spi.c File Reference

#include <msp430.h>
#include "../globals.h"
#include "spi.h"

Functions
BOOL	SPI_initialize ()
BOOL	SPI_acquirePort ()
BOOL	SPI_releasePort ()
BOOL	SPI_transaction (uint8_t *rxBuf, uint8_t *txBuf, uint16_t size)

Variables
uint8_t	gpRxBuf [SPI_GP_RXBUF_SIZE]
struct {
BOOL   bPortInUse
BOOL   bNewDataReceived
unsigned int   uiCurRx
unsigned int   uiCurTx
unsigned int   uiBytesToSend
uint8_t *   pcRxBuffer
uint8_t *   pcTxBuffer
}	spiSM

Function Documentation

SPI_acquirePort()

BOOL SPI_acquirePort

(

)

Returns

Success - you were able to get the port. Fail - you don't have the port, so don't use it.

SPI_initialize()

BOOL SPI_initialize

(

)

Returns

success or failure

Todo:

Implement this function

SPI_releasePort()

BOOL SPI_releasePort

(

)

Returns

success or fail

Todo:

Make this more robust (don't allow release of port if we don't have it)

SPI_transaction()

BOOL SPI_transaction	(	uint8_t *	rxBuf,
		uint8_t *	txBuf,
		uint16_t	size
	)

Engage in a synchronous serial transaction of the specified length. This function blocks until transaction is complete.

Parameters

txBuf
size

Returns

success or fail

Variable Documentation

bNewDataReceived

BOOL bNewDataReceived

bPortInUse

BOOL bPortInUse

gpRxBuf

uint8_t gpRxBuf[SPI_GP_RXBUF_SIZE]

sensor_spi.c

Author

Aaron Parks

Date

Aug 2013

pcRxBuffer

uint8_t* pcRxBuffer

pcTxBuffer

uint8_t* pcTxBuffer

spiSM

struct { ... } spiSM

Description of state of the SPI module.

uiBytesToSend

unsigned int uiBytesToSend

uiCurRx

unsigned int uiCurRx

uiCurTx

unsigned int uiCurTx