diff options
Diffstat (limited to 'src/class/cdc/cdc_host.h')
| -rw-r--r-- | src/class/cdc/cdc_host.h | 210 |
1 files changed, 141 insertions, 69 deletions
diff --git a/src/class/cdc/cdc_host.h b/src/class/cdc/cdc_host.h index 33dbd2efb..b63dd1530 100644 --- a/src/class/cdc/cdc_host.h +++ b/src/class/cdc/cdc_host.h @@ -1,4 +1,4 @@ -/* +/* * The MIT License (MIT) * * Copyright (c) 2019 Ha Thach (tinyusb.org) @@ -34,94 +34,166 @@ #endif //--------------------------------------------------------------------+ -// CDC APPLICATION PUBLIC API +// Class Driver Configuration //--------------------------------------------------------------------+ -/** \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_xfer_cb_t complete_cb); +// Set Line Control state on enumeration/mounted: DTR ( bit 0), RTS (bit 1) +#ifndef CFG_TUH_CDC_LINE_CONTROL_ON_ENUM +#define CFG_TUH_CDC_LINE_CONTROL_ON_ENUM 0 +#endif -static inline bool tuh_cdc_connect(uint8_t dev_addr, tuh_xfer_cb_t complete_cb) -{ - return tuh_cdc_set_control_line_state(dev_addr, true, true, complete_cb); -} +// Set Line Coding on enumeration/mounted, value for cdc_line_coding_t +//#ifndef CFG_TUH_CDC_LINE_CODING_ON_ENUM +//#define CFG_TUH_CDC_LINE_CODING_ON_ENUM { 115200, CDC_LINE_CODING_STOP_BITS_1, CDC_LINE_CODING_PARITY_NONE, 8 } +//#endif + +// RX FIFO size +#ifndef CFG_TUH_CDC_RX_BUFSIZE +#define CFG_TUH_CDC_RX_BUFSIZE USBH_EPSIZE_BULK_MAX +#endif + +// RX Endpoint size +#ifndef CFG_TUH_CDC_RX_EPSIZE +#define CFG_TUH_CDC_RX_EPSIZE USBH_EPSIZE_BULK_MAX +#endif -static inline bool tuh_cdc_disconnect(uint8_t dev_addr, tuh_xfer_cb_t complete_cb) +// TX FIFO size +#ifndef CFG_TUH_CDC_TX_BUFSIZE +#define CFG_TUH_CDC_TX_BUFSIZE USBH_EPSIZE_BULK_MAX +#endif + +// TX Endpoint size +#ifndef CFG_TUH_CDC_TX_EPSIZE +#define CFG_TUH_CDC_TX_EPSIZE USBH_EPSIZE_BULK_MAX +#endif + +//--------------------------------------------------------------------+ +// Application API +//--------------------------------------------------------------------+ + +// Get Interface index from device address + interface number +// return TUSB_INDEX_INVALID_8 (0xFF) if not found +uint8_t tuh_cdc_itf_get_index(uint8_t daddr, uint8_t itf_num); + +// Get Interface information +// return true if index is correct and interface is currently mounted +bool tuh_cdc_itf_get_info(uint8_t idx, tuh_itf_info_t* info); + +// Check if a interface is mounted +bool tuh_cdc_mounted(uint8_t idx); + +// Get current DTR status +bool tuh_cdc_get_dtr(uint8_t idx); + +// Get current RTS status +bool tuh_cdc_get_rts(uint8_t idx); + +// Check if interface is connected (DTR active) +TU_ATTR_ALWAYS_INLINE static inline bool tuh_cdc_connected(uint8_t idx) { - return tuh_cdc_set_control_line_state(dev_addr, false, false, complete_cb); + return tuh_cdc_get_dtr(idx); } -/** \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); +// Get local (saved/cached) version of line coding. +// This function should return correct values if tuh_cdc_set_line_coding() / tuh_cdc_get_line_coding() +// are invoked previously or CFG_TUH_CDC_LINE_CODING_ON_ENUM is defined. +// NOTE: This function does not make any USB transfer request to device. +bool tuh_cdc_get_local_line_coding(uint8_t idx, cdc_line_coding_t* line_coding); -/** \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); +//--------------------------------------------------------------------+ +// Write API +//--------------------------------------------------------------------+ -/** \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); +// Get the number of bytes available for writing +uint32_t tuh_cdc_write_available(uint8_t idx); -/** \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); +// Write to cdc interface +uint32_t tuh_cdc_write(uint8_t idx, void const* buffer, uint32_t bufsize); + +// Force sending data if possible, return number of forced bytes +uint32_t tuh_cdc_write_flush(uint8_t idx); + +// Clear the transmit FIFO +bool tuh_cdc_write_clear(uint8_t idx); + +//--------------------------------------------------------------------+ +// Read API +//--------------------------------------------------------------------+ + +// Get the number of bytes available for reading +uint32_t tuh_cdc_read_available(uint8_t idx); + +// Read from cdc interface +uint32_t tuh_cdc_read (uint8_t idx, void* buffer, uint32_t bufsize); + +// Get a byte from RX FIFO without removing it +bool tuh_cdc_peek(uint8_t idx, uint8_t* ch); + +// Clear the received FIFO +bool tuh_cdc_read_clear (uint8_t idx); + +//--------------------------------------------------------------------+ +// Control Endpoint (Request) API +// Each Function will make a USB control transfer request to/from device +// - If complete_cb is provided, the function will return immediately and invoke +// the callback when request is complete. +// - If complete_cb is NULL, the function will block until request is complete. +// - In this case, user_data should be pointed to xfer_result_t to hold the transfer result. +// - The function will return true if transfer is successful, false otherwise. +//--------------------------------------------------------------------+ + +// Request to Set Control Line State: DTR (bit 0), RTS (bit 1) +bool tuh_cdc_set_control_line_state(uint8_t idx, uint16_t line_state, tuh_xfer_cb_t complete_cb, uintptr_t user_data); + +// Request to set baudrate +bool tuh_cdc_set_baudrate(uint8_t idx, uint32_t baudrate, tuh_xfer_cb_t complete_cb, uintptr_t user_data); + +// Request to set data format +bool tuh_cdc_set_data_format(uint8_t idx, uint8_t stop_bits, uint8_t parity, uint8_t data_bits, tuh_xfer_cb_t complete_cb, uintptr_t user_data); + +// Request to Set Line Coding = baudrate + data format +// Note: only implemented by ACM and CH34x, not supported by FTDI and CP210x yet +bool tuh_cdc_set_line_coding(uint8_t idx, cdc_line_coding_t const* line_coding, tuh_xfer_cb_t complete_cb, uintptr_t user_data); + +// Request to Get Line Coding (ACM only) +// Should only use if tuh_cdc_set_line_coding() / tuh_cdc_get_line_coding() never got invoked and +// CFG_TUH_CDC_LINE_CODING_ON_ENUM is not defined +// bool tuh_cdc_get_line_coding(uint8_t idx, cdc_line_coding_t* coding); + +// Connect by set both DTR, RTS +TU_ATTR_ALWAYS_INLINE static inline +bool tuh_cdc_connect(uint8_t idx, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { + return tuh_cdc_set_control_line_state(idx, CDC_CONTROL_LINE_STATE_DTR | CDC_CONTROL_LINE_STATE_RTS, complete_cb, user_data); +} + +// Disconnect by clear both DTR, RTS +TU_ATTR_ALWAYS_INLINE static inline +bool tuh_cdc_disconnect(uint8_t idx, tuh_xfer_cb_t complete_cb, uintptr_t user_data) { + return tuh_cdc_set_control_line_state(idx, 0x00, complete_cb, user_data); +} //--------------------------------------------------------------------+ // 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); +// Invoked when a device with CDC interface is mounted +// idx is index of cdc interface in the internal pool. +TU_ATTR_WEAK extern void tuh_cdc_mount_cb(uint8_t idx); + +// Invoked when a device with CDC interface is unmounted +TU_ATTR_WEAK extern void tuh_cdc_umount_cb(uint8_t idx); + +// Invoked when received new data +TU_ATTR_WEAK extern void tuh_cdc_rx_cb(uint8_t idx); -/// @} // group CDC_Serial_Host -/// @} +// Invoked when a TX is complete and therefore space becomes available in TX buffer +TU_ATTR_WEAK extern void tuh_cdc_tx_complete_cb(uint8_t idx); //--------------------------------------------------------------------+ // Internal Class Driver API //--------------------------------------------------------------------+ -void cdch_init (void); +bool cdch_init (void); +bool cdch_deinit (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); |