subscription_event_type_t Light::eventLoop() {
//get old data
HardwareCommandResult* last = this->getLastResult();
//setup temporary new values
HardwareCommandResult newReading;
//read data
if(!readVal(HWType_light, &newReading))
return EVENT_TYPE_DISABLED;
//detect event
subscription_event_type_t eventDetected = AnalogIO::checkForEvent(&newReading, last->getInt16List()[0], newReading.getInt16List()[0], (int16_t) EVENT_MIN_DIFF);
#ifdef DEBUG_HARDWARE_ENABLE
if(eventDetected != EVENT_TYPE_DISABLED) {
Serial.print(millis());
Serial.print(F(": Light::eventLoop() has found event type="));
Serial.println(eventDetected);
Serial.flush();
}
#endif
return eventDetected;
}
/*
* @brief Recherche de la clé dans la base
*
* @param kv descripteur d'accès à la base
* @param key clé
* @param val valeur modifiée par effet de bord
*/
int kv_get(KV *kv, const kv_datum *key, kv_datum *val)
{
len_t offset;
if(offset_cle(kv, key, &offset) == 1)
{
return (readVal(kv, val, offset));
}
return 0;
}
/*
* @brief Renvoie le couple key/val suivant
*
* @param kv descripteur d'accès à la base
* @param key clé modifiée par effet de bord
* @param val valeur modifiée par effet de bord
*/
int kv_next(KV *kv, kv_datum *key, kv_datum *val)
{
int pos = lseek(kv->fd4, -1, SEEK_CUR);
int existe;
if(pos == -1) {
return -1;
}
else if(pos == 0)
{
if(lseek(kv->fd4, taille_header_f, SEEK_SET) == -1) {
return -1;
}
while(read(kv->fd4, &existe, sizeof(int)))
{
if(existe == 1)
{
len_t lgtmp, off;
if(read(kv->fd4, &lgtmp, 4) < 4) {
return -1;
}
if(read(kv->fd4, &off, 4) < 4) {
return -1;
}
if(off == 1)
{
len_t cle_saut;
if(readVal(kv, key, off) == -1) {
return -1;
}
if(lseek(kv->fd3, off, SEEK_SET) < 0) {
return -1;
}
if(read(kv->fd3, &cle_saut, 4) == -1) {
return -1;
}
off = off + 4 + cle_saut;
if(readVal(kv, val, off) == -1) {
return -1;
}
return 1;
}
}
else
{
if(lseek(kv->fd4, 2 * 4, SEEK_CUR) == -1) {
return -1;
}
}
}
}
else
{
if(lseek(kv->fd4, -7, SEEK_CUR) == -1) {
return -1;
}
len_t slg1, slg2, lg;
if(read(kv->fd4, &slg1, 4) == -1) {
return -1;
}
if(read(kv->fd4, &slg2, 4) == -1) {
return -1;
}
lg = slg1 + slg2;
if(lseek(kv->fd4, taille_header_f, SEEK_SET) == -1) {
return -1;
}
while(read(kv->fd4, &existe, sizeof(int)))
{
len_t lgtmp, off;
if(read(kv->fd4, &lgtmp, 4) < 4) {
return -1;
}
if(read(kv->fd4, &off, 4) < 4) {
return -1;
}
if(existe == 1)
{
if(off == lg)
{
len_t cle_saut;
if(readVal(kv, key, off) == -1) {
return -1;
}
if(lseek(kv->fd3, off, SEEK_SET) < 0) {
return -1;
}
if(read(kv->fd3, &cle_saut, 4) == -1) {
return -1;
}
off = off + 4 + cle_saut;
if(readVal(kv, val, off) == -1) {
return -1;
}
return 1;
}
}
else if(existe == 0)
{
if(off == lg)
{
lg= off + lgtmp;
if(lseek(kv->fd4, taille_header_f, SEEK_SET) == -1) {
return -1;
}
}
}
}
}
return 0;
}
