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shared/runtime/tinyusb_helpers: Add TinyUSB helper functions.

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Currently this file only includes a CDC jump-to-bootloader helper function.
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iabdalkader 2022-06-17 15:34:50 +02:00 committed by Damien George
parent 6c1495b5fe
commit 9f6f8b2fdd
1 changed files with 54 additions and 0 deletions
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shared/runtime/tinyusb_helpers.c Normal file
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2022 Ibrahim Abdelkader <iabdalkader@openmv.io>
*
* 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.
*/
#include "py/runtime.h"
#include "py/mphal.h"
#include "modmachine.h"
#if MICROPY_HW_USB_CDC_1200BPS_TOUCH
#include "tusb.h"
static mp_sched_node_t mp_bootloader_sched_node;
STATIC void usbd_cdc_run_bootloader_task(mp_sched_node_t *node) {
mp_hal_delay_ms(250);
machine_bootloader(0, NULL);
}
void tud_cdc_line_state_cb(uint8_t itf, bool dtr, bool rts) {
if (dtr == false && rts == false) {
// Device is disconnected.
cdc_line_coding_t line_coding;
tud_cdc_n_get_line_coding(itf, &line_coding);
if (line_coding.bit_rate == 1200) {
// Delay bootloader jump to allow the USB stack to service endpoints.
mp_sched_schedule_node(&mp_bootloader_sched_node, usbd_cdc_run_bootloader_task);
}
}
}
#endif