UART1 Mode 0

Enumerations
enum	uart1_mode0_baudrate_t { baudrate_921600 = 921600U , baudrate_5529600 = 5529600U }
	UART1 baud rate enumeration.

init
UART1 initialization functions
#define	uart1_mode0_init(baudRate)
	Initializes UART1 in Mode 0.

Detailed Description

Functions and data structures for UART1 communication in Mode 0.

Mode 0 provides synchronous communication with fixed baud rate.

Serial data enters and exits through RxD. TxD outputs the shift clock. Eight data bits are transmitted/received with the least-significant (LSB) first. The baud rate is fixed at 1/12 (or 1/2) the System clock cycle.

Attention

Baud rate is biased by frequency divider

See also

uart1_send_byte()

uart1_receive_byte()

is_uart1_send_byte_complete()

is_uart1_receive_byte_complete()

Author

Michael Golovanov

Macro Definition Documentation

uart1_mode0_init

#define uart1_mode0_init

(

baudRate

)

Value:

do                                                  \
{                                                   \
    enable_mcu_interrupts();                        \
    enable_uart1_interrupt();                       \
    PCON &= 0x3F;                                   \
    SCON = 0;                                       \
    baudRate == baudrate_921600 ?                   \
        bit_clr(AUXR, CBIT5) : bit_set(AUXR, SBIT5);\
} while (0)

Initializes UART1 in Mode 0.

Must be called before any UART communication is initiated.

Parameters

baudRate

uart1_mode0_baudrate_t The desired baud rate.

Attention

Baud rate is biased by frequency divider.