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tinyUSB/src/class/usbtmc/usbtmc.h

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/*
* The MIT License (MIT)
*
* Copyright (c) 2019 N Conrad
*
* 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_USBTMC_H__
#define _TUSB_USBTMC_H__
#include "common/tusb_common.h"
/* Implements USBTMC Revision 1.0, April 14, 2003
String descriptors must have a "LANGID=0x409"/US English string.
Characters must be 0x20 (' ') to 0x7E ('~') ASCII,
But MUST not contain: "/:?\*
Also must not have leading or trailing space (' ')
Device descriptor must state USB version 0x0200 or greater
If USB488DeviceCapabilites.D2 = 1 (SR1), then there must be a INT endpoint.
*/
#define USBTMC_VERSION 0x0100
#define USBTMC_488_VERSION 0x0100
typedef enum {
USBTMC_MSGID_DEV_DEP_MSG_OUT = 1u,
USBTMC_MSGID_DEV_DEP_MSG_IN = 2u,
USBTMC_MSGID_VENDOR_SPECIFIC_MSG_OUT = 126u,
USBTMC_MSGID_VENDOR_SPECIFIC_IN = 127u,
USBTMC_MSGID_USB488_TRIGGER = 128u,
} usbtmc_msgid_enum;
/// \brief Message header (For BULK OUT and BULK IN); 4 bytes
typedef struct TU_ATTR_PACKED
{
uint8_t MsgID ; ///< Message type ID (usbtmc_msgid_enum)
uint8_t bTag ; ///< Transfer ID 1<=bTag<=255
uint8_t bTagInverse ; ///< Complement of the tag
uint8_t _reserved ; ///< Must be 0x00
} usbtmc_msg_header_t;
typedef struct TU_ATTR_PACKED
{
usbtmc_msg_header_t header;
uint8_t data[8];
} usbtmc_msg_generic_t;
/* Uses on the bulk-out endpoint: */
// Next 8 bytes are message-specific
typedef struct TU_ATTR_PACKED {
usbtmc_msg_header_t header ; ///< Header
uint32_t TransferSize ; ///< Transfer size; LSB first
struct {
uint8_t EOM : 1 ; ///< EOM set on last byte
} bmTransferAttributes;
uint8_t _reserved[3];
} usbtmc_msg_request_dev_dep_out;
// Next 8 bytes are message-specific
typedef struct TU_ATTR_PACKED {
usbtmc_msg_header_t header ; ///< Header
uint32_t TransferSize ; ///< Transfer size; LSB first
struct {
uint8_t : 0;
uint8_t TermCharEnabled : 1 ; ///< "The Bulk-IN transfer must terminate on the specified TermChar."; CAPABILITIES must list TermChar
} bmTransferAttributes;
uint8_t TermChar;
uint8_t _reserved[2];
} usbtmc_msg_request_dev_dep_in;
/* Bulk-in headers */
typedef struct TU_ATTR_PACKED
{
usbtmc_msg_header_t header;
uint32_t TransferSize;
struct {
uint8_t EOM: 1; ///< Last byte of transfer is the end of the message
uint8_t UsingTermChar: 1; ///< Support TermChar && Request.TermCharEnabled && last char in transfer is TermChar
} bmTransferAttributes;
uint8_t _reserved[3];
} usbtmc_msg_dev_dep_msg_in_header_t;
/* Unsupported vendor things.... Are these ever used?*/
typedef struct TU_ATTR_PACKED {
usbtmc_msg_header_t header ; ///< Header
uint32_t TransferSize ; ///< Transfer size; LSB first
uint8_t _reserved[4];
} usbtmc_msg_request_vendor_specific_out;
typedef struct TU_ATTR_PACKED {
usbtmc_msg_header_t header ; ///< Header
uint32_t TransferSize ; ///< Transfer size; LSB first
uint8_t _reserved[4];
} usbtmc_msg_request_vendor_specific_in;
// Control request type should use tusb_control_request_t
/*
typedef struct TU_ATTR_PACKED {
struct {
uint8_t Recipient : 5 ; ///< EOM set on last byte
uint8_t Type : 2 ; ///< EOM set on last byte
uint8_t DirectionToHost : 1 ; ///< 0 is OUT, 1 is IN
} bmRequestType;
uint8_t bRequest ; ///< If bmRequestType.Type = Class, see usmtmc_request_type_enum
uint16_t wValue ;
uint16_t wIndex ;
uint16_t wLength ; // Number of bytes in data stage
} usbtmc_class_specific_control_req;
*/
// bulk-in protocol errors
enum {
USBTMC_BULK_IN_ERR_INCOMPLETE_HEADER = 1u,
USBTMC_BULK_IN_ERR_UNSUPPORTED = 2u,
USBTMC_BULK_IN_ERR_BAD_PARAMETER = 3u,
USBTMC_BULK_IN_ERR_DATA_TOO_SHORT = 4u,
USBTMC_BULK_IN_ERR_DATA_TOO_LONG = 5u,
};
// bult-in halt errors
enum {
USBTMC_BULK_IN_ERR = 1u, ///< receives a USBTMC command message that expects a response while a
/// Bulk-IN transfer is in progress
};
typedef enum {
USBTMC_bREQUEST_INITIATE_ABORT_BULK_OUT = 1u,
USBTMC_bREQUEST_CHECK_ABORT_BULK_OUT_STATUS = 2u,
USBTMC_bREQUEST_INITIATE_ABORT_BULK_IN = 3u,
USBTMC_bREQUEST_CHECK_ABORT_BULK_IN_STATUS = 4u,
USBTMC_bREQUEST_INITIATE_CLEAR = 5u,
USBTMC_bREQUEST_CHECK_CLEAR_STATUS = 6u,
USBTMC_bREQUEST_GET_CAPABILITIES = 7u,
USBTMC_bREQUEST_INDICATOR_PULSE = 64u, // Optional
/****** USBTMC 488 *************/
USBTMC488_bREQUEST_READ_STATUS_BYTE = 128u,
USBTMC488_bREQUEST_REN_CONTROL = 160u,
USBTMC488_bREQUEST_GO_TO_LOCAL = 161u,
USBTMC488_bREQUEST_LOCAL_LOCKOUT = 162u,
} usmtmc_request_type_enum;
typedef enum {
USBTMC_STATUS_SUCCESS = 0x01,
USBTMC_STATUS_PENDING = 0x02,
USBTMC_STATUS_FAILED = 0x80,
USBTMC_STATUS_TRANSFER_NOT_IN_PROGRESS = 0x81,
USBTMC_STATUS_SPLIT_NOT_IN_PROGRESS = 0x82,
USBTMC_STATUS_SPLIT_IN_PROGRESS = 0x83
} usbtmc_status_enum;
/************************************************************
* Control Responses
*/
typedef struct TU_ATTR_PACKED {
uint8_t USBTMC_status; ///< usbtmc_status_enum
uint8_t _reserved;
uint16_t bcdUSBTMC; ///< USBTMC_VERSION
struct {
uint8_t listenOnly :1;
uint8_t talkOnly :1;
uint8_t supportsIndicatorPulse :1;
} bmIntfcCapabilities;
struct {
uint8_t canEndBulkInOnTermChar :1;
} bmDevCapabilities;
uint8_t _reserved2[6];
uint8_t _reserved3[12];
} usbtmc_response_capabilities_t;
TU_VERIFY_STATIC(sizeof(usbtmc_response_capabilities_t) == 0x18, "struct wrong length");
typedef struct TU_ATTR_PACKED
{
uint8_t USBTMC_status; ///< usbtmc_status_enum
uint8_t _reserved;
uint16_t bcdUSBTMC; ///< USBTMC_VERSION
struct
{
uint8_t listenOnly :1;
uint8_t talkOnly :1;
uint8_t supportsIndicatorPulse :1;
} bmIntfcCapabilities;
struct
{
uint8_t canEndBulkInOnTermChar :1;
} bmDevCapabilities;
uint8_t _reserved2[6];
uint16_t bcdUSB488;
struct
{
uint8_t is488_2 :1;
uint8_t supportsREN_GTL_LLO :1;
uint8_t supportsTrigger :1;
} bmIntfcCapabilities488;
struct
{
uint8_t SCPI :1;
uint8_t SR1 :1;
uint8_t RL1 :1;
uint8_t DT1 :1;
} bmDevCapabilities488;
uint8_t _reserved3[8];
} usbtmc_response_capabilities_488_t;
TU_VERIFY_STATIC(sizeof(usbtmc_response_capabilities_488_t) == 0x18, "struct wrong length");
typedef struct TU_ATTR_PACKED
{
uint8_t USBTMC_status;
uint8_t bTag;
uint8_t statusByte;
} usbtmc_read_stb_rsp_488_t;
TU_VERIFY_STATIC(sizeof(usbtmc_read_stb_rsp_488_t) == 3u, "struct wrong length");
typedef struct TU_ATTR_PACKET
{
union {
struct {
uint8_t bTag : 7;
uint8_t one : 1;
} bNotify1Struct;
uint8_t bNotify1;
};
uint8_t StatusByte;
} usbtmc_read_stb_interrupt_488_t;
TU_VERIFY_STATIC(sizeof(usbtmc_read_stb_interrupt_488_t) == 2u, "struct wrong length");
#endif
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