Technical information

SCI to SPI Peripheral Communication in V850ES Microcontrollers

/* CSI00 Transmission */

UCHAR *CSI00_TX_ADDRESS; /* csi00 transmit buffer address */

USHORT CSI00_TX_CNT; /* csi00 transmit data number */

USHORT CSI00_TX_LEN; /* csi00 transmit data length */

/* CSI00 Reception */

UCHAR *CSI00_RX_ADDRESS;

USHORT CSI00_RX_LEN; /* csi00 recive buffer size */

USHORT CSI00_RX_CNT; /* csi00 recive data count */

#define FIX_APPLILET_CSI00_ISR 1 /* define to fix code */

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

--------------------------------

** Abstract:

** CSI00 interface initialization, the application is responsible for

** set work mode, transfer speed, data bit length, data direction setting,

** automatic transfer mode,clock and data phase setting,INTCSI00 parity

** setting.

** Parameters:

** None

** Returns:

** None

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

--------------------------------

void CSI00_Init( void )

{

CSIM00 = 0;

SetIORBit(CSI0IC0, 0x40); /* Interrupt disabled */

SetIORBit(PMC4, 0x07); /* Port setting for

receive/transmit mode*/

ClrIORBit(CSIM00, 0x20); /* Set data length is 8 bits */

ClrIORBit(CSIM00, 0x10); /* Set data direction is MSB */

SetIORBit(CSIC0, 0x10); /* Clock data phase3 */

SetIORBit(CSIC0, 0x01); /* fxx/4 */

SetIORBit(CSI0IC0, Lowest); /* Set transfer completion

interrupt priority Lowest */

ClrIORBit(CSI0IC0, 0x40);

SetIORBit(CSIM00, 0x40); /* CSI00 work in half-duplex mode

SetIORBit(CSIM00, 0x80);

return;

}