Hello, I need help finishing my code $($stm$32$ controller $=,$ c language$).$ For the button inputs I am now using interrupts now and not sure if I use callback functions or how to finish the code, Here is what the code is whats supposed to happen in the code. Button $0$ Check $($Simple On$/$Off$)$:

The code reads the state of a button $($Button $0).$

If the button is pressed $($logic $0),$ an LED is turned on$.$

If not, the LED is turned off.

Button $1$ Check $($Toggle on Falling Edge$)$:

The state of the button is checked.

If pressed, the program toggles an LED based on the button press $($changes from high to low$).$

It keeps the LED state until the button is released.

Button $2$ Check $($Toggle on Rising Edge$)$:

Similar to Button $1$ but it toggles the LED when the button changes from low to high.

Button $3$ Check $($Double Click Toggle$)$:

This part implements a simple double$-$click detection mechanism.

The code increments a counter each time the button is pressed.

If the button is pressed twice quickly, the LED toggles its state

AND MY CODE BELOW:

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$\_$USART$2\_$UART$\_$Init$()$;

$/*$ USER CODE BEGIN $2*/$

$/*$ USER CODE END $2*/$

$/*$ Infinite loop $*/$

$/*$ USER CODE BEGIN WHILE $*/$

while $(1)$

$\{$

$/*$ USER CODE END WHILE $*/$

$/*$ USER CODE BEGIN $3*/$

$\}$

$/*$ USER CODE END $3*/$

$\}$

$/**$

$*$ @brief System Clock Configuration

$*$ @retval None

$*/$

void SystemClock$\_$Config$($void$)$

$\{$

RCC$\_$OscInitTypeDef RCC$\_$OscInitStruct $=\{0\}$;

RCC$\_$ClkInitTypeDef RCC$\_$ClkInitStruct $=\{0\}$;

$/**$ Configure the main internal regulator output voltage

$*/$

$\_\_$HAL$\_$RCC$\_$PWR$\_$CLK$\_$ENABLE$()$;

$\_\_$HAL$\_$PWR$\_$VOLTAGESCALING$\_$CONFIG$($PWR$\_$REGULATOR$\_$VOLTAGE$\_$SCALE$3)$;

$/**$ Initializes the RCC Oscillators according to the specified parameters

$*$ in the RCC$\_$OscInitTypeDef structure.

$*/$

RCC$\_$OscInitStruct.OscillatorType $=$ RCC$\_$OSCILLATORTYPE$\_$HSI;

RCC$\_$OscInitStruct.HSIState $=$ RCC$\_$HSI$\_$ON;

RCC$\_$OscInitStruct.HSICalibrationValue $=$ RCC$\_$HSICALIBRATION$\_$DEFAULT;

RCC$\_$OscInitStruct.PLL$.$PLLState $=$ RCC$\_$PLL$\_$ON;

RCC$\_$OscInitStruct.PLL$.$PLLSource $=$ RCC$\_$PLLSOURCE$\_$HSI;

RCC$\_$OscInitStruct.PLL$.$PLLM $=16$;

RCC$\_$OscInitStruct.PLL$.$PLLN $=336$;

RCC$\_$OscInitStruct.PLL$.$PLLP $=$ RCC$\_$PLLP$\_$DIV$4$;

RCC$\_$OscInitStruct.PLL$.$PLLQ $=2$;

RCC$\_$OscInitStruct.PLL$.$PLLR $=2$;

if $($HAL$\_$RCC$\_$OscConfig$($&RCC$\_$OscInitStruct$)!=$ HAL$\_$OK$)$

$\{$

Error$\_$Handler$()$;

$\}$

$/**$ Initializes the CPU, AHB and APB buses clocks

$*/$

RCC$\_$ClkInitStruct.ClockType $=$ RCC$\_$CLOCKTYPE$\_$HCLK$|$RCC$\_$CLOCKTYPE$\_$SYSCLK

$|$RCC$\_$CLOCKTYPE$\_$PCLK$1|$RCC$\_$CLOCKTYPE$\_$PCLK$2$;

RCC$\_$ClkInitStruct.SYSCLKSource $=$ RCC$\_$SYSCLKSOURCE$\_$PLLCLK;

RCC$\_$ClkInitStruct.AHBCLKDivider $=$ RCC$\_$SYSCLK$\_$DIV$1$;

RCC$\_$ClkInitStruct.APB$1$CLKDivider $=$ RCC$\_$HCLK$\_$DIV$2$;

RCC$\_$ClkInitStruct.APB$2$CLKDivider $=$ RCC$\_$HCLK$\_$DIV$1$;

if $($HAL$\_$RCC$\_$ClockConfig$($&RCC$\_$ClkInitStruct, FLASH$\_$LATENCY$\_2)!=$ HAL$\_$OK$)$

$\{$

Error$\_$Handler$()$;

$\}$

$\}$

$/**$

$*$ @brief USART$2$ Initialization Function

$*$ @param None

$*$ @retval None

$*/$

static void MX$\_$USART$2\_$UART$\_$Init$($void$)$

$\{$

$/*$ USER CODE BEGIN USART$2\_$Init $0*/$

$/*$ USER CODE END USART$2\_$Init $0*/$

$/*$ USER CODE BEGIN USART$2\_$Init $1*/$

$/*$ USER CODE END USART$2\_$Init $1*/$

huart$2.$Instance $=$ USART$2$;

huart$2.$Init.BaudRate $=115200$;

huart$2.$Init.WordLength $=$ UART$\_$WORDLENGTH$\_8$B;

huart$2.$Init.StopBits $=$ UART$\_$STOPBITS$\_1$;

huart$2.$Init.Parity $=$ UART$\_$PARITY$\_$NONE;

huart$2.$Init.Mode $=$ UART$\_$MODE$\_$TX$\_$RX;

huart$2.$Init.HwFlowCtl $=$ UART$\_$HWCONTROL$\_$NONE;

huart$2.$Init.OverSampling $=$ UART$\_$OVERSAMPLING$\_16$;

if $($HAL$\_$UART$\_$Init$($&huart$2)!=$ HAL$\_$OK$)$

$\{$

Error$\_$Handler$()$;

$\}$

$/*$ USER CODE BEGIN USART$2\_$Init $2*/$

$/*$ USER CODE END USART$2\_$Init $2*/$

$\}$

$/**$

$*$ @brief GPIO Initialization Function

$*$ @param None

$*$ @retval None

$*/$

static void MX$\_$GPIO$\_$Init$($void$)$

$\{$

GPIO$\_$InitTypeDef GPIO$\_$InitStruct $=\{0\}$;

$/*$ USER CODE BEGIN MX$\_$GPIO$\_$Init$\_1*/$

$/*$ USER CODE END MX$\_$GPIO$\_$Init$\_1*/$

$/*$ GPIO Ports Clock Enable $*/$

$\_\_$HAL$\_$RCC$\_$GPIOC$\_$CLK$\_$ENABLE$()$;

$\_\_$HAL$\_$RCC$\_$GPIOH$\_$CLK$\_$ENABLE$()$;

$\_\_$HAL$\_$RCC$\_$GPIOA$\_$CLK$\_$ENABLE$()$;

$\_\_$HAL$\_$RCC$\_$GPIOB$\_$CLK$\_$ENABLE$()$;

$/*$Configure GPIO pin Output Level $*/$

HAL$\_$GPIO$\_$WritePin$($GPIOA$,$ GPIO$\_$PIN$\_4|$GPIO$\_$PIN$\_5|$GPIO$\_$PIN$\_6,$ GPIO$\_$PIN$\_$RESET$)$;

$/*$Configure GPIO pin Output Level $*/$

HAL$\_$GPIO$\_$WritePin$($GPIOB$,$ GPIO$\_$PIN$\_1,$ GPIO$\_$PIN$\_$RESET$)$;

$/*$Configure GPIO pins : PC$13$ PC$4$ PC$5*/$

GPIO$\_$InitStruct.Pin $=$ GPIO$\_$PIN$\_13|$GPIO$\_$PIN$\_4|$GPIO$\_$PIN$\_5$;

GPIO$\_$InitStruct.Mode $=$ GPIO$\_$MODE$\_$IT$\_$FALLING;

GPIO$\_$InitStruct.Pull $=$ GPIO$\_$PULLUP;

H