/**
  ******************************************************************************
  * @file    main.c
  * @author  MCU Application Team
  * @brief   Main program body
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2023 Puya Semiconductor Co.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by Puya under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; Copyright (c) 2016 STMicroelectronics.
  * All rights reserved.</center></h2>
  *
  * This software component is licensed by ST under BSD 3-Clause license,
  * the "License"; You may not use this file except in compliance with the
  * License. You may obtain a copy of the License at:
  *                        opensource.org/licenses/BSD-3-Clause
  *
  ******************************************************************************
  */
  
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "py32m030xx_ll_Start_Kit.h"

/* Private define ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
const uint8_t dispArr[] = {LL_LED_DISP_0, LL_LED_DISP_1, LL_LED_DISP_2, LL_LED_DISP_3, LL_LED_DISP_4, \
                           LL_LED_DISP_5, LL_LED_DISP_6, LL_LED_DISP_7, LL_LED_DISP_8, LL_LED_DISP_9
                          };
uint8_t dispNum = 0;

/* Private user code ---------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
static void APP_SystemClockConfig(void);
static void APP_ConfigLed(void);

/**
  * @brief  Main program.
  * @retval int
  */
int main(void)
{
  /* Configure system clock */
  APP_SystemClockConfig();
  
  /* LED Segmented Display Configuration */
  APP_ConfigLed();

  while (1)
  {
    /* Switch to the next display value index every 1 second */
    dispNum++;
    if (dispNum == 10)
    {
      dispNum = 0;
    }
    LL_mDelay(1000);
  }
}

/**
  * @brief  System clock configuration function
  * @param  None
  * @retval None
  */
static void APP_SystemClockConfig(void)
{
  /* Enable HSI */
  LL_RCC_HSI_Enable();
  while(LL_RCC_HSI_IsReady() != 1)
  {
  }

  /* Set AHB prescaler */
  LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);

  /* Configure HSISYS as system clock source */
  LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_HSISYS);
  while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_HSISYS)
  {
  }

  /* Set APB1 prescaler */
  LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
  LL_Init1msTick(8000000);

  /* Update system clock global variable SystemCoreClock (can also be updated by calling SystemCoreClockUpdate function) */
  LL_SetSystemCoreClock(8000000);
}

/**
  * @brief  This function is executed in case of error occurrence.
  * @param  None
  * @retval None
  */
void APP_ErrorHandler(void)
{
  /* Infinite loop */
  while(1)
  {
  }
}

/**
  * @brief  Configure LED segmented display
  * @param  None
  * @retval None
  */
static void APP_ConfigLed(void)
{
  /* Enable clock */
  LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_LED);
  LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA);
  LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOB);
  
  LL_GPIO_InitTypeDef GPIO_InitStruct = {0};
  /* Configure PB3, PB4, PB5 as com1, com2, com3 */
  GPIO_InitStruct.Pin = LL_GPIO_PIN_3 | LL_GPIO_PIN_4 | LL_GPIO_PIN_5;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
  GPIO_InitStruct.Alternate = LL_GPIO_AF_6;
  LL_GPIO_Init(GPIOB, &GPIO_InitStruct);

  /* Configure PA15 as com0 */
  GPIO_InitStruct.Pin = LL_GPIO_PIN_15;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
  GPIO_InitStruct.Alternate = LL_GPIO_AF_6;
  LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
  
  /* Configure PA0, PA1, PA2, PA3, PA4, PA5, PA6 as SEG B C D E F G DP */
  GPIO_InitStruct.Pin = LL_GPIO_PIN_0 | LL_GPIO_PIN_1 | LL_GPIO_PIN_2 | LL_GPIO_PIN_3 |\
                        LL_GPIO_PIN_4 | LL_GPIO_PIN_5 | LL_GPIO_PIN_6;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
  GPIO_InitStruct.Alternate = LL_GPIO_AF_3;
  LL_GPIO_Init(GPIOA, &GPIO_InitStruct);
  
  /* Configure PB8 as SEG A */
  GPIO_InitStruct.Pin = LL_GPIO_PIN_8;
  GPIO_InitStruct.Mode = LL_GPIO_MODE_ALTERNATE;
  GPIO_InitStruct.Speed = LL_GPIO_SPEED_FREQ_VERY_HIGH;
  GPIO_InitStruct.OutputType = LL_GPIO_OUTPUT_PUSHPULL;
  GPIO_InitStruct.Pull = LL_GPIO_PULL_UP;
  GPIO_InitStruct.Alternate = LL_GPIO_AF_3;
  LL_GPIO_Init(GPIOB, &GPIO_InitStruct);
  
  /* Enable LED interrupt */
  NVIC_SetPriority(LED_IRQn, 0);
  NVIC_EnableIRQ(LED_IRQn);
  LL_LED_EnableIT(LED);

  /* Set LED COM drive capability */
  LL_LED_SetComDrive(LED, LL_LED_COMDRIVE_LOW);

  /* Set number of COM pins */
  LL_LED_SetComNum(LED, LL_LED_COMSELECT_4COM);

  /* Set LED prescaler value */
  LL_LED_SetPrescaler(LED, 9);

  /* Set LED light and dead time */
  LL_LED_SetLightAndDeadTime(LED, 0xF0, 0x10);
  
  /* Enable LED */
  LL_LED_Enable(LED);
}

/**
  * @brief  Callback function for LED segmented display lighting completion
  * @param  None
  * @retval None
  */
void APP_LedLightCpltCallback(void)
{
  static uint32_t oldValue = 0xFF;

  if (oldValue != dispNum)
  {
    oldValue = dispNum;
    LL_LED_SetDisplayValue(LED, LL_LED_COM0, dispArr[(dispNum) % 10]);
    LL_LED_SetDisplayValue(LED, LL_LED_COM1, dispArr[(dispNum + 1) % 10]);
    LL_LED_SetDisplayValue(LED, LL_LED_COM2, dispArr[(dispNum + 2) % 10]);
    LL_LED_SetDisplayValue(LED, LL_LED_COM3, dispArr[(dispNum + 3) % 10]);
  }
}

#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* User can add his own implementation to report the file name and line number,
     for example: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* Infinite loop */
  while (1)
  {
  }
}
#endif /* USE_FULL_ASSERT */

/************************ (C) COPYRIGHT Puya *****END OF FILE******************/
