mirror of
https://gitea.osmocom.org/sim-card/simtrace2.git
synced 2026-03-16 21:28:33 +03:00
987f59aa02
The PERST is thus no longer busy-waiting but starting a timer to release the PERST after 1ms.
77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
/* Code to control the PERST lines of attached modems
|
|
*
|
|
* Depending on the board this is running on, it might be possible
|
|
* for the controller to set the status of the PERST input line of
|
|
* the cellular modem. If the board supports this, it sets the
|
|
* PIN_PERST1 and/or PIN_PERST2 defines in its board.h file.
|
|
*/
|
|
|
|
#include "board.h"
|
|
#include "wwan_perst.h"
|
|
#include "osmocom/core/timer.h"
|
|
|
|
#define PERST_DURATION_MS 1
|
|
|
|
#ifdef PIN_PERST1
|
|
static const Pin pin_perst1 = PIN_PERST1;
|
|
static struct osmo_timer_list perst1_timer;
|
|
#endif
|
|
|
|
#ifdef PIN_PERST2
|
|
static const Pin pin_perst2 = PIN_PERST2;
|
|
static struct osmo_timer_list perst2_timer;
|
|
#endif
|
|
|
|
static void perst_tmr_cb(void *data)
|
|
{
|
|
const Pin *pin = data;
|
|
/* release the (low-active) reset */
|
|
PIO_Set(pin);
|
|
}
|
|
|
|
int wwan_perst_do_reset(int modem_nr)
|
|
{
|
|
const Pin *pin;
|
|
struct osmo_timer_list *tmr;
|
|
|
|
switch (modem_nr) {
|
|
#ifdef PIN_PERST1
|
|
case 1:
|
|
pin = &pin_perst1;
|
|
tmr = &perst1_timer;
|
|
break;
|
|
#endif
|
|
#ifdef PIN_PERST2
|
|
case 2:
|
|
pin = &pin_perst2;
|
|
tmr = &perst2_timer;
|
|
break;
|
|
#endif
|
|
default:
|
|
return -1;
|
|
}
|
|
PIO_Clear(pin);
|
|
osmo_timer_schedule(tmr, PERST_DURATION_MS/1000, (PERST_DURATION_MS%1000)*1000);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int wwan_perst_init(void)
|
|
{
|
|
int num_perst = 0;
|
|
#ifdef PIN_PERST1
|
|
PIO_Configure(&pin_perst1, 1);
|
|
perst1_timer.cb = perst_tmr_cb;
|
|
perst1_timer.data = (void *) &pin_perst1;
|
|
num_perst++;
|
|
#endif
|
|
|
|
#ifdef PIN_PERST2
|
|
PIO_Configure(&pin_perst2, 1);
|
|
perst2_timer.cb = perst_tmr_cb;
|
|
perst2_timer.data = (void *) &pin_perst2;
|
|
num_perst++;
|
|
#endif
|
|
return num_perst;
|
|
}
|