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nuttx-apps/include/logging/nxscope/nxscope.h

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/****************************************************************************
* apps/include/logging/nxscope/nxscope.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __APPS_INCLUDE_LOGGING_NXSCOPE_NXSCOPE_H
#define __APPS_INCLUDE_LOGGING_NXSCOPE_NXSCOPE_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/compiler.h>
#include <pthread.h>
#include <stdint.h>
#include <logging/nxscope/nxscope_chan.h>
#include <logging/nxscope/nxscope_intf.h>
#include <logging/nxscope/nxscope_proto.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define NXSCOPE_ENABLE_LEN (sizeof(struct nxscope_enable_data_s))
#define NXSCOPE_DIV_LEN (sizeof(struct nxscope_div_data_s))
#define NXSCOPE_START_LEN (sizeof(struct nxscope_start_data_s))
/* MSB bit in the channel type means a critical channel */
#define NXSCOPE_IS_CRICHAN(chtype) (chtype & 0x80)
/****************************************************************************
* Public Types
****************************************************************************/
/* Nxscope header ID */
enum nxscope_hdr_id_e
{
NXSCOPE_HDRID_UNDEF = 0, /* Reserved */
/* Stream frames */
NXSCOPE_HDRID_STREAM = 1, /* Stream data */
/* Get frames */
NXSCOPE_HDRID_CMNINFO = 2, /* Get nxscope common info */
NXSCOPE_HDRID_CHINFO = 3, /* Get nxscope channel info */
/* Special frames */
NXSCOPE_HDRID_ACK = 4, /* ACK/NACK */
/* Set frames.
*
* If CONFIG_LOGGING_NXSCOPE_ACKFRAMES=y this requests must
* be confirmed with ACK frames to report success or failure.
*/
NXSCOPE_HDRID_START = 5, /* Start/stop stream.
* NOTE: this frame do not follow
* 'struct nxscope_set_frame_s' format
*/
NXSCOPE_HDRID_ENABLE = 6, /* Snable/disable channels */
NXSCOPE_HDRID_DIV = 7, /* Channels divider */
/* User defined frames.
* Must be alway the last element.
*/
NXSCOPE_HDRID_USER = 8
};
/* Nxscope flags */
enum nxscope_info_flags_e
{
NXSCOPE_FLAGS_DIVIDER_SUPPORT = (1 << 0),
NXSCOPE_FLAGS_ACK_SUPPORT = (1 << 1),
NXSCOPE_FLAGS_RES2 = (1 << 2),
NXSCOPE_FLAGS_RES3 = (1 << 3),
NXSCOPE_FLAGS_RES4 = (1 << 4),
NXSCOPE_FLAGS_RES5 = (1 << 5),
NXSCOPE_FLAGS_RES6 = (1 << 6),
NXSCOPE_FLAGS_RES7 = (1 << 7),
};
/* Nxscope stream flags */
enum nxscope_stream_flags_s
{
NXSCOPE_STREAM_FLAGS_OVERFLOW = (1 << 0)
};
/* Nxscope start frame data */
begin_packed_struct struct nxscope_start_data_s
{
uint8_t start; /* Start/stop flag */
} end_packed_struct;
/* Nxscope enable channel data */
begin_packed_struct struct nxscope_enable_ch_data_s
{
uint8_t en; /* Channel enable */
} end_packed_struct;
/* Nxscope divider channel data */
begin_packed_struct struct nxscope_div_ch_data_s
{
uint8_t div; /* Channel divider - starts from 0 */
} end_packed_struct;
/* Nxscope enable frame data */
begin_packed_struct struct nxscope_enable_data_s
{
struct nxscope_enable_ch_data_s ch[1]; /* Chmax elements */
} end_packed_struct;
/* Nxscope divider frame data */
begin_packed_struct struct nxscope_div_data_s
{
struct nxscope_div_ch_data_s ch[1]; /* Chmax elements */
} end_packed_struct;
/* Set channel frame */
enum nxscope_set_frame_req_s
{
NXSCOPE_SET_REQ_SINGLE = 0, /* Single channel request */
NXSCOPE_SET_REQ_BULK = 1, /* Set different values for all channels */
NXSCOPE_SET_REQ_ALL = 2 /* Set one value for all channles */
};
/* Set frame common data */
begin_packed_struct struct nxscope_set_frame_s
{
uint8_t req; /* Request type */
uint8_t chan; /* Channel id */
uint8_t data[1]; /* n bytes data - depends on the request type */
} end_packed_struct;
/* Chanel type */
begin_packed_struct struct nxscope_chinfo_type_s
{
uint8_t dtype:5; /* Data type */
uint8_t _res:2; /* Reserved for future use */
uint8_t cri:1; /* Criticial channel - no buffering */
} end_packed_struct;
/* Chanel type union */
union nxscope_chinfo_type_u
{
struct nxscope_chinfo_type_s s;
uint8_t u8;
};
/* Nxscope channel info */
begin_packed_struct struct nxscope_chinfo_s
{
uint8_t enable; /* Enable flag */
union nxscope_chinfo_type_u type; /* Channel data type */
uint8_t vdim; /* Vector dimention */
uint8_t div; /* Divider - starts from 0 */
uint8_t mlen; /* Metadata size */
FAR char *name; /* Chanel name */
} end_packed_struct;
/* Nxscope info common */
begin_packed_struct struct nxscope_info_cmn_s
{
uint8_t chmax; /* Supported channels */
uint8_t flags; /* Flags (enum nxscope_info_flags_e) */
uint8_t rx_padding; /* RX padding (>0 if used) */
} end_packed_struct;
/* Nxscope sample hdr:
*
* +----------+-------------+----------+
* | channel | sample data | metadata |
* +----------+-------------+----------+
* | 1B | n bytes [1] | m bytes |
* +----------+-------------+----------+
*
* [1] - sizeof(channel_type) * channel_vdim
* NOTE: sample data always little-endian !
*
*/
struct nxscope_sample_s
{
uint8_t chan; /* 1 byte: Channel id - starts from 0 */
/* n bytes: Data */
/* m bytes: Metadata */
};
/* Nxscope stream data:
*
* +----------+--------------+
* | flags | samples data |
* +----------+--------------+
* | 1B | n bytes |
* +----------+--------------+
*
*/
struct nxscope_stream_s
{
uint8_t flags; /* stream flags */
struct nxscope_sample_s samples[1]; /* stream samples */
};
/* Nxscope callbacks */
struct nxscope_callbacks_s
{
/* User-defined id callback */
FAR void *userid_priv;
CODE int (*userid)(FAR void *priv, uint8_t id, FAR uint8_t *buff);
/* Start request callback */
FAR void *start_priv;
CODE int (*start)(FAR void *priv, bool start);
};
/* Nxscope general configuration */
struct nxscope_cfg_s
{
/* NOTE: It is possible to configure separate interface
* and protocol for control commands and data stream.
*/
/* Interface implementation for commands */
FAR struct nxscope_intf_s *intf_cmd;
/* Interface implementation for stream data */
FAR struct nxscope_intf_s *intf_stream;
/* Protocol implementation for commands */
FAR struct nxscope_proto_s *proto_cmd;
/* Protocol implementation for stream data */
FAR struct nxscope_proto_s *proto_stream;
/* Callbacks */
FAR struct nxscope_callbacks_s *callbacks;
/* Number of suppoted channels */
uint8_t channels;
/* Stream buffer len */
size_t streambuf_len;
/* RX buffer len */
size_t rxbuf_len;
#ifdef CONFIG_LOGGING_NXSCOPE_CRICHANNELS
/* Critical buffer len.
*
* It's the user's responsibility to correctly choose this value.
* The minimal buffer size for critical channels can be calculate
* with this formula:
* buff_size = max(proto_stream->hdrlen + 1 + type_size * vdim +
* meta_len + proto_stream->footlen)
*
* where max() means the maximum value from all initialized critical
* channels.
*
* When CONFIG_DEBUG_FEATURES is enabled the correct buffer size is
* verified in run-time.
*/
size_t cribuf_len;
#endif
/* RX padding.
*
* This option will be provided for client in common info data
* and can be useful if we use DMA for receiving frames
*/
uint8_t rx_padding;
};
/* Nxscope data */
struct nxscope_s
{
/* Nxscope interface handlers */
FAR struct nxscope_intf_s *intf_cmd;
FAR struct nxscope_intf_s *intf_stream;
/* Nxscope protocol handlers */
FAR struct nxscope_proto_s *proto_cmd;
FAR struct nxscope_proto_s *proto_stream;
/* Callbacks */
FAR struct nxscope_callbacks_s *callbacks;
/* Nxscope common info */
struct nxscope_info_cmn_s cmninfo;
/* Channels info, chmax elements */
FAR struct nxscope_chinfo_s *chinfo;
size_t chinfo_size;
/* Nxscope data */
#ifdef CONFIG_LOGGING_NXSCOPE_DIVIDER
FAR uint32_t *cntr;
#endif
uint8_t start;
/* Stream data */
FAR uint8_t *streambuf;
size_t streambuf_len;
size_t stream_i;
#ifdef CONFIG_LOGGING_NXSCOPE_CRICHANNELS
/* Critical buffer data */
FAR uint8_t *cribuf;
size_t cribuf_len;
#endif
/* RX data buffer */
FAR uint8_t *rxbuf;
size_t rxbuf_len;
size_t rxbuf_i;
/* TX data buffer */
FAR uint8_t *txbuf;
size_t txbuf_len;
/* Exclusive access */
pthread_mutex_t lock;
};
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: nxscope_init
*
* Description:
* Initialize a nxscope instance
*
* Input Parameters:
* s - a pointer to a nxscope instance
* cfg - a pointer to a nxscope configuration data
*
****************************************************************************/
int nxscope_init(FAR struct nxscope_s *s, FAR struct nxscope_cfg_s *cfg);
/****************************************************************************
* Name: nxscope_deinit
*
* Description:
* De-initialize a nxscope instance
*
* Input Parameters:
* s - a pointer to a nxscope instance
*
****************************************************************************/
void nxscope_deinit(FAR struct nxscope_s *s);
/****************************************************************************
* Name: nxscope_lock
*
* Description:
* Lock a nxscope instance
*
* Input Parameters:
* s - a pointer to a nxscope instance
*
****************************************************************************/
void nxscope_lock(FAR struct nxscope_s *s);
/****************************************************************************
* Name: nxscope_unlock
*
* Description:
* Unlock a nxscope instance
*
* Input Parameters:
* s - a pointer to a nxscope instance
*
****************************************************************************/
void nxscope_unlock(FAR struct nxscope_s *s);
/****************************************************************************
* Name: nxscope_stream
*
* Description:
* Send nxscope stream data.
*
* NOTE: It's the user's responsibility to periodically call this function.
*
* Input Parameters:
* s - a pointer to a nxscope instance
*
****************************************************************************/
int nxscope_stream(FAR struct nxscope_s *s);
/****************************************************************************
* Name: nxscope_recv
*
* Description:
* Receive and handle nxscope protocol data.
*
* NOTE: It's the user's responsibility to periodically call this function.
*
* Input Parameters:
* s - a pointer to a nxscope instance
*
****************************************************************************/
int nxscope_recv(FAR struct nxscope_s *s);
/****************************************************************************
* Name: nxscope_stream_start
*
* Description:
* Start/stop data stream
*
* Input Parameters:
* s - a pointer to a nxscope instance
* start - start/stop
*
****************************************************************************/
int nxscope_stream_start(FAR struct nxscope_s *s, bool start);
#endif /* __APPS_INCLUDE_LOGGING_NXSCOPE_NXSCOPE_H */
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