CCS C Compiler Manual PCB / PCM / PCH

Built-in Functions
i2c_poll( )
Syntax:
Parameters:
Returns:
Function:
Availability:
Requires:
Examples:
Example Files:
Also See:
i2c_poll()
i2c_poll(stream)
stream (optional)- specify the stream defined in #USE I2C
1 (TRUE) or 0 (FALSE)
The I2C_POLL() function should only be used when the built-in SSP is
used. This function returns TRUE if the hardware has a received byte in the
buffer. When a TRUE is returned, a call to I2C_READ() will immediately return
the byte that was received.
Devices with built in I2C
#USE I2C
if(i2c-poll())
buffer [index]=i2c-read();//read data
None
i2c_speed, i2c_start, i2c_stop, i2c_slaveaddr, i2c_isr_state, i2c_write, i2c_read,
#USE I2C, I2C Overview
i2c_read( )
Syntax:
data = i2c_read();
data = i2c_read(ack);
data = i2c_read(stream, ack);
Parameters: ack -Optional, defaults to 1.
0 indicates do not ack.
1 indicates to ack.
2 slave only, indicates to not release clock at end of read. Use when
i2c_isr_state ()
returns 0x80.
stream - specify the stream defined in #USE I2C
Returns:
data - 8 bit int
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