#if !defined(USART_ISR_RXNE)
#define USART_ISR_RXNE                      USART_ISR_RXNE //CHANGED
#endif

/**
 * @brief  Default string delimiter for USART
 */
#define USART_STRING_DELIMITER              '\n'

/* Configuration */
#if defined(STM32F4XX)  // to change to f0
#define USART_WRITE_DATA(USARTx, data)      ((USARTx)->DR = (data))
#define USART_READ_DATA(USARTx)             ((USARTx)->DR)
#define GPIO_AF_UART5                       (GPIO_AF8_UART5)
#define USART_STATUS_REG                    SR
#else
#define USART_WRITE_DATA(USARTx, data)      ((USARTx)->TDR = (data))
#define USART_READ_DATA(USARTx)             ((USARTx)->RDR)
#define GPIO_AF_UART5                       (GPIO_AF7_UART5)
#define USART_STATUS_REG                    ISR
#endif


/* Wait for TX empty */
#define USART_WAIT(USARTx)                  while (!((USARTx)->USART_STATUS_REG & USART_FLAG_TXE))