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split SPI code into generic and CC2420-related and renamed constants in CC2420

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This commit is contained in:
joxe 2010-06-23 10:15:28 +00:00
parent 898c00b812
commit f7a82a9145
3 changed files with 203 additions and 272 deletions
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107
core/dev/cc2420.h
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@ -28,7 +28,7 @@
*
* This file is part of the Contiki operating system.
*
* $Id: cc2420.h,v 1.9 2010/02/23 18:24:49 adamdunkels Exp $
* $Id: cc2420.h,v 1.10 2010/06/23 10:15:28 joxe Exp $
*/
/**
@ -36,13 +36,16 @@
* CC2420 driver header file
* \author
* Adam Dunkels <adam@sics.se>
* Joakim Eriksson <joakime@sics.se>
*/
#ifndef __CC2420_H__
#define __CC2420_H__
#include "contiki.h"
#include "spi.h"
#include "dev/radio.h"
#include "cc2420_const.h"
int cc2420_init(void);
@ -52,8 +55,8 @@ void cc2420_set_channel(int channel);
int cc2420_get_channel(void);
void cc2420_set_pan_addr(unsigned pan,
unsigned addr,
const uint8_t *ieee_addr);
unsigned addr,
const uint8_t *ieee_addr);
extern signed char cc2420_last_rssi;
extern uint8_t cc2420_last_correlation;
@ -86,4 +89,102 @@ int cc2420_off(void);
void cc2420_set_cca_threshold(int value);
/************************************************************************/
/* Additional SPI Macros for the CC2420 */
/************************************************************************/
/* Send a strobe to the CC2420 */
#define SPI_STROBE(s) \
do { \
CC2420_SPI_ENABLE(); \
SPI_WRITE(s); \
CC2420_SPI_DISABLE(); \
} while (0)
/* Write to a register in the CC2420 */
/* Note: the SPI_WRITE(0) seems to be needed for getting the */
/* write reg working on the Z1 / MSP430X platform */
#define SPI_WRITE_REG(adr,data) \
do { \
CC2420_SPI_ENABLE(); \
SPI_WRITE_FAST(adr); \
SPI_WRITE_FAST((uint8_t)((data) >> 8)); \
SPI_WRITE_FAST((uint8_t)(data & 0xff)); \
SPI_WAITFORTx_ENDED(); \
SPI_WRITE(0); \
CC2420_SPI_DISABLE(); \
} while(0)
/* Read a register in the CC2420 */
#define SPI_READ_REG(adr,data) \
do { \
CC2420_SPI_ENABLE(); \
SPI_WRITE(adr | 0x40); \
data = (uint8_t)SPI_RXBUF; \
SPI_TXBUF = 0; \
SPI_WAITFOREORx(); \
data = SPI_RXBUF << 8; \
SPI_TXBUF = 0; \
SPI_WAITFOREORx(); \
data |= SPI_RXBUF; \
CC2420_SPI_DISABLE(); \
} while(0)
#define SPI_READ_FIFO_BYTE(data) \
do { \
CC2420_SPI_ENABLE(); \
SPI_WRITE(CC2420_RXFIFO | 0x40); \
(void)SPI_RXBUF; \
SPI_READ(data); \
clock_delay(1); \
CC2420_SPI_DISABLE(); \
} while(0)
#define SPI_READ_FIFO_BUF(buffer,count) \
do { \
uint8_t i; \
CC2420_SPI_ENABLE(); \
SPI_WRITE(CC2420_RXFIFO | 0x40); \
(void)SPI_RXBUF; \
for(i = 0; i < (count); i++) { \
SPI_READ(((uint8_t *)(buffer))[i]); \
} \
clock_delay(1); \
CC2420_SPI_DISABLE(); \
} while(0)
#define SPI_WRITE_FIFO_BUF(buffer,count) \
do { \
uint8_t i; \
CC2420_SPI_ENABLE(); \
SPI_WRITE_FAST(CC2420_TXFIFO); \
for(i = 0; i < (count); i++) { \
SPI_WRITE_FAST(((uint8_t *)(buffer))[i]); \
} \
SPI_WAITFORTx_ENDED(); \
CC2420_SPI_DISABLE(); \
} while(0)
/* Write to RAM in the CC2420 */
#define SPI_WRITE_RAM(buffer,adr,count) \
do { \
uint8_t i; \
CC2420_SPI_ENABLE(); \
SPI_WRITE_FAST(0x80 | (adr & 0x7f)); \
SPI_WRITE_FAST((adr >> 1) & 0xc0); \
for(i = 0; i < (count); i++) { \
SPI_WRITE_FAST(((uint8_t*)(buffer))[i]); \
} \
SPI_WAITFORTx_ENDED(); \
CC2420_SPI_DISABLE(); \
} while(0)
/* Read status of the CC2420 */
#define SPI_GET_STATUS(s) \
do { \
CC2420_SPI_ENABLE(); \
SPI_WRITE(CC2420_SNOP); \
s = SPI_RXBUF; \
CC2420_SPI_DISABLE(); \
} while (0)
#endif /* __CC2420_H__ */