/**
* \brief Configuration function for the button sensor for all buttons.
*
* \param type This function does nothing unless type == SENSORS_ACTIVE
* \param c 0: disable the button, non-zero: enable
* \param key: One of BOARD_KEY_LEFT, BOARD_KEY_RIGHT etc
*/
static void
config_buttons(int type, int c, uint32_t key)
{
switch(type) {
case SENSORS_HW_INIT:
ti_lib_gpio_event_clear(1 << key);
ti_lib_ioc_port_configure_set(key, IOC_PORT_GPIO, BUTTON_GPIO_CFG);
ti_lib_gpio_dir_mode_set((1 << key), GPIO_DIR_MODE_IN);
gpio_interrupt_register_handler(key, button_press_handler);
break;
case SENSORS_ACTIVE:
if(c) {
ti_lib_gpio_event_clear(1 << key);
ti_lib_ioc_port_configure_set(key, IOC_PORT_GPIO, BUTTON_GPIO_CFG);
ti_lib_gpio_dir_mode_set((1 << key), GPIO_DIR_MODE_IN);
ti_lib_ioc_int_enable(key);
} else {
ti_lib_ioc_int_disable(key);
}
break;
default:
break;
}
}
/*---------------------------------------------------------------------------*/
void
gpio_interrupt_register_handler(uint8_t ioid, gpio_interrupt_handler_t f)
{
uint8_t interrupts_disabled = ti_lib_int_master_disable();
/* Clear interrupts on specified pins */
ti_lib_gpio_event_clear(1 << ioid);
handlers[ioid] = f;
/* Re-enable interrupts */
if(!interrupts_disabled) {
ti_lib_int_master_enable();
}
}