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/*
* The MIT License (MIT)
*
* Copyright (c) 2019 Ha Thach (tinyusb.org)
*
* 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.
*
* This file is part of the TinyUSB stack.
*/
#ifndef TUSB_CDC_DEVICE_H_
#define TUSB_CDC_DEVICE_H_
#include "cdc.h"
//--------------------------------------------------------------------+
// Class Driver Configuration
//--------------------------------------------------------------------+
#if !defined(CFG_TUD_CDC_EP_BUFSIZE) && defined(CFG_TUD_CDC_EPSIZE)
#warning CFG_TUD_CDC_EPSIZE is renamed to CFG_TUD_CDC_EP_BUFSIZE, please update to use the new name
#define CFG_TUD_CDC_EP_BUFSIZE CFG_TUD_CDC_EPSIZE
#endif
#ifndef CFG_TUD_CDC_EP_BUFSIZE
#define CFG_TUD_CDC_EP_BUFSIZE (TUD_OPT_HIGH_SPEED ? 512 : 64)
#endif
#ifdef __cplusplus
extern "C" {
#endif
//--------------------------------------------------------------------+
// Driver Configuration
//--------------------------------------------------------------------+
typedef struct TU_ATTR_PACKED {
uint8_t rx_persistent : 1; // keep rx fifo on bus reset or disconnect
uint8_t tx_persistent : 1; // keep tx fifo on bus reset or disconnect
} tud_cdc_configure_fifo_t;
// Configure CDC FIFOs behavior
bool tud_cdc_configure_fifo(tud_cdc_configure_fifo_t const* cfg);
//--------------------------------------------------------------------+
// Application API (Multiple Ports) i.e. CFG_TUD_CDC > 1
//--------------------------------------------------------------------+
// Check if interface is ready
bool tud_cdc_n_ready(uint8_t itf);
// Check if terminal is connected to this port
bool tud_cdc_n_connected(uint8_t itf);
// Get current line state. Bit 0: DTR (Data Terminal Ready), Bit 1: RTS (Request to Send)
uint8_t tud_cdc_n_get_line_state(uint8_t itf);
// Get current line encoding: bit rate, stop bits parity etc ..
void tud_cdc_n_get_line_coding(uint8_t itf, cdc_line_coding_t* coding);
// Set special character that will trigger tud_cdc_rx_wanted_cb() callback on receiving
void tud_cdc_n_set_wanted_char(uint8_t itf, char wanted);
// Get the number of bytes available for reading
uint32_t tud_cdc_n_available(uint8_t itf);
// Read received bytes
uint32_t tud_cdc_n_read(uint8_t itf, void* buffer, uint32_t bufsize);
// Read a byte, return -1 if there is none
TU_ATTR_ALWAYS_INLINE static inline int32_t tud_cdc_n_read_char(uint8_t itf) {
uint8_t ch;
return tud_cdc_n_read(itf, &ch, 1) ? (int32_t) ch : -1;
}
// Clear the received FIFO
void tud_cdc_n_read_flush(uint8_t itf);
// Get a byte from FIFO without removing it
bool tud_cdc_n_peek(uint8_t itf, uint8_t* ui8);
// Write bytes to TX FIFO, data may remain in the FIFO for a while
uint32_t tud_cdc_n_write(uint8_t itf, void const* buffer, uint32_t bufsize);
// Write a byte
TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_cdc_n_write_char(uint8_t itf, char ch) {
return tud_cdc_n_write(itf, &ch, 1);
}
// Write a null-terminated string
TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_cdc_n_write_str(uint8_t itf, char const* str) {
return tud_cdc_n_write(itf, str, strlen(str));
}
// Force sending data if possible, return number of forced bytes
uint32_t tud_cdc_n_write_flush(uint8_t itf);
// Return the number of bytes (characters) available for writing to TX FIFO buffer in a single n_write operation.
uint32_t tud_cdc_n_write_available(uint8_t itf);
// Clear the transmit FIFO
bool tud_cdc_n_write_clear(uint8_t itf);
//--------------------------------------------------------------------+
// Application API (Single Port)
//--------------------------------------------------------------------+
TU_ATTR_ALWAYS_INLINE static inline bool tud_cdc_ready(void) {
return tud_cdc_n_ready(0);
}
TU_ATTR_ALWAYS_INLINE static inline bool tud_cdc_connected(void) {
return tud_cdc_n_connected(0);
}
TU_ATTR_ALWAYS_INLINE static inline uint8_t tud_cdc_get_line_state(void) {
return tud_cdc_n_get_line_state(0);
}
TU_ATTR_ALWAYS_INLINE static inline void tud_cdc_get_line_coding(cdc_line_coding_t* coding) {
tud_cdc_n_get_line_coding(0, coding);
}
TU_ATTR_ALWAYS_INLINE static inline void tud_cdc_set_wanted_char(char wanted) {
tud_cdc_n_set_wanted_char(0, wanted);
}
TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_cdc_available(void) {
return tud_cdc_n_available(0);
}
TU_ATTR_ALWAYS_INLINE static inline int32_t tud_cdc_read_char(void) {
return tud_cdc_n_read_char(0);
}
TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_cdc_read(void* buffer, uint32_t bufsize) {
return tud_cdc_n_read(0, buffer, bufsize);
}
TU_ATTR_ALWAYS_INLINE static inline void tud_cdc_read_flush(void) {
tud_cdc_n_read_flush(0);
}
TU_ATTR_ALWAYS_INLINE static inline bool tud_cdc_peek(uint8_t* ui8) {
return tud_cdc_n_peek(0, ui8);
}
TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_cdc_write_char(char ch) {
return tud_cdc_n_write_char(0, ch);
}
TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_cdc_write(void const* buffer, uint32_t bufsize) {
return tud_cdc_n_write(0, buffer, bufsize);
}
TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_cdc_write_str(char const* str) {
return tud_cdc_n_write_str(0, str);
}
TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_cdc_write_flush(void) {
return tud_cdc_n_write_flush(0);
}
TU_ATTR_ALWAYS_INLINE static inline uint32_t tud_cdc_write_available(void) {
return tud_cdc_n_write_available(0);
}
TU_ATTR_ALWAYS_INLINE static inline bool tud_cdc_write_clear(void) {
return tud_cdc_n_write_clear(0);
}
//--------------------------------------------------------------------+
// Application Callback API (weak is optional)
//--------------------------------------------------------------------+
// Invoked when received new data
TU_ATTR_WEAK void tud_cdc_rx_cb(uint8_t itf);
// Invoked when received `wanted_char`
TU_ATTR_WEAK void tud_cdc_rx_wanted_cb(uint8_t itf, char wanted_char);
// Invoked when a TX is complete and therefore space becomes available in TX buffer
TU_ATTR_WEAK void tud_cdc_tx_complete_cb(uint8_t itf);
// Invoked when line state DTR & RTS are changed via SET_CONTROL_LINE_STATE
TU_ATTR_WEAK void tud_cdc_line_state_cb(uint8_t itf, bool dtr, bool rts);
// Invoked when line coding is change via SET_LINE_CODING
TU_ATTR_WEAK void tud_cdc_line_coding_cb(uint8_t itf, cdc_line_coding_t const* p_line_coding);
// Invoked when received send break
TU_ATTR_WEAK void tud_cdc_send_break_cb(uint8_t itf, uint16_t duration_ms);
//--------------------------------------------------------------------+
// INTERNAL USBD-CLASS DRIVER API
//--------------------------------------------------------------------+
void cdcd_init (void);
bool cdcd_deinit (void);
void cdcd_reset (uint8_t rhport);
uint16_t cdcd_open (uint8_t rhport, tusb_desc_interface_t const * itf_desc, uint16_t max_len);
bool cdcd_control_xfer_cb (uint8_t rhport, uint8_t stage, tusb_control_request_t const * request);
bool cdcd_xfer_cb (uint8_t rhport, uint8_t ep_addr, xfer_result_t result, uint32_t xferred_bytes);
#ifdef __cplusplus
}
#endif
#endif /* _TUSB_CDC_DEVICE_H_ */
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