void nrf_drv_timer_uninit(nrf_drv_timer_t const * const p_instance)
{
uint32_t i;
nrf_drv_common_irq_disable(p_instance->irq);
m_timer_event_handlers[p_instance->instance_id] = NULL;
nrf_drv_timer_disable(p_instance);
//lint -save -e655
nrf_timer_shorts_clear(p_instance->p_reg, NRF_TIMER_SHORTS_COMPARE0_STOP_MASK |
NRF_TIMER_SHORTS_COMPARE1_STOP_MASK |
NRF_TIMER_SHORTS_COMPARE2_STOP_MASK |
NRF_TIMER_SHORTS_COMPARE3_STOP_MASK |
NRF_TIMER_SHORTS_COMPARE0_CLEAR_MASK |
NRF_TIMER_SHORTS_COMPARE1_CLEAR_MASK |
NRF_TIMER_SHORTS_COMPARE2_CLEAR_MASK |
NRF_TIMER_SHORTS_COMPARE3_CLEAR_MASK);
//lint -restore
for(i=0; i<TIMER_CHANNEL_NUMBER; i++)
{
nrf_timer_int_disable(p_instance->p_reg, NRF_TIMER_INT_COMPARE0_MASK << i);
}
m_cb[p_instance->instance_id].state = NRF_DRV_STATE_UNINITIALIZED;
}
void us_ticker_free(void)
{
nrf_timer_task_trigger(NRF_TIMER1, NRF_TIMER_TASK_STOP);
nrf_timer_int_disable(NRF_TIMER1, nrf_timer_compare_int_get(NRF_TIMER_CC_CHANNEL0));
us_ticker_initialized = false;
}
void nrf_drv_timer_compare_int_disable(nrf_drv_timer_t const * const p_instance,
uint32_t channel)
{
ASSERT(m_cb[p_instance->instance_id].state != NRF_DRV_STATE_UNINITIALIZED);
ASSERT(channel < p_instance->cc_channel_count);
nrf_timer_int_disable(p_instance->p_reg,
nrf_timer_compare_int_get(channel));
}
void us_ticker_init(void)
{
if (us_ticker_initialized) {
nrf_timer_event_clear(NRF_TIMER1, NRF_TIMER_EVENT_COMPARE0);
nrf_timer_int_disable(NRF_TIMER1, nrf_timer_compare_int_get(NRF_TIMER_CC_CHANNEL0));
return;
}
nrf_timer_task_trigger(NRF_TIMER1, NRF_TIMER_TASK_STOP);
nrf_timer_int_disable(NRF_TIMER1, nrf_timer_compare_int_get(NRF_TIMER_CC_CHANNEL0));
/* Configure timer as follows:
* - timer mode,
* - timer width 16 bits for NRF51 and 32 bits for NRF52,
* - timer freq 1 MHz.
*/
nrf_timer_mode_set(NRF_TIMER1, NRF_TIMER_MODE_TIMER);
nrf_timer_frequency_set(NRF_TIMER1, NRF_TIMER_FREQ_1MHz);
#ifdef NRF52
nrf_timer_bit_width_set(NRF_TIMER1, NRF_TIMER_BIT_WIDTH_32);
#else
nrf_timer_bit_width_set(NRF_TIMER1, NRF_TIMER_BIT_WIDTH_16);
#endif
nrf_timer_cc_write(NRF_TIMER1, NRF_TIMER_CC_CHANNEL0, 0);
nrf_timer_event_clear(NRF_TIMER1, NRF_TIMER_EVENT_COMPARE0);
NVIC_SetVector(TIMER1_IRQn, (uint32_t)us_ticker_irq_handler);
nrf_drv_common_irq_enable(TIMER1_IRQn, APP_IRQ_PRIORITY_HIGH);
nrf_timer_task_trigger(NRF_TIMER1, NRF_TIMER_TASK_START);
/* Bug fix. First value can't be trusted. */
nrf_timer_task_trigger(NRF_TIMER1, NRF_TIMER_TASK_CAPTURE1);
us_ticker_initialized = true;
}
void nrf_drv_timer_uninit(nrf_drv_timer_t const * const p_instance)
{
nrf_drv_common_irq_disable(nrf_drv_get_IRQn(p_instance->p_reg));
#define DISABLE_ALL UINT32_MAX
nrf_timer_shorts_disable(p_instance->p_reg, DISABLE_ALL);
nrf_timer_int_disable(p_instance->p_reg, DISABLE_ALL);
#undef DISABLE_ALL
nrf_drv_timer_disable(p_instance);
m_cb[p_instance->instance_id].state = NRF_DRV_STATE_UNINITIALIZED;
}
void nrf_drv_timer_uninit(nrf_drv_timer_t const * const p_instance)
{
nrf_drv_common_irq_disable(nrf_drv_get_IRQn(p_instance->p_reg));
#define DISABLE_ALL UINT32_MAX
nrf_timer_shorts_disable(p_instance->p_reg, DISABLE_ALL);
nrf_timer_int_disable(p_instance->p_reg, DISABLE_ALL);
#undef DISABLE_ALL
if (m_cb[p_instance->instance_id].state == NRF_DRV_STATE_POWERED_ON)
{
nrf_drv_timer_disable(p_instance);
}
m_cb[p_instance->instance_id].state = NRF_DRV_STATE_UNINITIALIZED;
NRF_LOG_INFO("Uninitialized instance: %d.\r\n", p_instance->instance_id);
}
void nrf_drv_timer_compare(nrf_drv_timer_t const * const p_instance,
nrf_timer_cc_channel_t cc_channel,
uint32_t cc_value,
bool enable_int)
{
nrf_timer_int_mask_t timer_int = nrf_timer_compare_int_get(cc_channel);
if (enable_int)
{
nrf_timer_int_enable(p_instance->p_reg, timer_int);
}
else
{
nrf_timer_int_disable(p_instance->p_reg, timer_int);
}
nrf_timer_cc_write(p_instance->p_reg, cc_channel, cc_value);
}
void nrf_drv_timer_compare(nrf_drv_timer_t const * const p_instance,
nrf_timer_cc_channel_t cc_channel,
uint32_t cc_value,
bool enable_int)
{
nrf_timer_int_mask_t timer_int = nrf_timer_compare_int_get(cc_channel);
if (enable_int)
{
nrf_timer_int_enable(p_instance->p_reg, timer_int);
}
else
{
nrf_timer_int_disable(p_instance->p_reg, timer_int);
}
nrf_timer_cc_write(p_instance->p_reg, cc_channel, cc_value);
NRF_LOG_INFO("Timer id: %d, capture value set: %d, channel: %d.\r\n", p_instance->instance_id, cc_value, cc_channel);
}
void nrf_drv_timer_compare(nrf_drv_timer_t const * const p_instance,
nrf_timer_cc_channel_t cc_channel,
uint32_t cc_value,
bool enable)
{
nrf_timer_int_mask_t timer_int;
timer_int = (nrf_timer_int_mask_t)((uint32_t)NRF_TIMER_INT_COMPARE0_MASK << cc_channel);
if (enable == true)
{
/*lint -save -e644*/
nrf_timer_int_enable(p_instance->p_reg, timer_int);
/*lint -restore*/
}
else
{
nrf_timer_int_disable(p_instance->p_reg, timer_int);
}
nrf_timer_cc_write(p_instance->p_reg, cc_channel, cc_value);
}
void us_ticker_disable_interrupt(void)
{
nrf_timer_int_disable(NRF_TIMER1, nrf_timer_compare_int_get(NRF_TIMER_CC_CHANNEL0));
}
