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- TABLE OF CONTENTS
-
- i2c.library/AllocI2C
- i2c.library/FreeI2C
- i2c.library/GetI2COpponent
- i2c.library/InitI2C
- i2c.library/ReceiveI2C
- i2c.library/SendI2C
- i2c.library/SetDelay
- i2c.library/AllocI2C i2c.library/AllocI2C
-
- NAME
- AllocI2C -- Allocate port and timer for use with I²C-bus hardware.
-
- SYNOPSIS
- ret = AllocI2C (Delay_Type, Name);
- D0 D0 A1
-
- BYTE AllocI2C (UBYTE, char *);
-
- FUNCTION
- Allocates the parallelport and needed bits to communicate according
- to the I²C-bus standard specified by Philips.
- If Timer-delay is used, this routine will also handle initializing
- of the timer needed to keep the clock-frequency (SCL) under 100 KHz
- as specified in the I²C-bus standard.
-
- INPUTS
- Delay_Type Specifies if a loop or a timer should be used
- to handle the SCL-delay. To get the best
- performance, it is recommended to use loop-delay
- on non-accelerated Amigas, and only use the timer-
- delay with accelerated Amigas.
- Name Name of the program using the I²C-bus hardware and
- thereby blocking the parallelport for other tasks.
-
- RESULTS
- ret Zero if no error. Detailed error-codes can be found
- in i2c_library.h
-
- NOTES
- Remember to call InitI2C() after AllocI2C() before using SendI2C()
- or ReceiveI2C().
-
- SEE ALSO
-
- BUGS
-
- i2c.library/FreeI2C i2c.library/FreeI2C
-
- NAME
- FreeI2C -- Deallocate port and bits after use of I²C-bus.
-
- SYNOPSIS
- FreeI2C();
-
- void FreeI2C(void);
-
- FUNCTION
- Deallocates the parallelport and used bits.
- If Timer-delay was used, the timer will now be released.
-
- RESULTS
-
- NOTES
- This function may only be called, if AllocI2C() returned zero.
-
- SEE ALSO
-
- BUGS
-
- i2c.library/GetI2COpponent i2c.library/GetI2COpponent
-
- NAME
- GetI2COpponent -- Get name of task using the parallel-port.
-
- SYNOPSIS
- ret = GetI2COpponent();
-
- STRPTR GetI2COpponent(void);
-
- FUNCTION
- If AllocI2C returns I2C_PORT_BUSY or I2C_BITS_BUSY this function
- can be called to get the name of the Task using the port.
-
- RESULTS
- STRPTR to task using the parallel-port
-
- NOTES
- Only call this function if AllocI2C returns I2C_PORT_BUSY or
- I2C_BITS_BUSY.
-
- SEE ALSO
-
- BUGS
-
- i2c.library/InitI2C i2c.library/InitI2C
-
- NAME
- InitI2C -- Initializes the port and sets default I²C-bus conditions
-
- SYNOPSIS
- InitI2C();
-
- void InitI2C(void);
-
- FUNCTION
- Sets the needed bits for input/output-operation. After this, the
- default I²C-bus condition will de set, that is both SDA and SCL
- high.
-
- RESULTS
-
- NOTES
- This function should be called right after AllocI2C() if AllocI2C()
- returns zero.
-
- SEE ALSO
-
- BUGS
-
- i2c.library/ReceiveI2C i2c.library/ReceiveI2C
-
- NAME
- ReceiveI2C -- Receive bytes from the I²C-bus
-
- SYNOPSIS
- error = ReceiveI2C(addr, number, data);
- D0 D0 D1 A1
-
- UBYTE ReceiveI2C(UBYTE, int, UBYTE []);
-
- FUNCTION
- Receive data from a device connected to the I²C-bus hardware.
-
- INPUTS
- addr Address of device to receive data from.
- number Number of bytes to receive from the specified device.
- data Array, where to put the received data.
-
- RESULTS
- error Zero if an error occurred during reception of data
- from the specified device.
-
- NOTES
- Be sure, that the size of the data-array is the same or larger than
- the requested number of bytes to receive.
-
- SEE ALSO
-
- BUGS
-
- i2c.library/SendI2C i2c.library/SendI2C
-
- NAME
- SendI2C -- Transmit bytes on the I²C-bus
-
- SYNOPSIS
- error = SendI2C(addr, number, data);
- D0 D0 D1 A1
-
- UBYTE SendI2C(UBYTE, int, UBYTE []);
-
- FUNCTION
- Send data to a device connected to the I²C-bus hardware.
-
- INPUTS
- addr Address of device to receive the transmitted data.
- number Number of bytes to transmit from the array specified
- by data.
- data Array, where the data to be transmitted is placed in.
-
- RESULTS
- error Zero if an error occurred during transmitting the
- data to the specified device.
-
- NOTES
-
- SEE ALSO
-
- BUGS
-
- i2c.library/SetDelay i2c.library/SetDelay
-
- NAME
- SetDelay -- Set the delay for I²C-bus clock-rate
-
- SYNOPSIS
- SetDelay(ticks);
- D0
-
- void SetDelay(ULONG);
-
- FUNCTION
- Set the delay for the I²C-bus clock. This is needed on some Amiga's,
- since the I²C-bus standard specifies the maximum clock-frequency
- on SCL to 100 KHz.
- If timer-delay is used, the input will be handled like UNIT_MICROHZ
- in the delay-routine.
-
- RESULTS
- Adjusts speed of operations on the I2C-bus
-
- NOTES
-
- SEE ALSO
-
- BUGS
-
-