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divided tuning frequencies above 2750 MHz into three ranges with graduated IF for spur avoidance

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This commit is contained in:
Michael Ossmann
2014-03-03 16:30:48 -07:00
parent 768323e28f
commit f74e9e9dc1
1 changed files with 13 additions and 0 deletions
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13
firmware/common/tuning.c
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@ -36,6 +36,8 @@
#define MAX_BYPASS_FREQ_MHZ (2750) #define MAX_BYPASS_FREQ_MHZ (2750)
#define MIN_HP_FREQ_MHZ (2750) #define MIN_HP_FREQ_MHZ (2750)
#define MID1_HP_FREQ_MHZ (3600)
#define MID2_HP_FREQ_MHZ (5100)
#define MAX_HP_FREQ_MHZ (7250) #define MAX_HP_FREQ_MHZ (7250)
static uint32_t max2837_freq_nominal_hz=2560000000; static uint32_t max2837_freq_nominal_hz=2560000000;
@ -64,6 +66,7 @@ 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);
/* IF is graduated from 2650 MHz to 2343 MHz */
max2837_freq_nominal_hz = 2650000000 - (freq / 7); max2837_freq_nominal_hz = 2650000000 - (freq / 7);
RFFC5071_freq_mhz = (max2837_freq_nominal_hz / FREQ_ONE_MHZ) + freq_mhz; RFFC5071_freq_mhz = (max2837_freq_nominal_hz / FREQ_ONE_MHZ) + freq_mhz;
/* Set Freq and read real freq */ /* Set Freq and read real freq */
@ -85,6 +88,16 @@ bool set_freq(const uint64_t freq)
max2837_set_frequency(MAX2837_freq_hz); max2837_set_frequency(MAX2837_freq_hz);
}else if( (freq_mhz >= MIN_HP_FREQ_MHZ) && (freq_mhz <= MAX_HP_FREQ_MHZ) ) }else if( (freq_mhz >= MIN_HP_FREQ_MHZ) && (freq_mhz <= MAX_HP_FREQ_MHZ) )
{ {
if (freq_mhz < MID1_HP_FREQ_MHZ) {
/* IF is graduated from 2150 MHz to 2750 MHz */
max2837_freq_nominal_hz = 2150000000 + (((freq - 2750000000) * 60) / 85);
} else if (freq_mhz < MID2_HP_FREQ_MHZ) {
/* IF is graduated from 2350 MHz to 2650 MHz */
max2837_freq_nominal_hz = 2350000000 + ((freq - 3600000000) / 5);
} else {
/* IF is graduated from 2500 MHz to 2738 MHz */
max2837_freq_nominal_hz = 2500000000 + ((freq - 5100000000) / 9);
}
rf_path_set_filter(RF_PATH_FILTER_HIGH_PASS); rf_path_set_filter(RF_PATH_FILTER_HIGH_PASS);
RFFC5071_freq_mhz = freq_mhz - (max2837_freq_nominal_hz / FREQ_ONE_MHZ); RFFC5071_freq_mhz = freq_mhz - (max2837_freq_nominal_hz / FREQ_ONE_MHZ);
/* Set Freq and read real freq */ /* Set Freq and read real freq */