From 9f6f8b2fdd0a90394b9fcc9b0d9198d32aee2cf5 Mon Sep 17 00:00:00 2001 From: iabdalkader Date: Fri, 17 Jun 2022 15:34:50 +0200 Subject: [PATCH] shared/runtime/tinyusb_helpers: Add TinyUSB helper functions. Currently this file only includes a CDC jump-to-bootloader helper function. --- shared/runtime/tinyusb_helpers.c | 54 ++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) create mode 100644 shared/runtime/tinyusb_helpers.c diff --git a/shared/runtime/tinyusb_helpers.c b/shared/runtime/tinyusb_helpers.c new file mode 100644 index 000000000..00b72e74b --- /dev/null +++ b/shared/runtime/tinyusb_helpers.c @@ -0,0 +1,54 @@ +/* + * This file is part of the MicroPython project, http://micropython.org/ + * + * The MIT License (MIT) + * + * Copyright (c) 2022 Ibrahim Abdelkader + * + * 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