static void config_wakeup(void)
{
Pm *p_pm = PM;
/* EIC and PICOUART can wakeup the device. */
bpm_enable_wakeup_source(BPM,
(1 << BPM_BKUPWEN_EIC) | (1 << BPM_BKUPWEN_PICOUART));
p_pm->PM_AWEN = 1 << PM_AWEN_PICOUART;
p_pm->PM_IER = PM_IER_WAKE;
NVIC_SetPriority(PM_IRQn,1);
NVIC_EnableIRQ(PM_IRQn);
/* EIC can wake the device from backup mode. */
bpm_enable_backup_pin(BPM, 1 << GPIO_PUSH_BUTTON_EIC_LINE);
}
/**
* \brief Event Button Init.
*/
void event_button_init(void)
{
// Structure holding the configuration parameters
// of the EIC module.
struct eic_line_config eic_line_conf;
// Initialize EIC Controller
sysclk_enable_peripheral_clock(EIC);
// Enable level-triggered interrupt.
eic_line_conf.eic_mode = EIC_MODE_EDGE_TRIGGERED;
// Interrupt will trigger on low-level.
eic_line_conf.eic_level = EIC_LEVEL_LOW_LEVEL;
// Edge on falling edge
eic_line_conf.eic_edge = EIC_EDGE_FALLING_EDGE;
// Enable filter.
eic_line_conf.eic_filter = EIC_FILTER_DISABLED;
// For Wake Up mode, initialize in asynchronous mode
eic_line_conf.eic_async = EIC_ASYNCH_MODE;
// Enable clock for EIC controller
eic_enable(EIC);
// Init the EIC controller with the options
eic_line_set_config(EIC, GPIO_PUSH_BUTTON_EIC_LINE,
&eic_line_conf);
// Init the callback
eic_line_set_callback(EIC, GPIO_PUSH_BUTTON_EIC_LINE, eic5_callback,
EIC_5_IRQn, 1);
// Enable the EIC line
eic_line_enable(EIC, GPIO_PUSH_BUTTON_EIC_LINE);
// EIC can wake the device from backup mode
bpm_enable_wakeup_source(BPM, BPM_BKUP_WAKEUP_SRC_EIC
| BPM_BKUP_WAKEUP_SRC_AST);
// EIC can wake the device from backup mode
bpm_enable_backup_pin(BPM, 1 << GPIO_PUSH_BUTTON_EIC_LINE);
// Retain I/O lines after wakeup from backup
bpm_disable_io_retention(BPM);
bpm_enable_io_retention(BPM);
bpm_enable_fast_wakeup(BPM);
sysclk_disable_peripheral_clock(EIC);
event_pbEvent = false;
// Initialize WDT Controller
sysclk_enable_peripheral_clock(WDT);
enable_wdt();
}
/**
* \brief Initializes and enables interrupt pin change
*/
static void ui_enable_asynchronous_interrupt(void)
{
/* Initialize EIC for button wakeup */
sysclk_enable_peripheral_clock(EIC);
struct eic_line_config eic_opt ={
.eic_mode = EIC_MODE_EDGE_TRIGGERED,
.eic_edge = EIC_EDGE_FALLING_EDGE,
.eic_level = EIC_LEVEL_LOW_LEVEL,
.eic_filter = EIC_FILTER_DISABLED,
.eic_async = EIC_ASYNCH_MODE
};
eic_enable(EIC);
eic_line_set_config(EIC, UI_WAKEUP_EIC_LINE, &eic_opt);
eic_line_set_callback(EIC, UI_WAKEUP_EIC_LINE, UI_WAKEUP_HANDLER,
UI_WAKEUP_IRQN, UI_WAKEUP_IRQ_LEVEL);
eic_line_enable(EIC, UI_WAKEUP_EIC_LINE);
eic_line_enable_interrupt(EIC, UI_WAKEUP_EIC_LINE);
/* EIC can wakeup the device */
bpm_enable_wakeup_source(BPM, (1 << UI_WAKEUP_BPM_SRC));
/* EIC can wake the device from backup mode */
bpm_enable_backup_pin(BPM, 1 << UI_WAKEUP_EIC_LINE);
}
