Renesas Asynchronous SH7145F Manual de usuario descargar pdf (Pagina 15)

SH7145F

Multiprocessor Communications

REJ06B0358-0100O/Rev.1.00 March 2004 Page 15 of 17

while(1); /* LOOP */

}

/**************************************************************

Function : init_sci

Operation : Initialize serial (sci0)

Asynchronous multiprocessor communication

-Data : 8bit

-Stop bit : 1bit

-Parity bit : No

**************************************************************/

void init_sci(void)

{

unsigned long i;

P_STBY.MSTCR1.BIT.MSTP16 = 0; /* disable SCI0 standby mode */

/* Initialize SCI Asynchronous mode * */

P_SCI0.SCR_0.BYTE &= 0x03 ; /* clear TIE,RIE,TE,RE,MPIE,TEIE */

P_SCI0.SCR_0.BIT.CKE = 0; /* clock:internal,SCK:output */

P_SCI0.SMR_0.BYTE = 0x04; /* 8bit,No parity,1stop bit */

// CA = 0; /* Asynchronous mode */

// CHR = 0; /* data length 8bits */

// PE = 0; /* No parity */

// OE = 0; /* (=0)even parity */

// STOP = 0; /* 1 stop bit */

// MP = 1; /* multiprocssor mode */

// CKS = 0; /* clock source=Pφ(25MHz) */

P_SCI0.BRR_0 = 40; /* 19200bps@25MHz(Peripheral) */

P_SCI0.SDCR_0.BIT.DIR = 0; /* LSB first send */

for( i=0; i < 0x0500 ; i++); /* Wait 1bit */

P_SCI0.SCR_0.BIT.TIE = 0; /* TXI3 interrupt disable */

P_SCI0.SCR_0.BIT.RIE = 0; /* RXI3,ERI interrupt disable */

/* Initialize SCI1 PORT */

P_PORTA.PACRL2.BIT.PA1MD = 1; /* set TXD0(PA1:131pin@SH7145) */

P_SCI3.SCR_3.BIT.TE = 1; /* TE=1,Transmit Enable */

}

/**************************************************************/

/* Function : trans_id */

/* Operation : ID data output */

/* Argument : num */

/* Value returned : None */

/**************************************************************/

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