64 lines
2.5 KiB
C
64 lines
2.5 KiB
C
/*
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* This file is part of the MicroPython 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) 2021 Dan Halbert 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 "shared-module/usb_cdc/Serial.h"
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#include "tusb.h"
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size_t common_hal_usb_cdc_serial_read(usb_cdc_serial_obj_t *self, uint8_t *data, size_t len, int *errcode) {
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return tud_cdc_n_read(self->idx, data, len);
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}
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size_t common_hal_usb_cdc_serial_write(usb_cdc_serial_obj_t *self, const uint8_t *data, size_t len, int *errcode) {
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uint32_t num_written = tud_cdc_n_write(self->idx, data, len);
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tud_cdc_n_write_flush(self->idx);
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return num_written;
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}
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uint32_t common_hal_usb_cdc_serial_get_in_waiting(usb_cdc_serial_obj_t *self) {
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return tud_cdc_n_available(self->idx);
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}
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uint32_t common_hal_usb_cdc_serial_get_out_waiting(usb_cdc_serial_obj_t *self) {
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// Return number of FIFO bytes currently occupied.
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return CFG_TUD_CDC_TX_BUFSIZE - tud_cdc_n_write_available(self->idx);
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}
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void common_hal_usb_cdc_serial_reset_input_buffer(usb_cdc_serial_obj_t *self) {
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tud_cdc_n_read_flush(self->idx);
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}
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uint32_t common_hal_usb_cdc_serial_reset_output_buffer(usb_cdc_serial_obj_t *self) {
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return tud_cdc_n_write_clear(self->idx);
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}
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uint32_t common_hal_usb_cdc_serial_flush(usb_cdc_serial_obj_t *self) {
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return tud_cdc_n_write_flush(self->idx);
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}
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bool common_hal_usb_cdc_serial_get_connected(usb_cdc_serial_obj_t *self) {
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return tud_cdc_n_connected(self->idx);
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}
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