/**
  **************************************************************************
  * @file     main.c
  * @version  v2.0.3
  * @date     2022-02-11
  * @brief    main program
  **************************************************************************
  *                       Copyright notice & Disclaimer
  *
  * The software Board Support Package (BSP) that is made available to 
  * download from Artery official website is the copyrighted work of Artery. 
  * Artery authorizes customers to use, copy, and distribute the BSP 
  * software and its related documentation for the purpose of design and 
  * development in conjunction with Artery microcontrollers. Use of the 
  * software is governed by this copyright notice and the following disclaimer.
  *
  * THIS SOFTWARE IS PROVIDED ON "AS IS" BASIS WITHOUT WARRANTIES,
  * GUARANTEES OR REPRESENTATIONS OF ANY KIND. ARTERY EXPRESSLY DISCLAIMS,
  * TO THE FULLEST EXTENT PERMITTED BY LAW, ALL EXPRESS, IMPLIED OR
  * STATUTORY OR OTHER WARRANTIES, GUARANTEES OR REPRESENTATIONS,
  * INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
  *
  **************************************************************************
  */

#include "at32f413_board.h"
#include "at32f413_clock.h"

/** @addtogroup AT32F413_periph_examples
  * @{
  */
  
/** @addtogroup 413_TMR_pwm_input TMR_pwm_input
  * @{
  */

tmr_input_config_type tmr_ic_init_structure;

__IO uint16_t duty_cycle = 0;
__IO uint32_t frequency = 0;

void crm_configuration(void);
void gpio_configuration(void);

/**
  * @brief  configure the tmr3 pins.
  * @param  none
  * @retval none
  */
void gpio_configuration(void)
{
  gpio_init_type gpio_init_struct;

  gpio_default_para_init(&gpio_init_struct);

  gpio_init_struct.gpio_pins = GPIO_PINS_7;
  gpio_init_struct.gpio_out_type = GPIO_OUTPUT_PUSH_PULL;
  gpio_init_struct.gpio_pull = GPIO_PULL_NONE;  
  gpio_init_struct.gpio_mode = GPIO_MODE_INPUT;
  gpio_init_struct.gpio_drive_strength = GPIO_DRIVE_STRENGTH_STRONGER;
  gpio_init(GPIOA, &gpio_init_struct);
}

/**
  * @brief  configures the different peripheral clocks.
  * @param  none
  * @retval none
  */
void crm_configuration(void)
{
  /* tmr3 clock enable */
  crm_periph_clock_enable(CRM_TMR3_PERIPH_CLOCK, TRUE);

  /* gpioa clock enable */
  crm_periph_clock_enable(CRM_GPIOA_PERIPH_CLOCK, TRUE);
}

/**
  * @brief  main function.
  * @param  none
  * @retval none
  */
int main(void)
{
  system_clock_config();

  /* peripheral clocks configuration */
  crm_configuration();

  /* nvic configuration */
  nvic_priority_group_config(NVIC_PRIORITY_GROUP_4);
  nvic_irq_enable(TMR3_GLOBAL_IRQn, 0, 0);

  /* gpio configuration */
  gpio_configuration();

  uart_print_init(115200);

  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_pwm_input_config(TMR3, &tmr_ic_init_structure, TMR_CHANNEL_INPUT_DIV_1);

  /* select the tmr3 input trigger: c2df2 */
  tmr_trigger_input_select(TMR3, TMR_SUB_INPUT_SEL_C2DF2);

  /* select the sub mode: reset mode */
  tmr_sub_mode_select(TMR3, TMR_SUB_RESET_MODE);

  /* enable the sub sync mode */
  tmr_sub_sync_mode_set(TMR3, TRUE);

  /* tmr enable counter */
  tmr_counter_enable(TMR3, TRUE);

  /* enable the c2 interrupt request */
  tmr_interrupt_enable(TMR3, TMR_C2_INT, TRUE);

  while(1)
  {
    printf("Frequency = %dHZ,Dutycycle = %d%%\r\n", frequency, duty_cycle);
  }
}

/**
  * @}
  */ 

/**
  * @}
  */ 
