Function uart_is_transmit_empty

bsp/loongson/ls1cdev/libraries/ls1c_uart.c:144–157

* 判断FIFO是否为空 * @uartx 串口号 * @ret TRUE or FALSE */

 * @ret TRUE or FALSE
 */
BOOL uart_is_transmit_empty(ls1c_uart_t uartx)
{
    void *uart_base = uart_get_base(uartx);
    unsigned char status = reg_read_8(uart_base + LS1C_UART_LSR_OFFSET);

    if (status & (LS1C_UART_LSR_TE | LS1C_UART_LSR_TFE))
    {
        return TRUE;
    }
    else
    {
        return FALSE;
    }
}


/*