268 lines
5.8 KiB
C
268 lines
5.8 KiB
C
/* sysmocom femtobts L1 calibration file routines*/
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/* (C) 2012 by Harald Welte <laforge@gnumonks.org>
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*
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* All Rights Reserved
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <osmocom/core/utils.h>
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#include <osmo-bts/gsm_data.h>
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#include <osmo-bts/logging.h>
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#include <sysmocom/femtobts/superfemto.h>
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#include <sysmocom/femtobts/gsml1const.h>
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#include "l1_if.h"
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#include "femtobts.h"
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struct calib_file_desc {
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const char *fname;
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GsmL1_FreqBand_t band;
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int uplink;
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int rx;
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};
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static const struct calib_file_desc calib_files[] = {
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{
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.fname = "calib_rxu_850.cfg",
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.band = GsmL1_FreqBand_850,
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.uplink = 1,
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.rx = 1,
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}, {
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.fname = "calib_rxu_900.cfg",
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.band = GsmL1_FreqBand_900,
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.uplink = 1,
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.rx = 1,
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}, {
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.fname = "calib_rxu_1800.cfg",
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.band = GsmL1_FreqBand_1800,
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.uplink = 1,
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.rx = 1,
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}, {
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.fname = "calib_rxu_1900.cfg",
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.band = GsmL1_FreqBand_1900,
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.uplink = 1,
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.rx = 1,
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}, {
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.fname = "calib_rxd_850.cfg",
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.band = GsmL1_FreqBand_850,
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.uplink = 0,
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.rx = 1,
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}, {
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.fname = "calib_rxd_900.cfg",
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.band = GsmL1_FreqBand_900,
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.uplink = 0,
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.rx = 1,
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}, {
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.fname = "calib_rxd_1800.cfg",
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.band = GsmL1_FreqBand_1800,
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.uplink = 0,
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.rx = 1,
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}, {
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.fname = "calib_rxd_1900.cfg",
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.band = GsmL1_FreqBand_1900,
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.uplink = 0,
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.rx = 1,
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}, {
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.fname = "calib_tx_850.cfg",
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.band = GsmL1_FreqBand_850,
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.uplink = 0,
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.rx = 0,
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}, {
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.fname = "calib_tx_900.cfg",
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.band = GsmL1_FreqBand_900,
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.uplink = 0,
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.rx = 0,
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}, {
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.fname = "calib_tx_1800.cfg",
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.band = GsmL1_FreqBand_1800,
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.uplink = 0,
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.rx = 0,
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}, {
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.fname = "calib_tx_1900.cfg",
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.band = GsmL1_FreqBand_1900,
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.uplink = 0,
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.rx = 0,
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},
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};
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static const unsigned int arrsize_by_band[] = {
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[GsmL1_FreqBand_850] = 124,
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[GsmL1_FreqBand_900] = 194,
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[GsmL1_FreqBand_1800] = 374,
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[GsmL1_FreqBand_1900] = 299
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};
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static float read_float(FILE *in)
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{
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float f;
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fscanf(in, "%f\n", &f);
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return f;
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}
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static int read_int(FILE *in)
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{
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int i;
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fscanf(in, "%d\n", &i);
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return i;
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}
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int calib_file_read(const char *path, const struct calib_file_desc *desc,
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SuperFemto_Prim_t *prim)
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{
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FILE *in;
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char fname[PATH_MAX];
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int i;
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fname[0] = '\0';
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snprintf(fname, sizeof(fname)-1, "%s/%s", path, desc->fname);
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fname[sizeof(fname)-1] = '\0';
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in = fopen(fname, "r");
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if (!in)
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return -1;
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#if SUPERFEMTO_API_VERSION >= SUPERFEMTO_API(2,4,0)
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if (desc->rx) {
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SuperFemto_SetRxCalibTblReq_t *rx = &prim->u.setRxCalibTblReq;
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memset(rx, 0, sizeof(*rx));
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prim->id = SuperFemto_PrimId_SetRxCalibTblReq;
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rx->freqBand = desc->band;
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rx->bUplink = desc->uplink;
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rx->fExtRxGain = read_float(in);
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rx->fRxMixGainCorr = read_float(in);
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for (i = 0; i < ARRAY_SIZE(rx->fRxLnaGainCorr); i++)
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rx->fRxLnaGainCorr[i] = read_float(in);
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for (i = 0; i < arrsize_by_band[desc->band]; i++)
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rx->fRxRollOffCorr[i] = read_float(in);
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if (desc->uplink) {
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rx->u8IqImbalMode = read_int(in);
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printf("%s: u8IqImbalMode=%d\n", desc->fname, rx->u8IqImbalMode);
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for (i = 0; i < ARRAY_SIZE(rx->u16IqImbalCorr); i++)
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rx->u16IqImbalCorr[i] = read_int(in);
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}
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} else {
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SuperFemto_SetTxCalibTblReq_t *tx = &prim->u.setTxCalibTblReq;
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memset(tx, 0, sizeof(*tx));
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prim->id = SuperFemto_PrimId_SetTxCalibTblReq;
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tx->freqBand = desc->band;
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for (i = 0; i < ARRAY_SIZE(tx->fTxGainGmsk); i++)
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tx->fTxGainGmsk[i] = read_float(in);
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tx->fTx8PskCorr = read_float(in);
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for (i = 0; i < ARRAY_SIZE(tx->fTxExtAttCorr); i++)
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tx->fTxExtAttCorr[i] = read_float(in);
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for (i = 0; i < arrsize_by_band[desc->band]; i++)
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tx->fTxRollOffCorr[i] = read_float(in);
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}
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#else
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#warning Format of calibration tables before API version 2.4.0 not supported
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#endif
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fclose(in);
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return 0;
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}
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/* iteratively download the calibration data into the L1 */
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static int calib_send_compl_cb(struct msgb *l1_msg, void *data);
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/* send the calibration table for a single specified file */
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static int calib_file_send(struct femtol1_hdl *fl1h,
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const struct calib_file_desc *desc)
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{
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struct msgb *msg;
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int rc;
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msg = sysp_msgb_alloc();
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rc = calib_file_read(fl1h->calib_path, desc, msgb_sysprim(msg));
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if (rc < 0) {
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msgb_free(msg);
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return rc;
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}
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return l1if_req_compl(fl1h, msg, 1, calib_send_compl_cb, fl1h->priv);
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}
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/* completion callback after every SetCalibTbl is confirmed */
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static int calib_send_compl_cb(struct msgb *l1_msg, void *data)
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{
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struct gsm_bts_trx *trx = data;
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struct femtol1_hdl *fl1h = trx_femtol1_hdl(trx);
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struct calib_send_state *st = &fl1h->st;
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LOGP(DL1C, LOGL_DEBUG, "L1 calibration table %s loaded\n",
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calib_files[st->last_file_idx].fname);
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st->last_file_idx++;
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if (st->last_file_idx < ARRAY_SIZE(calib_files))
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return calib_file_send(fl1h,
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&calib_files[st->last_file_idx]);
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LOGP(DL1C, LOGL_INFO, "L1 calibration table loading complete!\n");
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return 0;
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}
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int calib_load(struct femtol1_hdl *fl1h)
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{
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#if SUPERFEMTO_API_VERSION < SUPERFEMTO_API(2,4,0)
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return -1;
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#else
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return calib_file_send(fl1h, &calib_files[0]);
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#endif
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}
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#if 0
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int main(int argc, char **argv)
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{
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SuperFemto_Prim_t p;
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int i;
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for (i = 0; i < ARRAY_SIZE(calib_files); i++) {
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memset(&p, 0, sizeof(p));
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calib_read_file(argv[1], &calib_files[i], &p);
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}
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exit(0);
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}
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#endif
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