i2c.c File Reference

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Detailed Description

I2C implementation

Author:

Jörgen Birkler (birkler@yahoo.com)

Defines

• #define I2C_SDA_INPUT()
• #define I2C_INIT()
• #define I2C_BIT_DELAY_uS
• #define I2C_CLOCKS_PER_LOOP
• #define I2C_BIT_COUNTS
• #define I2C_TIMER_COUNT

Functions

• void I2C_BitDelay (void)
• uint8_t I2C_SCL_ReleaseAndWait (void)
• void I2C_SendStartBit (void)
• bool I2C_SendByte (uint8_t byte)
• void I2C_SendStopBit (void)
• void I2C_Init (void)

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Function Documentation

void I2C_BitDelay (  void   )  [static]

Generate bit delay for a 3.3v device min clock pulse width low and high is 4 us

uint8_t I2C_SCL_ReleaseAndWait (  void   )  [static]

Release SLC and wait for it's release by slave Wait max I2C_TIMER_COUNT bit delays Return values: >0  if slave released SCL (success). 0  if slave did not release SCL before timer expired (fail)

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