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/* Code to read/track the status of the WWAN LEDs of attached modems
*
* Depending on the board this is running on, it might be possible
* for the controller to read the status of the WWAN LED output lines of
* the cellular modem. If the board supports this, it sets the
* PIN_WWAN1 and/or PIN_WWAN2 defines in its board.h file.
*/
#include "board.h"
#include "wwan_led.h"
#ifdef PIN_WWAN1
static const Pin pin_wwan1 = PIN_WWAN1;
static void wwan1_irqhandler(const Pin *pPin)
{
int active = wwan_led_active(1);
TRACE_INFO("WWAN1 LED %u\r\n", active);
/* TODO: notify host via USB */
}
#endif
#ifdef PIN_WWAN2
static const Pin pin_wwan2 = PIN_WWAN2;
static void wwan2_irqhandler(const Pin *pPin)
{
int active = wwan_led_active(2);
TRACE_INFO("WWAN2 LED %u\r\n", active);
/* TODO: notify host via USB */
}
#endif
/* determine if a tiven WWAN led is currently active or not */
int wwan_led_active(int wwan)
{
const Pin *pin;
int active;
switch (wwan) {
#ifdef PIN_WWAN1
case 1:
pin = &pin_wwan1;
break;
#endif
#ifdef PIN_WWAN2
case 2:
pin = &pin_wwan2;
break;
#endif
default:
return -1;
}
active = PIO_Get(&pin_wwan1) ? 0 : 1;
return active;
}
int wwan_led_init(void)
{
int num_leds = 0;
#ifdef PIN_WWAN1
PIO_Configure(&pin_wwan1, 1);
PIO_ConfigureIt(&pin_wwan1, wwan1_irqhandler);
PIO_EnableIt(&pin_wwan1);
num_leds++;
#endif
#ifdef PIN_WWAN2
PIO_Configure(&pin_wwan2, 1);
PIO_ConfigureIt(&pin_wwan2, wwan2_irqhandler);
PIO_EnableIt(&pin_wwan2);
num_leds++;
#endif
return num_leds;
}
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