mirror of
https://gitea.osmocom.org/sim-card/simtrace2.git
synced 2026-03-17 13:48:32 +03:00
59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
#include <osmocom/core/timer.h>
|
|
#include "board.h"
|
|
#include "utils.h"
|
|
#include "card_pres.h"
|
|
|
|
#define NUM_CARDPRES 2
|
|
|
|
#define TIMER_INTERVAL_MS 500
|
|
|
|
static const Pin pin_cardpres[NUM_CARDPRES] = { PIN_DET_USIM1_PRES, PIN_DET_USIM2_PRES };
|
|
static int last_state[NUM_CARDPRES] = { -1, -1 };
|
|
static struct osmo_timer_list cardpres_timer;
|
|
|
|
/* Determine if a SIM card is present in the given slot */
|
|
int is_card_present(int port)
|
|
{
|
|
const Pin *pin;
|
|
int present;
|
|
|
|
if (port < 1 || port > NUM_CARDPRES)
|
|
return -1;
|
|
pin = &pin_cardpres[port-1];
|
|
|
|
/* Card present signals are low-active, as we have a switch
|
|
* against GND and an internal-pull-up in the SAM3 */
|
|
present = PIO_Get(pin) ? 0 : 1;
|
|
|
|
return present;
|
|
}
|
|
|
|
static void cardpres_tmr_cb(void *data)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 1; i <= ARRAY_SIZE(pin_cardpres); i++) {
|
|
int state = is_card_present(i);
|
|
if (state != last_state[i-1]) {
|
|
TRACE_INFO("Card Detect %d Status %d -> %d\r\n", i, last_state[i], state);
|
|
/* FIXME: report to USB host */
|
|
last_state[i-1] = state;
|
|
}
|
|
}
|
|
|
|
osmo_timer_schedule(&cardpres_timer, 0, TIMER_INTERVAL_MS*1000);
|
|
}
|
|
|
|
int card_present_init(void)
|
|
{
|
|
unsigned int i;
|
|
|
|
PIO_Configure(pin_cardpres, ARRAY_SIZE(pin_cardpres));
|
|
|
|
/* start timer */
|
|
cardpres_timer.cb = cardpres_tmr_cb;
|
|
osmo_timer_schedule(&cardpres_timer, 0, TIMER_INTERVAL_MS*1000);
|
|
|
|
return 2;
|
|
}
|