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#ifndef USART_H
#define USART_H
#include <string.h>
#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>
#include <libopencm3/stm32/usart.h>
#include <libopencm3/cm3/nvic.h>
#include "fifo.h"
#define USART_BUFFER_SIZE 30
typedef struct USART{
FIFO rx_fifo;
FIFO tx_fifo;
} USART;
// init functions
void usart_init(USART *usart);
void usart_deinit(USART *usart);
// write functions
uint16_t usart_write_bytes(USART *usart, uint8_t *data_source, uint16_t data_length);
uint16_t usart_write(USART *usart, char *str);
//uint16_t usart_writeln(USART *usart, char *str);
// read functions
uint16_t usart_read_bytes(USART *usart, uint8_t *data_sink, uint16_t data_length);
//uint16_t usart_read(USART *usart, char *data_sink, uint16_t data_length);
//uint16_t usart_readln(USART *usart, char *data_sink);
#endif /* USART_H */
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