138 lines
4.6 KiB
C
138 lines
4.6 KiB
C
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018 hathach for Adafruit Industries
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* Copyright (c) 2019 Lucian Copeland for Adafruit Industries
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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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#include "py/runtime.h"
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#include "supervisor/usb.h"
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#include "supervisor/esp_port.h"
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#include "supervisor/port.h"
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#include "shared/runtime/interrupt_char.h"
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#include "shared/readline/readline.h"
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#include "hal/gpio_ll.h"
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#include "hal/usb_hal.h"
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#include "soc/usb_periph.h"
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#include "components/driver/include/driver/gpio.h"
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#include "components/driver/include/driver/periph_ctrl.h"
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#ifdef CONFIG_IDF_TARGET_ESP32C3
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#include "components/esp_rom/include/esp32c3/rom/gpio.h"
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#elif defined(CONFIG_IDF_TARGET_ESP32S2)
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#include "components/esp_rom/include/esp32s2/rom/gpio.h"
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#elif defined(CONFIG_IDF_TARGET_ESP32S3)
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#include "components/esp_rom/include/esp32s3/rom/gpio.h"
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#endif
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "tusb.h"
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#ifdef CFG_TUSB_DEBUG
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#define USBD_STACK_SIZE (3 * configMINIMAL_STACK_SIZE)
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#else
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#define USBD_STACK_SIZE (3 * configMINIMAL_STACK_SIZE / 2)
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#endif
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StackType_t usb_device_stack[USBD_STACK_SIZE];
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StaticTask_t usb_device_taskdef;
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// USB Device Driver task
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// This top level thread process all usb events and invoke callbacks
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STATIC void usb_device_task(void *param) {
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(void)param;
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// RTOS forever loop
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while (1) {
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// tinyusb device task
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if (tusb_inited()) {
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tud_task();
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tud_cdc_write_flush();
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}
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vTaskDelay(1);
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}
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}
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static void configure_pins(usb_hal_context_t *usb) {
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/* usb_periph_iopins currently configures USB_OTG as USB Device.
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* Introduce additional parameters in usb_hal_context_t when adding support
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* for USB Host.
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*/
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for (const usb_iopin_dsc_t *iopin = usb_periph_iopins; iopin->pin != -1; ++iopin) {
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if ((usb->use_external_phy) || (iopin->ext_phy_only == 0)) {
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gpio_pad_select_gpio(iopin->pin);
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if (iopin->is_output) {
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gpio_matrix_out(iopin->pin, iopin->func, false, false);
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} else {
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gpio_matrix_in(iopin->pin, iopin->func, false);
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gpio_pad_input_enable(iopin->pin);
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}
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gpio_pad_unhold(iopin->pin);
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}
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}
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if (!usb->use_external_phy) {
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gpio_set_drive_capability(USBPHY_DP_NUM, GPIO_DRIVE_CAP_3);
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gpio_set_drive_capability(USBPHY_DP_NUM, GPIO_DRIVE_CAP_3);
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}
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}
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void init_usb_hardware(void) {
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periph_module_reset(PERIPH_USB_MODULE);
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periph_module_enable(PERIPH_USB_MODULE);
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usb_hal_context_t hal = {
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.use_external_phy = false // use built-in PHY
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};
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usb_hal_init(&hal);
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configure_pins(&hal);
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(void)xTaskCreateStatic(usb_device_task,
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"usbd",
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USBD_STACK_SIZE,
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NULL,
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5,
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usb_device_stack,
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&usb_device_taskdef);
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}
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/**
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* Callback invoked when received an "wanted" char.
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* @param itf Interface index (for multiple cdc interfaces)
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* @param wanted_char The wanted char (set previously)
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*/
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void tud_cdc_rx_wanted_cb(uint8_t itf, char wanted_char) {
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(void)itf; // not used
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// CircuitPython's VM is run in a separate FreeRTOS task from TinyUSB.
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// So, we must notify the other task when a CTRL-C is received.
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port_wake_main_task();
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// Workaround for using shared/runtime/interrupt_char.c
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// Compare mp_interrupt_char with wanted_char and ignore if not matched
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if (mp_interrupt_char == wanted_char) {
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tud_cdc_read_flush(); // flush read fifo
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mp_sched_keyboard_interrupt();
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}
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}
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