#include <stdint.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include "pru.h"
#include "sem.h"
#include "types.h"
#include "web.h"

Include dependency graph for web.c:

Functions
struct web_shm *	web_create_shm (void)

struct web_shm *	web_open_shm (void)

void	web_buffer_reset (struct ringbuffer *buffer, int element_size, int length)

void	web_buffer_add (struct ringbuffer buffer, int64_t data)

int64_t *	web_buffer_get (struct ringbuffer *buffer, int num)

void	web_merge_currents (uint8_t valid, int64_t dest, int64_t src, struct rl_conf conf)

void	web_handle_data (struct web_shm web_data_ptr, int sem_id, void buffer_addr, uint32_t sample_data_size, uint32_t samples_count, struct time_stamp timestamp_realtime, struct rl_conf conf)

Function Documentation

void web_buffer_add	(	struct ringbuffer *	buffer,
		int64_t *	data
	)

Add element to ring buffer

Parameters

buffer	Pointer to ring buffer
data	Pointer to data array to add

Definition at line 113 of file web.c.

References ringbuffer::data, ringbuffer::element_size, ringbuffer::filled, ringbuffer::head, and ringbuffer::length.

Referenced by web_handle_data().

int64_t* web_buffer_get	(	struct ringbuffer *	buffer,
		int	num
	)

Get pointer to a specific element of a ringbuffer

Parameters

buffer	Pointer to ring buffer
num	Element number (0 corresponds to the newest element)

Returns: pointer to desired element

Definition at line 129 of file web.c.

References ringbuffer::data, ringbuffer::element_size, ringbuffer::head, and ringbuffer::length.

Referenced by print_data().

void web_buffer_reset	(	struct ringbuffer *	buffer,
		int	element_size,
		int	length
	)

Reset web data ring buffer

Parameters

buffer	Pointer to ring buffer to reset
element_size	Desired element size in bytes
length	Buffer length in elements

Definition at line 101 of file web.c.

References ringbuffer::element_size, ringbuffer::filled, ringbuffer::head, and ringbuffer::length.

Referenced by pru_sample().

struct web_shm* web_create_shm ( void )

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
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.
Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS 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. Create shared memory for data exchange with web server

Returns: pointer to shared memory, NULL in case of failure

Definition at line 47 of file web.c.

References ERROR, rl_log(), SHMEM_DATA_KEY, SHMEM_PERMISSIONS, and web_data.

Referenced by pru_sample().

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void web_handle_data	(	struct web_shm *	web_data_ptr,
		int	sem_id,
		void *	buffer_addr,
		uint32_t	sample_data_size,
		uint32_t	samples_count,
		struct time_stamp *	timestamp_realtime,
		struct rl_conf *	conf
	)

Process the data buffer for the web interface

Parameters

web_data_ptr	Pointer to shared web data
sem_id	ID of semaphores for shared web data
buffer_addr	Pointer to buffer to handle
sample_data_size	Size of samples to read
samples_count	Number of samples to read
timestamp_realtime	time_stamp with realtime clock value
conf	Current rl_conf configuration.

Definition at line 201 of file web.c.

References BINARY_MASK, BUF100_INDEX, BUF10_INDEX, BUF1_INDEX, web_shm::buffer, BUFFER100_SIZE, BUFFER10_SIZE, BUFFER1_SIZE, calibration, CHANNEL_ENABLED, rl_conf::channels, count_channels(), DATA_SEM, rl_conf::digital_inputs, DIGITAL_INPUTS_ENABLED, rl_conf::enable_web_server, I1L_INDEX, I2L_INDEX, time_stamp::nsec, num_channels, web_shm::num_channels, NUM_CHANNELS, NUM_DIGITAL_INPUTS, NUM_I_CHANNELS, rl_calibration::offsets, PRU_DIG_SIZE, rl_log(), RL_RUNNING, rl_calibration::scales, time_stamp::sec, SEM_WRITE_TIME_OUT, set_sem(), rl_status::state, status, web_shm::time, TIME_OUT, VALID_MASK, wait_sem(), WARNING, web_buffer_add(), web_data, web_merge_currents(), and WEB_RING_BUFFER_COUNT.

Referenced by pru_sample().

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void web_merge_currents	(	uint8_t *	valid,
		int64_t *	dest,
		int64_t *	src,
		struct rl_conf *	conf
	)

Merge high/low currents for web interface

Parameters

valid	Valid information of low range current channels
dest	Pointer to destination array
src	Pointer to source array
conf	Pointer to current rl_conf configuration

Definition at line 143 of file web.c.

References CHANNEL_ENABLED, rl_conf::channels, H_L_SCALE, I1H_INDEX, I1L_INDEX, I2H_INDEX, I2L_INDEX, V1_INDEX, V2_INDEX, V3_INDEX, and V4_INDEX.

Referenced by web_handle_data().

struct web_shm* web_open_shm ( void )

Open existing shared memory for data exchange with web server

Returns: pointer to shared memory, NULL in case of failure

Definition at line 73 of file web.c.

References ERROR, rl_log(), SHMEM_DATA_KEY, SHMEM_PERMISSIONS, and web_data.

Referenced by main().

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Functions

Function Documentation