move old host example to obsolete
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hathach
176
examples/obsolete/host/src/keyboard_host_app.c
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176
examples/obsolete/host/src/keyboard_host_app.c
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/**************************************************************************/
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/*!
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@file keyboard_host_app.c
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@author hathach (tinyusb.org)
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@section LICENSE
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Software License Agreement (BSD License)
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Copyright (c) 2013, hathach (tinyusb.org)
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holders nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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This file is part of the tinyusb stack.
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*/
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/**************************************************************************/
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//--------------------------------------------------------------------+
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// INCLUDE
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//--------------------------------------------------------------------+
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#include "keyboard_host_app.h"
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#include "app_os_prio.h"
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#if TUSB_CFG_HOST_HID_KEYBOARD
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//--------------------------------------------------------------------+
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// MACRO CONSTANT TYPEDEF
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//--------------------------------------------------------------------+
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#define QUEUE_KEYBOARD_REPORT_DEPTH 4
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//--------------------------------------------------------------------+
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// INTERNAL OBJECT & FUNCTION DECLARATION
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//--------------------------------------------------------------------+
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static osal_queue_t queue_kbd_hdl;
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TUSB_CFG_ATTR_USBRAM static hid_keyboard_report_t usb_keyboard_report;
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static inline uint8_t keycode_to_ascii(uint8_t modifier, uint8_t keycode) ATTR_CONST ATTR_ALWAYS_INLINE;
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static inline void process_kbd_report(hid_keyboard_report_t const * report);
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//--------------------------------------------------------------------+
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// tinyusb callbacks
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//--------------------------------------------------------------------+
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void tuh_hid_keyboard_mounted_cb(uint8_t dev_addr)
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{
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// application set-up
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printf("\na Keyboard device (address %d) is mounted\n", dev_addr);
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osal_queue_flush(queue_kbd_hdl);
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tuh_hid_keyboard_get_report(dev_addr, (uint8_t*) &usb_keyboard_report); // first report
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}
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void tuh_hid_keyboard_unmounted_cb(uint8_t dev_addr)
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{
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// application tear-down
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printf("\na Keyboard device (address %d) is unmounted\n", dev_addr);
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}
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// invoked ISR context
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void tuh_hid_keyboard_isr(uint8_t dev_addr, tusb_event_t event)
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{
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switch(event)
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{
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case TUSB_EVENT_XFER_COMPLETE:
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osal_queue_send(queue_kbd_hdl, &usb_keyboard_report);
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tuh_hid_keyboard_get_report(dev_addr, (uint8_t*) &usb_keyboard_report);
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break;
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case TUSB_EVENT_XFER_ERROR:
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tuh_hid_keyboard_get_report(dev_addr, (uint8_t*) &usb_keyboard_report); // ignore & continue
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break;
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default :
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break;
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}
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}
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//--------------------------------------------------------------------+
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// APPLICATION
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//--------------------------------------------------------------------+
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void keyboard_host_app_init(void)
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{
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memclr_(&usb_keyboard_report, sizeof(hid_keyboard_report_t));
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queue_kbd_hdl = osal_queue_create( QUEUE_KEYBOARD_REPORT_DEPTH, sizeof(hid_keyboard_report_t) );
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ASSERT_PTR( queue_kbd_hdl, VOID_RETURN );
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VERIFY( osal_task_create(keyboard_host_app_task, "kbd", 128, NULL, KEYBOARD_APP_TASK_PRIO), );
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}
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//------------- main task -------------//
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void keyboard_host_app_task(void* param)
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{
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(void) param;
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OSAL_TASK_BEGIN
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hid_keyboard_report_t kbd_report;
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tusb_error_t error;
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osal_queue_receive(queue_kbd_hdl, &kbd_report, OSAL_TIMEOUT_WAIT_FOREVER, &error);
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(void) error; // suppress compiler warning
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process_kbd_report(&kbd_report);
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OSAL_TASK_END
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}
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//--------------------------------------------------------------------+
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// HELPER
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//--------------------------------------------------------------------+
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// look up new key in previous keys
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static inline bool find_key_in_report(hid_keyboard_report_t const *p_report, uint8_t keycode)
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{
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for(uint8_t i=0; i<6; i++)
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{
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if (p_report->keycode[i] == keycode) return true;
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}
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return false;
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}
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static inline void process_kbd_report(hid_keyboard_report_t const *p_new_report)
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{
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static hid_keyboard_report_t prev_report = { 0, 0, {0} }; // previous report to check key released
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//------------- example code ignore control (non-printable) key affects -------------//
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for(uint8_t i=0; i<6; i++)
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{
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if ( p_new_report->keycode[i] )
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{
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if ( find_key_in_report(&prev_report, p_new_report->keycode[i]) )
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{
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// exist in previous report means the current key is holding
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}else
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{
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// not existed in previous report means the current key is pressed
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uint8_t ch = keycode_to_ascii(p_new_report->modifier, p_new_report->keycode[i]);
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putchar(ch);
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if ( ch == '\r' ) putchar('\n'); // added new line for enter key
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}
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}
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// TODO example skips key released
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}
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prev_report = *p_new_report;
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}
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static inline uint8_t keycode_to_ascii(uint8_t modifier, uint8_t keycode)
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{
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// TODO max of keycode_ascii_tbl
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return keycode > 128 ? 0 :
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hid_keycode_to_ascii_tbl [modifier & (KEYBOARD_MODIFIER_LEFTSHIFT | KEYBOARD_MODIFIER_RIGHTSHIFT) ? 1 : 0] [keycode];
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}
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#endif
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