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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_HOST_H_
#define _TUSB_CDC_HOST_H_
#include "cdc.h"
#ifdef __cplusplus
extern "C" {
#endif
//--------------------------------------------------------------------+
// CDC APPLICATION PUBLIC API
//--------------------------------------------------------------------+
/** \ingroup ClassDriver_CDC Communication Device Class (CDC)
* \addtogroup CDC_Serial Serial
* @{
* \defgroup CDC_Serial_Host Host
* @{ */
bool tuh_cdc_set_control_line_state(uint8_t dev_addr, bool dtr, bool rts, tuh_control_complete_cb_t complete_cb);
static inline bool tuh_cdc_connect(uint8_t dev_addr, tuh_control_complete_cb_t complete_cb)
{
return tuh_cdc_set_control_line_state(dev_addr, true, true, complete_cb);
}
static inline bool tuh_cdc_disconnect(uint8_t dev_addr, tuh_control_complete_cb_t complete_cb)
{
return tuh_cdc_set_control_line_state(dev_addr, false, false, complete_cb);
}
/** \brief Check if device support CDC Serial interface or not
* \param[in] dev_addr device address
* \retval true if device supports
* \retval false if device does not support or is not mounted
*/
bool tuh_cdc_serial_is_mounted(uint8_t dev_addr);
/** \brief Check if the interface is currently busy or not
* \param[in] dev_addr device address
* \param[in] pipeid value from \ref cdc_pipeid_t to indicate target pipe.
* \retval true if the interface is busy, meaning the stack is still transferring/waiting data from/to device
* \retval false if the interface is not busy, meaning the stack successfully transferred data from/to device
* \note This function is used to check if previous transfer is complete (success or error), so that the next transfer
* can be scheduled. User needs to make sure the corresponding interface is mounted
* (by \ref tuh_cdc_serial_is_mounted) before calling this function.
*/
bool tuh_cdc_is_busy(uint8_t dev_addr, cdc_pipeid_t pipeid);
/** \brief Perform USB OUT transfer to device
* \param[in] dev_addr device address
* \param[in] p_data Buffer containing data. Must be accessible by USB controller (see \ref CFG_TUSB_MEM_SECTION)
* \param[in] length Number of bytes to be transferred via USB bus
* \retval TUSB_ERROR_NONE on success
* \retval TUSB_ERROR_INTERFACE_IS_BUSY if the interface is already transferring data with device
* \retval TUSB_ERROR_DEVICE_NOT_READY if device is not yet configured (by SET CONFIGURED request)
* \retval TUSB_ERROR_INVALID_PARA if input parameters are not correct
* \note This function is non-blocking and returns immediately. The result of USB transfer will be reported by the
* interface's callback function. \a p_data must be declared with \ref CFG_TUSB_MEM_SECTION.
*/
bool tuh_cdc_send(uint8_t dev_addr, void const * p_data, uint32_t length, bool is_notify);
/** \brief Perform USB IN transfer to get data from device
* \param[in] dev_addr device address
* \param[in] p_buffer Buffer containing received data. Must be accessible by USB controller (see \ref CFG_TUSB_MEM_SECTION)
* \param[in] length Number of bytes to be transferred via USB bus
* \retval TUSB_ERROR_NONE on success
* \retval TUSB_ERROR_INTERFACE_IS_BUSY if the interface is already transferring data with device
* \retval TUSB_ERROR_DEVICE_NOT_READY if device is not yet configured (by SET CONFIGURED request)
* \retval TUSB_ERROR_INVALID_PARA if input parameters are not correct
* \note This function is non-blocking and returns immediately. The result of USB transfer will be reported by the
* interface's callback function. \a p_data must be declared with \ref CFG_TUSB_MEM_SECTION.
*/
bool tuh_cdc_receive(uint8_t dev_addr, void * p_buffer, uint32_t length, bool is_notify);
//--------------------------------------------------------------------+
// CDC APPLICATION CALLBACKS
//--------------------------------------------------------------------+
/** \brief Callback function that is invoked when an transferring event occurred
* \param[in] dev_addr Address of device
* \param[in] event an value from \ref xfer_result_t
* \param[in] pipe_id value from \ref cdc_pipeid_t indicate the pipe
* \param[in] xferred_bytes Number of bytes transferred via USB bus
* \note event can be one of following
* - XFER_RESULT_SUCCESS : previously scheduled transfer completes successfully.
* - XFER_RESULT_FAILED : previously scheduled transfer encountered a transaction error.
* - XFER_RESULT_STALLED : previously scheduled transfer is stalled by device.
* \note
*/
void tuh_cdc_xfer_isr(uint8_t dev_addr, xfer_result_t event, cdc_pipeid_t pipe_id, uint32_t xferred_bytes);
/// @} // group CDC_Serial_Host
/// @}
//--------------------------------------------------------------------+
// Internal Class Driver API
//--------------------------------------------------------------------+
void cdch_init (void);
bool cdch_open (uint8_t rhport, uint8_t dev_addr, tusb_desc_interface_t const *itf_desc, uint16_t max_len);
bool cdch_set_config (uint8_t dev_addr, uint8_t itf_num);
bool cdch_xfer_cb (uint8_t dev_addr, uint8_t ep_addr, xfer_result_t event, uint32_t xferred_bytes);
void cdch_close (uint8_t dev_addr);
#ifdef __cplusplus
}
#endif
#endif /* _TUSB_CDC_HOST_H_ */
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