Initial Release
This commit is contained in:
graham sanderson
228
usb/host/host_hid/host_hid.c
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228
usb/host/host_hid/host_hid.c
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/*
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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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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "bsp/board.h"
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#include "tusb.h"
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void print_greeting(void);
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void led_blinking_task(void);
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extern void hid_task(void);
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int main(void) {
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board_init();
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print_greeting();
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tusb_init();
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while (1) {
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// tinyusb host task
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tuh_task();
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led_blinking_task();
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#if CFG_TUH_HID_KEYBOARD || CFG_TUH_HID_MOUSE
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hid_task();
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#endif
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}
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return 0;
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}
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//--------------------------------------------------------------------+
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// USB HID
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//--------------------------------------------------------------------+
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#if CFG_TUH_HID_KEYBOARD
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CFG_TUSB_MEM_SECTION static hid_keyboard_report_t usb_keyboard_report;
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uint8_t const keycode2ascii[128][2] = {HID_KEYCODE_TO_ASCII};
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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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for (uint8_t i = 0; i < 6; i++) {
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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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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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if (p_new_report->keycode[i]) {
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if (find_key_in_report(&prev_report, p_new_report->keycode[i])) {
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// exist in previous report means the current key is holding
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} else {
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// not existed in previous report means the current key is pressed
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bool const is_shift =
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p_new_report->modifier & (KEYBOARD_MODIFIER_LEFTSHIFT | KEYBOARD_MODIFIER_RIGHTSHIFT);
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uint8_t ch = keycode2ascii[p_new_report->keycode[i]][is_shift ? 1 : 0];
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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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fflush(stdout); // flush right away, else nanolib will wait for newline
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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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void tuh_hid_keyboard_mounted_cb(uint8_t dev_addr) {
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// application set-up
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printf("A Keyboard device (address %d) is mounted\r\n", dev_addr);
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tuh_hid_keyboard_get_report(dev_addr, &usb_keyboard_report);
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}
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void tuh_hid_keyboard_unmounted_cb(uint8_t dev_addr) {
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// application tear-down
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printf("A Keyboard device (address %d) is unmounted\r\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, xfer_result_t event) {
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(void) dev_addr;
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(void) event;
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}
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#endif
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#if CFG_TUH_HID_MOUSE
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CFG_TUSB_MEM_SECTION static hid_mouse_report_t usb_mouse_report;
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void cursor_movement(int8_t x, int8_t y, int8_t wheel) {
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//------------- X -------------//
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if (x < 0) {
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printf(ANSI_CURSOR_BACKWARD(%d), (-x)); // move left
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} else if (x > 0) {
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printf(ANSI_CURSOR_FORWARD(%d), x); // move right
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} else {}
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//------------- Y -------------//
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if (y < 0) {
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printf(ANSI_CURSOR_UP(%d), (-y)); // move up
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} else if (y > 0) {
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printf(ANSI_CURSOR_DOWN(%d), y); // move down
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} else {}
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//------------- wheel -------------//
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if (wheel < 0) {
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printf(ANSI_SCROLL_UP(%d), (-wheel)); // scroll up
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} else if (wheel > 0) {
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printf(ANSI_SCROLL_DOWN(%d), wheel); // scroll down
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} else {}
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}
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static inline void process_mouse_report(hid_mouse_report_t const *p_report) {
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static hid_mouse_report_t prev_report = {0};
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//------------- button state -------------//
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uint8_t button_changed_mask = p_report->buttons ^prev_report.buttons;
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if (button_changed_mask & p_report->buttons) {
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printf(" %c%c%c ",
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p_report->buttons & MOUSE_BUTTON_LEFT ? 'L' : '-',
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p_report->buttons & MOUSE_BUTTON_MIDDLE ? 'M' : '-',
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p_report->buttons & MOUSE_BUTTON_RIGHT ? 'R' : '-');
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}
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//------------- cursor movement -------------//
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cursor_movement(p_report->x, p_report->y, p_report->wheel);
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}
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void tuh_hid_mouse_mounted_cb(uint8_t dev_addr) {
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// application set-up
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printf("A Mouse device (address %d) is mounted\r\n", dev_addr);
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}
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void tuh_hid_mouse_unmounted_cb(uint8_t dev_addr) {
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// application tear-down
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printf("A Mouse device (address %d) is unmounted\r\n", dev_addr);
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}
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// invoked ISR context
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void tuh_hid_mouse_isr(uint8_t dev_addr, xfer_result_t event) {
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(void) dev_addr;
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(void) event;
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}
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#endif
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void hid_task(void) {
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uint8_t const addr = 1;
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#if CFG_TUH_HID_KEYBOARD
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if (tuh_hid_keyboard_is_mounted(addr)) {
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if (!tuh_hid_keyboard_is_busy(addr)) {
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process_kbd_report(&usb_keyboard_report);
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tuh_hid_keyboard_get_report(addr, &usb_keyboard_report);
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}
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}
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#endif
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#if CFG_TUH_HID_MOUSE
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if (tuh_hid_mouse_is_mounted(addr)) {
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if (!tuh_hid_mouse_is_busy(addr)) {
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process_mouse_report(&usb_mouse_report);
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tuh_hid_mouse_get_report(addr, &usb_mouse_report);
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}
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}
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#endif
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}
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//--------------------------------------------------------------------+
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// BLINKING TASK
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//--------------------------------------------------------------------+
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void led_blinking_task(void) {
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const uint32_t interval_ms = 250;
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static uint32_t start_ms = 0;
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static bool led_state = false;
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// Blink every interval ms
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if (board_millis() - start_ms < interval_ms) return; // not enough time
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start_ms += interval_ms;
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board_led_write(led_state);
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led_state = 1 - led_state; // toggle
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}
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//--------------------------------------------------------------------+
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// HELPER FUNCTION
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//--------------------------------------------------------------------+
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void print_greeting(void) {
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printf("This Host demo is configured to support:\n");
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if (CFG_TUH_HID_KEYBOARD) puts(" - HID Keyboard");
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if (CFG_TUH_HID_MOUSE) puts(" - HID Mouse");
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}
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