diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/tuner_fc0012.c | 16 | ||||
| -rw-r--r-- | src/tuner_fc0013.c | 16 |
2 files changed, 28 insertions, 4 deletions
diff --git a/src/tuner_fc0012.c b/src/tuner_fc0012.c index 91ac882..4ad2045 100644 --- a/src/tuner_fc0012.c +++ b/src/tuner_fc0012.c @@ -22,6 +22,7 @@ */ #include <stdint.h> +#include <stdio.h> #include "rtlsdr_i2c.h" #include "tuner_fc0012.h" @@ -215,12 +216,23 @@ int fc0012_set_params(void *dev, uint32_t freq, uint32_t bandwidth) am = (uint8_t)(xdiv - (8 * pm)); if (am < 2) { - reg[1] = am + 8; - reg[2] = pm - 1; + am += 8; + pm--; + } + + if (pm > 31) { + reg[1] = am + (8 * (pm - 31)); + reg[2] = 31; } else { reg[1] = am; reg[2] = pm; } + + if (reg[1] > 15) { + fprintf(stderr, "[FC0012] no valid PLL combination " + "found for %u Hz!\n", freq); + return -1; + } } else { /* fix for frequency less than 45 MHz */ reg[1] = 0x06; diff --git a/src/tuner_fc0013.c b/src/tuner_fc0013.c index 5423941..76e4b68 100644 --- a/src/tuner_fc0013.c +++ b/src/tuner_fc0013.c @@ -25,6 +25,7 @@ */ #include <stdint.h> +#include <stdio.h> #include "rtlsdr_i2c.h" #include "tuner_fc0013.h" @@ -320,12 +321,23 @@ int fc0013_set_params(void *dev, uint32_t freq, uint32_t bandwidth) am = (uint8_t)(xdiv - (8 * pm)); if (am < 2) { - reg[1] = am + 8; - reg[2] = pm - 1; + am += 8; + pm--; + } + + if (pm > 31) { + reg[1] = am + (8 * (pm - 31)); + reg[2] = 31; } else { reg[1] = am; reg[2] = pm; } + + if (reg[1] > 15) { + fprintf(stderr, "[FC0013] no valid PLL combination " + "found for %u Hz!\n", freq); + return -1; + } } else { /* fix for frequency less than 45 MHz */ reg[1] = 0x06; |