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high-side injection and graduated IF for tuning from 0 to 2150 MHz

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This commit is contained in:
Michael Ossmann
2014-03-03 14:08:38 -07:00
parent d051c42e3a
commit cd9a1c1366
1 changed files with 3 additions and 2 deletions
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5
firmware/common/tuning.c
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@ -66,7 +66,8 @@ bool set_freq(const uint64_t freq)
if(freq_mhz < MAX_LP_FREQ_MHZ) if(freq_mhz < MAX_LP_FREQ_MHZ)
{ {
rf_path_set_filter(RF_PATH_FILTER_LOW_PASS); rf_path_set_filter(RF_PATH_FILTER_LOW_PASS);
RFFC5071_freq_mhz = (max2837_freq_nominal_hz / FREQ_ONE_MHZ) - freq_mhz; max2837_freq_nominal_hz = 2650000000 - (freq / 7);
RFFC5071_freq_mhz = (max2837_freq_nominal_hz / FREQ_ONE_MHZ) + freq_mhz;
/* Set Freq and read real freq */ /* Set Freq and read real freq */
real_RFFC5071_freq_hz = rffc5071_set_frequency(RFFC5071_freq_mhz); real_RFFC5071_freq_hz = rffc5071_set_frequency(RFFC5071_freq_mhz);
if(real_RFFC5071_freq_hz < RFFC5071_freq_mhz * FREQ_ONE_MHZ) if(real_RFFC5071_freq_hz < RFFC5071_freq_mhz * FREQ_ONE_MHZ)
@ -76,7 +77,7 @@ bool set_freq(const uint64_t freq)
{ {
tmp_hz = (real_RFFC5071_freq_hz - RFFC5071_freq_mhz * FREQ_ONE_MHZ); tmp_hz = (real_RFFC5071_freq_hz - RFFC5071_freq_mhz * FREQ_ONE_MHZ);
} }
MAX2837_freq_hz = max2837_freq_nominal_hz + tmp_hz + freq_hz; MAX2837_freq_hz = max2837_freq_nominal_hz - tmp_hz + freq_hz;
max2837_set_frequency(MAX2837_freq_hz); max2837_set_frequency(MAX2837_freq_hz);
}else if( (freq_mhz >= MIN_BYPASS_FREQ_MHZ) && (freq_mhz < MAX_BYPASS_FREQ_MHZ) ) }else if( (freq_mhz >= MIN_BYPASS_FREQ_MHZ) && (freq_mhz < MAX_BYPASS_FREQ_MHZ) )
{ {