Renesas Single-Chip Microcomputer M38C89T-ADF Bedienungsanleitung PDF herunterladen (Seite 100)

Rev.1.00 May 22 2012

REJ09B0566

4-80

Library Reference

4.2.9 40BSerial Communication Interface R_SCI_Create

4.2.9. Serial Communication Interface

1) R_SCI_Create

Synopsis

SCI channel setup.

Prototype bool R_SCI_Create(

uint8_t data1, // Channel selection

uint32_t data2, // Channel configuration

uint32_t data3, // Bit rate or register value

uint8_t data4 // Interrupt priority level

uint8_t data5 //dma_channel

);

Description (1/3)

Set up the selected SCI channel.

[data1]

Select channel SCIFn (where n = 0 to 7).

[data2]

Configure the channel. If multiple selections are required, use “|” to separate each selection.

The default settings are shown in bold.

• Operation mode

PDL_SCI_ASYNC or

PDL_SCI_SYNC or

PDL_SCI_SMART

Choose between Asynchronous, Clock synchronous or Smart

Card Interface operation.

• Data transfer format

PDL_SCI_LSB_FIRST or

PDL_SCI_MSB_FIRST

Select least- or most-significant bit first.

In 7-bit mode the format is fixed to LSB first.

Options which only apply to Asynchronous mode

• Data clock source selection

PDL_SCI_CLK_INT_IO or

Select the on-chip

The SCKn pin functions as an I/O pin.

PDL_SCI_CLK_INT_OUT or

baud rate generator.

The SCKn pin outputs the bit clock.

PDL_SCI_CLK_EXT_DIV_8 or

PDL_SCI_CLK_EXT_DIV_16 or

Input a clock of 8 or 16 times the desired bit rate to the SCKn

pin.

PDL_SCI_CLK_TMR

For SCI5, select Timer output TMO0. SCK5 is set to high-impedance.

For SCI6, select Timer output TMO2. SCK6 is set to high-impedance.

• Data length

PDL_SCI_8_BIT_LENGTH or

PDL_SCI_7_BIT_LENGTH

8- or 7-bit data length.

1 2 ... 95 96 97 98 99 100 101 102 103 104 105 ... 137 138

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