/* USER CODE BEGIN Header */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2024 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can  be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "pish_stm32f411_sfr.h"
#include "pish_gpio_drv.h"
#include "pish_rcc_drv.h"
#include "pish_uart_drv.h"
#include "arm_irq.h"
#include <stdio.h>
#include "pish_types.h"
#include "soft_timer.h"
#include "pish_counter.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
enum {
	STATE_SLOW,
	STATE_MES,
	STATE_FAST,
	STATE_RESTART,
	//...
	STATES_TOTAL
} state;


/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

volatile uint8_t buttonPressed = 0;
void processSlowState(event_t event);

void processMesState(event_t event);

void processFastState(event_t event);

void processRestartState(event_t event);

void processUnknownState(event_t event);

void (*processSingleState)(event_t) = processSlowState;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/

/* USER CODE BEGIN PFP */
void delay (int ms);
void rx_callback(uint8_t data);
uint16_t getValue();
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
void rx_callback(uint8_t data)
{

	if ('1' == data)
	{
		PISH_GPIO_Write(GPIOA, 5, 1);
	}
	else if ('0' == data)
	{
		PISH_GPIO_Write(GPIOA, 5, 0);
	}
}

event_t getEvent()
{
	if (buttonPressed){
		buttonPressed = 0;
		return EVENT_BUTTON;
	}
	if (EVENT_NOTHING != STIMER_getEvent()){
		return EVENT_TIMER;
	}
	if (EVENT_NOTHING != COUNTER_getEvent())
	{
		return EVENT_COUNTER;
	}

	return EVENT_NOTHING;
}

void processSlowState(event_t event){
	switch (event)
	{
		  case EVENT_BUTTON:
			  STIMER_arm(500);
			  COUNTER_arm(3);
			  state = STATE_MES;
			  processSingleState = processMesState;
			  break;
		  case EVENT_TIMER:
			  uint16_t val = 0;
			  val = getValue();
			  printValue(val);
			  STIMER_arm(1000);
			  break;
		  default:
			  break;
	}
}

void processMesState(event_t event){
	  switch (event)
	  {
		  case EVENT_COUNTER:
			  STIMER_arm(100);
			  COUNTER_arm(100);
			  state = STATE_FAST;
			  processSingleState = processFastState;
			  break;
		  case EVENT_TIMER:
			  message(COUNTER_getValue());
			  STIMER_arm(500);
			  break;
		  default:
			  break;
	  }
}

void processFastState(event_t event){
	  switch (event)
	  {
		  case EVENT_COUNTER:
			  state = STATE_RESTART;
			  processSingleState = processRestartState;
			  break;
		  case EVENT_TIMER:
			  uint16_t val = 0;
			  val = getValue();
			  char buf[4] = {0,};
			  sprintf (buf,"%d ",COUNTER_getValue());
			  PISH_UART_WriteStr(USART2, buf);
			  printValue(val);
			  STIMER_arm(100);

			  break;
		  default:
			  break;
	  }
}

void processRestartState(event_t event){
	PISH_UART_WriteStr(USART2, "Restart \n\r");
	state = STATE_SLOW;
	processSingleState = processSlowState;
}

void processUnknownState(event_t event){
	PISH_UART_WriteStr(USART2, "UNKNOWN STATE \n\r");
	state = STATE_SLOW;
}

void (*processState[STATES_TOTAL])(event_t) = {
		processSlowState,
		processMesState,
		processFastState,
		processRestartState
};

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{

  /* USER CODE BEGIN 1 */
	PISH_Init();
  /* USER CODE END 1 */

  /* MCU Configuration--------------------------------------------------------*/


  /* USER CODE BEGIN Init */
  PISH_RCC_Init(PISH_CLOCK_SRC_PLL);

  PISH_UART_Init(USART2, 0);
  PISH_UART_SetCallback(rx_callback);
  PISH_GPIO_Init();

  uint32_t machine_ticks = getTicks();

  state = STATE_SLOW;
  uint8_t counter = 1;
  STIMER_arm(1000);
  /* USER CODE END 2 */
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
	  event_t event = getEvent();

	  //processSingleState(event);

	  processState[state](event);
//	  switch (state)
//	  {
//		  case STATE_SLOW:
//			  processSlowState(event);
//			  break;
//		  case STATE_MES:
//			  processMesState(event);
//			  break;
//		  case STATE_FAST:
//			  processFastState(event);
//			  break;
//		  case STATE_RESTART:
//			  processRestartState(event);
//			  break;
//		  default:
//			  processUnknownState(event);
//			  break;
//	  }


//	  switch (state)
//	  {
//		  case STATE_SLOW:
//			  if(ticks - machine_ticks > 1000)
//			  {
//				  uint16_t val = 0;
//				  val = getValue();
//				  printValue(val);
//				  machine_ticks = ticks;
//			  }
//
//			  if(buttonPressed)
//			  {
//				  state = STATE_MES;
//				  buttonPressed = 0;
//				  machine_ticks = ticks;
//			  }
//
//			  break;
//		  case STATE_MES:
//			  if(ticks - machine_ticks > 500)
//			  {
//				  message(counter++);
//				  machine_ticks = ticks;
//			  }
//			  if (counter > 3)
//			  {
//				  counter = 0;
//				  machine_ticks = ticks;
//				  state = STATE_FAST;
//			  }
//			  break;
//		  case STATE_FAST:
//			  if(ticks - machine_ticks > 100)
//			  {
//				  uint16_t val = 0;
//				  val = getValue();
//				  printValue(val);
//				  machine_ticks = ticks;
//				  counter++;
//			  }
//			  if (counter > 50)
//			  {
//				  counter = 0;
//				  machine_ticks = ticks;
//				  state = STATE_RESTART;
//			  }
//			  break;
//		  case STATE_RESTART:
//			  PISH_UART_WriteStr(USART2, "Restart \n\r");
//			  state = STATE_SLOW;
//			  break;
//		  default:
//			  PISH_UART_WriteStr(USART2, "UNKNOWN STATE \n\r");
//			  state = STATE_SLOW;
//			  break;
//	  }


//	  while (!buttonPressed)
//	  {
//		  uint16_t val = 0;
//		  val = getValue();
//		  printValue(val);
//		  delay(1000);
//	  }
//	  buttonPressed = 0;
//
//	  message(1);
//	  printValue(getValue());
//	  delay(500);
//	  message(2);
//	  printValue(getValue());
//	  delay(500);
//	  message(3);
//	  printValue(getValue());
//	  delay(500);
//
//	  for (int counter = 0; counter <100; counter++)
//	  {
//		  uint16_t val = 0;
//		  val = getValue();
//		  printValue(val);
//		  delay(100);
//	  }
//	  PISH_UART_WriteStr(USART2, "Restart \n\r");

    /* USER CODE END WHILE */

    /* USER CODE BEGIN 3 */
  }
  /* USER CODE END 3 */
}

/* USER CODE BEGIN 4 */
void delay (int ms)
{
	uint32_t currTicks = getTicks();

	while(getTicks() - currTicks < ms)
	{

	}
}

uint16_t getValue()
{
    return 123;
}

void message(uint8_t val)
{
	char buf[30];
	uint16_t len = sprintf(buf, "Button pressed: %d\n\r", val);
	//PISH_UART_WriteStr(USART2, );
	PISH_UART_WriteStr(USART2, buf);
}

void printValue(uint16_t val)
{
	char buf[20];
	uint16_t len = sprintf(buf, "Value: %d\n\r", val);
	//PISH_UART_WriteStr(USART2, );
	PISH_UART_WriteStr(USART2, buf);
}



void EXTI15_10_IRQHandler()
{
	if(EXTI->PR.B.PR13)
	{
		EXTI->PR.B.PR13 = 1;
		buttonPressed = 1;
	}
}
/* USER CODE END 4 */

/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}

#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 CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */