i2c.h File Reference

I2C support API. More...

#include <rtems.h>
#include <bsp/lpc32xx.h>

Go to the source code of this file.

Macros
I2C Clock Control Register (I2CCLK_CTRL)
#define	I2CCLK_1_EN   BSP_BIT32(0)
#define	I2CCLK_2_EN   BSP_BIT32(1)
#define	I2CCLK_1_HIGH_DRIVE   BSP_BIT32(2)
#define	I2CCLK_2_HIGH_DRIVE   BSP_BIT32(3)
#define	I2CCLK_USB_HIGH_DRIVE   BSP_BIT32(4)
I2C TX Data FIFO Register (I2Cn_TX)
#define	I2C_TX_READ   BSP_BIT32(0)
#define	I2C_TX_ADDR(val)
#define	I2C_TX_START   BSP_BIT32(8)
#define	I2C_TX_STOP   BSP_BIT32(9)
I2C Status Register (I2Cn_STAT)
#define	I2C_STAT_TDI   BSP_BIT32(0)
#define	I2C_STAT_AFI   BSP_BIT32(1)
#define	I2C_STAT_NAI   BSP_BIT32(2)
#define	I2C_STAT_DRMI   BSP_BIT32(3)
#define	I2C_STAT_DRSI   BSP_BIT32(4)
#define	I2C_STAT_ACTIVE   BSP_BIT32(5)
#define	I2C_STAT_SCL   BSP_BIT32(6)
#define	I2C_STAT_SDA   BSP_BIT32(7)
#define	I2C_STAT_RFF   BSP_BIT32(8)
#define	I2C_STAT_RFE   BSP_BIT32(9)
#define	I2C_STAT_TFF   BSP_BIT32(10)
#define	I2C_STAT_TFE   BSP_BIT32(11)
#define	I2C_STAT_TFFS   BSP_BIT32(12)
#define	I2C_STAT_TFES   BSP_BIT32(13)
I2C Control Register (I2Cn_CTRL)
#define	I2C_CTRL_TDIE   BSP_BIT32(0)
#define	I2C_CTRL_AFIE   BSP_BIT32(1)
#define	I2C_CTRL_NAIE   BSP_BIT32(2)
#define	I2C_CTRL_DRMIE   BSP_BIT32(3)
#define	I2C_CTRL_DRSIE   BSP_BIT32(4)
#define	I2C_CTRL_RFFIE   BSP_BIT32(5)
#define	I2C_CTRL_RFDAIE   BSP_BIT32(6)
#define	I2C_CTRL_TFFIO   BSP_BIT32(7)
#define	I2C_CTRL_RESET   BSP_BIT32(8)
#define	I2C_CTRL_SEVEN   BSP_BIT32(9)
#define	I2C_CTRL_TFFSIE   BSP_BIT32(10)

Functions
rtems_status_code	lpc32xx_i2c_init (volatile lpc32xx_i2c *i2c, unsigned clock_in_hz)
	Initializes the I2C module i2c.
void	lpc32xx_i2c_reset (volatile lpc32xx_i2c *i2c)
	Resets the I2C module i2c.
rtems_status_code	lpc32xx_i2c_clock (volatile lpc32xx_i2c *i2c, unsigned clock_in_hz)
	Sets the I2C module i2c clock.
rtems_status_code	lpc32xx_i2c_write_start (volatile lpc32xx_i2c *i2c, unsigned addr)
	Starts a write transaction on the I2C module i2c.
rtems_status_code	lpc32xx_i2c_write_with_optional_stop (volatile lpc32xx_i2c *i2c, const uint8_t *out, size_t n, bool stop)
	Writes data via the I2C module i2c with optional stop.
rtems_status_code	lpc32xx_i2c_read_start (volatile lpc32xx_i2c *i2c, unsigned addr)
	Starts a read transaction on the I2C module i2c.
rtems_status_code	lpc32xx_i2c_read_with_optional_stop (volatile lpc32xx_i2c *i2c, uint8_t *in, size_t n, bool stop)
	Reads data via the I2C module i2c with optional stop.
rtems_status_code	lpc32xx_i2c_write_and_read (volatile lpc32xx_i2c *i2c, unsigned addr, const uint8_t *out, size_t out_size, uint8_t *in, size_t in_size)
	Writes and reads data via the I2C module i2c.

Detailed Description

I2C support API.