FreeCalypso > hg > fc-rfcal-tools
annotate autocal/vcxomain.c @ 60:81e8f7e99d89
fc-rfcal-rxband: upload of GMagic to DUT implemented
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Sat, 27 May 2017 23:35:06 +0000 |
parents | 6e8f2728c7f5 |
children | 7ad5836d3b87 |
rev | line source |
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1 /* |
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2 * This module contains the main() function for fc-rfcal-vcxo. |
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3 */ |
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4 |
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5 #include <math.h> |
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6 #include <stdio.h> |
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7 #include <stdint.h> |
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8 #include <stdlib.h> |
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9 #include <endian.h> |
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10 #include <rvinterf/l1tm.h> |
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11 #include <rvinterf/exitcodes.h> |
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12 #include "afcparams.h" |
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13 #include "stdband.h" |
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14 |
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15 #define VCXOCAL_BAND 900 |
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16 #define VCXOCAL_BAND_RFPW RFPW_STD_BAND(6, 0) |
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17 #define VCXOCAL_ARFCN 40 |
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18 |
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19 extern float vcxo_freq_meas(); |
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20 |
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21 static float freq_max_neg, freq_max_pos; |
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22 static float lin_a, lin_b, lin_a2, lin_b2; |
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23 static int zero_search_dac1, zero_search_dac2, zero_search_incr; |
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24 static float zero_search_freq1, zero_search_freq2; |
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25 static float dac_min, dac_max, dac_init; |
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26 static int dac_init_int; |
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27 static float Psi_sta, Psi_st; |
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28 |
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29 struct afcparams afcparams_host, afcparams_arm; |
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30 |
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31 prepare_rf_test_system() |
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32 { |
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33 char cmd[80]; |
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34 |
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35 printf("Preparing RF test system for VCXO calibration\n"); |
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36 sprintf(cmd, "vcxo-cal-setup %d %d\n", VCXOCAL_BAND, VCXOCAL_ARFCN); |
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37 tsid_command(cmd); |
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38 return(0); |
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39 } |
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40 |
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41 main(argc, argv) |
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42 char **argv; |
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43 { |
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44 socket_pathname_options(argc, argv); |
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45 connect_rvinterf_socket(); |
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46 connect_tsid_socket(); |
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47 setlinebuf(stdout); /* to allow logging with tee */ |
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48 prepare_rf_test_system(); |
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49 |
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50 printf("Putting the DUT into Test Mode\n"); |
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51 do_tms(1); |
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52 do_rfpw(STD_BAND_FLAG, VCXOCAL_BAND_RFPW); |
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53 do_rfpw(TCH_ARFCN, VCXOCAL_ARFCN); |
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54 do_rfpw(AFC_ENA_FLAG, 0); |
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55 do_txpw(TX_PWR_LEVEL, 12); |
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56 printf("Starting RF Tx on the DUT\n"); |
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57 do_rfe(RX_TX_TCH); |
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58 |
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59 /* initial measurements at the DAC extremes */ |
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60 freq_max_neg = vcxo_freq_meas(-2048, "max-neg"); |
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61 freq_max_pos = vcxo_freq_meas(2048, "max-pos"); |
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62 lin_a = (freq_max_pos - freq_max_neg) / 4096.0f; |
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63 lin_b = freq_max_pos - lin_a * 2048.0f; |
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64 zero_search_dac1 = -lin_b / lin_a; |
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65 zero_search_freq1 = vcxo_freq_meas(zero_search_dac1, "zero-search"); |
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66 |
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67 /* search for zero crossing */ |
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68 if (zero_search_freq1 < 0) |
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69 zero_search_incr = 100; |
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70 else |
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71 zero_search_incr = -100; |
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72 for (;;) { |
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73 zero_search_dac2 = zero_search_dac1 + zero_search_incr; |
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74 zero_search_freq2 = vcxo_freq_meas(zero_search_dac2, |
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75 "zero-search"); |
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76 if (zero_search_incr > 0 && zero_search_freq2 >= 0) |
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77 break; |
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78 if (zero_search_incr < 0 && zero_search_freq2 < 0) |
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79 break; |
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80 zero_search_dac1 = zero_search_dac2; |
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81 zero_search_freq1 = zero_search_freq2; |
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82 } |
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83 |
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84 /* second linear approximation */ |
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85 lin_a2 = (zero_search_freq2 - zero_search_freq1) / |
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86 (float)(zero_search_dac2 - zero_search_dac1); |
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87 lin_b2 = zero_search_freq2 - lin_a2 * zero_search_dac2; |
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88 |
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89 /* DAC settings */ |
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90 dac_min = (-13500.0f - lin_b) / lin_a; |
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91 dac_max = (13500.0f - lin_b) / lin_a; |
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92 dac_init = -lin_b2 / lin_a2; |
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93 dac_init_int = (int) dac_init; |
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94 |
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95 /* check the frequency offset at the final DAC value */ |
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96 vcxo_freq_meas(dac_init_int, "zero-check"); |
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97 |
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98 /* done with the measurements and the Tx */ |
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99 printf("Stopping RF Tx on the DUT\n"); |
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100 do_rfe(STOP_ALL); |
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101 |
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102 /* Psi computations */ |
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103 Psi_sta = 2.0f * (float)M_PI * lin_a / 270833.0f; |
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104 Psi_st = Psi_sta * 0.8f; |
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105 |
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106 /* compute and fill afcparams */ |
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107 afcparams_host.psi_sta_inv = (unsigned)(1.0f / Psi_sta); |
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108 afcparams_host.psi_st = (unsigned)(Psi_st * 65536.0f); |
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109 afcparams_host.psi_st_32 = (unsigned)(Psi_st * 65536.0f * 65536.0f); |
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110 afcparams_host.psi_st_inv = (unsigned)(1.0f / Psi_st); |
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111 afcparams_host.dac_center = (int)(dac_init * 8.0f); |
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112 afcparams_host.dac_min = (int)(dac_min * 8.0f); |
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113 afcparams_host.dac_max = (int)(dac_max * 8.0f); |
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114 afcparams_host.snr_thr = 2560; |
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115 |
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116 /* print them out */ |
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117 printf("afcparams Psi_sta_inv: %u\n", afcparams_host.psi_sta_inv); |
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118 printf("afcparams Psi_st: %u\n", afcparams_host.psi_st); |
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119 printf("afcparams Psi_st_32: %u\n", afcparams_host.psi_st_32); |
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120 printf("afcparams Psi_st_inv: %u\n", afcparams_host.psi_st_inv); |
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121 printf("afcparams DAC_INIT*8: %d\n", afcparams_host.dac_center); |
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122 printf("afcparams DAC_MIN*8: %d\n", afcparams_host.dac_min); |
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123 printf("afcparams DAC_MAX*8: %d\n", afcparams_host.dac_max); |
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124 printf("afcparams snr_thr: %d\n", afcparams_host.snr_thr); |
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125 |
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126 /* convert to LE for upload to the DUT */ |
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127 afcparams_arm.psi_sta_inv = htole32(afcparams_host.psi_sta_inv); |
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128 afcparams_arm.psi_st = htole32(afcparams_host.psi_st); |
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129 afcparams_arm.psi_st_32 = htole32(afcparams_host.psi_st_32); |
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130 afcparams_arm.psi_st_inv = htole32(afcparams_host.psi_st_inv); |
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131 afcparams_arm.dac_center = htole16(afcparams_host.dac_center); |
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132 afcparams_arm.dac_min = htole16(afcparams_host.dac_min); |
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133 afcparams_arm.dac_max = htole16(afcparams_host.dac_max); |
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134 afcparams_arm.snr_thr = htole16(afcparams_host.snr_thr); |
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135 |
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136 /* send them up */ |
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137 printf("Uploading afcparams and INITIAL_AFC_DAC to the DUT\n"); |
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138 do_rftw(AFC_PARAMS, &afcparams_arm, sizeof(struct afcparams)); |
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139 do_rfpw(INITIAL_AFC_DAC, dac_init_int); |
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140 printf("Saving rf-cal and rf-cfg in FFS\n"); |
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141 misc_enable(CFG_WRITE_RF_CAL); |
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142 misc_enable(CFG_WRITE_RF_CFG); |
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143 |
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144 exit(0); |
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145 } |