mirror of https://gerrit.osmocom.org/simtrace2
77 lines
2.0 KiB
C
77 lines
2.0 KiB
C
/* card presence utilities
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*
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* (C) 2016-2021 by Harald Welte <hwelte@hmw-consulting.de>
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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 General Public License as published by
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* the Free Software Foundation; either version 2 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 General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA
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*/
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#include <osmocom/core/timer.h>
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#include "board.h"
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#include "utils.h"
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#include "card_pres.h"
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#define NUM_CARDPRES 1
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#define TIMER_INTERVAL_MS 500
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static const Pin pin_cardpres[NUM_CARDPRES] = { PIN_DET_USIM1_PRES };
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static int last_state[NUM_CARDPRES] = { -1 };
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static struct osmo_timer_list cardpres_timer;
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/* Determine if a SIM card is present in the given slot */
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int is_card_present(int port)
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{
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const Pin *pin;
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int present;
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if (port < 0 || port >= NUM_CARDPRES)
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return -1;
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pin = &pin_cardpres[port];
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/* high active here */
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present = PIO_Get(pin);
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return present;
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}
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static void cardpres_tmr_cb(void *data)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_SIZE(pin_cardpres); i++) {
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int state = is_card_present(i);
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if (state != last_state[i]) {
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TRACE_INFO("%u: Card Detect Status %d -> %d\r\n", i, last_state[i], state);
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/* FIXME: report to USB host */
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last_state[i] = state;
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}
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}
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osmo_timer_schedule(&cardpres_timer, 0, TIMER_INTERVAL_MS*1000);
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}
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int card_present_init(void)
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{
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unsigned int i;
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PIO_Configure(pin_cardpres, ARRAY_SIZE(pin_cardpres));
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/* start timer */
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cardpres_timer.cb = cardpres_tmr_cb;
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osmo_timer_schedule(&cardpres_timer, 0, TIMER_INTERVAL_MS*1000);
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return 2;
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}
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