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Software for White Rabbit PTP Core
Commit b9cac100 authored by Tristan Gingold's avatar Tristan Gingold
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cmd_pll: remove checkvco (now part of freqmon)

parent b826e1a4
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shell/cmd_pll.c
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......@@ -26,7 +26,6 @@ static const char * const pll_menu[] =
[6] = "stop",
[7] = "sdac",
[8] = "gdac",
[9] = "checkvco"
};
/* Number of arguments for the sub-commands. Mind the order! */
......@@ -41,59 +40,8 @@ static const unsigned char nargs[] =
[6] = 1,
[7] = 2,
[8] = 1,
[9] = 0
};
static int calc_apr(int meas_min, int meas_max, int f_center )
{
// apr_min is in PPM
int64_t delta_low = meas_min - f_center;
int64_t delta_hi = meas_max - f_center;
uint64_t u_delta_low, u_delta_hi;
int ppm_lo, ppm_hi;
if(delta_low >= 0)
return -1;
if(delta_hi <= 0)
return -1;
/* __div64_32 divides 64 by 32; result is in the 64 argument. */
u_delta_low = -delta_low * 1000000LL;
__div64_32(&u_delta_low, f_center);
ppm_lo = (int)u_delta_low;
u_delta_hi = delta_hi * 1000000LL;
__div64_32(&u_delta_hi, f_center);
ppm_hi = (int)u_delta_hi;
return ppm_lo < ppm_hi ? ppm_lo : ppm_hi;
}
static void check_vco_frequencies(void)
{
//disable_irq();
int f_min, f_max;
pp_printf("SoftPLL VCO Frequency/APR test:\n");
spll_set_dac(-1, 0);
f_min = spll_measure_frequency(SPLL_OSC_DMTD);
spll_set_dac(-1, 65535);
f_max = spll_measure_frequency(SPLL_OSC_DMTD);
pp_printf("DMTD VCO: Low=%d Hz Hi=%d Hz, APR = %d ppm.\n", f_min, f_max, calc_apr(f_min, f_max, 62500000));
spll_set_dac(0, 0);
f_min = spll_measure_frequency(SPLL_OSC_REF);
spll_set_dac(0, 65535);
f_max = spll_measure_frequency(SPLL_OSC_REF);
pp_printf("REF VCO: Low=%d Hz Hi=%d Hz, APR = %d ppm.\n", f_min, f_max, calc_apr(f_min, f_max, REF_CLOCK_FREQ_HZ));
f_min = spll_measure_frequency(SPLL_OSC_EXT);
pp_printf("EXT clock: Freq=%d Hz\n", f_min);
}
static int cmd_pll(const char *args[])
{
unsigned narg;
......@@ -144,9 +92,6 @@ static int cmd_pll(const char *args[])
case 8:
pp_printf("%d\n", spll_get_dac(vals[1]));
return 0;
case 9:
check_vco_frequencies();
return 0;
default:
return 0;
}
......
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