findFree
Indexed filename string combiner with some extra's: -checks the SDcard how many tables are saved using the same prefix (only as long as indices follow up, counter stops when it finds an unused index number). -seperate filename outputs for selected filename (for loading) and free filename (for saving) -wraps the index input so it can only select from the available indices. -3 extra load inputs: first index (normally index 000) last index (free index minus one, eg. index 011 if index 012 is empty, in other words, last one that you've saved) random index (randomly selects an index number from the available indices)
Inlets
bool32.rising trigger
int32 index
bool32 first
bool32 last
bool32 rnd
Outlets
bool32 autoload
charptr32 selected
charptr32 free
Attributes
table prefix
table suffix
Displays
int32.label free
int32.label sel
int ntrig, stop;
int cnt = 0;
char c[64], C[64];
int offset;
int pval, first, I;ntrig = 0;
strcpy(&c[0], "attr_prefix000attr_suffix");
offset = strlen("attr_prefix");
strcpy(&C[0], "attr_prefix000attr_suffix");
pval = 0;
cnt = 0;
stop = 0;if (inlet_findFree && !ntrig) {
stop = 0;
ntrig = 1;
} else if ((!inlet_findFree) && ntrig) {
ntrig = 0;
}
while (!stop) {
int i = cnt;
int i0 = i / 10;
C[offset + 2] = '0' + i - 10 * i0;
i = i0;
i0 = i / 10;
C[offset + 1] = '0' + i - 10 * i0;
i = i0;
i0 = i / 10;
C[offset + 0] = '0' + i - 10 * i0;
FIL FileObject;
FRESULT err;
err = f_open(&FileObject, &C[0], FA_READ | FA_OPEN_EXISTING);
if (err == FR_OK) {
cnt += 1;
} else if (err != FR_OK) {
stop = 1;
}
}
outlet_autoload = 0;
if ((inlet_index) != pval) {
pval = inlet_index;
int i = inlet_index % (cnt > 0 ? cnt : 1);
I = i;
int i0 = i / 10;
c[offset + 2] = '0' + i - 10 * i0;
i = i0;
i0 = i / 10;
c[offset + 1] = '0' + i - 10 * i0;
i = i0;
i0 = i / 10;
c[offset + 0] = '0' + i - 10 * i0;
outlet_autoload = 1;
}
int trg = inlet_first || inlet_last || inlet_rnd;
if (trg && !first) {
first = 1;
int i = 0;
if (inlet_last) {
i = cnt - 1;
} else if (inlet_rnd) {
i = (int32_t)((GenerateRandomNumber() >> 6) % cnt);
}
I = i;
int i0 = i / 10;
c[offset + 2] = '0' + i - 10 * i0;
i = i0;
i0 = i / 10;
c[offset + 1] = '0' + i - 10 * i0;
i = i0;
i0 = i / 10;
c[offset + 0] = '0' + i - 10 * i0;
outlet_autoload = 1;
} else if (!trg) {
first = 0;
}
outlet_selected = &c[0];
outlet_free = &C[0];
disp_free = cnt;
disp_sel = I;