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annotate autocal/txcalchan.c @ 133:c99b1dce04ec default tip

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fc-rfcal-txcheck: check and report ramp tolerance
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 20 Dec 2021 04:22:19 +0000
parents 4c3f4231a021
children
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1 /*
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2 * This module contains the code for handling Tx calchan tables.
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3 */
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4
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5 #include <stdio.h>
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6 #include <stdlib.h>
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7 #include <stdint.h>
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8 #include <endian.h>
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9 #include <rvinterf/l1tm.h>
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10 #include <rvinterf/exitcodes.h>
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11 #include "txvout.h"
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12 #include "txband.h"
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13 #include "txcalchan.h"
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14
116
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15 extern double tx_power_meas();
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16 extern vout_t dbm_to_vout();
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17
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18 extern struct txcal_band *txcal_band;
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19 extern struct tx_level tx_levels[MAX_TX_LEVELS];
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20
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21 unsigned tx_calchan_values[TX_CALCHAN_TABLES][TX_CALCHAN_ENTRIES];
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22
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23 init_tx_calchan()
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24 {
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25 unsigned i, j;
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26
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27 for (i = 0; i < TX_CALCHAN_TABLES; i++)
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28 for (j = 0; j < TX_CALCHAN_ENTRIES; j++)
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29 tx_calchan_values[i][j] = 128;
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30 return(0);
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31 }
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32
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33 tx_calchan_one_table(tblnum)
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34 unsigned tblnum;
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35 {
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36 vout_t vout[TX_CALCHAN_ENTRIES];
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37 char cmd[80];
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38 unsigned n, arfcn, plidx;
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39 double meas;
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40 int nanflag = 0;
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41 int apc_delta;
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42 unsigned apc_wanted;
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43
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44 printf("Calibrating Tx channel correction table %u (PL #%u)\n", tblnum,
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45 txcal_band->calchan_plnum[tblnum]);
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46 do_txpw(TX_PWR_LEVEL, txcal_band->calchan_plnum[tblnum]);
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47 plidx = txcal_band->calchan_plnum[tblnum] - txcal_band->start_plnum;
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48 printf("Starting RF Tx on the DUT\n");
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49 do_rfe(RX_TX_TCH);
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50 for (n = 0; n < TX_CALCHAN_ENTRIES; n++) {
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51 arfcn = txcal_band->calchan_ranges[n].test_arfcn;
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52 sprintf(cmd, "txpwr-cal-channel %u\n", arfcn);
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53 tsid_command(cmd);
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54 do_rfpw(TCH_ARFCN, arfcn);
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55 usleep(20000);
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56 meas = tx_power_meas();
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57 printf("ARFCN=%u: %.2f dBm\n", arfcn, meas);
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58 if (isnan(meas))
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59 nanflag = 1;
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60 vout[n] = dbm_to_vout(meas);
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61 }
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62 printf("Stopping RF Tx on the DUT\n");
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63 do_rfe(STOP_ALL);
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64 if (nanflag) {
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65 printf("Error: got NaN power measurement, aborting\n");
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66 exit(ERROR_RFFAIL);
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67 }
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68
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69 for (n = 0; n < TX_CALCHAN_ENTRIES; n++) {
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70 apc_delta = (vout[txcal_band->ref_subband] - vout[n]) /
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71 tx_levels[plidx].slope;
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72 apc_wanted = tx_levels[plidx].apc + apc_delta;
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73 tx_calchan_values[tblnum][n] = (apc_wanted * 128) /
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74 tx_levels[plidx].apc;
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75 printf("ARFCN %u-%u: correction=%u\n",
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76 txcal_band->calchan_ranges[n].lower_bound,
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77 txcal_band->calchan_ranges[n].upper_bound,
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78 tx_calchan_values[tblnum][n]);
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79 }
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80 }
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81
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82 calibrate_tx_calchan()
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83 {
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84 unsigned tblnum;
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85
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86 for (tblnum = 0; tblnum < TX_CALCHAN_TABLES; tblnum++)
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87 tx_calchan_one_table(tblnum);
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88 }
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89
77
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90 upload_tx_calchan()
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91 {
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92 unsigned i, j;
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93 struct tx_calchan_entry l1_table[TX_CALCHAN_TABLES][TX_CALCHAN_ENTRIES];
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94
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95 for (i = 0; i < TX_CALCHAN_TABLES; i++) {
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96 for (j = 0; j < TX_CALCHAN_ENTRIES; j++) {
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97 l1_table[i][j].arfcn_limit =
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98 htole16(txcal_band->calchan_ranges[j].upper_bound);
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99 l1_table[i][j].chan_cal =
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100 htole16(tx_calchan_values[i][j]);
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101 }
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102 }
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103 do_rftw(TX_CAL_CHAN, l1_table, sizeof l1_table);
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104 return(0);
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105 }