137 lines
3.7 KiB
C
137 lines
3.7 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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*/
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/* After device is enumerated, run following command
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*
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* $ dfu-util -l
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*
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* It should be able to list our device as in Runtime mode. Then run
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*
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* $ dfu-util -e
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*
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* This will send DETACH command to put device into bootloader. Since this example
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* is minimal, it doesn't actually go into DFU mode but rather change the LED blinking
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* pattern to fast rate as indicator.
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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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//--------------------------------------------------------------------+
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// MACRO CONSTANT TYPEDEF PROTYPES
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//--------------------------------------------------------------------+
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/* Blink pattern
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* - 1000 ms : device should reboot
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* - 250 ms : device not mounted
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* - 0 ms : device mounted
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* - 2500 ms : device is suspended
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*/
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enum {
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BLINK_DFU_MODE = 100,
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BLINK_NOT_MOUNTED = 250,
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BLINK_MOUNTED = 1000,
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BLINK_SUSPENDED = 2500,
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};
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static uint32_t blink_interval_ms = BLINK_NOT_MOUNTED;
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void led_blinking_task(void);
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/*------------- MAIN -------------*/
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int main(void)
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{
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board_init();
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// init device stack on configured roothub port
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tud_init(BOARD_TUD_RHPORT);
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while (1)
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{
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tud_task(); // tinyusb device task
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led_blinking_task();
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}
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return 0;
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}
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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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{
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blink_interval_ms = BLINK_MOUNTED;
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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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{
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blink_interval_ms = BLINK_NOT_MOUNTED;
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}
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// Invoked when usb bus is suspended
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// remote_wakeup_en : if host allow us to perform remote wakeup
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// Within 7ms, device must draw an average of current less than 2.5 mA from bus
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void tud_suspend_cb(bool remote_wakeup_en)
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{
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(void) remote_wakeup_en;
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blink_interval_ms = BLINK_SUSPENDED;
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}
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// Invoked when usb bus is resumed
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void tud_resume_cb(void)
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{
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blink_interval_ms = BLINK_MOUNTED;
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}
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// Invoked on DFU_DETACH request to reboot to the bootloader
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void tud_dfu_runtime_reboot_to_dfu_cb(void)
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{
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blink_interval_ms = BLINK_DFU_MODE;
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}
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//--------------------------------------------------------------------+
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// BLINKING TASK + Indicator pulse
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//--------------------------------------------------------------------+
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void led_blinking_task(void)
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{
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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 < blink_interval_ms) return; // not enough time
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start_ms += blink_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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