146 lines
4.0 KiB
C++
146 lines
4.0 KiB
C++
// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include "sdkconfig.h"
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#if CONFIG_TINYUSB_CDC_ENABLED
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#include <inttypes.h>
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#include "esp_event.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/queue.h"
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#include "freertos/semphr.h"
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#include "Stream.h"
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ESP_EVENT_DECLARE_BASE(ARDUINO_USB_CDC_EVENTS);
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typedef enum {
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ARDUINO_USB_CDC_ANY_EVENT = ESP_EVENT_ANY_ID,
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ARDUINO_USB_CDC_CONNECTED_EVENT = 0,
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ARDUINO_USB_CDC_DISCONNECTED_EVENT,
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ARDUINO_USB_CDC_LINE_STATE_EVENT,
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ARDUINO_USB_CDC_LINE_CODING_EVENT,
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ARDUINO_USB_CDC_RX_EVENT,
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ARDUINO_USB_CDC_TX_EVENT,
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ARDUINO_USB_CDC_RX_OVERFLOW_EVENT,
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ARDUINO_USB_CDC_MAX_EVENT,
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} arduino_usb_cdc_event_t;
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typedef union {
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struct {
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bool dtr;
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bool rts;
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} line_state;
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struct {
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uint32_t bit_rate;
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uint8_t stop_bits; ///< 0: 1 stop bit - 1: 1.5 stop bits - 2: 2 stop bits
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uint8_t parity; ///< 0: None - 1: Odd - 2: Even - 3: Mark - 4: Space
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uint8_t data_bits; ///< can be 5, 6, 7, 8 or 16
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} line_coding;
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struct {
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size_t len;
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} rx;
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struct {
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size_t dropped_bytes;
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} rx_overflow;
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} arduino_usb_cdc_event_data_t;
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class USBCDC: public Stream
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{
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public:
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USBCDC(uint8_t itf=0);
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~USBCDC();
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void onEvent(esp_event_handler_t callback);
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void onEvent(arduino_usb_cdc_event_t event, esp_event_handler_t callback);
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size_t setRxBufferSize(size_t size);
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void setTxTimeoutMs(uint32_t timeout);
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void begin(unsigned long baud=0);
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void end();
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int available(void);
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int availableForWrite(void);
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int peek(void);
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int read(void);
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size_t read(uint8_t *buffer, size_t size);
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size_t write(uint8_t);
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size_t write(const uint8_t *buffer, size_t size);
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void flush(void);
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inline size_t read(char * buffer, size_t size)
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{
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return read((uint8_t*) buffer, size);
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}
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inline size_t write(const char * buffer, size_t size)
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{
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return write((uint8_t*) buffer, size);
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}
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inline size_t write(const char * s)
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{
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return write((uint8_t*) s, strlen(s));
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}
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inline size_t write(unsigned long n)
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{
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return write((uint8_t) n);
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}
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inline size_t write(long n)
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{
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return write((uint8_t) n);
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}
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inline size_t write(unsigned int n)
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{
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return write((uint8_t) n);
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}
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inline size_t write(int n)
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{
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return write((uint8_t) n);
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}
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uint32_t baudRate();
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void setDebugOutput(bool);
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operator bool() const;
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void enableReboot(bool enable);
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bool rebootEnabled(void);
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//internal methods
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void _onDFU(void);
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void _onLineState(bool _dtr, bool _rts);
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void _onLineCoding(uint32_t _bit_rate, uint8_t _stop_bits, uint8_t _parity, uint8_t _data_bits);
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void _onRX(void);
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void _onTX(void);
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void _onUnplugged(void);
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protected:
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uint8_t itf;
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uint32_t bit_rate;
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uint8_t stop_bits; ///< 0: 1 stop bit - 1: 1.5 stop bits - 2: 2 stop bits
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uint8_t parity; ///< 0: None - 1: Odd - 2: Even - 3: Mark - 4: Space
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uint8_t data_bits; ///< can be 5, 6, 7, 8 or 16
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bool dtr;
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bool rts;
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bool connected;
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bool reboot_enable;
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xQueueHandle rx_queue;
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xSemaphoreHandle tx_lock;
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uint32_t tx_timeout_ms;
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};
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#if ARDUINO_USB_CDC_ON_BOOT && !ARDUINO_USB_MODE //Serial used for USB CDC
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extern USBCDC Serial;
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#endif
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#endif /* CONFIG_TINYUSB_CDC_ENABLED */
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