#include <stdint.h>
#define TIMEOUT 1000

enum UartErrorCode {
    USART_TX_ERROR,
    USART_TX_BUSY,
    USART_TX_COMPLETE
};

static uint32_t usart_tx_ready(void);
uint32_t usart_tx_write(const uint8_t *data_bytes, uint32_t n_bytes);
uint32_t usart_tx_write_string(const uint8_t *data_bytes);