LCOM1920-T5G03

#define UART_RBR            0

#define UART_THR            0

#define UART_IER            1

#define UART_IIR            2

#define UART_FCR            2

#define UART_LCR            3

#define UART_MCR            4

#define UART_LSR            5

#define UART_MSR            6

#define UART_SR             7

#define UART_DLL            0

#define UART_DLM            1

#define UART_BITS_PER_CHAR_POS 0

#define UART_STOP_BITS_POS     2

#define UART_PARITY_POS        3

#define UART_BREAK_CONTROL_POS 6

#define UART_DLAB_POS          7

#define UART_BITS_PER_CHAR  (BIT(0) | BIT(1))

#define UART_STOP_BITS      (BIT(2))

#define UART_PARITY         (BIT(3) | BIT(4) | BIT(5))

#define UART_BREAK_CONTROL  (BIT(6))

#define UART_DLAB           (BIT(7))

#define UART_GET_BITS_PER_CHAR(n) (((n)&UART_BITS_PER_CHAR) + 5)

#define UART_GET_STOP_BITS(n)     (((n)&UART_STOP_BITS)? 2 : 1)

#define UART_GET_PARITY(n)        (((n)&UART_PARITY       )>>UART_PARITY_POS       )

#define UART_GET_BREAK_CONTROL(n) (((n)&UART_BREAK_CONTROL)>>UART_BREAK_CONTROL_POS)

#define UART_GET_DLAB(n)          (((n)&UART_DLAB         )>>UART_DLAB_POS         )

#define UART_GET_DIV_LATCH(m,l)   ((m)<<8 | (l))

#define UART_GET_DLL(n)           ((n)&0xFF)

#define UART_GET_DLM(n)           (((n)>>8)&0xFF)

    config->dlab                 = UART_GET_DLAB         (config->config);

    config->divisor_latch        = UART_GET_DIV_LATCH    (config->dlm, config->dll);

    printf("Bit rate: %d\n", UART_BITRATE/config.divisor_latch);

int uart_set_bit_rate(int base_addr, float bit_rate){

    uint8_t dll = UART_GET_DLL(latch);

    uint8_t dlm = UART_GET_DLM(latch);