UART_CTL_STOPBITS_SHIFT
#define UART_CTL_STOPBITS_MASK (0xf << UART_CTL_STOPBITS_SHIFT)
#define UART_CTL_STOPBITS_1 (0x7 << UART_CTL_STOPBITS_SHIFT)
#define UART_CTL_STOPBITS_2 (0xf << UART_CTL_STOPBITS_SHIFT)