TMR — 单脉冲模式

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#include "at32f403a_407_board.h"
#include "at32f403a_407_clock.h"

int main(void)
{
  system_clock_config();

  /* peripheral clocks configuration */
  crm_configuration();

  /* gpio configuration */
  gpio_configuration();

  /* compute the prescaler value */
  prescaler_value = (uint16_t)(system_core_clock / 24000000) - 1;

  /* tmr base configuration */
  tmr_base_init(TMR4, 65535, prescaler_value);
  tmr_cnt_dir_set(TMR4, TMR_COUNT_UP);
  tmr_clock_source_div_set(TMR4, TMR_CLOCK_DIV1);

  /* output compare toggle mode configuration: channel1 */
  tmr_output_default_para_init(&tmr_oc_init_structure);
  tmr_oc_init_structure.oc_mode = TMR_OUTPUT_CONTROL_PWM_MODE_B;
  tmr_oc_init_structure.oc_idle_state = FALSE;
  tmr_oc_init_structure.oc_polarity = TMR_OUTPUT_ACTIVE_HIGH;
  tmr_oc_init_structure.oc_output_state = TRUE;
  tmr_output_channel_config(TMR4, TMR_SELECT_CHANNEL_1, &tmr_oc_init_structure);
  tmr_channel_value_set(TMR4, TMR_SELECT_CHANNEL_1, 16383);

  tmr_input_default_para_init(&tmr_ic_init_structure);
  tmr_ic_init_structure.input_filter_value = 0;
  tmr_ic_init_structure.input_channel_select = TMR_SELECT_CHANNEL_2;
  tmr_ic_init_structure.input_mapped_select = TMR_CC_CHANNEL_MAPPED_DIRECT;
  tmr_ic_init_structure.input_polarity_select = TMR_INPUT_RISING_EDGE;
  tmr_input_channel_init(TMR4, &tmr_ic_init_structure, TMR_CHANNEL_INPUT_DIV_1);

  /* one cycle mode selection */
  tmr_one_cycle_mode_enable(TMR4, TRUE);

  /* input trigger selection */
  tmr_trigger_input_select(TMR4, TMR_SUB_INPUT_SEL_C2DF2);

  /* slave mode selection: trigger mode */
  tmr_sub_mode_select(TMR4, TMR_SUB_TRIGGER_MODE);

  while(1)
  {
  }
}