How to "return" HAL_UART_Receive buffer?

I'm using the HAL_UART_Receive function for receiving strings and I need to check if the receiving strings matches with the strings that I want to receive.

First I want to create the char for the string in heap:

char *response = (char *)malloc(RN2483_MAX_BUFF);

Then i'm calling the function:

RN2483_response(&huart1, (uint8_t *)response);

This function reads from RX buffer until he reads '\n' character:

// Reads from the RX buffer into response until '\n' 
static int RN2483_response(UART_HandleTypeDef *huart, uint8_t *response)
{
	int i;
	huart->pRxBuffPtr = 0; // delete the last value
 
	// while receiving transfer is not complete
	while((*huart->pRxBuffPtr) != '\n')
	{
		HAL_UART_Receive(&huart1, (uint8_t *)response, RN2483_MAX_BUFF, 1);
		huart->pRxBuffPtr++;
		i++;
	}
 
	if (i <= 0)
		return RN2483_ERR_PANIC;
	else
		return i;
}

 How can I get the receiving string in de response character array?

EDIT:

Looks like it's almost working.. The string is just a bit off in the response array:

I have"\nk\r"in response while I receive "ok\r\n"