SH7262 datasheet(31/45 Pages) RENESAS

31 / 45 page

SH7262/SH7264 Group

High-speed Read/Write Serial Flash Memory

Using the Renesas Serial Peripheral Interface

REJ06B0889-0100/Rev.1.00

June 2009

Page 31 of 45

3.13

Sample Program Listing "serial_flash.c" (10/19)

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write_enable();

io_cmd_exe(cmd, 2, NULL, 0);

busy_wait();

}

/*""FUNC COMMENT""**************************************************************

* ID

* Outline

: RSPI initialization

*------------------------------------------------------------------------------

* Include

*------------------------------------------------------------------------------

* Declaration

: static void io_init_rspi(void);

*------------------------------------------------------------------------------

* Description

: Initializes channel 0 of the RSPI.

: Sets the RSPI in master mode to set parameters to transfer

: according to the specifications of serial flash memory.

*------------------------------------------------------------------------------

* Argument

: void

*------------------------------------------------------------------------------

* Return Value : void

*------------------------------------------------------------------------------

* Note

: None

*""FUNC COMMENT END""**********************************************************/

static void io_init_rspi(void)

{

/* ==== PORT ==== */

PORT.PFCR3.BIT.PF12MD = 3;

/* PF12:MISO0 */

PORT.PFCR2.BIT.PF11MD = 3;

/* PF11:MOSI0 */

PORT.PFCR2.BIT.PF10MD = 3;

/* PF10:SSL00 */

PORT.PFCR2.BIT.PF9MD

= 3;

/* PF9:RSPCK0 */

/* ==== CPG ==== */

CPG.STBCR5.BIT.MSTP51 = 0;

/* RSPI0 active */

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