/* * Set freq/tuning between 5MHz to 6800 MHz (less than 16bits really used) * hz between 0 to 999999 Hz (not checked) * return false on error or true if success. */ bool set_freq(uint32_t freq_mhz, uint32_t freq_hz) { bool success; uint32_t RFFC5071_freq_mhz; uint32_t MAX2837_freq_hz; uint32_t real_RFFC5071_freq_hz; uint32_t tmp_hz; success = true; gpio_clear(PORT_XCVR_ENABLE, (PIN_XCVR_RXENABLE | PIN_XCVR_TXENABLE)); if(freq_mhz >= MIN_LP_FREQ_MHZ) { if(freq_mhz < MAX_LP_FREQ_MHZ) { switchctrl &= ~(SWITCHCTRL_HP | SWITCHCTRL_MIX_BYPASS); RFFC5071_freq_mhz = MAX2837_FREQ_NOMINAL_MHZ - freq_mhz; /* Set Freq and read real freq */ real_RFFC5071_freq_hz = rffc5071_set_frequency(RFFC5071_freq_mhz); if(real_RFFC5071_freq_hz < RFFC5071_freq_mhz * FREQ_ONE_MHZ) { tmp_hz = -(RFFC5071_freq_mhz * FREQ_ONE_MHZ - real_RFFC5071_freq_hz); }else { tmp_hz = (real_RFFC5071_freq_hz - RFFC5071_freq_mhz * FREQ_ONE_MHZ); } MAX2837_freq_hz = MAX2837_FREQ_NOMINAL_HZ + tmp_hz + freq_hz; max2837_set_frequency(MAX2837_freq_hz); update_switches(); }else if( (freq_mhz >= MIN_BYPASS_FREQ_MHZ) && (freq_mhz < MAX_BYPASS_FREQ_MHZ) ) { switchctrl |= SWITCHCTRL_MIX_BYPASS; MAX2837_freq_hz = (freq_mhz * FREQ_ONE_MHZ) + freq_hz; /* RFFC5071_freq_mhz <= not used in Bypass mode */ max2837_set_frequency(MAX2837_freq_hz); update_switches(); }else if( (freq_mhz >= MIN_HP_FREQ_MHZ) && (freq_mhz < MAX_HP_FREQ_MHZ) ) { switchctrl &= ~SWITCHCTRL_MIX_BYPASS; switchctrl |= SWITCHCTRL_HP; RFFC5071_freq_mhz = freq_mhz - MAX2837_FREQ_NOMINAL_MHZ; /* Set Freq and read real freq */ real_RFFC5071_freq_hz = rffc5071_set_frequency(RFFC5071_freq_mhz); if(real_RFFC5071_freq_hz < RFFC5071_freq_mhz * FREQ_ONE_MHZ) { tmp_hz = (RFFC5071_freq_mhz * FREQ_ONE_MHZ - real_RFFC5071_freq_hz); }else { tmp_hz = -(real_RFFC5071_freq_hz - RFFC5071_freq_mhz * FREQ_ONE_MHZ); } MAX2837_freq_hz = MAX2837_FREQ_NOMINAL_HZ + tmp_hz + freq_hz; max2837_set_frequency(MAX2837_freq_hz); update_switches(); }else { /* Error freq_mhz too high */ success = false; } }else { /* Error freq_mhz too low */ success = false; } if(transceiver_mode == TRANSCEIVER_MODE_RX) gpio_set(PORT_XCVR_ENABLE, PIN_XCVR_RXENABLE); else if(transceiver_mode == TRANSCEIVER_MODE_TX) gpio_set(PORT_XCVR_ENABLE, PIN_XCVR_TXENABLE); freq_mhz_cache = freq_mhz; freq_hz_cache = freq_hz; return success; }
/* * Set freq/tuning between 5MHz to 6800 MHz (less than 16bits really used) * hz between 0 to 999999 Hz (not checked) * return false on error or true if success. */ bool set_freq(uint32_t freq_mhz, uint32_t freq_hz) { bool success; uint32_t RFFC5071_freq_mhz; uint32_t MAX2837_freq_hz; uint32_t real_RFFC5071_freq_mhz; uint32_t tmp_hz; success = true; if(freq_mhz >= MIN_LP_FREQ_MHZ) { if(freq_mhz < MAX_LP_FREQ_MHZ) { switchctrl &= ~(SWITCHCTRL_HP | SWITCHCTRL_MIX_BYPASS); RFFC5071_freq_mhz = MAX2837_FREQ_NOMINAL_MHZ - freq_mhz; /* Set Freq and read real freq */ real_RFFC5071_freq_mhz = rffc5071_set_frequency(RFFC5071_freq_mhz, 0); if(real_RFFC5071_freq_mhz < RFFC5071_freq_mhz) { tmp_hz = -((RFFC5071_freq_mhz - real_RFFC5071_freq_mhz) * FREQ_ONE_MHZ); }else { tmp_hz = ((real_RFFC5071_freq_mhz - RFFC5071_freq_mhz) * FREQ_ONE_MHZ); } MAX2837_freq_hz = MAX2837_FREQ_NOMINAL_HZ + tmp_hz + freq_hz; max2837_set_frequency(MAX2837_freq_hz); update_switches(); }else if( (freq_mhz >= MIN_BYPASS_FREQ_MHZ) && (freq_mhz < MAX_BYPASS_FREQ_MHZ) ) { switchctrl |= SWITCHCTRL_MIX_BYPASS; MAX2837_freq_hz = (freq_mhz * FREQ_ONE_MHZ) + freq_hz; /* RFFC5071_freq_mhz <= not used in Bypass mode */ max2837_set_frequency(MAX2837_freq_hz); update_switches(); }else if( (freq_mhz >= MIN_HP_FREQ_MHZ) && (freq_mhz < MAX_HP_FREQ_MHZ) ) { switchctrl &= ~SWITCHCTRL_MIX_BYPASS; switchctrl |= SWITCHCTRL_HP; RFFC5071_freq_mhz = freq_mhz - MAX2837_FREQ_NOMINAL_MHZ; /* Set Freq and read real freq */ real_RFFC5071_freq_mhz = rffc5071_set_frequency(RFFC5071_freq_mhz, 0); if(real_RFFC5071_freq_mhz < RFFC5071_freq_mhz) { tmp_hz = ((RFFC5071_freq_mhz - real_RFFC5071_freq_mhz) * FREQ_ONE_MHZ); }else { tmp_hz = -((real_RFFC5071_freq_mhz - RFFC5071_freq_mhz) * FREQ_ONE_MHZ); } MAX2837_freq_hz = MAX2837_FREQ_NOMINAL_HZ + tmp_hz + freq_hz; max2837_set_frequency(MAX2837_freq_hz); update_switches(); }else { /* Error freq_mhz too high */ success = false; } }else { /* Error freq_mhz too low */ success = false; } return success; }