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Diffstat (limited to 'Marlin/src/HAL/DUE/usb/udi_cdc.h')
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diff --git a/Marlin/src/HAL/DUE/usb/udi_cdc.h b/Marlin/src/HAL/DUE/usb/udi_cdc.h new file mode 100644 index 0000000..0ecf7bb --- /dev/null +++ b/Marlin/src/HAL/DUE/usb/udi_cdc.h @@ -0,0 +1,810 @@ +/** + * \file + * + * \brief USB Device Communication Device Class (CDC) interface definitions. + * + * Copyright (c) 2009-2016 Atmel Corporation. All rights reserved. + * + * \asf_license_start + * + * \page License + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * 3. The name of Atmel may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 4. This software may only be redistributed and used in connection with an + * Atmel microcontroller product. + * + * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE + * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + * \asf_license_stop + * + */ +/* + * Support and FAQ: visit <a href="https://www.atmel.com/design-support/">Atmel Support</a> + */ + +#ifndef _UDI_CDC_H_ +#define _UDI_CDC_H_ + +#include "conf_usb.h" +#include "usb_protocol.h" +#include "usb_protocol_cdc.h" +#include "udd.h" +#include "udc_desc.h" +#include "udi.h" + +// Check the number of port +#ifndef UDI_CDC_PORT_NB +# define UDI_CDC_PORT_NB 1 +#endif +#if (UDI_CDC_PORT_NB < 1) || (UDI_CDC_PORT_NB > 7) +# error UDI_CDC_PORT_NB must be between 1 and 7 +#endif + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * \addtogroup udi_cdc_group_udc + * @{ + */ + +//! Global structure which contains standard UDI API for UDC +extern UDC_DESC_STORAGE udi_api_t udi_api_cdc_comm; +extern UDC_DESC_STORAGE udi_api_t udi_api_cdc_data; +//@} + +/** + * \ingroup udi_cdc_group + * \defgroup udi_cdc_group_desc USB interface descriptors + * + * The following structures provide predefined USB interface descriptors. + * It must be used to define the final USB descriptors. + */ +//@{ + +/** + * \brief Communication Class interface descriptor + * + * Interface descriptor with associated functional and endpoint + * descriptors for the CDC Communication Class interface. + */ +typedef struct { + //! Standard interface descriptor + usb_iface_desc_t iface; + //! CDC Header functional descriptor + usb_cdc_hdr_desc_t header; + //! CDC Abstract Control Model functional descriptor + usb_cdc_acm_desc_t acm; + //! CDC Union functional descriptor + usb_cdc_union_desc_t union_desc; + //! CDC Call Management functional descriptor + usb_cdc_call_mgmt_desc_t call_mgmt; + //! Notification endpoint descriptor + usb_ep_desc_t ep_notify; +} udi_cdc_comm_desc_t; + + +/** + * \brief Data Class interface descriptor + * + * Interface descriptor with associated endpoint descriptors for the + * CDC Data Class interface. + */ +typedef struct { + //! Standard interface descriptor + usb_iface_desc_t iface; + //! Data IN/OUT endpoint descriptors + usb_ep_desc_t ep_in; + usb_ep_desc_t ep_out; +} udi_cdc_data_desc_t; + + +//! CDC communication endpoints size for all speeds +#define UDI_CDC_COMM_EP_SIZE 64 +//! CDC data endpoints size for FS speed (8B, 16B, 32B, 64B) +#define UDI_CDC_DATA_EPS_FS_SIZE 64 +//! CDC data endpoints size for HS speed (512B only) +#define UDI_CDC_DATA_EPS_HS_SIZE 512 + +/** + * \name Content of interface descriptors + * Up to 7 CDC interfaces can be implemented on a USB device. + */ +//@{ +//! By default no string associated to these interfaces +#ifndef UDI_CDC_IAD_STRING_ID_0 +#define UDI_CDC_IAD_STRING_ID_0 0 +#endif +#ifndef UDI_CDC_COMM_STRING_ID_0 +#define UDI_CDC_COMM_STRING_ID_0 0 +#endif +#ifndef UDI_CDC_DATA_STRING_ID_0 +#define UDI_CDC_DATA_STRING_ID_0 0 +#endif +#define UDI_CDC_IAD_DESC_0 UDI_CDC_IAD_DESC(0) +#define UDI_CDC_COMM_DESC_0 UDI_CDC_COMM_DESC(0) +#define UDI_CDC_DATA_DESC_0_FS UDI_CDC_DATA_DESC_FS(0) +#define UDI_CDC_DATA_DESC_0_HS UDI_CDC_DATA_DESC_HS(0) + +//! By default no string associated to these interfaces +#ifndef UDI_CDC_IAD_STRING_ID_1 +#define UDI_CDC_IAD_STRING_ID_1 0 +#endif +#ifndef UDI_CDC_COMM_STRING_ID_1 +#define UDI_CDC_COMM_STRING_ID_1 0 +#endif +#ifndef UDI_CDC_DATA_STRING_ID_1 +#define UDI_CDC_DATA_STRING_ID_1 0 +#endif +#define UDI_CDC_IAD_DESC_1 UDI_CDC_IAD_DESC(1) +#define UDI_CDC_COMM_DESC_1 UDI_CDC_COMM_DESC(1) +#define UDI_CDC_DATA_DESC_1_FS UDI_CDC_DATA_DESC_FS(1) +#define UDI_CDC_DATA_DESC_1_HS UDI_CDC_DATA_DESC_HS(1) + +//! By default no string associated to these interfaces +#ifndef UDI_CDC_IAD_STRING_ID_2 +#define UDI_CDC_IAD_STRING_ID_2 0 +#endif +#ifndef UDI_CDC_COMM_STRING_ID_2 +#define UDI_CDC_COMM_STRING_ID_2 0 +#endif +#ifndef UDI_CDC_DATA_STRING_ID_2 +#define UDI_CDC_DATA_STRING_ID_2 0 +#endif +#define UDI_CDC_IAD_DESC_2 UDI_CDC_IAD_DESC(2) +#define UDI_CDC_COMM_DESC_2 UDI_CDC_COMM_DESC(2) +#define UDI_CDC_DATA_DESC_2_FS UDI_CDC_DATA_DESC_FS(2) +#define UDI_CDC_DATA_DESC_2_HS UDI_CDC_DATA_DESC_HS(2) + +//! By default no string associated to these interfaces +#ifndef UDI_CDC_IAD_STRING_ID_3 +#define UDI_CDC_IAD_STRING_ID_3 0 +#endif +#ifndef UDI_CDC_COMM_STRING_ID_3 +#define UDI_CDC_COMM_STRING_ID_3 0 +#endif +#ifndef UDI_CDC_DATA_STRING_ID_3 +#define UDI_CDC_DATA_STRING_ID_3 0 +#endif +#define UDI_CDC_IAD_DESC_3 UDI_CDC_IAD_DESC(3) +#define UDI_CDC_COMM_DESC_3 UDI_CDC_COMM_DESC(3) +#define UDI_CDC_DATA_DESC_3_FS UDI_CDC_DATA_DESC_FS(3) +#define UDI_CDC_DATA_DESC_3_HS UDI_CDC_DATA_DESC_HS(3) + +//! By default no string associated to these interfaces +#ifndef UDI_CDC_IAD_STRING_ID_4 +#define UDI_CDC_IAD_STRING_ID_4 0 +#endif +#ifndef UDI_CDC_COMM_STRING_ID_4 +#define UDI_CDC_COMM_STRING_ID_4 0 +#endif +#ifndef UDI_CDC_DATA_STRING_ID_4 +#define UDI_CDC_DATA_STRING_ID_4 0 +#endif +#define UDI_CDC_IAD_DESC_4 UDI_CDC_IAD_DESC(4) +#define UDI_CDC_COMM_DESC_4 UDI_CDC_COMM_DESC(4) +#define UDI_CDC_DATA_DESC_4_FS UDI_CDC_DATA_DESC_FS(4) +#define UDI_CDC_DATA_DESC_4_HS UDI_CDC_DATA_DESC_HS(4) + +//! By default no string associated to these interfaces +#ifndef UDI_CDC_IAD_STRING_ID_5 +#define UDI_CDC_IAD_STRING_ID_5 0 +#endif +#ifndef UDI_CDC_COMM_STRING_ID_5 +#define UDI_CDC_COMM_STRING_ID_5 0 +#endif +#ifndef UDI_CDC_DATA_STRING_ID_5 +#define UDI_CDC_DATA_STRING_ID_5 0 +#endif +#define UDI_CDC_IAD_DESC_5 UDI_CDC_IAD_DESC(5) +#define UDI_CDC_COMM_DESC_5 UDI_CDC_COMM_DESC(5) +#define UDI_CDC_DATA_DESC_5_FS UDI_CDC_DATA_DESC_FS(5) +#define UDI_CDC_DATA_DESC_5_HS UDI_CDC_DATA_DESC_HS(5) + +//! By default no string associated to these interfaces +#ifndef UDI_CDC_IAD_STRING_ID_6 +#define UDI_CDC_IAD_STRING_ID_6 0 +#endif +#ifndef UDI_CDC_COMM_STRING_ID_6 +#define UDI_CDC_COMM_STRING_ID_6 0 +#endif +#ifndef UDI_CDC_DATA_STRING_ID_6 +#define UDI_CDC_DATA_STRING_ID_6 0 +#endif +#define UDI_CDC_IAD_DESC_6 UDI_CDC_IAD_DESC(6) +#define UDI_CDC_COMM_DESC_6 UDI_CDC_COMM_DESC(6) +#define UDI_CDC_DATA_DESC_6_FS UDI_CDC_DATA_DESC_FS(6) +#define UDI_CDC_DATA_DESC_6_HS UDI_CDC_DATA_DESC_HS(6) +//@} + + +//! Content of CDC IAD interface descriptor for all speeds +#define UDI_CDC_IAD_DESC(port) { \ + .bLength = sizeof(usb_iad_desc_t),\ + .bDescriptorType = USB_DT_IAD,\ + .bInterfaceCount = 2,\ + .bFunctionClass = CDC_CLASS_COMM,\ + .bFunctionSubClass = CDC_SUBCLASS_ACM,\ + .bFunctionProtocol = CDC_PROTOCOL_V25TER,\ + .bFirstInterface = UDI_CDC_COMM_IFACE_NUMBER_##port,\ + .iFunction = UDI_CDC_IAD_STRING_ID_##port,\ + } + +//! Content of CDC COMM interface descriptor for all speeds +#define UDI_CDC_COMM_DESC(port) { \ + .iface.bLength = sizeof(usb_iface_desc_t),\ + .iface.bDescriptorType = USB_DT_INTERFACE,\ + .iface.bAlternateSetting = 0,\ + .iface.bNumEndpoints = 1,\ + .iface.bInterfaceClass = CDC_CLASS_COMM,\ + .iface.bInterfaceSubClass = CDC_SUBCLASS_ACM,\ + .iface.bInterfaceProtocol = CDC_PROTOCOL_V25TER,\ + .header.bFunctionLength = sizeof(usb_cdc_hdr_desc_t),\ + .header.bDescriptorType = CDC_CS_INTERFACE,\ + .header.bDescriptorSubtype = CDC_SCS_HEADER,\ + .header.bcdCDC = LE16(0x0110),\ + .call_mgmt.bFunctionLength = sizeof(usb_cdc_call_mgmt_desc_t),\ + .call_mgmt.bDescriptorType = CDC_CS_INTERFACE,\ + .call_mgmt.bDescriptorSubtype = CDC_SCS_CALL_MGMT,\ + .call_mgmt.bmCapabilities = \ + CDC_CALL_MGMT_SUPPORTED | CDC_CALL_MGMT_OVER_DCI,\ + .acm.bFunctionLength = sizeof(usb_cdc_acm_desc_t),\ + .acm.bDescriptorType = CDC_CS_INTERFACE,\ + .acm.bDescriptorSubtype = CDC_SCS_ACM,\ + .acm.bmCapabilities = CDC_ACM_SUPPORT_LINE_REQUESTS,\ + .union_desc.bFunctionLength = sizeof(usb_cdc_union_desc_t),\ + .union_desc.bDescriptorType = CDC_CS_INTERFACE,\ + .union_desc.bDescriptorSubtype= CDC_SCS_UNION,\ + .ep_notify.bLength = sizeof(usb_ep_desc_t),\ + .ep_notify.bDescriptorType = USB_DT_ENDPOINT,\ + .ep_notify.bmAttributes = USB_EP_TYPE_INTERRUPT,\ + .ep_notify.wMaxPacketSize = LE16(UDI_CDC_COMM_EP_SIZE),\ + .ep_notify.bInterval = 0x10,\ + .ep_notify.bEndpointAddress = UDI_CDC_COMM_EP_##port,\ + .iface.bInterfaceNumber = UDI_CDC_COMM_IFACE_NUMBER_##port,\ + .call_mgmt.bDataInterface = UDI_CDC_DATA_IFACE_NUMBER_##port,\ + .union_desc.bMasterInterface = UDI_CDC_COMM_IFACE_NUMBER_##port,\ + .union_desc.bSlaveInterface0 = UDI_CDC_DATA_IFACE_NUMBER_##port,\ + .iface.iInterface = UDI_CDC_COMM_STRING_ID_##port,\ + } + +//! Content of CDC DATA interface descriptors +#define UDI_CDC_DATA_DESC_COMMON \ + .iface.bLength = sizeof(usb_iface_desc_t),\ + .iface.bDescriptorType = USB_DT_INTERFACE,\ + .iface.bAlternateSetting = 0,\ + .iface.bNumEndpoints = 2,\ + .iface.bInterfaceClass = CDC_CLASS_DATA,\ + .iface.bInterfaceSubClass = 0,\ + .iface.bInterfaceProtocol = 0,\ + .ep_in.bLength = sizeof(usb_ep_desc_t),\ + .ep_in.bDescriptorType = USB_DT_ENDPOINT,\ + .ep_in.bmAttributes = USB_EP_TYPE_BULK,\ + .ep_in.bInterval = 0,\ + .ep_out.bLength = sizeof(usb_ep_desc_t),\ + .ep_out.bDescriptorType = USB_DT_ENDPOINT,\ + .ep_out.bmAttributes = USB_EP_TYPE_BULK,\ + .ep_out.bInterval = 0, + +#define UDI_CDC_DATA_DESC_FS(port) { \ + UDI_CDC_DATA_DESC_COMMON \ + .ep_in.wMaxPacketSize = LE16(UDI_CDC_DATA_EPS_FS_SIZE),\ + .ep_out.wMaxPacketSize = LE16(UDI_CDC_DATA_EPS_FS_SIZE),\ + .ep_in.bEndpointAddress = UDI_CDC_DATA_EP_IN_##port,\ + .ep_out.bEndpointAddress = UDI_CDC_DATA_EP_OUT_##port,\ + .iface.bInterfaceNumber = UDI_CDC_DATA_IFACE_NUMBER_##port,\ + .iface.iInterface = UDI_CDC_DATA_STRING_ID_##port,\ + } + +#define UDI_CDC_DATA_DESC_HS(port) { \ + UDI_CDC_DATA_DESC_COMMON \ + .ep_in.wMaxPacketSize = LE16(UDI_CDC_DATA_EPS_HS_SIZE),\ + .ep_out.wMaxPacketSize = LE16(UDI_CDC_DATA_EPS_HS_SIZE),\ + .ep_in.bEndpointAddress = UDI_CDC_DATA_EP_IN_##port,\ + .ep_out.bEndpointAddress = UDI_CDC_DATA_EP_OUT_##port,\ + .iface.bInterfaceNumber = UDI_CDC_DATA_IFACE_NUMBER_##port,\ + .iface.iInterface = UDI_CDC_DATA_STRING_ID_##port,\ + } + +//@} + +/** + * \ingroup udi_group + * \defgroup udi_cdc_group USB Device Interface (UDI) for Communication Class Device (CDC) + * + * Common APIs used by high level application to use this USB class. + * + * These routines are used to transfer and control data + * to/from USB CDC endpoint. + * + * See \ref udi_cdc_quickstart. + * @{ + */ + +/** + * \name Interface for application with single CDC interface support + */ +//@{ + +/** + * \brief Notify a state change of DCD signal + * + * \param b_set DCD is enabled if true, else disabled + */ +void udi_cdc_ctrl_signal_dcd(bool b_set); + +/** + * \brief Notify a state change of DSR signal + * + * \param b_set DSR is enabled if true, else disabled + */ +void udi_cdc_ctrl_signal_dsr(bool b_set); + +/** + * \brief Notify a framing error + */ +void udi_cdc_signal_framing_error(void); + +/** + * \brief Notify a parity error + */ +void udi_cdc_signal_parity_error(void); + +/** + * \brief Notify a overrun + */ +void udi_cdc_signal_overrun(void); + +/** + * \brief Gets the number of byte received + * + * \return the number of data available + */ +iram_size_t udi_cdc_get_nb_received_data(void); + +/** + * \brief This function checks if a character has been received on the CDC line + * + * \return \c 1 if a byte is ready to be read. + */ +bool udi_cdc_is_rx_ready(void); + +/** + * \brief Waits and gets a value on CDC line + * + * \return value read on CDC line + */ +int udi_cdc_getc(void); + +/** + * \brief Reads a RAM buffer on CDC line + * + * \param buf Values read + * \param size Number of value read + * + * \return the number of data remaining + */ +iram_size_t udi_cdc_read_buf(void* buf, iram_size_t size); + +/** + * \brief Non polling reads of a up to 'size' data from CDC line + * + * \param port Communication port number to manage + * \param buf Buffer where to store read data + * \param size Maximum number of data to read (size of buffer) + * + * \return the number of data effectively read + */ +iram_size_t udi_cdc_read_no_polling(void* buf, iram_size_t size); + +/** + * \brief Gets the number of free byte in TX buffer + * + * \return the number of free byte in TX buffer + */ +iram_size_t udi_cdc_get_free_tx_buffer(void); + +/** + * \brief This function checks if a new character sent is possible + * The type int is used to support scanf redirection from compiler LIB. + * + * \return \c 1 if a new character can be sent + */ +bool udi_cdc_is_tx_ready(void); + +/** + * \brief Puts a byte on CDC line + * The type int is used to support printf redirection from compiler LIB. + * + * \param value Value to put + * + * \return \c 1 if function was successfully done, otherwise \c 0. + */ +int udi_cdc_putc(int value); + +/** + * \brief Writes a RAM buffer on CDC line + * + * \param buf Values to write + * \param size Number of value to write + * + * \return the number of data remaining + */ +iram_size_t udi_cdc_write_buf(const void* buf, iram_size_t size); +//@} + +/** + * \name Interface for application with multi CDC interfaces support + */ +//@{ + +/** + * \brief Notify a state change of DCD signal + * + * \param port Communication port number to manage + * \param b_set DCD is enabled if true, else disabled + */ +void udi_cdc_multi_ctrl_signal_dcd(uint8_t port, bool b_set); + +/** + * \brief Notify a state change of DSR signal + * + * \param port Communication port number to manage + * \param b_set DSR is enabled if true, else disabled + */ +void udi_cdc_multi_ctrl_signal_dsr(uint8_t port, bool b_set); + +/** + * \brief Notify a framing error + * + * \param port Communication port number to manage + */ +void udi_cdc_multi_signal_framing_error(uint8_t port); + +/** + * \brief Notify a parity error + * + * \param port Communication port number to manage + */ +void udi_cdc_multi_signal_parity_error(uint8_t port); + +/** + * \brief Notify a overrun + * + * \param port Communication port number to manage + */ +void udi_cdc_multi_signal_overrun(uint8_t port); + +/** + * \brief Gets the number of byte received + * + * \param port Communication port number to manage + * + * \return the number of data available + */ +iram_size_t udi_cdc_multi_get_nb_received_data(uint8_t port); + +/** + * \brief This function checks if a character has been received on the CDC line + * + * \param port Communication port number to manage + * + * \return \c 1 if a byte is ready to be read. + */ +bool udi_cdc_multi_is_rx_ready(uint8_t port); + +/** + * \brief Waits and gets a value on CDC line + * + * \param port Communication port number to manage + * + * \return value read on CDC line + */ +int udi_cdc_multi_getc(uint8_t port); + +/** + * \brief Reads a RAM buffer on CDC line + * + * \param port Communication port number to manage + * \param buf Values read + * \param size Number of values read + * + * \return the number of data remaining + */ +iram_size_t udi_cdc_multi_read_buf(uint8_t port, void* buf, iram_size_t size); + +/** + * \brief Gets the number of free byte in TX buffer + * + * \param port Communication port number to manage + * + * \return the number of free byte in TX buffer + */ +iram_size_t udi_cdc_multi_get_free_tx_buffer(uint8_t port); + +/** + * \brief This function checks if a new character sent is possible + * The type int is used to support scanf redirection from compiler LIB. + * + * \param port Communication port number to manage + * + * \return \c 1 if a new character can be sent + */ +bool udi_cdc_multi_is_tx_ready(uint8_t port); + +/** + * \brief Puts a byte on CDC line + * The type int is used to support printf redirection from compiler LIB. + * + * \param port Communication port number to manage + * \param value Value to put + * + * \return \c 1 if function was successfully done, otherwise \c 0. + */ +int udi_cdc_multi_putc(uint8_t port, int value); + +/** + * \brief Writes a RAM buffer on CDC line + * + * \param port Communication port number to manage + * \param buf Values to write + * \param size Number of value to write + * + * \return the number of data remaining + */ +iram_size_t udi_cdc_multi_write_buf(uint8_t port, const void* buf, iram_size_t size); +//@} + +//@} + +/** + * \page udi_cdc_quickstart Quick start guide for USB device Communication Class Device module (UDI CDC) + * + * This is the quick start guide for the \ref udi_cdc_group + * "USB device interface CDC module (UDI CDC)" with step-by-step instructions on + * how to configure and use the modules in a selection of use cases. + * + * The use cases contain several code fragments. The code fragments in the + * steps for setup can be copied into a custom initialization function, while + * the steps for usage can be copied into, e.g., the main application function. + * + * \section udi_cdc_basic_use_case Basic use case + * In this basic use case, the "USB CDC (Single Interface Device)" module is used + * with only one communication port. + * The "USB CDC (Composite Device)" module usage is described in \ref udi_cdc_use_cases + * "Advanced use cases". + * + * \section udi_cdc_basic_use_case_setup Setup steps + * \subsection udi_cdc_basic_use_case_setup_prereq Prerequisites + * \copydetails udc_basic_use_case_setup_prereq + * \subsection udi_cdc_basic_use_case_setup_code Example code + * \copydetails udc_basic_use_case_setup_code + * \subsection udi_cdc_basic_use_case_setup_flow Workflow + * \copydetails udc_basic_use_case_setup_flow + * + * \section udi_cdc_basic_use_case_usage Usage steps + * + * \subsection udi_cdc_basic_use_case_usage_code Example code + * Content of conf_usb.h: + * \code + #define UDI_CDC_ENABLE_EXT(port) my_callback_cdc_enable() + extern bool my_callback_cdc_enable(void); + #define UDI_CDC_DISABLE_EXT(port) my_callback_cdc_disable() + extern void my_callback_cdc_disable(void); + #define UDI_CDC_LOW_RATE + + #define UDI_CDC_DEFAULT_RATE 115200 + #define UDI_CDC_DEFAULT_STOPBITS CDC_STOP_BITS_1 + #define UDI_CDC_DEFAULT_PARITY CDC_PAR_NONE + #define UDI_CDC_DEFAULT_DATABITS 8 + + #include "udi_cdc_conf.h" // At the end of conf_usb.h file +\endcode + * + * Add to application C-file: + * \code + static bool my_flag_autorize_cdc_transfert = false; + bool my_callback_cdc_enable(void) + { + my_flag_autorize_cdc_transfert = true; + return true; + } + void my_callback_cdc_disable(void) + { + my_flag_autorize_cdc_transfert = false; + } + + void task(void) + { + if (my_flag_autorize_cdc_transfert) { + udi_cdc_putc('A'); + udi_cdc_getc(); + } + } +\endcode + * + * \subsection udi_cdc_basic_use_case_setup_flow Workflow + * -# Ensure that conf_usb.h is available and contains the following configuration, + * which is the USB device CDC configuration: + * - \code #define USB_DEVICE_SERIAL_NAME "12...EF" // Disk SN for CDC \endcode + * \note The USB serial number is mandatory when a CDC interface is used. + * - \code #define UDI_CDC_ENABLE_EXT(port) my_callback_cdc_enable() + extern bool my_callback_cdc_enable(void); \endcode + * \note After the device enumeration (detecting and identifying USB devices), + * the USB host starts the device configuration. When the USB CDC interface + * from the device is accepted by the host, the USB host enables this interface and the + * UDI_CDC_ENABLE_EXT() callback function is called and return true. + * Thus, when this event is received, the data transfer on CDC interface are authorized. + * - \code #define UDI_CDC_DISABLE_EXT(port) my_callback_cdc_disable() + extern void my_callback_cdc_disable(void); \endcode + * \note When the USB device is unplugged or is reset by the USB host, the USB + * interface is disabled and the UDI_CDC_DISABLE_EXT() callback function + * is called. Thus, the data transfer must be stopped on CDC interface. + * - \code #define UDI_CDC_LOW_RATE \endcode + * \note Define it when the transfer CDC Device to Host is a low rate + * (<512000 bauds) to reduce CDC buffers size. + * - \code #define UDI_CDC_DEFAULT_RATE 115200 + #define UDI_CDC_DEFAULT_STOPBITS CDC_STOP_BITS_1 + #define UDI_CDC_DEFAULT_PARITY CDC_PAR_NONE + #define UDI_CDC_DEFAULT_DATABITS 8 \endcode + * \note Default configuration of communication port at startup. + * -# Send or wait data on CDC line: + * - \code // Waits and gets a value on CDC line + int udi_cdc_getc(void); + // Reads a RAM buffer on CDC line + iram_size_t udi_cdc_read_buf(int* buf, iram_size_t size); + // Puts a byte on CDC line + int udi_cdc_putc(int value); + // Writes a RAM buffer on CDC line + iram_size_t udi_cdc_write_buf(const int* buf, iram_size_t size); \endcode + * + * \section udi_cdc_use_cases Advanced use cases + * For more advanced use of the UDI CDC module, see the following use cases: + * - \subpage udi_cdc_use_case_composite + * - \subpage udc_use_case_1 + * - \subpage udc_use_case_2 + * - \subpage udc_use_case_3 + * - \subpage udc_use_case_4 + * - \subpage udc_use_case_5 + * - \subpage udc_use_case_6 + */ + +/** + * \page udi_cdc_use_case_composite CDC in a composite device + * + * A USB Composite Device is a USB Device which uses more than one USB class. + * In this use case, the "USB CDC (Composite Device)" module is used to + * create a USB composite device. Thus, this USB module can be associated with + * another "Composite Device" module, like "USB HID Mouse (Composite Device)". + * + * Also, you can refer to application note + * <A href="https://www.atmel.com/dyn/resources/prod_documents/doc8445.pdf"> + * AVR4902 ASF - USB Composite Device</A>. + * + * \section udi_cdc_use_case_composite_setup Setup steps + * For the setup code of this use case to work, the + * \ref udi_cdc_basic_use_case "basic use case" must be followed. + * + * \section udi_cdc_use_case_composite_usage Usage steps + * + * \subsection udi_cdc_use_case_composite_usage_code Example code + * Content of conf_usb.h: + * \code + #define USB_DEVICE_EP_CTRL_SIZE 64 + #define USB_DEVICE_NB_INTERFACE (X+2) + #define USB_DEVICE_MAX_EP (X+3) + + #define UDI_CDC_DATA_EP_IN_0 (1 | USB_EP_DIR_IN) // TX + #define UDI_CDC_DATA_EP_OUT_0 (2 | USB_EP_DIR_OUT) // RX + #define UDI_CDC_COMM_EP_0 (3 | USB_EP_DIR_IN) // Notify endpoint + #define UDI_CDC_COMM_IFACE_NUMBER_0 X+0 + #define UDI_CDC_DATA_IFACE_NUMBER_0 X+1 + + #define UDI_COMPOSITE_DESC_T \ + usb_iad_desc_t udi_cdc_iad; \ + udi_cdc_comm_desc_t udi_cdc_comm; \ + udi_cdc_data_desc_t udi_cdc_data; \ + ... + #define UDI_COMPOSITE_DESC_FS \ + .udi_cdc_iad = UDI_CDC_IAD_DESC_0, \ + .udi_cdc_comm = UDI_CDC_COMM_DESC_0, \ + .udi_cdc_data = UDI_CDC_DATA_DESC_0_FS, \ + ... + #define UDI_COMPOSITE_DESC_HS \ + .udi_cdc_iad = UDI_CDC_IAD_DESC_0, \ + .udi_cdc_comm = UDI_CDC_COMM_DESC_0, \ + .udi_cdc_data = UDI_CDC_DATA_DESC_0_HS, \ + ... + #define UDI_COMPOSITE_API \ + &udi_api_cdc_comm, \ + &udi_api_cdc_data, \ + ... +\endcode + * + * \subsection udi_cdc_use_case_composite_usage_flow Workflow + * -# Ensure that conf_usb.h is available and contains the following parameters + * required for a USB composite device configuration: + * - \code // Endpoint control size, This must be: + // - 8, 16, 32 or 64 for full speed device (8 is recommended to save RAM) + // - 64 for a high speed device + #define USB_DEVICE_EP_CTRL_SIZE 64 + // Total Number of interfaces on this USB device. + // Add 2 for CDC. + #define USB_DEVICE_NB_INTERFACE (X+2) + // Total number of endpoints on this USB device. + // This must include each endpoint for each interface. + // Add 3 for CDC. + #define USB_DEVICE_MAX_EP (X+3) \endcode + * -# Ensure that conf_usb.h contains the description of + * composite device: + * - \code // The endpoint numbers chosen by you for the CDC. + // The endpoint numbers starting from 1. + #define UDI_CDC_DATA_EP_IN_0 (1 | USB_EP_DIR_IN) // TX + #define UDI_CDC_DATA_EP_OUT_0 (2 | USB_EP_DIR_OUT) // RX + #define UDI_CDC_COMM_EP_0 (3 | USB_EP_DIR_IN) // Notify endpoint + // The interface index of an interface starting from 0 + #define UDI_CDC_COMM_IFACE_NUMBER_0 X+0 + #define UDI_CDC_DATA_IFACE_NUMBER_0 X+1 \endcode + * -# Ensure that conf_usb.h contains the following parameters + * required for a USB composite device configuration: + * - \code // USB Interfaces descriptor structure + #define UDI_COMPOSITE_DESC_T \ + ... + usb_iad_desc_t udi_cdc_iad; \ + udi_cdc_comm_desc_t udi_cdc_comm; \ + udi_cdc_data_desc_t udi_cdc_data; \ + ... + // USB Interfaces descriptor value for Full Speed + #define UDI_COMPOSITE_DESC_FS \ + ... + .udi_cdc_iad = UDI_CDC_IAD_DESC_0, \ + .udi_cdc_comm = UDI_CDC_COMM_DESC_0, \ + .udi_cdc_data = UDI_CDC_DATA_DESC_0_FS, \ + ... + // USB Interfaces descriptor value for High Speed + #define UDI_COMPOSITE_DESC_HS \ + ... + .udi_cdc_iad = UDI_CDC_IAD_DESC_0, \ + .udi_cdc_comm = UDI_CDC_COMM_DESC_0, \ + .udi_cdc_data = UDI_CDC_DATA_DESC_0_HS, \ + ... + // USB Interface APIs + #define UDI_COMPOSITE_API \ + ... + &udi_api_cdc_comm, \ + &udi_api_cdc_data, \ + ... \endcode + * - \note The descriptors order given in the four lists above must be the + * same as the order defined by all interface indexes. The interface index + * orders are defined through UDI_X_IFACE_NUMBER defines.\n + * Also, the CDC requires a USB Interface Association Descriptor (IAD) for + * composite device. + */ + +#ifdef __cplusplus +} +#endif +#endif // _UDI_CDC_H_ |