hal.h

基于msp430f149与CC2420的无线传感器网络平台

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

  Filename:     hal.h

  Description:  This file contains MCU definitons for the MSP430F1611.

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

#ifndef HAL_H
#define HAL_H


/************************************************************************************
	SPI: Low level functions
************************************************************************************/

#define	SPI_WAITFOREOTx()	while ((U1TCTL & TXEPT) == 0)  // USART1 Tx buffer ready?
#define	SPI_WAITFOREORx()	while ((IFG2 & URXIFG1) == 0)  // USART1 Rx buffer ready?


#define FASTSPI_TX(x)\
	do {\
		U1TXBUF = x;\
		SPI_WAITFOREOTx();\
	} while(0)

#define FASTSPI_RX(x)\
    do {\
        U1TXBUF = 0;\
	    SPI_WAITFOREORx();\
		x = U1RXBUF;\
    } while(0)

#define FASTSPI_RX_GARBAGE()\
	do {\
    	U1TXBUF = 0;\
		SPI_WAITFOREORx();\
		U1RXBUF;\
	} while(0)

#define FASTSPI_TX_MANY(p,c)\
	do {\
		for (UINT8 spiCnt = 0; spiCnt < (c); spiCnt++) {\
			FASTSPI_TX(((UINT8*)(p))[spiCnt]);\
		}\
	} while(0)


#define FASTSPI_RX_WORD(x)\
	 do {\
	    U1TXBUF = 0;\
        SPI_WAITFOREORx();\
		x = U1RXBUF << 8;\
	    U1TXBUF = 0;\
		SPI_WAITFOREORx();\
		x |= U1RXBUF;\
    } while (0)

#define FASTSPI_TX_ADDR(a)\
	 do {\
		  U1TXBUF = a;\
		  SPI_WAITFOREOTx();\
	 } while (0)

#define FASTSPI_RX_ADDR(a)\
	 do {\
		  U1TXBUF = (a) | 0x40;\
		  SPI_WAITFOREOTx();\
	 } while (0)



/***********************************************************
	FAST SPI: Radio register access
***********************************************************/
// 	  s = command strobe
// 	  a = register address
// 	  v = register value

#define FASTSPI_STROBE(s) \
    do {\
		  SPI_ENABLE();\
		  FASTSPI_TX_ADDR(s);\
		  SPI_DISABLE();\
    } while (0)

#define FASTSPI_SETREG(a,v)\
	 do {\
		  SPI_ENABLE();\
		  FASTSPI_TX_ADDR(a);\
		  FASTSPI_TX((UINT8) ((v) >> 8));\
		  FASTSPI_TX((UINT8) (v));\
		  SPI_DISABLE();\
	 } while (0)


#define FASTSPI_GETREG(a,v)\
	 do {\
		  SPI_ENABLE();\
		  FASTSPI_RX_ADDR(a);\
		  v= (UINT8)U1RXBUF;\
		  FASTSPI_RX_WORD(v);\
		  halWait(1);\
		  SPI_DISABLE();\
	 } while (0)

// Updates the SPI status UINT8

#define FASTSPI_UPD_STATUS(s)\
	 do {\
		  SPI_ENABLE();\
		  U1TXBUF = CC2420_SNOP;\
		  SPI_WAITFOREOTx();\
		  s = U1RXBUF;\
		  SPI_DISABLE();\
	 } while (0)

/***********************************************************
	FAST SPI: FIFO Access
***********************************************************/
// 	  p = pointer to the UINT8 array to be read/written
// 	  c = the number of UINT8s to read/write
// 	  b = single data UINT8

#define FASTSPI_WRITE_FIFO(p,c)\
	do {\
	    SPI_ENABLE();\
		FASTSPI_TX_ADDR(CC2420_TXFIFO);\
		for (UINT8 i = 0; i < (c); i++) {\
		    FASTSPI_TX(((UINT8*)(p))[i]);\
		}\
		SPI_DISABLE();\
    } while (0)

#define FASTSPI_WRITE_FIFO_NOCE(p,c)\
	do {\
		FASTSPI_TX_ADDR(CC2420_TXFIFO);\
		for (UINT8 spiCnt = 0; spiCnt < (c); spiCnt++) {\
		    FASTSPI_TX(((UINT8*)(p))[spiCnt]);\
		}\
    } while (0)

#define FASTSPI_READ_FIFO_UINT8(b)\
	 do {\
		  SPI_ENABLE();\
		  FASTSPI_RX_ADDR(CC2420_RXFIFO);\
		  U1RXBUF;\
		  FASTSPI_RX(b);\
  		  halWait(1);\
		  SPI_DISABLE();\
	 } while (0)


#define FASTSPI_READ_FIFO_NO_WAIT(p,c)\
	 do {\
		  SPI_ENABLE();\
		  FASTSPI_RX_ADDR(CC2420_RXFIFO);\
		  U1RXBUF;\
		  for (UINT8 spiCnt = 0; spiCnt < (c); spiCnt++) {\
				FASTSPI_RX(((UINT8*)(p))[spiCnt]);\
		  }\
		  halWait(1);\
		  SPI_DISABLE();\
	 } while (0)



#define FASTSPI_READ_FIFO_GARBAGE(c)\
	 do {\
		  SPI_ENABLE();\
		  FASTSPI_RX_ADDR(CC2420_RXFIFO);\
		  U1RXBUF;\
		  for (UINT8 spiCnt = 0; spiCnt < (c); spiCnt++) {\
				FASTSPI_RX_GARBAGE();\
		  }\
  		  halWait(1);\
		  SPI_DISABLE();\
	 } while (0)



/***********************************************************
	FAST SPI: CC2420 RAM access (big or little-endian order)
***********************************************************/
//  FAST SPI: CC2420 RAM access (big or little-endian order)
// 	  p = pointer to the variable to be written
// 	  a = the CC2420 RAM address
// 	  c = the number of UINT8s to write
// 	  n = counter variable which is used in for/while loops (UINT8)
//
//  Example of usage:
// 	  UINT8 n;
// 	  UINT16 shortAddress = 0xBEEF;
// 	  FASTSPI_WRITE_RAM_LE(&shortAddress, CC2420RAM_SHORTADDR, 2);


#define FASTSPI_WRITE_RAM_LE(p,a,c,n)\
	 do {\
		  SPI_ENABLE();\
		  FASTSPI_TX(0x80 | (a & 0x7F));\
		  FASTSPI_TX((a >> 1) & 0xC0);\
		  for (n = 0; n < (c); n++) {\
				FASTSPI_TX(((UINT8*)(p))[n]);\
		  }\
		  SPI_DISABLE();\
	 } while (0)

//-----------------------------------------------------------------------------------
//  void halWait(UINT16 timeout)
//
//  DESCRIPTION:
//      Runs an idle loop for [timeout] microseconds.
//
//  ARGUMENTS:
//      UINT16 timeout
//          The timeout in microseconds
//-----------------------------------------------------------------------------------
void halWait(UINT16 timeout);


void halSpiInit(void);

#endif

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