espressif_tinyusb/examples/device/cdc_msc_hid_freertos/src/main.c

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/*
* The MIT License (MIT)
*
* Copyright (c) 2018, hathach (tinyusb.org)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* This file is part of the TinyUSB stack.
*/
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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
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#include "FreeRTOS.h"
#include "task.h"
#include "timers.h"
#include "queue.h"
#include "semphr.h"
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#include "bsp/board.h"
#include "tusb.h"
//--------------------------------------------------------------------+
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// MACRO CONSTANT TYPEDEF PROTYPES
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//--------------------------------------------------------------------+
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/* Blink pattern
* - 250 ms : device not mounted
* - 1000 ms : device mounted
* - 2500 ms : device is suspended
*/
enum {
BLINK_NOT_MOUNTED = 250,
BLINK_MOUNTED = 1000,
BLINK_SUSPENDED = 2500,
};
TimerHandle_t blink_tm;
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void led_blinky_cb(TimerHandle_t xTimer);
void usb_device_task(void* param);
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/*------------- MAIN -------------*/
int main(void)
{
board_init();
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// soft timer for blinky
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blink_tm = xTimerCreate(NULL, pdMS_TO_TICKS(BLINK_NOT_MOUNTED), true, NULL, led_blinky_cb);
xTimerStart(blink_tm, 0);
tusb_init();
// Create a task for tinyusb device stack
xTaskCreate( usb_device_task, "usbd", 150, NULL, configMAX_PRIORITIES-1, NULL);
// Create task
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#if CFG_TUD_CDC
extern void cdc_task(void* params);
xTaskCreate( cdc_task, "cdc", 256, NULL, configMAX_PRIORITIES-2, NULL);
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#endif
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#if CFG_TUD_HID
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extern void hid_task(void* params);
xTaskCreate( hid_task, "hid", 256, NULL, configMAX_PRIORITIES-2, NULL);
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#endif
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vTaskStartScheduler();
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NVIC_SystemReset();
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return 0;
}
// USB Device Driver task
// This top level thread process all usb events and invoke callbacks
void usb_device_task(void* param)
{
(void) param;
// RTOS forever loop
while (1)
{
// tinyusb device task
tud_task();
}
}
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//--------------------------------------------------------------------+
// USB CDC
//--------------------------------------------------------------------+
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#if CFG_TUD_CDC
void cdc_task(void* params)
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{
(void) params;
// RTOS forever loop
while ( 1 )
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{
if ( tud_cdc_connected() )
{
// connected and there are data available
if ( tud_cdc_available() )
{
uint8_t buf[64];
// read and echo back
uint32_t count = tud_cdc_read(buf, sizeof(buf));
for(uint32_t i=0; i<count; i++)
{
tud_cdc_write_char(buf[i]);
if ( buf[i] == '\r' ) tud_cdc_write_char('\n');
}
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tud_cdc_write_flush();
}
}
taskYIELD();
}
}
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// Invoked when cdc when line state changed e.g connected/disconnected
void tud_cdc_line_state_cb(uint8_t itf, bool dtr, bool rts)
{
(void) itf;
// connected
if ( dtr && rts )
{
// print initial message when connected
tud_cdc_write_str("\r\nTinyUSB CDC MSC HID device with FreeRTOS example\r\n");
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}
}
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// Invoked when CDC interface received data from host
void tud_cdc_rx_cb(uint8_t itf)
{
(void) itf;
}
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#endif
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//--------------------------------------------------------------------+
// USB HID
//--------------------------------------------------------------------+
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#if CFG_TUD_HID
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// Must match with ID declared by HID Report Descriptor, better to be in header file
enum
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{
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REPORT_ID_KEYBOARD = 1,
REPORT_ID_MOUSE
};
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void hid_task(void* params)
{
(void) params;
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while (1)
{
// Poll every 10ms
vTaskDelay(pdMS_TO_TICKS(10));
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uint32_t const btn = board_button_read();
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// Remote wakeup
if ( tud_suspended() && btn )
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{
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// Wake up host if we are in suspend mode
// and REMOTE_WAKEUP feature is enabled by host
tud_remote_wakeup();
}
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/*------------- Mouse -------------*/
if ( tud_hid_ready() )
{
if ( btn )
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{
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int8_t const delta = 5;
tud_hid_mouse_move(REPORT_ID_MOUSE, delta, delta); // right + down
// delay a bit before attempt to send keyboard report
vTaskDelay(pdMS_TO_TICKS(2));
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}
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}
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/*------------- Keyboard -------------*/
if ( tud_hid_ready() )
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{
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// use to avoid send multiple consecutive zero report for keyboard
static bool has_key = false;
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if ( btn )
{
uint8_t keycode[6] = { 0 };
keycode[0] = HID_KEY_A;
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tud_hid_keyboard_report(REPORT_ID_KEYBOARD, 0, keycode);
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has_key = true;
}else
{
// send empty key report if previously has key pressed
if (has_key) tud_hid_keyboard_key_release(REPORT_ID_KEYBOARD);
has_key = false;
}
}
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}
}
uint16_t tud_hid_get_report_cb(uint8_t report_id, hid_report_type_t report_type, uint8_t* buffer, uint16_t reqlen)
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{
// TODO not Implemented
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(void) report_id;
(void) report_type;
(void) buffer;
(void) reqlen;
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return 0;
}
void tud_hid_set_report_cb(uint8_t report_id, hid_report_type_t report_type, uint8_t const* buffer, uint16_t bufsize)
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{
// TODO not Implemented
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(void) report_id;
(void) report_type;
(void) buffer;
(void) bufsize;
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}
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#endif
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//--------------------------------------------------------------------+
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// Device callbacks
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//--------------------------------------------------------------------+
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// Invoked when device is mounted
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void tud_mount_cb(void)
{
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xTimerChangePeriod(blink_tm, pdMS_TO_TICKS(BLINK_MOUNTED), 0);
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}
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// Invoked when device is unmounted
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void tud_umount_cb(void)
{
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xTimerChangePeriod(blink_tm, pdMS_TO_TICKS(BLINK_NOT_MOUNTED), 0);
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}
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// Invoked when usb bus is suspended
// remote_wakeup_en : if host allow us to perform remote wakeup
// Within 7ms, device must draw an average of current less than 2.5 mA from bus
void tud_suspend_cb(bool remote_wakeup_en)
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{
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(void) remote_wakeup_en;
xTimerChangePeriod(blink_tm, pdMS_TO_TICKS(BLINK_SUSPENDED), 0);
}
// Invoked when usb bus is resumed
void tud_resume_cb(void)
{
xTimerChangePeriod(blink_tm, pdMS_TO_TICKS(BLINK_MOUNTED), 0);
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}
//--------------------------------------------------------------------+
// BLINKING TASK
//--------------------------------------------------------------------+
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void led_blinky_cb(TimerHandle_t xTimer)
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{
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(void) xTimer;
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static bool led_state = false;
board_led_write(led_state);
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led_state = 1 - led_state; // toggle
}