/* 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 ------------------------------------------------------------------*/
#include "main.h"
#include "stdio.h"

#include "sni.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */

/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */

/* 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 ---------------------------------------------------------*/
UART_HandleTypeDef huart2;

/* USER CODE BEGIN PV */

/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_USART2_UART_Init(void);
/* USER CODE BEGIN PFP */
static int32_t java_thread_id;
int buttonIRQ(int button_index);
/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
  * @brief  The application entry point.
  * @retval int
  */

//---------------------------------------------------------------------------------
// EXTI Line9 External Interrupt ISR Handler CallBackFun
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
    if(GPIO_Pin == GPIO_PIN_9) // If The INT Source Is EXTI Line9 (A9 Pin)
    {
    HAL_GPIO_TogglePin(GPIOA, GPIO_PIN_8); // Toggle The Output (LED) Pin
    printf("Hello, World! printf function is working.\n");

    buttonIRQ(10);

    }

}
//---------------------------------------------------------------------------------


//---------------------------------------------------------------------------------
int _write(int file, char *ptr, int len) {

	HAL_UART_Transmit(&huart2,(uint8_t*)ptr,len,HAL_MAX_DELAY);

  char newline[] = "\r\n";
 HAL_UART_Transmit(&huart2,(uint8_t*)newline,2,HAL_MAX_DELAY);

	return len;

}
//---------------------------------------------------------------------------------

                    //********** MicroEJ Initialize **************

//-----------------------------------------------------------------
void javaWorldTask() { 
 int32_t err;
 int32_t exitCode;
 void* myVM;
 myVM = SNI_createVM();
 if (myVM == NULL) {
 printf("Failed to create the Java world\n");
 }
 else { 
 err = SNI_startVM(myVM, 0, NULL);
 if(err < 0) {
 printf("VM ends with error (%ld)\n", err);
 }
 else {
 exitCode = SNI_getExitCode(myVM);
 printf("Java exit code = %ld\n", exitCode);
 }
 SNI_destroyVM(myVM);
 }
}

//-----------------------------------------------------------------


int buttonIRQ(int button_index){
SNI_resumeJavaThreadWithArg(java_thread_id, (void*)button_index);

return 0;
}


jint waitButton_callback()
{
int button_index;
SNI_getCallbackArgs(NULL, (void*)&button_index);
return (jint)button_index; // Actual value returned to Java
}

 

jint Java_com_mycompany_Main_waitButton(){
java_thread_id = SNI_getCurrentJavaThreadID();
SNI_suspendCurrentJavaThreadWithCallback(0, (SNI_callback)waitButton_callback, NULL);
return SNI_IGNORED_RETURNED_VALUE; // Returned value not used
}


int main(void)
{

  /* USER CODE BEGIN 1 */

  /* USER CODE END 1 */

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

  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();

  /* USER CODE BEGIN Init */

  /* USER CODE END Init */

  /* Configure the system clock */
  SystemClock_Config();

  /* USER CODE BEGIN SysInit */

  /* USER CODE END SysInit */

  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  MX_USART2_UART_Init();
  /* USER CODE BEGIN 2 */

//--------------------------------------------------------------
                   /* Invoke MicroEJ Core Engine */ 
javaWorldTask();

//SNI_startVM(SNI_createVM(), 0, NULL);

//_____________________


//Java_com_mycompany_Main_waitButton();
//waitButton_callback();



//---------------------------------------------------------------
  


  /* USER CODE END 2 */

  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
  while (1)
  {
    /* USER CODE END WHILE */

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