2013-01-08 22:40:58 +08:00
|
|
|
#ifndef __LPC17XX_SPI_H__
|
|
|
|
|
#define __LPC17XX_SPI_H__
|
|
|
|
|
|
|
|
|
|
#include <stdint.h>
|
|
|
|
|
#include <stdbool.h>
|
|
|
|
|
|
|
|
|
|
// if not use FIFO, R: 600kB/s, W: 500kB/s
|
|
|
|
|
// if use FIFO, R: 1.2MB/s, W: 800kB/s
|
|
|
|
|
#define USE_FIFO 1
|
|
|
|
|
|
|
|
|
|
/* bit-frequency = PCLK / (CPSDVSR * [SCR+1]), here SCR=0, PCLK=72MHz, must be even */
|
|
|
|
|
#define SPI_SPEED_20MHz 4 /* => 18MHz */
|
|
|
|
|
#define SPI_SPEED_25MHz 4 /* => 18MHz */
|
|
|
|
|
#define SPI_SPEED_400kHz 180 /* => 400kHz */
|
|
|
|
|
|
|
|
|
|
/* external functions */
|
|
|
|
|
void LPC17xx_SPI_Init (void);
|
|
|
|
|
void LPC17xx_SPI_DeInit( void );
|
|
|
|
|
void LPC17xx_SPI_Release (void);
|
|
|
|
|
void LPC17xx_SPI_SetSpeed (uint8_t speed);
|
|
|
|
|
void LPC17xx_SPI_Select (void);
|
|
|
|
|
void LPC17xx_SPI_DeSelect (void);
|
|
|
|
|
void LPC17xx_SPI_SendByte (uint8_t data);
|
|
|
|
|
uint8_t LPC17xx_SPI_RecvByte (void);
|
|
|
|
|
|
|
|
|
|
#if USE_FIFO
|
|
|
|
|
void LPC17xx_SPI_RecvBlock_FIFO (uint8_t *buff, uint32_t btr);
|
|
|
|
|
void LPC17xx_SPI_SendBlock_FIFO (const uint8_t *buff);
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#endif // __LPC17XX_SPI_H__
|
