| /* 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; |
| } |