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[RFC] Enable usage of externally supplied 'TONES DATA' #39

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[RFC] Enable usage of externally supplied 'TONES DATA' #39

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2 changes: 2 additions & 0 deletions demo/decode_ft8.c
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Original file line number Diff line number Diff line change
@@ -1,3 +1,5 @@
#define _POSIX_C_SOURCE 199309L

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
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28 changes: 22 additions & 6 deletions demo/gen_ft8.c
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Original file line number Diff line number Diff line change
Expand Up @@ -120,6 +120,7 @@ int main(int argc, char** argv)
return -1;
}

uint8_t tones[128]; // Array of 79 tones (symbols)
const char* message = argv[1];
const char* wav_path = argv[2];
float frequency = 1000.0;
Expand All @@ -128,6 +129,15 @@ int main(int argc, char** argv)
frequency = atof(argv[3]);
}
bool is_ft4 = (argc > 4) && (0 == strcmp(argv[4], "-ft4"));
int num_tones = (is_ft4) ? FT4_NN : FT8_NN;
float symbol_period = (is_ft4) ? FT4_SYMBOL_PERIOD : FT8_SYMBOL_PERIOD;
float symbol_bt = (is_ft4) ? FT4_SYMBOL_BT : FT8_SYMBOL_BT;
float slot_time = (is_ft4) ? FT4_SLOT_TIME : FT8_SLOT_TIME;

if(getenv("DEBUG_TONES_DATA")) {
printf("Note: DEBUG_TONES_DATA is set! Using it to generate the WAVE file...\n");
goto DEBUG_TONES_DATA;
}

// First, pack the text data into binary message
ftx_message_t msg;
Expand All @@ -146,13 +156,7 @@ int main(int argc, char** argv)
}
printf("\n");

int num_tones = (is_ft4) ? FT4_NN : FT8_NN;
float symbol_period = (is_ft4) ? FT4_SYMBOL_PERIOD : FT8_SYMBOL_PERIOD;
float symbol_bt = (is_ft4) ? FT4_SYMBOL_BT : FT8_SYMBOL_BT;
float slot_time = (is_ft4) ? FT4_SLOT_TIME : FT8_SLOT_TIME;

// Second, encode the binary message as a sequence of FSK tones
uint8_t tones[num_tones]; // Array of 79 tones (symbols)
if (is_ft4)
{
ft4_encode(msg.payload, tones);
Expand All @@ -162,6 +166,18 @@ int main(int argc, char** argv)
ft8_encode(msg.payload, tones);
}

DEBUG_TONES_DATA:
if(getenv("DEBUG_TONES_DATA")) {
char *tmp = getenv("DEBUG_TONES_DATA");
int j = 0;

for (int i = 0; i < strlen(tmp); i++) {
if (tmp[i] == ' ')
continue;
tones[j++] = tmp[i] - '0';
}
}

printf("FSK tones: ");
for (int j = 0; j < num_tones; ++j)
{
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