How to enable interrupts for USIC module?

[#1]

Hello everyone!

I'm trying to Enable interrupts for reciveing data from UART0 on XMC 2 GO board. Data sending works ok but I can't enable interrupts for incoming data. Can you help me with the cosde? I'm using Atollic True Studio and CMSIS Library pack.

#include "xmc_uart.h"
#include "xmc_gpio.h"
#include "xmc_scu.h"

#include 
#include 
#include 

volatile uint32_t timer1;



void uart_putchar (char data)
{
	XMC_UART_CH_Transmit(XMC_UART0_CH0 , data);
}


void uart_putS (char * data)
{
	char znak = 0;
	while( (znak = *data++) ) uart_putchar(znak);
}

void SysTick_Handler (void)
{
	if(timer1) timer1--;
}

void USIC0_0_IRQHandler (void)
{

}

/* main function */
int main(void)
{
//	SystemInit();
//	SystemCoreClockUpdate();

	XMC_GPIO_CONFIG_t TX_pin =
	{
		.mode = XMC_GPIO_MODE_OUTPUT_PUSH_PULL_ALT6,
		.output_level = XMC_GPIO_OUTPUT_LEVEL_HIGH
	};

	XMC_GPIO_CONFIG_t RX_pin =
	{
		.mode = XMC_GPIO_MODE_INPUT_TRISTATE,
		.input_hysteresis = XMC_GPIO_INPUT_HYSTERESIS_STANDARD,
	};
	XMC_GPIO_CONFIG_t LED1 =
	{
		.mode = XMC_GPIO_MODE_OUTPUT_PUSH_PULL,
		.output_level = XMC_GPIO_OUTPUT_LEVEL_LOW
	};
	XMC_GPIO_CONFIG_t LED2 =
	{
		.mode = XMC_GPIO_MODE_OUTPUT_PUSH_PULL,
		.output_level = XMC_GPIO_OUTPUT_LEVEL_LOW
	};

	XMC_UART_CH_CONFIG_t UART_board =
	{
			.baudrate  = 9600UL,
			.data_bits = 8UL,
			.stop_bits = 1UL,
			.parity_mode = XMC_USIC_CH_PARITY_MODE_NONE,

	};



	XMC_USIC_CH_t *uart_0 = XMC_UART0_CH0;



	XMC_UART_CH_Init(uart_0, &UART_board);
	XMC_UART_CH_SetInputSource(uart_0, XMC_UART_CH_INPUT_RXD1, USIC0_C0_DX3_P2_2);
	XMC_UART_CH_Start(uart_0);
	USIC0_CH0->INPR &= ~(USIC_CH_INPR_RINP_Msk);
	XMC_UART_CH_ClearStatusFlag(uart_0, XMC_UART_CH_STATUS_FLAG_RECEIVE_INDICATION);
	XMC_UART_CH_EnableEvent(uart_0, XMC_UART_CH_EVENT_STANDARD_RECEIVE);
	NVIC_ClearPendingIRQ(USIC0_0_IRQn);
	NVIC_EnableIRQ(USIC0_0_IRQn);


	XMC_GPIO_Init( P2_1, &TX_pin );
	XMC_GPIO_Init( P2_2, &RX_pin );
	XMC_GPIO_EnableDigitalInput(P2_2);
	XMC_GPIO_Init( P1_0, &LED1 );
	XMC_GPIO_Init( P1_1, &LED2 );

	SysTick_Config(SystemCoreClock/1000);



	uint8_t licznik = 1;
	char itoa_buf[10];
  /* Infinite loop */
  while (1)
  {

	  if(!timer1)
	  {


		  	timer1 = 500;
			XMC_GPIO_ToggleOutput(P1_0);
			XMC_GPIO_ToggleOutput(P1_1);
			uart_putS(itoa(licznik++, itoa_buf, 10));
			uart_putS("\r\n");
	  }

  }

}