/** Handle key repeat timer alarm on timer wakeup */
static void handle_repeat_key_timer_alarm(TimerHandle *timer) {
static MidpEvent newMidpEvent;
static int midp_keycode;
if (timer != NULL) {
midp_keycode = (int)(get_timer_data(timer));
newMidpEvent.type = MIDP_KEY_EVENT;
newMidpEvent.CHR = midp_keycode;
newMidpEvent.ACTION = KEYMAP_STATE_REPEATED;
midpStoreEventAndSignalForeground(newMidpEvent);
timer = remove_timer(timer);
set_timer_wakeup(timer, get_timer_wakeup(timer) + REPEAT_PERIOD);
add_timer(timer);
}
}
/*TASK*-----------------------------------------------------
*
* Task Name : main_task
* Comments : Low power modes switching.
*
*END*-----------------------------------------------------*/
void main_task
(
uint32_t initial_data
)
{
LPM_OPERATION_MODE operation_mode;
IDLE_LOOP_STRUCT idle_loops;
uint32_t loop1;
/* Initialize switches */
button_led_init();
_int_install_unexpected_isr();
_lpm_register_wakeup_callback(BSP_LLWU_INTERRUPT_VECTOR, BSP_LLWU_INTERRUPT_PRIORITY, NULL);
/* Install interrupt for timer wakeup */
install_timer_interrupt();
/* Create global event */
if (_lwevent_create(&app_event, 0) != MQX_OK)
{
printf("\nCreating app_event failed.\n");
_task_block();
}
#if (PSP_MQX_CPU_IS_KINETIS)
if (_lpm_get_reset_source() != MQX_RESET_SOURCE_LLWU)
printf("\nMQX Low Power Modes Demo\n");
else
#endif
printf("\nWake up by reset from LLWU\n");
while (1)
{
#if (MQX_ENABLE_HSRUN)
/* Find out current mode setting */
operation_mode = _lpm_get_operation_mode();
printf("\n******************************************************************************\n");
printf("************** Operation mode : %s ***********************\n", get_operation_mode_name (operation_mode));
printf("******************************************************************************\n");
display_operation_mode_setting(operation_mode);
printf(
"Info: HSRUN operation mode is mapped on HSRUN power mode by default.\n"
" The core runs at full clock speed.\n"
" It continues the execution after entering the mode.\n"
" LED2 blinks quickly, LED1 toggles after the button press.\n");
/* Wait for button press */
printf ("Press button to move to next operation mode.\n");
_lwevent_wait_ticks (&app_event, SW_EVENT_MASK, FALSE, 0);
_lwevent_clear (&app_event, ALL_EVENTS_MASK);
printf("\nButton pressed. Moving to next operation mode.\n");
/* Change frequency to normal run mode. */
printf("\nChanging frequency to normal run mode.\n");
if (CM_ERR_OK != _lpm_set_clock_configuration(BSP_CLOCK_CONFIGURATION_0))
{
printf("Cannot change clock configuration");
_task_block();
}
/* Change the operation mode */
printf ("\nSetting operation mode to %s ... ", get_operation_mode_name (operation_mode));
printf ("%s\n", _lpm_set_operation_mode (LPM_OPERATION_MODE_RUN) == 0 ? "OK" : "ERROR");
#endif
/* Find out current mode setting */
operation_mode = _lpm_get_operation_mode();
printf("\n******************************************************************************\n");
printf("************** Operation mode : %s ***********************\n", get_operation_mode_name (operation_mode));
printf("******************************************************************************\n");
display_operation_mode_setting(operation_mode);
printf(
"Info: RUN operation mode is mapped on RUN power mode by default.\n"
" The core runs at full clock speed.\n"
" It continues the execution after entering the mode.\n"
" LED2 blinks quickly, LED1 toggles after the button press.\n");
/* Demonstration of idle task sleep feature */
printf("\nIdle task sleep feature disabled.\n");
_lpm_idle_sleep_setup (FALSE);
printf("Task suspended for 1 second to let run the idle task.\n");
_mqx_get_idle_loop_count (&idle_loops);
loop1 = idle_loops.IDLE_LOOP1;
_time_delay (1000);
_mqx_get_idle_loop_count (&idle_loops);
printf ("Idle loops per second with idle sleep disabled: %d\n", idle_loops.IDLE_LOOP1 - loop1);
printf("Idle task sleep feature enabled.\n");
_lpm_idle_sleep_setup (TRUE);
printf("Task suspended for 1 second to let run the idle task.\n");
_mqx_get_idle_loop_count (&idle_loops);
loop1 = idle_loops.IDLE_LOOP1;
_time_delay (1000);
_mqx_get_idle_loop_count (&idle_loops);
printf ("Idle loops per second with idle sleep enabled: %d\n", idle_loops.IDLE_LOOP1 - loop1);
printf("Idle task sleep feature disabled.\n\n");
_lpm_idle_sleep_setup (FALSE);
/* Wait for button press */
printf ("Press button to move to next operation mode.\n");
_lwevent_wait_ticks (&app_event, SW_EVENT_MASK, FALSE, 0);
_lwevent_clear (&app_event, ALL_EVENTS_MASK);
printf("\nButton pressed. Moving to next operation mode.\n");
operation_mode = LPM_OPERATION_MODE_WAIT;
printf("\n******************************************************************************\n");
printf("************** Operation mode : %s **********************\n", get_operation_mode_name (operation_mode));
printf("******************************************************************************\n");
display_operation_mode_setting(operation_mode);
printf(
"Info: WAIT operation mode is mapped on VLPR power mode by default.\n"
" It requires 2 MHz core clock and bypassed pll.\n"
" Core continues the execution after entering the mode.\n"
" LED2 blinks slowly, LED1 toggles after the button press.\n");
/* The LPM_OPERATION_MODE_WAIT is mapped on LPM_CPU_POWER_MODE_VLPR by default,
this mode requires 2 MHz, bypassed PLL clock setting. Change clocks to appropriate mode */
printf("\nChanging frequency to 2 MHz.\n");
if (CM_ERR_OK != _lpm_set_clock_configuration(BSP_CLOCK_CONFIGURATION_2MHZ))
{
printf("Cannot change clock configuration");
_task_block();
}
/* Change the operation mode */
printf ("\nSetting operation mode to %s ... ", get_operation_mode_name (operation_mode));
printf ("%s\n", _lpm_set_operation_mode (LPM_OPERATION_MODE_WAIT) == 0 ? "OK" : "ERROR");
/* Wait for button press */
printf ("\nPress button to move to next operation mode.\n");
_lwevent_wait_ticks (&app_event, SW_EVENT_MASK, FALSE, 0);
_lwevent_clear (&app_event, ALL_EVENTS_MASK);
printf("\nButton pressed.\n");
/* Return to RUN mode */
printf ("\nSetting operation mode back to %s ... ", get_operation_mode_name (LPM_OPERATION_MODE_RUN));
printf ("%s\n", _lpm_set_operation_mode (LPM_OPERATION_MODE_RUN) == 0 ? "OK" : "ERROR");
/* Return default clock configuration */
printf("\nChanging frequency back to the default one.\n");
if (CM_ERR_OK != _lpm_set_clock_configuration(BSP_CLOCK_CONFIGURATION_DEFAULT))
{
printf("Cannot change clock configuration");
_task_block();
}
printf("\nMoving to next operation mode.\n");
operation_mode = LPM_OPERATION_MODE_SLEEP;
printf("\n******************************************************************************\n");
printf("************** Operation mode : %s *********************\n", get_operation_mode_name (operation_mode));
printf("******************************************************************************\n");
display_operation_mode_setting(operation_mode);
printf(
"Info: SLEEP operation mode is mapped on WAIT power mode by default.\n"
" The core is inactive in this mode, reacting only to interrupts.\n"
" The LPM_CPU_POWER_MODE_FLAG_SLEEP_ON_EXIT is set on Kinetis, therefore\n"
" core goes to sleep again after any isr finishes. The core will stay awake\n"
" after call to _lpm_wakeup_core() from timer wakeup or serial interrupt.\n"
" LED2 doesn't blink, LED1 toggles after the button press.\n");
/* Wake up in 10 seconds */
set_timer_wakeup ();
/* Change the operation mode */
printf ("\nSetting operation mode to %s ... ", get_operation_mode_name (operation_mode));
printf ("%s\n", _lpm_set_operation_mode (operation_mode) == 0 ? "OK" : "ERROR");
if (LWEVENT_WAIT_TIMEOUT == _lwevent_wait_ticks (&app_event, TIMER_EVENT_MASK, FALSE, 1))
{
printf("\nCore woke up by interrupt. Waiting for timer wakeup ... ");
_lwevent_wait_ticks (&app_event, TIMER_EVENT_MASK, FALSE, 0);
printf("OK\n");
}
else
{
printf("\nCore woke up by timer wakeup.\n");
}
_lwevent_clear (&app_event, ALL_EVENTS_MASK);
/* Wait for button press */
printf ("\nPress button to move to next operation mode.\n");
_lwevent_wait_ticks (&app_event, SW_EVENT_MASK, FALSE, 0);
_lwevent_clear (&app_event, ALL_EVENTS_MASK);
printf("\nButton pressed. Moving to next operation mode.\n");
operation_mode = LPM_OPERATION_MODE_STOP;
printf("\n******************************************************************************\n");
printf("************** Operation mode : %s **********************\n", get_operation_mode_name (operation_mode));
printf("******************************************************************************\n");
display_operation_mode_setting(operation_mode);
printf(
"Info: STOP operation mode is mapped to LLS power mode by default.\n"
" Core and most peripherals are inactive in this mode, reacting only to\n"
" specified wake up events. The events can be changed in BSP (init_lpm.c).\n"
" Serial line is turned off in this mode. The core will wake up from\n"
" timer wakeup interrupt.\n"
" LED2 doesn't blink, LED1 toggles after the button press.\n");
/* Wake up in 10 seconds */
set_timer_wakeup ();
/* Change the operation mode */
printf ("\nSetting operation mode to %s ... \n", get_operation_mode_name (operation_mode));
_lpm_set_operation_mode (operation_mode);
/**************************************************************************************************/
/* SCI HW MODULE IS DISABLED AT THIS POINT - SERIAL DRIVER MUST NOT BE USED UNTIL MODE IS CHANGED */
/**************************************************************************************************/
/* Return to RUN mode */
_lpm_set_operation_mode (LPM_OPERATION_MODE_RUN);
printf("\nCore is awake. Moved to next operation mode.\n");
#if MQX_ENABLE_HSRUN
/* Wait for button press */
printf ("Press button to move to next operation mode.\n");
_lwevent_wait_ticks (&app_event, SW_EVENT_MASK, FALSE, 0);
_lwevent_clear (&app_event, ALL_EVENTS_MASK);
printf("\nButton pressed. Moving to next operation mode.\n");
/* Change the operation mode */
printf ("\nSetting operation mode to %s ... ", get_operation_mode_name (operation_mode));
printf ("%s\n", _lpm_set_operation_mode (LPM_OPERATION_MODE_HSRUN) == 0 ? "OK" : "ERROR");
/* Change frequency to HSRUN mode . */
printf("\nChanging frequency to HSRUN mode.\n");
if (CM_ERR_OK != _lpm_set_clock_configuration(BSP_CLOCK_CONFIGURATION_3))
{
printf("Cannot change clock configuration");
_task_block();
}
#endif
}
}