Frank 26080115 / LPC1700CMSIS_Lib

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I2C
Modules | Functions | Variables

I2C

Modules

 I2C Private Types
 I2C Private Macros
 I2C Public Types
 I2C Public Functions

Functions

static int32_t I2C_getNum (LPC_I2C_TypeDef *I2Cx)
 Convert from I2C peripheral to number.
static uint32_t I2C_Start (LPC_I2C_TypeDef *I2Cx)
 Generate a start condition on I2C bus (in master mode only)
static void I2C_Stop (LPC_I2C_TypeDef *I2Cx)
 Generate a stop condition on I2C bus (in master mode only)
static uint32_t I2C_SendByte (LPC_I2C_TypeDef *I2Cx, uint8_t databyte)
 Send a byte.
static uint32_t I2C_GetByte (LPC_I2C_TypeDef *I2Cx, uint8_t *retdat, Bool ack)
 Get a byte.
static void I2C_SetClock (LPC_I2C_TypeDef *I2Cx, uint32_t target_clock)
 Setup clock rate for I2C peripheral.

Variables

static I2C_CFG_T i2cdat [3]
 II2C driver data for I2C0, I2C1 and I2C2.

Function Documentation

static uint32_t I2C_GetByte ( LPC_I2C_TypeDef *  I2Cx,
uint8_t *  retdat,
Bool  ack 
) [static]

Get a byte.

Parameters:
[in]I2Cx,:I2C peripheral selected, should be:

  • LPC_I2C0
  • LPC_I2C1
  • LPC_I2C2
[out]retdatpointer to return data
[in]ackassert acknowledge or not, should be: TRUE/FALSE
Returns:
value of I2C status register after sending

Definition at line 186 of file lpc17xx_i2c.c.

static int32_t I2C_getNum ( LPC_I2C_TypeDef *  I2Cx ) [static]

Convert from I2C peripheral to number.

Parameters:
[in]I2Cx,:I2C peripheral selected, should be:

  • LPC_I2C0
  • LPC_I2C1
  • LPC_I2C2
Returns:
I2C number, could be: 0..2

Definition at line 103 of file lpc17xx_i2c.c.

static uint32_t I2C_SendByte ( LPC_I2C_TypeDef *  I2Cx,
uint8_t  databyte 
) [static]

Send a byte.

Parameters:
[in]I2Cx,:I2C peripheral selected, should be:

  • LPC_I2C0
  • LPC_I2C1
  • LPC_I2C2
[in]databyte,:number of byte
Returns:
value of I2C status register after sending

Definition at line 162 of file lpc17xx_i2c.c.

static void I2C_SetClock ( LPC_I2C_TypeDef *  I2Cx,
uint32_t  target_clock 
) [static]

Setup clock rate for I2C peripheral.

Parameters:
[in]I2CxI2C peripheral selected, should be:

  • LPC_I2C0
  • LPC_I2C1
  • LPC_I2C2
[in]target_clock: clock of SSP (Hz)
Returns:
None

Definition at line 212 of file lpc17xx_i2c.c.

static uint32_t I2C_Start ( LPC_I2C_TypeDef *  I2Cx ) [static]

Generate a start condition on I2C bus (in master mode only)

Parameters:
[in]I2Cx,:I2C peripheral selected, should be:

  • LPC_I2C0
  • LPC_I2C1
  • LPC_I2C2
Returns:
value of I2C status register after generate a start condition

Definition at line 122 of file lpc17xx_i2c.c.

static void I2C_Stop ( LPC_I2C_TypeDef *  I2Cx ) [static]

Generate a stop condition on I2C bus (in master mode only)

Parameters:
[in]I2Cx,:I2C peripheral selected, should be:

  • LPC_I2C0
  • LPC_I2C1
  • LPC_I2C2
Returns:
None

Definition at line 141 of file lpc17xx_i2c.c.

Variable Documentation

I2C_CFG_T i2cdat[3] [static]

II2C driver data for I2C0, I2C1 and I2C2.

Definition at line 67 of file lpc17xx_i2c.c.

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