diff options
Diffstat (limited to 'host/lib')
| -rw-r--r-- | host/lib/usrp/usrp1/codec_ctrl.cpp | 73 |
1 files changed, 29 insertions, 44 deletions
diff --git a/host/lib/usrp/usrp1/codec_ctrl.cpp b/host/lib/usrp/usrp1/codec_ctrl.cpp index 1b4411002..9df29da0e 100644 --- a/host/lib/usrp/usrp1/codec_ctrl.cpp +++ b/host/lib/usrp/usrp1/codec_ctrl.cpp @@ -71,7 +71,6 @@ private: usrp1_clock_ctrl::sptr _clock_ctrl; int _spi_slave; ad9862_regs_t _ad9862_regs; - aux_adc_t _last_aux_adc_a, _last_aux_adc_b; void send_reg(boost::uint8_t addr); void recv_reg(boost::uint8_t addr); @@ -134,6 +133,10 @@ usrp1_codec_ctrl_impl::usrp1_codec_ctrl_impl(usrp1_iface::sptr iface, this->send_reg(addr); } + //always start conversions for aux ADC + _ad9862_regs.start_a = 1; + _ad9862_regs.start_b = 1; + //aux adc clock _ad9862_regs.clk_4 = ad9862_regs_t::CLK_4_1_4; this->send_reg(34); @@ -206,55 +209,37 @@ static double aux_adc_to_volts(boost::uint8_t high, boost::uint8_t low) return double(((boost::uint16_t(high) << 2) | low)*3.3)/0x3ff; } -double usrp1_codec_ctrl_impl::read_aux_adc(aux_adc_t which) -{ - //check to see if the switch needs to be set - bool write_switch = false; - switch(which) { - +double usrp1_codec_ctrl_impl::read_aux_adc(aux_adc_t which){ + switch(which){ case AUX_ADC_A1: + _ad9862_regs.select_a = ad9862_regs_t::SELECT_A_AUX_ADC1; + this->send_reg(34); //start conversion and select mux + this->recv_reg(28); //read the value (2 bytes, 2 reads) + this->recv_reg(29); + return aux_adc_to_volts(_ad9862_regs.aux_adc_a1_9_2, _ad9862_regs.aux_adc_a1_1_0); + case AUX_ADC_A2: - if (which != _last_aux_adc_a) { - _ad9862_regs.select_a = (which == AUX_ADC_A1)? - ad9862_regs_t::SELECT_A_AUX_ADC1: ad9862_regs_t::SELECT_A_AUX_ADC2; - _last_aux_adc_a = which; - write_switch = true; - } - break; + _ad9862_regs.select_a = ad9862_regs_t::SELECT_A_AUX_ADC2; + this->send_reg(34); //start conversion and select mux + this->recv_reg(26); //read the value (2 bytes, 2 reads) + this->recv_reg(27); + return aux_adc_to_volts(_ad9862_regs.aux_adc_a2_9_2, _ad9862_regs.aux_adc_a2_1_0); case AUX_ADC_B1: - case AUX_ADC_B2: - if (which != _last_aux_adc_b) { - _ad9862_regs.select_b = (which == AUX_ADC_B1)? - ad9862_regs_t::SELECT_B_AUX_ADC1: ad9862_regs_t::SELECT_B_AUX_ADC2; - _last_aux_adc_b = which; - write_switch = true; - } - break; + _ad9862_regs.select_b = ad9862_regs_t::SELECT_B_AUX_ADC1; + this->send_reg(34); //start conversion and select mux + this->recv_reg(32); //read the value (2 bytes, 2 reads) + this->recv_reg(33); + return aux_adc_to_volts(_ad9862_regs.aux_adc_b1_9_2, _ad9862_regs.aux_adc_b1_1_0); + case AUX_ADC_B2: + _ad9862_regs.select_b = ad9862_regs_t::SELECT_B_AUX_ADC2; + this->send_reg(34); //start conversion and select mux + this->recv_reg(30); //read the value (2 bytes, 2 reads) + this->recv_reg(31); + return aux_adc_to_volts(_ad9862_regs.aux_adc_b2_9_2, _ad9862_regs.aux_adc_b2_1_0); } - - //write the switch if it changed - if(write_switch) this->send_reg(34); - - //map aux adcs to register values to read - static const uhd::dict<aux_adc_t, boost::uint8_t> aux_dac_to_addr = boost::assign::map_list_of - (AUX_ADC_A2, 26) (AUX_ADC_A1, 28) - (AUX_ADC_B2, 30) (AUX_ADC_B1, 32) - ; - - //read the value - this->recv_reg(aux_dac_to_addr[which]+0); - this->recv_reg(aux_dac_to_addr[which]+1); - - //return the value scaled to volts - switch(which) { - case AUX_ADC_A1: return aux_adc_to_volts(_ad9862_regs.aux_adc_a1_9_2, _ad9862_regs.aux_adc_a1_1_0); - case AUX_ADC_A2: return aux_adc_to_volts(_ad9862_regs.aux_adc_a2_9_2, _ad9862_regs.aux_adc_a2_1_0); - case AUX_ADC_B1: return aux_adc_to_volts(_ad9862_regs.aux_adc_b1_9_2, _ad9862_regs.aux_adc_b1_1_0); - case AUX_ADC_B2: return aux_adc_to_volts(_ad9862_regs.aux_adc_b2_9_2, _ad9862_regs.aux_adc_b2_1_0); - } - UHD_ASSERT_THROW(false); + UHD_THROW_INVALID_CODE_PATH(); } /*********************************************************************** |