lpc17_ssp.h File Reference

#include "chip_lpc175x_6x.h"
#include "ssp_17xx_40xx.h"
#include "FreeRTOS.h"
#include "task.h"

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Data Structures
struct	ssp_config
	SSP Interface config struct. More...

Macros
#define	MAX_SSP_INTERFACES   2
	SSP Interfaces count in LPC17xx.
#define	SSP(n)   LPC_SSP##n
	Macro to retrieve the pointer to LPC_SSP registers based on id number.
#define	SSP_SLAVE   0
#define	SSP_MASTER   1
#define	SSP_INTERRUPT   0
#define	SSP_POLLING   1
#define	ssp_chip_init(id)   Chip_SSP_Init(SSP(id))
#define	ssp_chip_deinit(id)   Chip_SSP_DeInit(SSP(id))
#define	ssp_flush_rx(id)   Chip_SSP_Int_FlushData(SSP(id))
#define	ssp_set_bitrate(id, bitrate)   Chip_SSP_SetBitRate(SSP(id), bitrate)
#define	ssp_write(id, buffer, buffer_len)   ssp_write_read(id, buffer, buffer_len, NULL, 0, 0)
#define	ssp_read(id, buffer, buffer_len, timeout)   ssp_write_read(id, NULL, 0, buffer, buffer_len, timeout)

Typedefs
typedef struct ssp_config	ssp_config_t
	SSP Interface config struct.

Enumerations
enum	ssel_state { ASSERT = 0 , DEASSERT }
	Slave select states. More...

Functions
void	ssp_init (uint8_t id, uint32_t bitrate, uint8_t frame_sz, bool master_mode, bool poll)
void	ssp_ssel_control (uint8_t id, uint8_t state)
	Function that controls the Slave Select (SSEL) signal This pin is controlled manually because the internal SSP driver resets the SSEL pin every 8 bits that are transfered.
void	ssp_write_read (uint8_t id, uint8_t *tx_buf, uint32_t tx_len, uint8_t *rx_buf, uint32_t rx_len, uint32_t timeout)

Macro Definition Documentation

MAX_SSP_INTERFACES

#define MAX_SSP_INTERFACES   2

SSP Interfaces count in LPC17xx.

SSP

#define SSP

(

n

)

LPC_SSP##n

Macro to retrieve the pointer to LPC_SSP registers based on id number.

ssp_chip_deinit

#define ssp_chip_deinit

(

id

)

Chip_SSP_DeInit(SSP(id))

ssp_chip_init

#define ssp_chip_init

(

id

)

Chip_SSP_Init(SSP(id))

ssp_flush_rx

#define ssp_flush_rx

(

id

)

Chip_SSP_Int_FlushData(SSP(id))

SSP_INTERRUPT

#define SSP_INTERRUPT   0

SSP_MASTER

#define SSP_MASTER   1

SSP_POLLING

#define SSP_POLLING   1

ssp_read

#define ssp_read	(		id,
			buffer,
			buffer_len,
			timeout )   ssp_write_read(id, NULL, 0, buffer, buffer_len, timeout)

ssp_set_bitrate

#define ssp_set_bitrate	(		id,
			bitrate )   Chip_SSP_SetBitRate(SSP(id), bitrate)

SSP_SLAVE

#define SSP_SLAVE   0

ssp_write

#define ssp_write	(		id,
			buffer,
			buffer_len )   ssp_write_read(id, buffer, buffer_len, NULL, 0, 0)

Typedef Documentation

ssp_config_t

typedef struct ssp_config ssp_config_t

SSP Interface config struct.

Enumeration Type Documentation

ssel_state

enum ssel_state

Slave select states.

Enumerator
ASSERT
DEASSERT

Function Documentation

ssp_init()

void ssp_init	(	uint8_t	id,
		uint32_t	bitrate,
		uint8_t	frame_sz,
		bool	master_mode,
		bool	poll )

ssp_ssel_control()

void ssp_ssel_control	(	uint8_t	id,
		uint8_t	state )

Function that controls the Slave Select (SSEL) signal This pin is controlled manually because the internal SSP driver resets the SSEL pin every 8 bits that are transfered.

ssp_write_read()

void ssp_write_read	(	uint8_t	id,
		uint8_t *	tx_buf,
		uint32_t	tx_len,
		uint8_t *	rx_buf,
		uint32_t	rx_len,
		uint32_t	timeout )