#include <pthread.h>

#include "iec_types_all.h"

#include "POUS.h"

#include "config.h"

#include "beremiz.h"

#define HMI_BUFFER_SIZE %(buffer_size)d

/* PLC reads from that buffer */

static char rbuf[HMI_BUFFER_SIZE];

/* PLC writes to that buffer */

static char wbuf[HMI_BUFFER_SIZE];

static pthread_mutex_t wbuf_mutex = PTHREAD_MUTEX_INITIALIZER;

static pthread_mutex_t rbuf_mutex = PTHREAD_MUTEX_INITIALIZER;

%(extern_variables_declarations)s

typedef const struct {

void *ptr;

__IEC_types_enum type;

uint32_t buf_index;

uint32_t flags;

} hmi_tree_item_t;

static hmi_tree_item_t hmi_tree_item[] = {

%(variable_decl_array)s

};

typedef void(*hmi_tree_iterator)(hmi_tree_item_t*);

void traverse_hmi_tree(hmi_tree_iterator fp)

{

unsigned int i;

for(i = 0; i < sizeof(hmi_tree_item)/sizeof(hmi_tree_item_t); i++){

hmi_tree_item_t *dsc = &hmi_tree_item[i];

if(dsc->type != UNKNOWN_ENUM)

(*fp)(dsc);

}

}

void read_iterator(hmi_tree_item_t *dsc){

/* todo */

}

void write_iterator(hmi_tree_item_t *dsc){

/* todo */

}

int __init_svghmi()

{

bzero(rbuf,sizeof(rbuf));

bzero(wbuf,sizeof(wbuf));

return 0;

}

void __cleanup_svghmi()

{

}

void __retrieve_svghmi()

{

if(!pthread_mutex_lock(&rbuf_mutex)){

pthread_mutex_unlock(&rbuf_mutex);

}

}

void __publish_svghmi()

{

if(!pthread_mutex_lock(&wbuf_mutex)){

pthread_mutex_unlock(&wbuf_mutex);

}

}