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display real sample rate with rounding error

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Signed-off-by: Steve Markgraf <steve@steve-m.de>
This commit is contained in:
Steve Markgraf 2012-03-14 03:28:48 +01:00
parent 8dc13ea3ea
commit 409073b8ab
1 changed files with 5 additions and 2 deletions
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7
src/main.c
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@ -221,15 +221,18 @@ void set_samp_rate(uint32_t samp_rate)
{
uint16_t tmp;
uint32_t rsamp_ratio;
double real_rate;
/* check for the maximum rate the resampler supports */
if (samp_rate > 3200000)
samp_rate = 3200000;
printf("Setting sample rate: %i Hz\n", samp_rate);
rsamp_ratio = (CRYSTAL_FREQ * pow(2, 22)) / samp_rate;
rsamp_ratio &= ~3;
real_rate = (CRYSTAL_FREQ * pow(2, 22)) / rsamp_ratio;
printf("Setting sample rate: %.3f Hz\n", real_rate);
tmp = (rsamp_ratio >> 16);
demod_write_reg(1, 0x9f, tmp, 2);
tmp = rsamp_ratio & 0xffff;