ASSERT(p_inst != NULL);
- app_usbd_hid_mouse_t const * p_mouse = hid_mouse_get(p_inst);
- app_usbd_hid_mouse_ctx_t * p_mouse_ctx = hid_mouse_ctx_get(p_mouse);
- app_usbd_hid_report_buffer_t const * p_rep_buffer = hid_mouse_rep_buffer_get(p_mouse);
- memset(p_rep_buffer->p_buff, 0, p_rep_buffer->size);
- memset(p_mouse_ctx->report_buff, 0, p_rep_buffer->size);
- memset(&p_mouse_ctx->acc_x_axis, 0, sizeof(p_mouse_ctx->acc_x_axis));
- memset(&p_mouse_ctx->acc_y_axis, 0, sizeof(p_mouse_ctx->acc_y_axis));
- memset(&p_mouse_ctx->acc_scroll, 0, sizeof(p_mouse_ctx->acc_scroll));
- memset(&p_mouse_ctx->button_state, 0, sizeof(p_mouse_ctx->button_state));
-
- CRITICAL_REGION_ENTER();
-
- nrf_drv_usbd_ep_t ep_addr = app_usbd_hid_epin_addr_get(p_inst);
- ASSERT(!NRF_USBD_EPISO_CHECK(ep_addr));
- if (NRF_USBD_EPIN_CHECK(ep_addr))
- {
- nrf_drv_usbd_ep_abort(ep_addr);
- }
- app_usbd_hid_state_flag_clr(&p_mouse_ctx->hid_ctx, APP_USBD_HID_STATE_FLAG_TRANS_IN_PROGRESS);
- CRITICAL_REGION_EXIT();
-
- return NRF_SUCCESS;
- }
- static uint8_t hid_mouse_get_class_descriptors_count(app_usbd_class_inst_t const * p_inst)
- {
- app_usbd_hid_mouse_t const * p_mouse = hid_mouse_get(p_inst);
- app_usbd_hid_inst_t const * p_hinst = &p_mouse->specific.inst.hid_inst;
- return p_hinst->subclass_desc_count;
- }
- static app_usbd_descriptor_t hid_mouse_get_class_descriptors_type(
- app_usbd_class_inst_t const * p_inst,
- uint8_t desc_num)
- {
- app_usbd_hid_mouse_t const * p_mouse = hid_mouse_get(p_inst);
- app_usbd_hid_inst_t const * p_hinst = &p_mouse->specific.inst.hid_inst;
- return p_hinst->p_subclass_desc[desc_num]->type;
- }
- static size_t hid_mouse_get_class_descriptors_length(app_usbd_class_inst_t const * p_inst,
- uint8_t desc_num)
- {
- app_usbd_hid_mouse_t const * p_mouse = hid_mouse_get(p_inst);
- app_usbd_hid_inst_t const * p_hinst = &p_mouse->specific.inst.hid_inst;
- return p_hinst->p_subclass_desc[desc_num]->size;
- }
- static const uint8_t * hid_mouse_get_class_descriptors_data(app_usbd_class_inst_t const * p_inst,
- uint8_t desc_num,
- uint32_t cur_byte)
- {
- app_usbd_hid_mouse_t const * p_mouse = hid_mouse_get(p_inst);
- app_usbd_hid_inst_t const * p_hinst = &p_mouse->specific.inst.hid_inst;
- const uint8_t * p_byte = &p_hinst->p_subclass_desc[desc_num]->p_data[cur_byte];
- return p_byte;
- }
- static bool hid_mouse_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)
- {
- static uint8_t ifaces = 0;
- ifaces = app_usbd_class_iface_count_get(p_inst);
- app_usbd_hid_mouse_t const * p_mouse = hid_mouse_get(p_inst);
- APP_USBD_CLASS_DESCRIPTOR_BEGIN(p_ctx, p_buff, max_size);
- static uint8_t i = 0;
- for (i = 0; i < ifaces; i++)
- {
- /* INTERFACE DESCRIPTOR */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength
- 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
- APP_USBD_CLASS_DESCRIPTOR_WRITE(p_mouse->specific.inst.hid_inst.subclass_boot); // bInterfaceSubclass (Boot Interface)
- APP_USBD_CLASS_DESCRIPTOR_WRITE(p_mouse->specific.inst.hid_inst.protocol); // bInterfaceProtocol
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x00); // iInterface
- /* HID DESCRIPTOR */
- APP_USBD_CLASS_DESCRIPTOR_WRITE(0x09); // bLength
- APP_USBD_CLASS_DESCRIPTOR_WRITE(APP_USBD_HID_DESCRIPTOR_HID); // bDescriptorType = HID
- 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_mouse_get_class_descriptors_count(p_inst)); // bNumDescriptors
- static uint8_t class_desc_cnt = 0;
- class_desc_cnt = hid_mouse_get_class_descriptors_count(p_inst);
- static uint8_t j = 0;
- static uint16_t class_desc_len = 0;
- for (j = 0; j < class_desc_cnt; j++)
- {
- APP_USBD_CLASS_DESCRIPTOR_WRITE(hid_mouse_get_class_descriptors_type(p_inst, j)); // bDescriptorType
- class_desc_len = hid_mouse_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 < 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_mouse->specific.inst.hid_inst.p_ep_interval[j]); // bInterval
- }
- }
- APP_USBD_CLASS_DESCRIPTOR_END();
- }
- ret_code_t hid_mouse_on_set_protocol(app_usbd_hid_mouse_t const * p_mouse, app_usbd_hid_user_event_t ev)
- {
- app_usbd_hid_mouse_ctx_t * p_mouse_ctx = hid_mouse_ctx_get(p_mouse);
- if (ev == APP_USBD_HID_USER_EVT_SET_BOOT_PROTO)
- {
- p_mouse_ctx->hid_ctx.selected_protocol = APP_USBD_HID_PROTO_BOOT;
- }
- else if (ev == APP_USBD_HID_USER_EVT_SET_REPORT_PROTO)
- {
- p_mouse_ctx->hid_ctx.selected_protocol = APP_USBD_HID_PROTO_REPORT;
- }
- else
- {
- return NRF_ERROR_NOT_SUPPORTED;
- }
- return NRF_SUCCESS;
- }
- static ret_code_t hid_mouse_on_idle(app_usbd_class_inst_t const * p_inst, uint8_t report_id)
- {
- UNUSED_PARAMETER(report_id);
- app_usbd_hid_mouse_t const * p_mouse = (app_usbd_hid_mouse_t const *)p_inst;
- nrf_drv_usbd_ep_t ep_addr = app_usbd_hid_epin_addr_get(p_inst);
- app_usbd_hid_mouse_ctx_t * p_mouse_ctx = hid_mouse_ctx_get(p_mouse);
- app_usbd_hid_state_flag_clr(&p_mouse_ctx->hid_ctx, APP_USBD_HID_STATE_FLAG_TRANS_IN_PROGRESS);
- app_usbd_hid_report_buffer_t const * p_rep_buffer = hid_mouse_rep_buffer_get(p_mouse);
- uint8_t * p_buff = p_rep_buffer->p_buff;
- /* Button state */
- p_buff[0] = p_mouse_ctx->button_state;
- /* Axis movement is skipped in idle report */
- p_buff[1] = 0;
- p_buff[2] = 0;
- p_buff[3] = 0;
- NRF_DRV_USBD_TRANSFER_IN(transfer, p_rep_buffer->p_buff, p_rep_buffer->size);
- ret_code_t ret;
- CRITICAL_REGION_ENTER();
- ret = app_usbd_ep_transfer(ep_addr, &transfer);
- if (ret == NRF_SUCCESS)
- {
- app_usbd_hid_state_flag_set(&p_mouse_ctx->hid_ctx,
- APP_USBD_HID_STATE_FLAG_TRANS_IN_PROGRESS);
- }
- CRITICAL_REGION_EXIT();
-
- return NRF_SUCCESS;
- }
- /** @} */
- const app_usbd_hid_methods_t app_usbd_hid_mouse_methods = {
- .on_get_report = hid_mouse_on_get_report,
- .on_set_report = hid_mouse_on_set_report,
- .ep_transfer_in = hid_mouse_ep_transfer_in,
- .ep_transfer_out = NULL,
- .subclass_count = hid_mouse_get_class_descriptors_count,
- .subclass_length = hid_mouse_get_class_descriptors_length,
- .subclass_data = hid_mouse_get_class_descriptors_data,
- .on_idle = hid_mouse_on_idle,
- };
- const app_usbd_class_methods_t app_usbd_hid_mouse_class_methods = {
- .event_handler = hid_mouse_event_handler,
- .feed_descriptors = hid_mouse_feed_descriptors,
- };
- #endif //NRF_MODULE_ENABLED(APP_USBD_HID_MOUSE)
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