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lc resonate calculator stuff

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This commit is contained in:
iceman1001 2021-10-10 11:48:21 +02:00
parent c93dfb712f
commit 7dd5943d32
1 changed files with 38 additions and 1 deletions
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39
client/src/cmdanalyse.c
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@ -979,14 +979,22 @@ static int CmdAnalyseFreq(const char *Cmd) {
CLIParserContext *ctx;
CLIParserInit(&ctx, "analyse freq",
"calc wave lengths",
"analyse freq"
"analyse freq\n"
""
);
void *argtable[] = {
arg_param_begin,
arg_int0("F", "freq", "<int>", "resonating frequency F in hertz (Hz)"),
arg_int0("L", "cap", "<int>", "capacitance C in micro farads (F)"),
arg_int0("C", "ind", "<int>", "inductance in micro henries (H)"),
arg_param_end
};
CLIExecWithReturn(ctx, Cmd, argtable, true);
int F = arg_get_int_def(ctx, 1, 0);
int L = arg_get_int_def(ctx, 2, 0);
int C = arg_get_int_def(ctx, 3, 0);
CLIParserFree(ctx);
const double c = 299792458;
@ -1002,6 +1010,35 @@ static int CmdAnalyseFreq(const char *Cmd) {
PrintAndLogEx(INFO, " 125 kHz has %f m, rf range %f m", len_125, rf_range_125);
PrintAndLogEx(INFO, " 134 kHz has %f m, rf range %f m", len_134, rf_range_134);
PrintAndLogEx(INFO, " 13.56 mHz has %f m, rf range %f m", len_1356, rf_range_1356);
if (F == 0 && C == 0 && L == 0)
return PM3_SUCCESS;
PrintAndLogEx(INFO, "");
PrintAndLogEx(INFO, "Resonant frequency calculator");
// From https://goodcalculators.com/resonant-frequency-calculator/
// Calc Resonant Frequency [Hz]
// f = 1 / (2π √L C)
if (F == 0) {
double calc_freq = 1 / (2 * M_PI * sqrtf((L * C)) );
PrintAndLogEx(INFO, "Resonating Frequency %lf Hz", calc_freq);
}
// Calc Inductance [H]
// L = 1 / (4π2 f2 C)
if (L == 0) {
double calc_inductance = 1 / (4 * (M_PI * M_PI) * (F * F) * C );
PrintAndLogEx(INFO, "Inductance %lf Henries", calc_inductance);
}
// Capacitance [F]
// C = 1 / (4π2 f2 L)
if (C == 0) {
double calc_capacitance = 1 / (4 * (M_PI * M_PI) * (F * F) * L);
PrintAndLogEx(INFO, "Capacitance %lf Farads", calc_capacitance);
}
return PM3_SUCCESS;
}