Interface Programming Information and Examples
CYW920706WCDEVAL Hardware User Guide Doc. No.: 002-16535 Rev. **
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WICED_BT_TRACE( "sample_gpio_app_management_cback %d\n\r", event );
switch( event )
{
/* Bluetooth stack enabled */
case BTM_ENABLED_EVT:
/* Initializes the GPIO driver */
wiced_hal_mia_init( );
wiced_hal_gpio_init( );
wiced_hal_mia_enable_mia_interrupt( TRUE );
wiced_hal_mia_enable_lhl_interrupt( TRUE );
/* Sample function configures LED pin as output
* sends a square wave on it
* if testing pin 31 then disable puart*/
gpio_test_led( );
/* Sample function configures GPIO as input. Enable interrupt.
* Register a call back function to handle on interrupt*/
gpio_set_input_interrupt( );
break;
default:
break;
}
return result;
}
void gpio_interrrupt_handler(void *data, uint8_t port_pin)
{
static uint32_t prev_blink_interval = APP_TIMEOUT_IN_SECONDS_A;
uint32_t curr_blink_interval = 0;
/* Get the status of interrupt on P# */
if ( wiced_hal_gpio_get_pin_interrupt_status( WICED_GPIO_BUTTON ) )
{
/* Clear the gpio interrupt */
wiced_hal_gpio_clear_pin_interrupt_status( WICED_GPIO_BUTTON );
}
/* stop the led blink timer */
wiced_stop_timer( &seconds_timer );
/* toggle the blink time interval */
curr_blink_interval = (APP_TIMEOUT_IN_SECONDS_A == prev_blink_interval)
?APP_TIMEOUT_IN_SECONDS_B:APP_TIMEOUT_IN_SECONDS_A;
wiced_start_timer( &seconds_timer, curr_blink_interval );
WICED_BT_TRACE("gpio_interrupt_handler : %d\n\r", curr_blink_interval);
/* update the previous blink interval */
prev_blink_interval = curr_blink_interval;
}
void gpio_set_input_interrupt( )
{
uint16_t pin_config;
/* Configure GPIO PIN# as input, pull up and interrupt on rising edge and output
* value as high (pin should be configured before registering interrupt handler )*/
wiced_hal_gpio_configure_pin( WICED_GPIO_BUTTON, WICED_GPIO_BUTTON_SETTINGS(
GPIO_EN_INT_RISING_EDGE ), WICED_GPIO_BUTTON_DEFAULT_STATE );
