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lookup.c
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lookup.c
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#include "lookup.h"
static int currTime = 0;
uint8_t getTrainNum(train_lookup *tl_ptr, uint8_t algNumIn) {
uint8_t i = 0;
for (i = 0; i < MAXTRAINS; i++) {
if (tl_ptr[i].algNum == algNumIn) {
return tl_ptr[i].trainNum;
}
}
return LOOKUP_FAILURE;
}
uint8_t getTrainSlot(train_lookup *tl_ptr, uint8_t trainNumIn) {
uint8_t i = 0;
for (i = 0; i < MAXTRAINS; i++) {
if (tl_ptr[i].trainNum == trainNumIn) {
return tl_ptr[i].trainSlot;
}
}
return LOOKUP_FAILURE;
}
void setTrainData(train_lookup *tl_ptr, uint8_t *data_from_PIC, uint8_t offset) {
int8_t min = 127;
uint8_t i = 0;
uint8_t minI = 0;
uint8_t trainFound = 0;
// Loop that finds the train if it exists
for (i = 0; i < MAXTRAINS; i++) {
if (tl_ptr[i].trainNum == data_from_PIC[offset+4]
&& tl_ptr[i].isSet == 0) {
tl_ptr[i].trainSlot = data_from_PIC[offset+2];
tl_ptr[i].accessTime = currTime++;
tl_ptr[i].isSet = 1;
trainFound = 1;
break;
}
}
// Loop that stores the train if it doesn't exist
if (!trainFound) {
for (i = 0; i < MAXTRAINS; i++) {
if (tl_ptr[i].isSet == 0) {
tl_ptr[i].trainNum = data_from_PIC[offset+4];
tl_ptr[i].trainSlot = data_from_PIC[offset+2];
tl_ptr[i].accessTime = currTime++;
tl_ptr[i].isSet = 1;
trainFound = 1;
break;
}
}
}
if (!trainFound) {
// Loop that stores the train if array is full
for (i = 0; i < MAXTRAINS; i++) {
if (tl_ptr[i].accessTime < min) {
min = tl_ptr[i].accessTime;
minI = i;
}
}
tl_ptr[minI].trainNum = data_from_PIC[offset+4];
tl_ptr[minI].trainSlot = data_from_PIC[offset+2];
tl_ptr[minI].accessTime = currTime++;
tl_ptr[minI].isSet = 1;
trainFound = 1;
}
}
void setTrainDataFromAlg(train_lookup *tl_ptr, uint8_t *data_from_Alg, uint8_t offset) {
int i = 0;
for (i = 0; i < MAXTRAINS; i++) {
if (tl_ptr[i].isSet == 0) {
tl_ptr[i].algNum = data_from_Alg[offset];
break;
}
}
}
void initTrainData(train_lookup *tl_ptr) {
tl_ptr[0].algNum = 1;
tl_ptr[0].trainNum = 3;
tl_ptr[0].trainSlot = 2;
tl_ptr[0].isSet = 1;
tl_ptr[1].algNum = 2;
tl_ptr[1].trainNum = 10;
tl_ptr[1].trainSlot = 1;
tl_ptr[1].isSet = 1;
tl_ptr[2].algNum = 3;
tl_ptr[2].trainNum = 6;
tl_ptr[2].trainSlot = 0;
tl_ptr[2].isSet = 0;
}