Technical information

CSI to SPI Peripheral Communication in V850ES Microcontrollers

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

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** Abstract:

** The Application is responsible for transfer data of CSI00 interface.

** Parameters:

** txnum: The number of data to transmit(frame number).

** txbuf: Address of transfer buffer.

** Returns:

** MD_ARGERROR: illegal argument

** MD_OK: transfer success

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

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MD_STATUS CSI00_SendData(UCHAR* txbuf, USHORT txnum)

{

/* init CSI00 send parameter */

CSI00_TX_LEN = txnum; /* send data length */

CSI00_TX_CNT = 0; /* send data count */

CSI00_TX_ADDRESS = txbuf; /* send buffer pointer */

SOTB0L = *CSI00_TX_ADDRESS ++ ;

CSI00_TX_CNT ++ ;

return MD_OK;

}

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** Abstract:

** This function receivd data to destination for CSI00 interface and a

** call back function is provided to high level user.

** Parameters:

** rxbuf: Header point of receive buffer.

** rxnum: The number of data should be received.

** Returns:

** MD_ODDBUF: in 16bit transfer mode, the tx buffer should be even number

** MD_OK: transfer success

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

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MD_STATUS CSI00_ReceiveData(UCHAR* rxbuf, USHORT rxnum)

{

/* init CSI00 receive parameter */

CSI00_RX_LEN = rxnum; /* receive data length */

CSI00_RX_CNT = 0; /* receive data count */

CSI00_RX_ADDRESS = rxbuf;