uint32_t app_simple_timer_start(app_simple_timer_mode_t mode,
app_simple_timer_timeout_handler_t timeout_handler,
uint16_t timeout_ticks,
void * p_context)
{
uint32_t err_code = NRF_SUCCESS;
nrf_timer_short_mask_t timer_short;
VERIFY_PARAM_NOT_NULL(timeout_handler);
if (APP_SIMPLE_TIMER_MODE_REPEATED == mode)
{
timer_short = NRF_TIMER_SHORT_COMPARE0_CLEAR_MASK;
}
else if (APP_SIMPLE_TIMER_MODE_SINGLE_SHOT == mode)
{
timer_short = NRF_TIMER_SHORT_COMPARE0_STOP_MASK;
}
else
{
return NRF_ERROR_INVALID_PARAM;
}
if (SIMPLE_TIMER_STATE_IDLE == m_simple_timer_state)
{
return NRF_ERROR_INVALID_STATE;
}
if (SIMPLE_TIMER_STATE_STARTED == m_simple_timer_state)
{
err_code = app_simple_timer_stop();
APP_ERROR_CHECK(err_code);
}
if (SIMPLE_TIMER_STATE_STOPPED == m_simple_timer_state)
{
nrf_drv_timer_clear(&SIMPLE_TIMER);
}
m_mode = mode;
m_timeout_handler = timeout_handler;
mp_timeout_handler_context = p_context;
nrf_drv_timer_extended_compare(
&SIMPLE_TIMER, NRF_TIMER_CC_CHANNEL0, (uint32_t)timeout_ticks, timer_short, true);
if (m_simple_timer_state == SIMPLE_TIMER_STATE_STOPPED)
{
nrf_drv_timer_resume(&SIMPLE_TIMER);
}
else
{
nrf_drv_timer_enable(&SIMPLE_TIMER);
}
m_simple_timer_state = SIMPLE_TIMER_STATE_STARTED;
return NRF_SUCCESS;
}
void timeout_handler(void * p_context)
{
switch (m_state)
{
uint32_t err_code;
case APP_STATE_SINGLE_SHOT:
if (--m_state_transit_counter != 0)
{
if (--m_toggle_led_counter == 0)
{
m_toggle_led_counter = TOGGLE_LED_COUNTER;
LEDS_INVERT(BSP_LED_0_MASK);
}
err_code = app_simple_timer_start(APP_SIMPLE_TIMER_MODE_SINGLE_SHOT,
timeout_handler,
TIMEOUT_VALUE,
NULL);
APP_ERROR_CHECK(err_code);
}
else
{
state_machine_state_change(APP_STATE_REPEATED);
}
break;
case APP_STATE_REPEATED:
if (--m_state_transit_counter != 0)
{
if (--m_toggle_led_counter == 0)
{
m_toggle_led_counter = TOGGLE_LED_COUNTER;
LEDS_INVERT(BSP_LED_1_MASK);
}
}
else
{
LEDS_ON(BSP_LED_0_MASK | BSP_LED_1_MASK);
err_code = app_simple_timer_stop();
APP_ERROR_CHECK(err_code);
nrf_delay_ms(GENERIC_DELAY_TIME);
state_machine_state_change(APP_STATE_SINGLE_SHOT);
}
break;
default:
APP_ERROR_HANDLER(m_state);
break;
}
}
