Is there an code example for using a timer in count mode with compare?

Question

Hi i am trying to configure a timer to work in count mode and when it hits a certain number ( for example 100) to activeta an interrupt, clear count and start again. 
 Best regards.

Petar02 · Accepted Answer

ISR_DIRECT_DECLARE(trig_cnt_irq_handler) { // Half way point if(SPI_TRIG_COUNTER->EVENTS_COMPARE[0]) { SPI_TRIG_COUNTER->EVENTS_COMPARE[0] = 0; m_item_num = LIST_ITEMS / 2; m_item_index = 0; k_sem_give(&m_sem_samples_available); } // End of buffer (not including margin) if(SPI_TRIG_COUNTER->EVENTS_COMPARE[1]) { SPI_TRIG_COUNTER->EVENTS_COMPARE[1] = 0; // If there is a risk that this interrupt gets delayed we need to handle the case where more items have been sampled than expected // trigger a capture on the counter to check how far the count has reached // TODO: Possibly we would also need to check the state of the timer to check if is just about to trigger another sample, which could lead to a race condition SPI_TRIG_COUNTER->TASKS_CAPTURE[3] = 1; m_item_num = SPI_TRIG_COUNTER->CC[3] - (LIST_ITEMS / 2); m_item_index = LIST_ITEMS / 2; SPI_MASTER->TXD.PTR = (uint32_t)m_tx_buffer[0]; SPI_MASTER->RXD.PTR = (uint32_t)m_rx_buffer[0]; SPI_TRIG_COUNTER->TASKS_CLEAR = 1; k_sem_give(&m_sem_samples_available); } ISR_DIRECT_PM(); return 1; } static void trig_counter_init(void) { SPI_TRIG_COUNTER->MODE = TIMER_MODE_MODE_Counter << TIMER_MODE_MODE_Pos; SPI_TRIG_COUNTER->CC[0] = LIST_ITEMS / 2; SPI_TRIG_COUNTER->CC[1] = LIST_ITEMS; SPI_TRIG_COUNTER->INTENSET = TIMER_INTENSET_COMPARE0_Msk | TIMER_INTENSET_COMPARE1_Msk; SPI_TRIG_COUNTER->TASKS_CLEAR = 1; SPI_TRIG_COUNTER->TASKS_START = 1; IRQ_DIRECT_CONNECT(TIMER2_IRQn, IRQ_PRIO_LOWEST, trig_cnt_irq_handler, 0); irq_enable(TIMER2_IRQn); LOG_INF("timer konfigurisan"); } Here it is.

Is there an code example for using a timer in count mode with compare?

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